/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -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-d623d84 [2020-07-21 11:23:41,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:23:41,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:23:41,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:23:41,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:23:41,869 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:23:41,871 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:23:41,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:23:41,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:23:41,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:23:41,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:23:41,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:23:41,892 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:23:41,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:23:41,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:23:41,897 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:23:41,899 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:23:41,900 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:23:41,901 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:23:41,906 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:23:41,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:23:41,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:23:41,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:23:41,917 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:23:41,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 11:23:41,919 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 11:23:41,919 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 11:23:41,922 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 11:23:41,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 11:23:41,924 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 11:23:41,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 11:23:41,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 11:23:41,926 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 11:23:41,927 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 11:23:41,929 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 11:23:41,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 11:23:41,929 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 11:23:41,930 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 11:23:41,930 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:23:41,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:23:41,932 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:23:41,933 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 [2020-07-21 11:23:41,963 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:23:41,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:23:41,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:23:41,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:23:41,968 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:23:41,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:23:41,972 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:23:41,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:23:41,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:23:41,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:23:41,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:23:41,973 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:23:41,973 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:23:41,973 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:23:41,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:23:41,973 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:23:41,974 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:23:41,974 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:23:41,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:23:41,974 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:23:41,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:23:41,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:23:41,975 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:23:41,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:23:41,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:23:41,975 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:23:41,975 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:41,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:23:41,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:23:41,976 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-21 11:23:42,258 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:23:42,280 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:23:42,286 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:23:42,287 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:23:42,288 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:23:42,288 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-07-21 11:23:42,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83f7904c2/dc3ab94a2d9348678a01a6203598edd1/FLAG5a2fba012 [2020-07-21 11:23:42,926 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:23:42,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-07-21 11:23:42,945 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83f7904c2/dc3ab94a2d9348678a01a6203598edd1/FLAG5a2fba012 [2020-07-21 11:23:43,197 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83f7904c2/dc3ab94a2d9348678a01a6203598edd1 [2020-07-21 11:23:43,205 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:23:43,208 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:23:43,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:23:43,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:23:43,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:23:43,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:23:43" (1/1) ... [2020-07-21 11:23:43,216 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e4c152e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:43, skipping insertion in model container [2020-07-21 11:23:43,216 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:23:43" (1/1) ... [2020-07-21 11:23:43,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:23:43,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:23:43,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:23:43,714 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:23:43,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:23:43,850 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:23:43,851 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:43 WrapperNode [2020-07-21 11:23:43,851 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:23:43,852 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:23:43,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:23:43,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:23:43,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:43" (1/1) ... [2020-07-21 11:23:43,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:43" (1/1) ... [2020-07-21 11:23:43,885 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:43" (1/1) ... [2020-07-21 11:23:43,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:43" (1/1) ... [2020-07-21 11:23:43,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:43" (1/1) ... [2020-07-21 11:23:43,917 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:43" (1/1) ... [2020-07-21 11:23:43,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:43" (1/1) ... [2020-07-21 11:23:43,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:23:43,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:23:43,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:23:43,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:23:43,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:23:44,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:23:44,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:23:44,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-21 11:23:44,012 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-21 11:23:44,012 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 11:23:44,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-07-21 11:23:44,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2020-07-21 11:23:44,013 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-07-21 11:23:44,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-07-21 11:23:44,014 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-07-21 11:23:44,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-07-21 11:23:44,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-07-21 11:23:44,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-07-21 11:23:44,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2020-07-21 11:23:44,015 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2020-07-21 11:23:44,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-07-21 11:23:44,016 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2020-07-21 11:23:44,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2020-07-21 11:23:44,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2020-07-21 11:23:44,017 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-07-21 11:23:44,018 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-07-21 11:23:44,018 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-07-21 11:23:44,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-07-21 11:23:44,018 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-07-21 11:23:44,018 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:23:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-21 11:23:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-21 11:23:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-21 11:23:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-21 11:23:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-21 11:23:44,019 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-21 11:23:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-21 11:23:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-21 11:23:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-21 11:23:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-21 11:23:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-21 11:23:44,020 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-21 11:23:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-21 11:23:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-21 11:23:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-21 11:23:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-21 11:23:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-21 11:23:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-21 11:23:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-21 11:23:44,021 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-21 11:23:44,022 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-21 11:23:44,022 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-21 11:23:44,022 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-21 11:23:44,022 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-21 11:23:44,022 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-21 11:23:44,022 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-21 11:23:44,022 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-21 11:23:44,022 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-21 11:23:44,022 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-21 11:23:44,023 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-21 11:23:44,023 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-21 11:23:44,023 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-21 11:23:44,023 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-21 11:23:44,023 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-21 11:23:44,023 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-21 11:23:44,023 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-21 11:23:44,023 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-21 11:23:44,024 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-21 11:23:44,024 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-21 11:23:44,024 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-21 11:23:44,024 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-21 11:23:44,024 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-21 11:23:44,024 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-21 11:23:44,024 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-21 11:23:44,025 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-21 11:23:44,025 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-21 11:23:44,025 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-21 11:23:44,025 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-21 11:23:44,025 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-21 11:23:44,025 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-21 11:23:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-21 11:23:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-21 11:23:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-21 11:23:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-21 11:23:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-21 11:23:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-21 11:23:44,026 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-21 11:23:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-21 11:23:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-21 11:23:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-21 11:23:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 11:23:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-21 11:23:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-21 11:23:44,027 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 11:23:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-21 11:23:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-21 11:23:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-21 11:23:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-21 11:23:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-21 11:23:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-21 11:23:44,028 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-21 11:23:44,029 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-21 11:23:44,029 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-21 11:23:44,029 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-21 11:23:44,029 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-21 11:23:44,029 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-21 11:23:44,029 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-21 11:23:44,029 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-21 11:23:44,029 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-21 11:23:44,029 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-21 11:23:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-21 11:23:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-21 11:23:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-21 11:23:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-21 11:23:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-21 11:23:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-21 11:23:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-21 11:23:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-21 11:23:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-21 11:23:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-21 11:23:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-21 11:23:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-21 11:23:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-21 11:23:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-21 11:23:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-21 11:23:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-21 11:23:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-21 11:23:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-21 11:23:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-21 11:23:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-21 11:23:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-21 11:23:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-21 11:23:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:23:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 11:23:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 11:23:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-07-21 11:23:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-21 11:23:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2020-07-21 11:23:44,033 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-07-21 11:23:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-21 11:23:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-07-21 11:23:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-07-21 11:23:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-07-21 11:23:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-21 11:23:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-07-21 11:23:44,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-07-21 11:23:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2020-07-21 11:23:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2020-07-21 11:23:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-07-21 11:23:44,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2020-07-21 11:23:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2020-07-21 11:23:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2020-07-21 11:23:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 11:23:44,036 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-07-21 11:23:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-07-21 11:23:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-07-21 11:23:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-07-21 11:23:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-07-21 11:23:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:23:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:23:44,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 11:23:44,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-21 11:23:44,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:23:44,734 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:23:44,734 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-21 11:23:44,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:23:44 BoogieIcfgContainer [2020-07-21 11:23:44,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:23:44,741 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:23:44,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:23:44,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:23:44,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:23:43" (1/3) ... [2020-07-21 11:23:44,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4c5d09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:23:44, skipping insertion in model container [2020-07-21 11:23:44,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:23:43" (2/3) ... [2020-07-21 11:23:44,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c4c5d09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:23:44, skipping insertion in model container [2020-07-21 11:23:44,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:23:44" (3/3) ... [2020-07-21 11:23:44,748 INFO L109 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2020-07-21 11:23:44,759 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:23:44,767 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-21 11:23:44,778 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-21 11:23:44,798 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:23:44,798 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:23:44,799 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:23:44,799 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:23:44,799 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:23:44,799 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:23:44,800 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:23:44,800 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:23:44,822 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2020-07-21 11:23:44,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-21 11:23:44,830 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:23:44,831 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] [2020-07-21 11:23:44,832 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:23:44,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:23:44,838 INFO L82 PathProgramCache]: Analyzing trace with hash -326397870, now seen corresponding path program 1 times [2020-07-21 11:23:44,847 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:23:44,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688372406] [2020-07-21 11:23:44,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:45,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:23:45,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 11:23:45,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:23:45,192 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-21 11:23:45,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:23:45,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688372406] [2020-07-21 11:23:45,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:23:45,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 11:23:45,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662344210] [2020-07-21 11:23:45,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 11:23:45,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:23:45,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 11:23:45,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 11:23:45,220 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 2 states. [2020-07-21 11:23:45,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:23:45,262 INFO L93 Difference]: Finished difference Result 204 states and 249 transitions. [2020-07-21 11:23:45,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 11:23:45,263 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2020-07-21 11:23:45,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:23:45,275 INFO L225 Difference]: With dead ends: 204 [2020-07-21 11:23:45,276 INFO L226 Difference]: Without dead ends: 98 [2020-07-21 11:23:45,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 11:23:45,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-07-21 11:23:45,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-07-21 11:23:45,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-07-21 11:23:45,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2020-07-21 11:23:45,336 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 42 [2020-07-21 11:23:45,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:23:45,337 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2020-07-21 11:23:45,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 11:23:45,337 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2020-07-21 11:23:45,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-21 11:23:45,339 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:23:45,340 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] [2020-07-21 11:23:45,554 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:45,554 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:23:45,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:23:45,555 INFO L82 PathProgramCache]: Analyzing trace with hash -934339182, now seen corresponding path program 1 times [2020-07-21 11:23:45,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:23:45,556 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191095743] [2020-07-21 11:23:45,556 INFO L95 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:23:45,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:23:45,755 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:23:45,805 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-21 11:23:45,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:23:45,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191095743] [2020-07-21 11:23:45,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:23:45,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:23:45,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881076335] [2020-07-21 11:23:45,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:23:45,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:23:45,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:23:45,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:23:45,811 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand 4 states. [2020-07-21 11:23:45,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:23:45,856 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2020-07-21 11:23:45,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 11:23:45,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-07-21 11:23:45,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:23:45,866 INFO L225 Difference]: With dead ends: 104 [2020-07-21 11:23:45,866 INFO L226 Difference]: Without dead ends: 102 [2020-07-21 11:23:45,868 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:23:45,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-07-21 11:23:45,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-07-21 11:23:45,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-07-21 11:23:45,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2020-07-21 11:23:45,905 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 42 [2020-07-21 11:23:45,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:23:45,908 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2020-07-21 11:23:45,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:23:45,908 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2020-07-21 11:23:45,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-21 11:23:45,911 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:23:45,911 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] [2020-07-21 11:23:46,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:46,128 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:23:46,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:23:46,129 INFO L82 PathProgramCache]: Analyzing trace with hash 640264123, now seen corresponding path program 1 times [2020-07-21 11:23:46,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:23:46,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367609601] [2020-07-21 11:23:46,130 INFO L95 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:23:46,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 39 conjunts are in the unsatisfiable core [2020-07-21 11:23:46,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:23:46,406 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:23:46,432 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-21 11:23:46,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:23:46,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367609601] [2020-07-21 11:23:46,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:23:46,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:23:46,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244270711] [2020-07-21 11:23:46,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:23:46,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:23:46,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:23:46,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:23:46,435 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand 5 states. [2020-07-21 11:23:46,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:23:46,764 INFO L93 Difference]: Finished difference Result 267 states and 315 transitions. [2020-07-21 11:23:46,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 11:23:46,764 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-07-21 11:23:46,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:23:46,767 INFO L225 Difference]: With dead ends: 267 [2020-07-21 11:23:46,768 INFO L226 Difference]: Without dead ends: 179 [2020-07-21 11:23:46,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:23:46,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-07-21 11:23:46,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 152. [2020-07-21 11:23:46,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-07-21 11:23:46,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 180 transitions. [2020-07-21 11:23:46,791 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 180 transitions. Word has length 42 [2020-07-21 11:23:46,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:23:46,792 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 180 transitions. [2020-07-21 11:23:46,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:23:46,792 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 180 transitions. [2020-07-21 11:23:46,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-07-21 11:23:46,794 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:23:46,794 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] [2020-07-21 11:23:47,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:47,011 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:23:47,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:23:47,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1149911364, now seen corresponding path program 1 times [2020-07-21 11:23:47,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:23:47,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778924001] [2020-07-21 11:23:47,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:47,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:23:47,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:23:47,169 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:23:47,200 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-07-21 11:23:47,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:23:47,200 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778924001] [2020-07-21 11:23:47,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:23:47,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:23:47,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60531872] [2020-07-21 11:23:47,202 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:23:47,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:23:47,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:23:47,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:23:47,203 INFO L87 Difference]: Start difference. First operand 152 states and 180 transitions. Second operand 4 states. [2020-07-21 11:23:47,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:23:47,225 INFO L93 Difference]: Finished difference Result 272 states and 324 transitions. [2020-07-21 11:23:47,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 11:23:47,226 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-07-21 11:23:47,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:23:47,228 INFO L225 Difference]: With dead ends: 272 [2020-07-21 11:23:47,228 INFO L226 Difference]: Without dead ends: 158 [2020-07-21 11:23:47,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:23:47,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-07-21 11:23:47,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-07-21 11:23:47,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-07-21 11:23:47,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 186 transitions. [2020-07-21 11:23:47,284 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 186 transitions. Word has length 90 [2020-07-21 11:23:47,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:23:47,287 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 186 transitions. [2020-07-21 11:23:47,288 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:23:47,288 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 186 transitions. [2020-07-21 11:23:47,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-07-21 11:23:47,290 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:23:47,290 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] [2020-07-21 11:23:47,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:47,508 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:23:47,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:23:47,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1610969230, now seen corresponding path program 1 times [2020-07-21 11:23:47,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:23:47,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1382908977] [2020-07-21 11:23:47,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:23:47,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 459 conjuncts, 71 conjunts are in the unsatisfiable core [2020-07-21 11:23:47,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:23:47,758 INFO L384 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 [2020-07-21 11:23:47,759 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:47,763 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:47,763 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:47,764 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:3 [2020-07-21 11:23:47,865 INFO L384 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 [2020-07-21 11:23:47,866 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:47,884 INFO L624 ElimStorePlain]: treesize reduction 19, result has 34.5 percent of original size [2020-07-21 11:23:47,885 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_$Pointer$.offset_BEFORE_CALL_4| vanished before elimination [2020-07-21 11:23:47,885 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:47,886 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:37, output treesize:10 [2020-07-21 11:23:47,989 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:23:48,017 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 23 proven. 25 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-21 11:23:48,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:23:48,323 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:23:48,324 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 11:23:48,325 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 11:23:48,335 INFO L384 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 [2020-07-21 11:23:48,335 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:48,340 INFO L384 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 [2020-07-21 11:23:48,340 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:48,374 INFO L624 ElimStorePlain]: treesize reduction 62, result has 44.1 percent of original size [2020-07-21 11:23:48,374 INFO L512 ElimStorePlain]: Eliminatee |v_old(#memory_$Pointer$.base)_BEFORE_CALL_4| vanished before elimination [2020-07-21 11:23:48,375 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-07-21 11:23:48,375 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:125, output treesize:49 [2020-07-21 11:23:48,400 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 11:23:48,402 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:23:48,411 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:23:48,412 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 11:23:48,414 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 11:23:48,653 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:23:48,657 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:23:48,658 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:23:48,824 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:23:48,937 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:23:48,950 INFO L384 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 [2020-07-21 11:23:48,951 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:48,964 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:48,965 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 16 treesize of output 19 [2020-07-21 11:23:48,966 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 11:23:48,967 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-07-21 11:23:48,992 INFO L624 ElimStorePlain]: treesize reduction 25, result has 49.0 percent of original size [2020-07-21 11:23:48,999 INFO L384 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 [2020-07-21 11:23:49,000 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:49,009 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:49,009 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:49,009 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:65, output treesize:16 [2020-07-21 11:23:49,111 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:23:49,120 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-21 11:23:49,121 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:49,125 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2020-07-21 11:23:49,126 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-21 11:23:49,127 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-21 11:23:49,127 INFO L512 ElimStorePlain]: Eliminatee |#memory_$Pointer$.offset| vanished before elimination [2020-07-21 11:23:49,127 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-21 11:23:49,128 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:65, output treesize:1 [2020-07-21 11:23:49,262 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 20 proven. 17 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-07-21 11:23:49,262 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1382908977] [2020-07-21 11:23:49,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:23:49,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 21 [2020-07-21 11:23:49,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729807081] [2020-07-21 11:23:49,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-21 11:23:49,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:23:49,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-21 11:23:49,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2020-07-21 11:23:49,265 INFO L87 Difference]: Start difference. First operand 158 states and 186 transitions. Second operand 21 states. [2020-07-21 11:23:51,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:23:51,464 INFO L93 Difference]: Finished difference Result 390 states and 463 transitions. [2020-07-21 11:23:51,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-21 11:23:51,465 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 90 [2020-07-21 11:23:51,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:23:51,468 INFO L225 Difference]: With dead ends: 390 [2020-07-21 11:23:51,469 INFO L226 Difference]: Without dead ends: 242 [2020-07-21 11:23:51,471 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 165 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=268, Invalid=992, Unknown=0, NotChecked=0, Total=1260 [2020-07-21 11:23:51,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-07-21 11:23:51,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 183. [2020-07-21 11:23:51,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-07-21 11:23:51,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 221 transitions. [2020-07-21 11:23:51,493 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 221 transitions. Word has length 90 [2020-07-21 11:23:51,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:23:51,494 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 221 transitions. [2020-07-21 11:23:51,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-21 11:23:51,494 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 221 transitions. [2020-07-21 11:23:51,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-21 11:23:51,496 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:23:51,496 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] [2020-07-21 11:23:51,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:51,711 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:23:51,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:23:51,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1106436747, now seen corresponding path program 1 times [2020-07-21 11:23:51,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:23:51,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1426333554] [2020-07-21 11:23:51,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 11:23:51,948 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 11:23:51,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 11:23:51,989 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 11:23:52,054 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 11:23:52,054 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 11:23:52,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:23:52,333 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 11 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2020-07-21 11:23:52,334 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 9 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2020-07-21 11:23:52,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:23:52 BoogieIcfgContainer [2020-07-21 11:23:52,384 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:23:52,385 INFO L168 Benchmark]: Toolchain (without parser) took 9178.54 ms. Allocated memory was 138.9 MB in the beginning and 320.3 MB in the end (delta: 181.4 MB). Free memory was 100.9 MB in the beginning and 115.0 MB in the end (delta: -14.1 MB). Peak memory consumption was 167.3 MB. Max. memory is 7.1 GB. [2020-07-21 11:23:52,386 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 11:23:52,387 INFO L168 Benchmark]: CACSL2BoogieTranslator took 642.61 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.4 MB in the beginning and 164.6 MB in the end (delta: -64.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-07-21 11:23:52,388 INFO L168 Benchmark]: Boogie Preprocessor took 82.03 ms. Allocated memory is still 203.4 MB. Free memory was 164.6 MB in the beginning and 160.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-07-21 11:23:52,388 INFO L168 Benchmark]: RCFGBuilder took 804.06 ms. Allocated memory is still 203.4 MB. Free memory was 160.7 MB in the beginning and 100.1 MB in the end (delta: 60.5 MB). Peak memory consumption was 60.5 MB. Max. memory is 7.1 GB. [2020-07-21 11:23:52,389 INFO L168 Benchmark]: TraceAbstraction took 7642.87 ms. Allocated memory was 203.4 MB in the beginning and 320.3 MB in the end (delta: 116.9 MB). Free memory was 100.1 MB in the beginning and 115.0 MB in the end (delta: -14.8 MB). Peak memory consumption was 102.1 MB. Max. memory is 7.1 GB. [2020-07-21 11:23:52,393 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 642.61 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 100.4 MB in the beginning and 164.6 MB in the end (delta: -64.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.03 ms. Allocated memory is still 203.4 MB. Free memory was 164.6 MB in the beginning and 160.7 MB in the end (delta: 3.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 804.06 ms. Allocated memory is still 203.4 MB. Free memory was 160.7 MB in the beginning and 100.1 MB in the end (delta: 60.5 MB). Peak memory consumption was 60.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7642.87 ms. Allocated memory was 203.4 MB in the beginning and 320.3 MB in the end (delta: 116.9 MB). Free memory was 100.1 MB in the beginning and 115.0 MB in the end (delta: -14.8 MB). Peak memory consumption was 102.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 11 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 9 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# * 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) }; VAL [\old(mutexes)=null, \old(mutexes)=null, mutexes={23981:0}] [L681] CALL foo() VAL [mutexes={23981:0}] [L670] FCALL ldv_initialize() VAL [mutexes={23981:0}] [L671] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [\old(size)=8, mutexes={23981:0}] [L565] void *ptr = malloc(size); VAL [\old(size)=8, malloc(size)={5:0}, mutexes={23981:0}, ptr={5:0}, size=8] [L566] CALL assume_abort_if_not(ptr!=0) VAL [\old(cond)=1, mutexes={23981:0}] [L554] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, mutexes={23981:0}] [L566] RET assume_abort_if_not(ptr!=0) VAL [\old(size)=8, malloc(size)={5:0}, mutexes={23981:0}, ptr={5:0}, size=8] [L567] return ptr; VAL [\old(size)=8, \result={5:0}, malloc(size)={5:0}, mutexes={23981:0}, ptr={5:0}, size=8] [L671] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [ldv_successful_malloc(sizeof(struct mutex))={5:0}, mutexes={23981:0}] [L671] struct mutex *m1 = ldv_successful_malloc(sizeof(struct mutex)); [L672] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [\old(size)=8, mutexes={23981:0}] [L565] void *ptr = malloc(size); VAL [\old(size)=8, malloc(size)={-1:0}, mutexes={23981:0}, ptr={-1:0}, size=8] [L566] CALL assume_abort_if_not(ptr!=0) VAL [\old(cond)=1, mutexes={23981:0}] [L554] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, mutexes={23981:0}] [L566] RET assume_abort_if_not(ptr!=0) VAL [\old(size)=8, malloc(size)={-1:0}, mutexes={23981:0}, ptr={-1:0}, size=8] [L567] return ptr; VAL [\old(size)=8, \result={-1:0}, malloc(size)={-1:0}, mutexes={23981:0}, ptr={-1:0}, size=8] [L672] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [ldv_successful_malloc(sizeof(struct mutex))={-1:0}, m1={5:0}, mutexes={23981:0}] [L672] struct mutex *m2 = ldv_successful_malloc(sizeof(struct mutex)); [L673] CALL mutex_lock(m1) VAL [m={5:0}, mutexes={23981:0}] [L658] CALL ldv_is_in_set(m, &mutexes) VAL [e={5:0}, mutexes={23981:0}, s={23981:0}] [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) );}) VAL [__mptr={23981:0}, e={5:0}, e={5:0}, m={23981:-4}, mutexes={23981:0}, s={23981:0}, s={23981:0}] [L644] COND FALSE !(&m->list != (s)) VAL [__mptr={23981:0}, e={5:0}, e={5:0}, m={23981:-4}, mutexes={23981:0}, s={23981:0}, s={23981:0}] [L649] return 0; VAL [\result=0, __mptr={23981:0}, e={5:0}, e={5:0}, m={23981:-4}, mutexes={23981:0}, s={23981:0}, s={23981:0}] [L658] RET ldv_is_in_set(m, &mutexes) VAL [ldv_is_in_set(m, &mutexes)=0, m={5:0}, m={5:0}, mutexes={23981:0}] [L658] COND FALSE !(ldv_is_in_set(m, &mutexes)) [L659] CALL ldv_set_add(m, &mutexes) VAL [mutexes={23981:0}, new={5:0}, s={23981:0}] [L625] CALL, EXPR ldv_is_in_set(new, s) VAL [e={5:0}, mutexes={23981:0}, s={23981:0}] [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) );}) VAL [__mptr={23981:0}, e={5:0}, e={5:0}, m={23981:-4}, mutexes={23981:0}, s={23981:0}, s={23981:0}] [L644] COND FALSE !(&m->list != (s)) VAL [__mptr={23981:0}, e={5:0}, e={5:0}, m={23981:-4}, mutexes={23981:0}, s={23981:0}, s={23981:0}] [L649] return 0; VAL [\result=0, __mptr={23981:0}, e={5:0}, e={5:0}, m={23981:-4}, mutexes={23981:0}, s={23981:0}, s={23981:0}] [L625] RET, EXPR ldv_is_in_set(new, s) VAL [ldv_is_in_set(new, s)=0, mutexes={23981:0}, new={5:0}, new={5:0}, s={23981:0}, s={23981:0}] [L625] COND TRUE !ldv_is_in_set(new, s) [L626] struct ldv_list_element *le; VAL [mutexes={23981:0}, new={5:0}, new={5:0}, s={23981:0}, s={23981:0}] [L627] CALL, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [\old(size)=12, mutexes={23981:0}] [L565] void *ptr = malloc(size); VAL [\old(size)=12, malloc(size)={3:0}, mutexes={23981:0}, ptr={3:0}, size=12] [L566] CALL assume_abort_if_not(ptr!=0) VAL [\old(cond)=1, mutexes={23981:0}] [L554] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, mutexes={23981:0}] [L566] RET assume_abort_if_not(ptr!=0) VAL [\old(size)=12, malloc(size)={3:0}, mutexes={23981:0}, ptr={3:0}, size=12] [L567] return ptr; VAL [\old(size)=12, \result={3:0}, malloc(size)={3:0}, mutexes={23981:0}, ptr={3:0}, size=12] [L627] RET, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [ldv_successful_malloc(sizeof(struct ldv_list_element))={3:0}, mutexes={23981:0}, new={5:0}, new={5:0}, s={23981:0}, s={23981:0}] [L627] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L628] le->e = new VAL [le={3:0}, mutexes={23981:0}, new={5:0}, new={5:0}, s={23981:0}, s={23981:0}] [L629] CALL ldv_list_add(&le->list, s) VAL [head={23981:0}, mutexes={23981:0}, new={3:4}] [L597] EXPR head->next VAL [head={23981:0}, head={23981:0}, head->next={23981:0}, mutexes={23981:0}, new={3:4}, new={3:4}] [L597] CALL __ldv_list_add(new, head, head->next) VAL [mutexes={23981:0}, new={3:4}, next={23981:0}, prev={23981:0}] [L585] next->prev = new [L586] new->next = next [L587] new->prev = prev [L588] prev->next = new VAL [mutexes={23981:0}, new={3:4}, new={3:4}, next={23981:0}, next={23981:0}, prev={23981:0}, prev={23981:0}] [L597] RET __ldv_list_add(new, head, head->next) VAL [head={23981:0}, head={23981:0}, head->next={23981:0}, mutexes={23981:0}, new={3:4}, new={3:4}] [L629] RET ldv_list_add(&le->list, s) VAL [le={3:0}, mutexes={23981:0}, new={5:0}, new={5:0}, s={23981:0}, s={23981:0}] [L659] RET ldv_set_add(m, &mutexes) VAL [m={5:0}, m={5:0}, mutexes={23981:0}] [L673] RET mutex_lock(m1) VAL [m1={5:0}, m2={-1:0}, mutexes={23981:0}] [L674] CALL mutex_lock(m1) VAL [m={5:0}, mutexes={23981:0}] [L658] CALL ldv_is_in_set(m, &mutexes) VAL [e={5:0}, mutexes={23981:0}, s={23981:0}] [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) );}) VAL [__mptr={3:4}, e={5:0}, e={5:0}, m={3:0}, mutexes={23981:0}, s={23981:0}, s={23981:0}] [L644] COND TRUE &m->list != (s) [L645] EXPR m->e VAL [__mptr={3:4}, e={5:0}, e={5:0}, m={3:0}, m->e={5:0}, mutexes={23981:0}, s={23981:0}, s={23981:0}] [L645] COND TRUE m->e == e [L646] return 1; VAL [\result=1, __mptr={3:4}, e={5:0}, e={5:0}, m={3:0}, mutexes={23981:0}, s={23981:0}, s={23981:0}] [L658] RET ldv_is_in_set(m, &mutexes) VAL [ldv_is_in_set(m, &mutexes)=1, m={5:0}, m={5:0}, mutexes={23981:0}] [L658] COND TRUE ldv_is_in_set(m, &mutexes) [L658] __VERIFIER_error() VAL [m={5:0}, m={5:0}, mutexes={23981:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 25 procedures, 129 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.4s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 599 SDtfs, 332 SDslu, 964 SDs, 0 SdLazy, 1331 SolverSat, 182 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 415 GetRequests, 370 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=183occurred 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, 86 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 392 NumberOfCodeBlocks, 392 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 390 ConstructedInterpolants, 4 QuantifiedInterpolants, 195243 SizeOfPredicates, 52 NumberOfNonLiveVariables, 1537 ConjunctsInSsa, 121 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 189/231 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...