/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/ldv-sets/test_mutex_unlock_at_exit.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:28:08,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:28:08,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:28:08,842 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:28:08,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:28:08,844 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:28:08,846 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:28:08,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:28:08,859 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:28:08,860 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:28:08,861 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:28:08,862 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:28:08,862 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:28:08,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:28:08,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:28:08,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:28:08,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:28:08,867 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:28:08,868 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:28:08,870 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:28:08,872 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:28:08,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:28:08,874 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:28:08,875 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:28:08,877 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:28:08,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:28:08,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:28:08,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:28:08,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:28:08,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:28:08,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:28:08,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:28:08,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:28:08,882 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:28:08,883 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:28:08,883 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:28:08,884 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:28:08,884 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:28:08,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:28:08,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:28:08,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:28:08,887 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:28:08,906 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:28:08,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:28:08,910 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:28:08,910 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:28:08,910 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:28:08,911 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:28:08,911 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:28:08,911 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:28:08,911 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:28:08,911 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:28:08,912 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:28:08,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:28:08,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:28:08,913 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:28:08,913 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:28:08,913 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:28:08,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:28:08,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:28:08,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:28:08,914 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:28:08,914 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:28:08,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:28:08,916 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:28:08,916 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:28:08,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:28:08,917 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:28:08,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:28:08,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:28:08,918 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:28:09,186 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:28:09,205 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:28:09,210 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:28:09,212 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:28:09,212 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:28:09,213 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_unlock_at_exit.i [2019-11-07 00:28:09,285 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/060aa612a/48375588b9df4bf19902e78b9bf35646/FLAG9a4c2a0ad [2019-11-07 00:28:09,839 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:28:09,840 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_unlock_at_exit.i [2019-11-07 00:28:09,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/060aa612a/48375588b9df4bf19902e78b9bf35646/FLAG9a4c2a0ad [2019-11-07 00:28:10,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/060aa612a/48375588b9df4bf19902e78b9bf35646 [2019-11-07 00:28:10,122 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:28:10,124 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:28:10,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:28:10,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:28:10,128 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:28:10,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:28:10" (1/1) ... [2019-11-07 00:28:10,132 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22e2c651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:10, skipping insertion in model container [2019-11-07 00:28:10,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:28:10" (1/1) ... [2019-11-07 00:28:10,140 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:28:10,204 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:28:10,651 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:28:10,663 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:28:10,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:28:10,813 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:28:10,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:10 WrapperNode [2019-11-07 00:28:10,814 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:28:10,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:28:10,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:28:10,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:28:10,825 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:10" (1/1) ... [2019-11-07 00:28:10,825 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:10" (1/1) ... [2019-11-07 00:28:10,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:10" (1/1) ... [2019-11-07 00:28:10,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:10" (1/1) ... [2019-11-07 00:28:10,870 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:10" (1/1) ... [2019-11-07 00:28:10,876 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:10" (1/1) ... [2019-11-07 00:28:10,880 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:10" (1/1) ... [2019-11-07 00:28:10,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:28:10,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:28:10,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:28:10,889 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:28:10,890 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:28:10,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:28:10,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:28:10,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-07 00:28:10,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-07 00:28:10,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2019-11-07 00:28:10,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2019-11-07 00:28:10,953 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2019-11-07 00:28:10,953 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2019-11-07 00:28:10,954 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2019-11-07 00:28:10,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2019-11-07 00:28:10,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2019-11-07 00:28:10,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2019-11-07 00:28:10,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2019-11-07 00:28:10,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2019-11-07 00:28:10,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2019-11-07 00:28:10,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2019-11-07 00:28:10,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2019-11-07 00:28:10,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2019-11-07 00:28:10,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2019-11-07 00:28:10,956 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2019-11-07 00:28:10,956 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2019-11-07 00:28:10,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2019-11-07 00:28:10,956 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2019-11-07 00:28:10,956 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:28:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-07 00:28:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-07 00:28:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-07 00:28:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-07 00:28:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-07 00:28:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-07 00:28:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-07 00:28:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-07 00:28:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-07 00:28:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-07 00:28:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-07 00:28:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-07 00:28:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-07 00:28:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-07 00:28:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-07 00:28:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-07 00:28:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-07 00:28:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-07 00:28:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-07 00:28:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-07 00:28:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-07 00:28:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-07 00:28:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-07 00:28:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-07 00:28:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-07 00:28:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-07 00:28:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-07 00:28:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-07 00:28:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-07 00:28:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-07 00:28:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-07 00:28:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-07 00:28:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-07 00:28:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-07 00:28:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-07 00:28:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-07 00:28:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-07 00:28:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-07 00:28:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-07 00:28:10,963 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-07 00:28:10,963 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-07 00:28:10,963 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-07 00:28:10,963 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-07 00:28:10,963 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-07 00:28:10,963 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-07 00:28:10,964 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-07 00:28:10,964 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-07 00:28:10,964 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-07 00:28:10,964 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-07 00:28:10,964 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-07 00:28:10,964 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-07 00:28:10,965 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-07 00:28:10,965 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:28:10,965 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-07 00:28:10,965 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-07 00:28:10,965 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:28:10,965 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-11-07 00:28:10,965 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-07 00:28:10,966 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-07 00:28:10,966 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-07 00:28:10,966 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-07 00:28:10,966 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-07 00:28:10,966 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-07 00:28:10,966 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-07 00:28:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-07 00:28:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-07 00:28:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-07 00:28:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-07 00:28:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-07 00:28:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-07 00:28:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-07 00:28:10,968 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-07 00:28:10,968 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-07 00:28:10,968 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-07 00:28:10,968 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-07 00:28:10,968 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-07 00:28:10,968 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-07 00:28:10,968 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-07 00:28:10,969 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-07 00:28:10,969 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-07 00:28:10,969 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-07 00:28:10,969 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-07 00:28:10,969 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-07 00:28:10,969 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-07 00:28:10,969 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-07 00:28:10,970 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-07 00:28:10,970 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-07 00:28:10,970 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-07 00:28:10,970 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-07 00:28:10,970 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-07 00:28:10,970 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-07 00:28:10,970 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-07 00:28:10,971 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-07 00:28:10,971 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-07 00:28:10,971 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-07 00:28:10,971 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-07 00:28:10,971 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-07 00:28:10,971 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-07 00:28:10,972 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-07 00:28:10,972 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-07 00:28:10,972 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-07 00:28:10,972 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-07 00:28:10,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:28:10,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 00:28:10,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:28:10,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_pointer [2019-11-07 00:28:10,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2019-11-07 00:28:10,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:28:10,973 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2019-11-07 00:28:10,973 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2019-11-07 00:28:10,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:28:10,973 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2019-11-07 00:28:10,974 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2019-11-07 00:28:10,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2019-11-07 00:28:10,974 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:28:10,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2019-11-07 00:28:10,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2019-11-07 00:28:10,974 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2019-11-07 00:28:10,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2019-11-07 00:28:10,975 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2019-11-07 00:28:10,982 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2019-11-07 00:28:10,983 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2019-11-07 00:28:10,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2019-11-07 00:28:10,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:28:10,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2019-11-07 00:28:10,984 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2019-11-07 00:28:10,984 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2019-11-07 00:28:10,984 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2019-11-07 00:28:10,985 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2019-11-07 00:28:10,985 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:28:10,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:28:10,985 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:28:10,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-07 00:28:10,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:28:11,695 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:28:11,696 INFO L284 CfgBuilder]: Removed 2 assume(true) statements. [2019-11-07 00:28:11,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:28:11 BoogieIcfgContainer [2019-11-07 00:28:11,698 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:28:11,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:28:11,700 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:28:11,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:28:11,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:28:10" (1/3) ... [2019-11-07 00:28:11,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@96238c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:28:11, skipping insertion in model container [2019-11-07 00:28:11,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:28:10" (2/3) ... [2019-11-07 00:28:11,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@96238c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:28:11, skipping insertion in model container [2019-11-07 00:28:11,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:28:11" (3/3) ... [2019-11-07 00:28:11,707 INFO L109 eAbstractionObserver]: Analyzing ICFG test_mutex_unlock_at_exit.i [2019-11-07 00:28:11,718 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:28:11,727 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-07 00:28:11,739 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-07 00:28:11,767 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:28:11,767 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:28:11,768 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:28:11,768 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:28:11,768 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:28:11,768 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:28:11,768 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:28:11,768 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:28:11,788 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2019-11-07 00:28:11,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-07 00:28:11,795 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:28:11,796 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:28:11,798 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:28:11,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:28:11,804 INFO L82 PathProgramCache]: Analyzing trace with hash 677281707, now seen corresponding path program 1 times [2019-11-07 00:28:11,815 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:28:11,815 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261636036] [2019-11-07 00:28:11,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:28:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:28:12,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:28:12,078 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261636036] [2019-11-07 00:28:12,079 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:28:12,081 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:28:12,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058410951] [2019-11-07 00:28:12,089 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:28:12,091 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:28:12,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:28:12,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:28:12,115 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 2 states. [2019-11-07 00:28:12,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:28:12,184 INFO L93 Difference]: Finished difference Result 186 states and 220 transitions. [2019-11-07 00:28:12,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:28:12,185 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 30 [2019-11-07 00:28:12,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:28:12,203 INFO L225 Difference]: With dead ends: 186 [2019-11-07 00:28:12,203 INFO L226 Difference]: Without dead ends: 91 [2019-11-07 00:28:12,209 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:28:12,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-11-07 00:28:12,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2019-11-07 00:28:12,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-11-07 00:28:12,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2019-11-07 00:28:12,289 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 30 [2019-11-07 00:28:12,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:28:12,291 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2019-11-07 00:28:12,291 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:28:12,291 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2019-11-07 00:28:12,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-07 00:28:12,294 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:28:12,294 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:28:12,295 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:28:12,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:28:12,295 INFO L82 PathProgramCache]: Analyzing trace with hash 392179489, now seen corresponding path program 1 times [2019-11-07 00:28:12,295 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:28:12,296 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482793373] [2019-11-07 00:28:12,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:28:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:28:12,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:28:12,488 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482793373] [2019-11-07 00:28:12,488 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:28:12,488 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-07 00:28:12,489 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009646088] [2019-11-07 00:28:12,492 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:28:12,492 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:28:12,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:28:12,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:28:12,493 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 4 states. [2019-11-07 00:28:12,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:28:12,541 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2019-11-07 00:28:12,541 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:28:12,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-11-07 00:28:12,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:28:12,547 INFO L225 Difference]: With dead ends: 97 [2019-11-07 00:28:12,549 INFO L226 Difference]: Without dead ends: 95 [2019-11-07 00:28:12,550 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:28:12,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2019-11-07 00:28:12,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2019-11-07 00:28:12,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2019-11-07 00:28:12,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 106 transitions. [2019-11-07 00:28:12,577 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 106 transitions. Word has length 30 [2019-11-07 00:28:12,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:28:12,578 INFO L462 AbstractCegarLoop]: Abstraction has 95 states and 106 transitions. [2019-11-07 00:28:12,578 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:28:12,578 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 106 transitions. [2019-11-07 00:28:12,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-11-07 00:28:12,580 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:28:12,580 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:28:12,580 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:28:12,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:28:12,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1966782794, now seen corresponding path program 1 times [2019-11-07 00:28:12,581 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:28:12,581 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779120262] [2019-11-07 00:28:12,584 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:28:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:28:12,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-07 00:28:12,794 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779120262] [2019-11-07 00:28:12,794 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:28:12,794 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-07 00:28:12,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857786816] [2019-11-07 00:28:12,795 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:28:12,796 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:28:12,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:28:12,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-07 00:28:12,796 INFO L87 Difference]: Start difference. First operand 95 states and 106 transitions. Second operand 5 states. [2019-11-07 00:28:13,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:28:13,340 INFO L93 Difference]: Finished difference Result 254 states and 303 transitions. [2019-11-07 00:28:13,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:28:13,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-11-07 00:28:13,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:28:13,345 INFO L225 Difference]: With dead ends: 254 [2019-11-07 00:28:13,345 INFO L226 Difference]: Without dead ends: 173 [2019-11-07 00:28:13,349 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:28:13,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2019-11-07 00:28:13,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 138. [2019-11-07 00:28:13,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2019-11-07 00:28:13,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 163 transitions. [2019-11-07 00:28:13,399 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 163 transitions. Word has length 30 [2019-11-07 00:28:13,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:28:13,400 INFO L462 AbstractCegarLoop]: Abstraction has 138 states and 163 transitions. [2019-11-07 00:28:13,400 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:28:13,400 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 163 transitions. [2019-11-07 00:28:13,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-07 00:28:13,403 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:28:13,404 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:28:13,404 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:28:13,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:28:13,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1243409077, now seen corresponding path program 1 times [2019-11-07 00:28:13,405 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:28:13,405 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007710183] [2019-11-07 00:28:13,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:28:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:28:13,543 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-11-07 00:28:13,543 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007710183] [2019-11-07 00:28:13,543 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12128748] [2019-11-07 00:28:13,544 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:28:13,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:28:13,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-07 00:28:13,743 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:28:13,767 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-11-07 00:28:13,767 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:28:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-11-07 00:28:13,901 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:28:13,901 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 4 [2019-11-07 00:28:13,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320216174] [2019-11-07 00:28:13,902 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-07 00:28:13,902 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:28:13,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-07 00:28:13,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:28:13,903 INFO L87 Difference]: Start difference. First operand 138 states and 163 transitions. Second operand 4 states. [2019-11-07 00:28:13,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:28:13,925 INFO L93 Difference]: Finished difference Result 250 states and 296 transitions. [2019-11-07 00:28:13,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-07 00:28:13,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2019-11-07 00:28:13,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:28:13,928 INFO L225 Difference]: With dead ends: 250 [2019-11-07 00:28:13,928 INFO L226 Difference]: Without dead ends: 144 [2019-11-07 00:28:13,930 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-07 00:28:13,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2019-11-07 00:28:13,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2019-11-07 00:28:13,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-11-07 00:28:13,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 169 transitions. [2019-11-07 00:28:13,947 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 169 transitions. Word has length 78 [2019-11-07 00:28:13,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:28:13,947 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 169 transitions. [2019-11-07 00:28:13,947 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-07 00:28:13,947 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 169 transitions. [2019-11-07 00:28:13,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2019-11-07 00:28:13,950 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:28:13,950 INFO L410 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:28:14,155 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:28:14,155 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:28:14,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:28:14,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1517471517, now seen corresponding path program 1 times [2019-11-07 00:28:14,156 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:28:14,157 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120283889] [2019-11-07 00:28:14,157 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:28:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:28:14,506 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 11 proven. 25 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-07 00:28:14,507 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120283889] [2019-11-07 00:28:14,507 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883442811] [2019-11-07 00:28:14,507 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:28:14,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:28:14,676 INFO L256 TraceCheckSpWp]: Trace formula consists of 442 conjuncts, 55 conjunts are in the unsatisfiable core [2019-11-07 00:28:14,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:28:14,760 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-11-07 00:28:14,761 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 00:28:14,769 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 00:28:14,772 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-11-07 00:28:14,773 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-07 00:28:14,779 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 00:28:14,780 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-07 00:28:14,780 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2019-11-07 00:28:14,838 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-11-07 00:28:14,839 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 00:28:14,857 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 00:28:14,861 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-11-07 00:28:14,862 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-07 00:28:14,867 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 00:28:14,868 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-07 00:28:14,868 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2019-11-07 00:28:15,063 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-11-07 00:28:15,063 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:28:15,622 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:28:15,633 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2019-11-07 00:28:15,634 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 00:28:15,643 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 00:28:15,647 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2019-11-07 00:28:15,647 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-07 00:28:15,654 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 00:28:15,655 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-07 00:28:15,655 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:41, output treesize:25 [2019-11-07 00:28:15,807 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:28:15,821 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2019-11-07 00:28:15,822 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 00:28:15,829 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 00:28:15,834 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2019-11-07 00:28:15,834 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-07 00:28:15,840 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 00:28:15,840 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-07 00:28:15,841 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2019-11-07 00:28:15,930 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:28:16,017 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:28:16,024 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2019-11-07 00:28:16,025 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 00:28:16,031 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2019-11-07 00:28:16,032 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-07 00:28:16,057 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 00:28:16,065 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2019-11-07 00:28:16,066 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-07 00:28:16,071 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2019-11-07 00:28:16,071 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-07 00:28:16,087 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 00:28:16,088 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 2 xjuncts. [2019-11-07 00:28:16,088 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:81, output treesize:49 [2019-11-07 00:28:16,127 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:28:16,138 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:28:16,202 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-11-07 00:28:16,203 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:28:16,203 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14, 10] total 28 [2019-11-07 00:28:16,204 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880336733] [2019-11-07 00:28:16,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 00:28:16,204 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:28:16,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 00:28:16,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=626, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:28:16,205 INFO L87 Difference]: Start difference. First operand 144 states and 169 transitions. Second operand 10 states. [2019-11-07 00:28:17,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:28:17,667 INFO L93 Difference]: Finished difference Result 323 states and 381 transitions. [2019-11-07 00:28:17,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-11-07 00:28:17,668 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 78 [2019-11-07 00:28:17,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:28:17,672 INFO L225 Difference]: With dead ends: 323 [2019-11-07 00:28:17,672 INFO L226 Difference]: Without dead ends: 205 [2019-11-07 00:28:17,674 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 146 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=365, Invalid=1357, Unknown=0, NotChecked=0, Total=1722 [2019-11-07 00:28:17,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2019-11-07 00:28:17,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 148. [2019-11-07 00:28:17,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-11-07 00:28:17,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 171 transitions. [2019-11-07 00:28:17,696 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 171 transitions. Word has length 78 [2019-11-07 00:28:17,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:28:17,696 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 171 transitions. [2019-11-07 00:28:17,696 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 00:28:17,697 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 171 transitions. [2019-11-07 00:28:17,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2019-11-07 00:28:17,698 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:28:17,698 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:28:17,913 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:28:17,914 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:28:17,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:28:17,914 INFO L82 PathProgramCache]: Analyzing trace with hash 9521619, now seen corresponding path program 1 times [2019-11-07 00:28:17,915 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:28:17,916 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247982784] [2019-11-07 00:28:17,916 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:28:18,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:28:19,581 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-07 00:28:19,581 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247982784] [2019-11-07 00:28:19,582 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1763875372] [2019-11-07 00:28:19,582 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:28:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:28:19,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 132 conjunts are in the unsatisfiable core [2019-11-07 00:28:19,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:28:19,827 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-07 00:28:19,827 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 00:28:19,835 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 00:28:19,836 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-07 00:28:19,836 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:19 [2019-11-07 00:28:20,125 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 00:28:20,125 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-11-07 00:28:20,126 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 00:28:20,131 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 00:28:20,131 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-07 00:28:20,131 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:24, output treesize:18 [2019-11-07 00:28:20,261 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-11-07 00:28:20,262 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 00:28:20,267 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-07 00:28:20,268 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-07 00:28:20,268 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:10 [2019-11-07 00:28:20,786 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 00:28:20,948 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 39 [2019-11-07 00:28:20,948 INFO L341 Elim1Store]: treesize reduction 100, result has 50.2 percent of original size [2019-11-07 00:28:20,949 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 108 [2019-11-07 00:28:20,950 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 00:28:21,122 WARN L191 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 54 [2019-11-07 00:28:21,123 INFO L567 ElimStorePlain]: treesize reduction 36, result has 81.2 percent of original size [2019-11-07 00:28:21,123 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:28:21,124 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:28:21,125 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-07 00:28:21,126 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:161, output treesize:155 [2019-11-07 00:28:21,126 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:28:21,126 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:28:21,340 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:28:21,340 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:28:22,176 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:28:22,176 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:28:24,485 WARN L191 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 94 DAG size of output: 68 [2019-11-07 00:28:24,496 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-11-07 00:28:43,550 WARN L191 SmtUtils]: Spent 8.57 s on a formula simplification that was a NOOP. DAG size: 155 [2019-11-07 00:28:57,426 WARN L191 SmtUtils]: Spent 2.63 s on a formula simplification. DAG size of input: 153 DAG size of output: 104 [2019-11-07 00:28:57,434 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:28:57,466 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 00:28:57,484 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 00:28:57,508 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 00:28:57,513 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 00:28:57,520 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 00:28:57,577 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 00:28:57,602 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 00:28:57,603 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-07 00:28:57,725 INFO L341 Elim1Store]: treesize reduction 70, result has 38.6 percent of original size [2019-11-07 00:28:57,726 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 332 treesize of output 137 [2019-11-07 00:28:57,727 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-07 00:28:57,734 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 00:28:57,743 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 00:28:57,761 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 00:28:57,764 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 00:28:57,766 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 00:28:58,025 WARN L191 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2019-11-07 00:28:58,026 INFO L341 Elim1Store]: treesize reduction 148, result has 55.2 percent of original size [2019-11-07 00:28:58,027 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 5 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 335 treesize of output 265 [2019-11-07 00:28:58,028 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-07 00:28:58,033 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 00:28:58,041 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 00:28:58,042 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 00:28:58,043 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 00:28:58,044 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 00:28:58,054 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 00:28:58,061 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-07 00:28:58,067 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-07 00:28:58,140 INFO L341 Elim1Store]: treesize reduction 17, result has 85.1 percent of original size [2019-11-07 00:28:58,141 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 334 treesize of output 192 [2019-11-07 00:28:58,142 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-07 00:28:58,255 WARN L191 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 40 [2019-11-07 00:28:58,255 INFO L567 ElimStorePlain]: treesize reduction 501, result has 17.7 percent of original size [2019-11-07 00:28:58,256 INFO L496 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-07 00:28:58,256 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 5 variables, input treesize:1464, output treesize:130