/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 SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -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 [2020-07-20 13:56:45,908 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:56:45,910 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:56:45,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:56:45,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:56:45,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:56:45,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:56:45,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:56:45,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:56:45,947 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:56:45,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:56:45,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:56:45,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:56:45,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:56:45,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:56:45,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:56:45,959 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:56:45,962 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:56:45,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:56:45,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:56:45,971 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:56:45,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:56:45,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:56:45,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:56:45,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 13:56:45,978 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 13:56:45,978 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 13:56:45,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 13:56:45,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 13:56:45,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 13:56:45,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 13:56:45,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 13:56:45,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 13:56:45,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 13:56:45,989 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 13:56:45,989 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 13:56:45,990 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 13:56:45,990 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 13:56:45,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:56:45,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:56:45,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:56:45,993 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 [2020-07-20 13:56:46,014 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:56:46,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:56:46,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:56:46,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:56:46,019 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:56:46,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:56:46,019 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:56:46,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:56:46,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:56:46,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:56:46,021 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:56:46,021 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:56:46,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:56:46,022 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:56:46,022 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:56:46,022 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:56:46,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:56:46,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:56:46,023 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:56:46,023 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:56:46,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:56:46,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:56:46,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:56:46,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:56:46,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:56:46,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:56:46,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:56:46,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:56:46,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:56:46,025 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 -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 13:56:46,317 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:56:46,333 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:56:46,336 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:56:46,337 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:56:46,340 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:56:46,340 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-07-20 13:56:46,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0deb74eb/f567222e77514c67b21584d25835cbb2/FLAG6e21984bf [2020-07-20 13:56:46,917 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:56:46,921 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_lock.i [2020-07-20 13:56:46,950 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0deb74eb/f567222e77514c67b21584d25835cbb2/FLAG6e21984bf [2020-07-20 13:56:47,258 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0deb74eb/f567222e77514c67b21584d25835cbb2 [2020-07-20 13:56:47,265 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:56:47,268 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:56:47,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:56:47,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:56:47,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:56:47,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:56:47" (1/1) ... [2020-07-20 13:56:47,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25bc7809 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:56:47, skipping insertion in model container [2020-07-20 13:56:47,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:56:47" (1/1) ... [2020-07-20 13:56:47,284 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:56:47,346 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:56:47,771 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:56:47,780 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:56:47,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:56:47,927 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:56:47,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:56:47 WrapperNode [2020-07-20 13:56:47,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:56:47,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:56:47,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:56:47,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:56:47,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:56:47" (1/1) ... [2020-07-20 13:56:47,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:56:47" (1/1) ... [2020-07-20 13:56:47,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:56:47" (1/1) ... [2020-07-20 13:56:47,966 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:56:47" (1/1) ... [2020-07-20 13:56:47,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:56:47" (1/1) ... [2020-07-20 13:56:47,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:56:47" (1/1) ... [2020-07-20 13:56:47,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:56:47" (1/1) ... [2020-07-20 13:56:48,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:56:48,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:56:48,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:56:48,007 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:56:48,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:56:47" (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 [2020-07-20 13:56:48,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:56:48,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:56:48,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-20 13:56:48,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-20 13:56:48,064 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 13:56:48,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2020-07-20 13:56:48,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2020-07-20 13:56:48,064 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2020-07-20 13:56:48,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2020-07-20 13:56:48,065 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2020-07-20 13:56:48,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2020-07-20 13:56:48,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2020-07-20 13:56:48,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2020-07-20 13:56:48,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2020-07-20 13:56:48,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2020-07-20 13:56:48,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2020-07-20 13:56:48,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2020-07-20 13:56:48,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2020-07-20 13:56:48,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2020-07-20 13:56:48,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2020-07-20 13:56:48,067 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2020-07-20 13:56:48,067 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2020-07-20 13:56:48,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2020-07-20 13:56:48,067 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-07-20 13:56:48,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:56:48,067 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-20 13:56:48,068 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-20 13:56:48,068 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-20 13:56:48,068 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-20 13:56:48,068 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-20 13:56:48,068 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-20 13:56:48,068 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-20 13:56:48,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-20 13:56:48,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-20 13:56:48,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-20 13:56:48,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-20 13:56:48,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-20 13:56:48,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-20 13:56:48,069 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-20 13:56:48,070 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-20 13:56:48,070 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-20 13:56:48,070 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-20 13:56:48,070 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-20 13:56:48,070 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-20 13:56:48,070 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-20 13:56:48,070 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-20 13:56:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-20 13:56:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-20 13:56:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-20 13:56:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-20 13:56:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-20 13:56:48,071 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-20 13:56:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-20 13:56:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-20 13:56:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-20 13:56:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-20 13:56:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-20 13:56:48,072 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-20 13:56:48,073 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-20 13:56:48,073 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-20 13:56:48,073 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-20 13:56:48,073 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-20 13:56:48,073 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-20 13:56:48,073 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-20 13:56:48,073 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-20 13:56:48,074 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-20 13:56:48,074 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-20 13:56:48,074 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-20 13:56:48,074 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-20 13:56:48,074 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-20 13:56:48,074 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-20 13:56:48,074 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-20 13:56:48,075 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-20 13:56:48,075 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-20 13:56:48,075 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-20 13:56:48,075 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-20 13:56:48,075 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-20 13:56:48,075 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-20 13:56:48,076 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-20 13:56:48,076 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-20 13:56:48,076 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-20 13:56:48,076 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-20 13:56:48,076 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-20 13:56:48,076 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-20 13:56:48,077 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-20 13:56:48,077 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 13:56:48,077 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-20 13:56:48,077 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-20 13:56:48,077 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 13:56:48,077 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-20 13:56:48,077 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-20 13:56:48,077 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-20 13:56:48,078 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-20 13:56:48,078 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-20 13:56:48,078 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-20 13:56:48,078 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-20 13:56:48,078 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-20 13:56:48,078 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-20 13:56:48,078 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-20 13:56:48,079 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-20 13:56:48,079 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-20 13:56:48,079 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-20 13:56:48,079 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-20 13:56:48,079 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-20 13:56:48,079 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-20 13:56:48,079 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-20 13:56:48,080 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-20 13:56:48,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-20 13:56:48,080 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-20 13:56:48,080 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-20 13:56:48,080 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-20 13:56:48,080 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-20 13:56:48,080 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-20 13:56:48,080 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-20 13:56:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-20 13:56:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-20 13:56:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-20 13:56:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-20 13:56:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-20 13:56:48,081 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-20 13:56:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-20 13:56:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-20 13:56:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-20 13:56:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-20 13:56:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-20 13:56:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-20 13:56:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-20 13:56:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:56:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 13:56:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 13:56:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2020-07-20 13:56:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-20 13:56:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2020-07-20 13:56:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2020-07-20 13:56:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-20 13:56:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2020-07-20 13:56:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2020-07-20 13:56:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2020-07-20 13:56:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-20 13:56:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2020-07-20 13:56:48,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2020-07-20 13:56:48,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2020-07-20 13:56:48,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2020-07-20 13:56:48,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2020-07-20 13:56:48,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2020-07-20 13:56:48,085 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2020-07-20 13:56:48,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2020-07-20 13:56:48,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:56:48,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2020-07-20 13:56:48,086 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2020-07-20 13:56:48,086 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2020-07-20 13:56:48,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2020-07-20 13:56:48,086 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-07-20 13:56:48,087 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:56:48,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:56:48,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 13:56:48,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-20 13:56:48,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:56:48,701 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:56:48,701 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-20 13:56:48,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:56:48 BoogieIcfgContainer [2020-07-20 13:56:48,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:56:48,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:56:48,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:56:48,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:56:48,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:56:47" (1/3) ... [2020-07-20 13:56:48,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4776c5c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:56:48, skipping insertion in model container [2020-07-20 13:56:48,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:56:47" (2/3) ... [2020-07-20 13:56:48,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4776c5c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:56:48, skipping insertion in model container [2020-07-20 13:56:48,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:56:48" (3/3) ... [2020-07-20 13:56:48,715 INFO L109 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2020-07-20 13:56:48,725 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:56:48,732 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-20 13:56:48,746 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-20 13:56:48,767 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:56:48,768 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:56:48,768 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:56:48,768 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:56:48,769 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:56:48,769 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:56:48,769 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:56:48,769 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:56:48,791 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2020-07-20 13:56:48,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-20 13:56:48,798 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:56:48,799 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] [2020-07-20 13:56:48,799 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:56:48,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:56:48,806 INFO L82 PathProgramCache]: Analyzing trace with hash -326397870, now seen corresponding path program 1 times [2020-07-20 13:56:48,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:56:48,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133049490] [2020-07-20 13:56:48,815 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 [2020-07-20 13:56:49,090 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:56:49,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:56:49,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 13:56:49,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:56:49,142 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-20 13:56:49,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:56:49,144 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133049490] [2020-07-20 13:56:49,144 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:56:49,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 13:56:49,145 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965458733] [2020-07-20 13:56:49,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 13:56:49,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:56:49,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 13:56:49,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:56:49,167 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 2 states. [2020-07-20 13:56:49,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:56:49,233 INFO L93 Difference]: Finished difference Result 204 states and 249 transitions. [2020-07-20 13:56:49,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 13:56:49,235 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 42 [2020-07-20 13:56:49,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:56:49,250 INFO L225 Difference]: With dead ends: 204 [2020-07-20 13:56:49,250 INFO L226 Difference]: Without dead ends: 98 [2020-07-20 13:56:49,258 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 [2020-07-20 13:56:49,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-07-20 13:56:49,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-07-20 13:56:49,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-07-20 13:56:49,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2020-07-20 13:56:49,315 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 42 [2020-07-20 13:56:49,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:56:49,316 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2020-07-20 13:56:49,316 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 13:56:49,316 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2020-07-20 13:56:49,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-20 13:56:49,318 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:56:49,318 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] [2020-07-20 13:56:49,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:56:49,535 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:56:49,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:56:49,536 INFO L82 PathProgramCache]: Analyzing trace with hash -934339182, now seen corresponding path program 1 times [2020-07-20 13:56:49,536 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:56:49,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4126106] [2020-07-20 13:56:49,537 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 [2020-07-20 13:56:49,682 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:56:49,682 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:56:49,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 13:56:49,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:56:49,723 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-20 13:56:49,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:56:49,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4126106] [2020-07-20 13:56:49,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:56:49,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 13:56:49,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911871144] [2020-07-20 13:56:49,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 13:56:49,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:56:49,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 13:56:49,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 13:56:49,728 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand 4 states. [2020-07-20 13:56:49,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:56:49,755 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2020-07-20 13:56:49,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 13:56:49,755 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-07-20 13:56:49,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:56:49,759 INFO L225 Difference]: With dead ends: 104 [2020-07-20 13:56:49,760 INFO L226 Difference]: Without dead ends: 102 [2020-07-20 13:56:49,761 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 [2020-07-20 13:56:49,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-07-20 13:56:49,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-07-20 13:56:49,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-07-20 13:56:49,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 114 transitions. [2020-07-20 13:56:49,779 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 114 transitions. Word has length 42 [2020-07-20 13:56:49,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:56:49,779 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 114 transitions. [2020-07-20 13:56:49,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 13:56:49,780 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 114 transitions. [2020-07-20 13:56:49,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-20 13:56:49,781 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:56:49,781 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] [2020-07-20 13:56:49,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:56:49,997 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:56:49,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:56:49,998 INFO L82 PathProgramCache]: Analyzing trace with hash 640264123, now seen corresponding path program 1 times [2020-07-20 13:56:49,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:56:49,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634809362] [2020-07-20 13:56:49,999 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 [2020-07-20 13:56:50,197 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:56:50,197 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:56:50,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 39 conjunts are in the unsatisfiable core [2020-07-20 13:56:50,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:56:50,318 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 13:56:50,350 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-20 13:56:50,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:56:50,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634809362] [2020-07-20 13:56:50,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:56:50,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 13:56:50,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965198074] [2020-07-20 13:56:50,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 13:56:50,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:56:50,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 13:56:50,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 13:56:50,352 INFO L87 Difference]: Start difference. First operand 102 states and 114 transitions. Second operand 5 states. [2020-07-20 13:56:50,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:56:50,722 INFO L93 Difference]: Finished difference Result 267 states and 315 transitions. [2020-07-20 13:56:50,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 13:56:50,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-07-20 13:56:50,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:56:50,726 INFO L225 Difference]: With dead ends: 267 [2020-07-20 13:56:50,726 INFO L226 Difference]: Without dead ends: 179 [2020-07-20 13:56:50,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-07-20 13:56:50,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-07-20 13:56:50,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 152. [2020-07-20 13:56:50,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-07-20 13:56:50,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 180 transitions. [2020-07-20 13:56:50,751 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 180 transitions. Word has length 42 [2020-07-20 13:56:50,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:56:50,751 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 180 transitions. [2020-07-20 13:56:50,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 13:56:50,752 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 180 transitions. [2020-07-20 13:56:50,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-07-20 13:56:50,755 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:56:50,755 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] [2020-07-20 13:56:50,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:56:50,969 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:56:50,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:56:50,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1149911364, now seen corresponding path program 1 times [2020-07-20 13:56:50,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:56:50,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659649476] [2020-07-20 13:56:50,970 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 [2020-07-20 13:56:51,144 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:56:51,145 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:56:51,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 13:56:51,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:56:51,189 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-07-20 13:56:51,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:56:51,190 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659649476] [2020-07-20 13:56:51,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:56:51,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 13:56:51,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923870422] [2020-07-20 13:56:51,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 13:56:51,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:56:51,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 13:56:51,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 13:56:51,192 INFO L87 Difference]: Start difference. First operand 152 states and 180 transitions. Second operand 4 states. [2020-07-20 13:56:51,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:56:51,218 INFO L93 Difference]: Finished difference Result 272 states and 324 transitions. [2020-07-20 13:56:51,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 13:56:51,219 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-07-20 13:56:51,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:56:51,221 INFO L225 Difference]: With dead ends: 272 [2020-07-20 13:56:51,221 INFO L226 Difference]: Without dead ends: 158 [2020-07-20 13:56:51,223 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 [2020-07-20 13:56:51,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-07-20 13:56:51,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-07-20 13:56:51,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-07-20 13:56:51,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 186 transitions. [2020-07-20 13:56:51,241 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 186 transitions. Word has length 90 [2020-07-20 13:56:51,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:56:51,241 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 186 transitions. [2020-07-20 13:56:51,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 13:56:51,241 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 186 transitions. [2020-07-20 13:56:51,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-07-20 13:56:51,243 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:56:51,244 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] [2020-07-20 13:56:51,457 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:56:51,458 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:56:51,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:56:51,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1610969230, now seen corresponding path program 1 times [2020-07-20 13:56:51,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:56:51,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1520985764] [2020-07-20 13:56:51,459 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 [2020-07-20 13:56:51,593 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-20 13:56:51,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:56:51,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 55 conjunts are in the unsatisfiable core [2020-07-20 13:56:51,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:56:51,644 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 9 treesize of output 3 [2020-07-20 13:56:51,644 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:51,648 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:51,648 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:51,648 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:3 [2020-07-20 13:56:51,712 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 [2020-07-20 13:56:51,712 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:51,722 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:51,726 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 [2020-07-20 13:56:51,727 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:51,733 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:51,733 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:51,734 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:24, output treesize:10 [2020-07-20 13:56:51,831 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 13:56:51,862 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 38 proven. 2 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-07-20 13:56:51,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 13:56:52,476 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 13:56:52,484 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 [2020-07-20 13:56:52,484 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:52,490 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:52,493 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 [2020-07-20 13:56:52,494 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:52,498 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:52,498 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:52,499 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:33, output treesize:17 [2020-07-20 13:56:52,649 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 13:56:52,711 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 13:56:52,727 WARN L234 Elim1Store]: Array PQE input equivalent to true [2020-07-20 13:56:52,727 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:52,736 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 [2020-07-20 13:56:52,736 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 13:56:52,738 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 13:56:52,738 INFO L512 ElimStorePlain]: Eliminatee |#memory_$Pointer$.offset| vanished before elimination [2020-07-20 13:56:52,738 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 13:56:52,738 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:65, output treesize:1 [2020-07-20 13:56:52,813 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-07-20 13:56:52,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1520985764] [2020-07-20 13:56:52,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 13:56:52,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 19 [2020-07-20 13:56:52,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640268092] [2020-07-20 13:56:52,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-07-20 13:56:52,817 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:56:52,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-07-20 13:56:52,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-07-20 13:56:52,819 INFO L87 Difference]: Start difference. First operand 158 states and 186 transitions. Second operand 19 states. [2020-07-20 13:56:54,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:56:54,966 INFO L93 Difference]: Finished difference Result 405 states and 487 transitions. [2020-07-20 13:56:54,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-07-20 13:56:54,969 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 90 [2020-07-20 13:56:54,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:56:54,972 INFO L225 Difference]: With dead ends: 405 [2020-07-20 13:56:54,973 INFO L226 Difference]: Without dead ends: 221 [2020-07-20 13:56:54,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 177 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=420, Invalid=1472, Unknown=0, NotChecked=0, Total=1892 [2020-07-20 13:56:54,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-07-20 13:56:54,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 184. [2020-07-20 13:56:54,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-07-20 13:56:54,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 215 transitions. [2020-07-20 13:56:54,997 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 215 transitions. Word has length 90 [2020-07-20 13:56:54,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:56:54,998 INFO L479 AbstractCegarLoop]: Abstraction has 184 states and 215 transitions. [2020-07-20 13:56:54,998 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-07-20 13:56:54,998 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 215 transitions. [2020-07-20 13:56:54,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-07-20 13:56:55,000 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:56:55,000 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] [2020-07-20 13:56:55,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:56:55,214 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:56:55,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:56:55,215 INFO L82 PathProgramCache]: Analyzing trace with hash 1106436747, now seen corresponding path program 1 times [2020-07-20 13:56:55,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:56:55,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076723061] [2020-07-20 13:56:55,217 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) 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 [2020-07-20 13:56:55,463 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:56:55,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 13:56:55,464 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:56:55,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 13:56:55,503 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:56:55,614 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 13:56:55,614 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 13:56:55,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:56:55,876 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 7 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2020-07-20 13:56:55,877 WARN L1295 BoogieBacktranslator]: Unfinished Backtranslation: IntegerLiteral 5 could not be translated for associated CType STRUCT~~ldv_list_head?next~*ldv_list_head?prev~*ldv_list_head# [2020-07-20 13:56:55,924 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:56:55 BoogieIcfgContainer [2020-07-20 13:56:55,925 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:56:55,928 INFO L168 Benchmark]: Toolchain (without parser) took 8660.58 ms. Allocated memory was 138.4 MB in the beginning and 323.0 MB in the end (delta: 184.5 MB). Free memory was 101.9 MB in the beginning and 123.2 MB in the end (delta: -21.3 MB). Peak memory consumption was 163.2 MB. Max. memory is 7.1 GB. [2020-07-20 13:56:55,929 INFO L168 Benchmark]: CDTParser took 0.41 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-20 13:56:55,929 INFO L168 Benchmark]: CACSL2BoogieTranslator took 658.80 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 101.6 MB in the beginning and 164.8 MB in the end (delta: -63.1 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-07-20 13:56:55,930 INFO L168 Benchmark]: Boogie Preprocessor took 77.98 ms. Allocated memory is still 203.9 MB. Free memory was 164.8 MB in the beginning and 161.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. [2020-07-20 13:56:55,931 INFO L168 Benchmark]: RCFGBuilder took 699.44 ms. Allocated memory is still 203.9 MB. Free memory was 161.2 MB in the beginning and 100.4 MB in the end (delta: 60.8 MB). Peak memory consumption was 60.8 MB. Max. memory is 7.1 GB. [2020-07-20 13:56:55,932 INFO L168 Benchmark]: TraceAbstraction took 7217.45 ms. Allocated memory was 203.9 MB in the beginning and 323.0 MB in the end (delta: 119.0 MB). Free memory was 99.7 MB in the beginning and 123.2 MB in the end (delta: -23.5 MB). Peak memory consumption was 95.6 MB. Max. memory is 7.1 GB. [2020-07-20 13:56:55,935 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 658.80 ms. Allocated memory was 138.4 MB in the beginning and 203.9 MB in the end (delta: 65.5 MB). Free memory was 101.6 MB in the beginning and 164.8 MB in the end (delta: -63.1 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.98 ms. Allocated memory is still 203.9 MB. Free memory was 164.8 MB in the beginning and 161.2 MB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 699.44 ms. Allocated memory is still 203.9 MB. Free memory was 161.2 MB in the beginning and 100.4 MB in the end (delta: 60.8 MB). Peak memory consumption was 60.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7217.45 ms. Allocated memory was 203.9 MB in the beginning and 323.0 MB in the end (delta: 119.0 MB). Free memory was 99.7 MB in the beginning and 123.2 MB in the end (delta: -23.5 MB). Peak memory consumption was 95.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: IntegerLiteral 7 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 5 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={22886:0}] [L681] CALL foo() VAL [mutexes={22886:0}] [L670] FCALL ldv_initialize() VAL [mutexes={22886:0}] [L671] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [\old(size)=8, mutexes={22886:0}] [L565] void *ptr = malloc(size); VAL [\old(size)=8, malloc(size)={-1:0}, mutexes={22886:0}, ptr={-1:0}, size=8] [L566] CALL assume_abort_if_not(ptr!=0) VAL [\old(cond)=1, mutexes={22886:0}] [L554] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, mutexes={22886:0}] [L566] RET assume_abort_if_not(ptr!=0) VAL [\old(size)=8, malloc(size)={-1:0}, mutexes={22886:0}, ptr={-1:0}, size=8] [L567] return ptr; VAL [\old(size)=8, \result={-1:0}, malloc(size)={-1:0}, mutexes={22886:0}, ptr={-1:0}, size=8] [L671] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [ldv_successful_malloc(sizeof(struct mutex))={-1:0}, mutexes={22886:0}] [L671] struct mutex *m1 = ldv_successful_malloc(sizeof(struct mutex)); [L672] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [\old(size)=8, mutexes={22886:0}] [L565] void *ptr = malloc(size); VAL [\old(size)=8, malloc(size)={20254:0}, mutexes={22886:0}, ptr={20254:0}, size=8] [L566] CALL assume_abort_if_not(ptr!=0) VAL [\old(cond)=1, mutexes={22886:0}] [L554] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, mutexes={22886:0}] [L566] RET assume_abort_if_not(ptr!=0) VAL [\old(size)=8, malloc(size)={20254:0}, mutexes={22886:0}, ptr={20254:0}, size=8] [L567] return ptr; VAL [\old(size)=8, \result={20254:0}, malloc(size)={20254:0}, mutexes={22886:0}, ptr={20254:0}, size=8] [L672] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [ldv_successful_malloc(sizeof(struct mutex))={20254:0}, m1={-1:0}, mutexes={22886:0}] [L672] struct mutex *m2 = ldv_successful_malloc(sizeof(struct mutex)); [L673] CALL mutex_lock(m1) VAL [m={-1:0}, mutexes={22886:0}] [L658] CALL ldv_is_in_set(m, &mutexes) VAL [e={-1:0}, mutexes={22886:0}, s={22886:0}] [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={22886:0}, e={-1:0}, e={-1:0}, m={22886:-4}, mutexes={22886:0}, s={22886:0}, s={22886:0}] [L644] COND FALSE !(&m->list != (s)) VAL [__mptr={22886:0}, e={-1:0}, e={-1:0}, m={22886:-4}, mutexes={22886:0}, s={22886:0}, s={22886:0}] [L649] return 0; VAL [\result=0, __mptr={22886:0}, e={-1:0}, e={-1:0}, m={22886:-4}, mutexes={22886:0}, s={22886:0}, s={22886:0}] [L658] RET ldv_is_in_set(m, &mutexes) VAL [ldv_is_in_set(m, &mutexes)=0, m={-1:0}, m={-1:0}, mutexes={22886:0}] [L658] COND FALSE !(ldv_is_in_set(m, &mutexes)) [L659] CALL ldv_set_add(m, &mutexes) VAL [mutexes={22886:0}, new={-1:0}, s={22886:0}] [L625] CALL, EXPR ldv_is_in_set(new, s) VAL [e={-1:0}, mutexes={22886:0}, s={22886:0}] [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={22886:0}, e={-1:0}, e={-1:0}, m={22886:-4}, mutexes={22886:0}, s={22886:0}, s={22886:0}] [L644] COND FALSE !(&m->list != (s)) VAL [__mptr={22886:0}, e={-1:0}, e={-1:0}, m={22886:-4}, mutexes={22886:0}, s={22886:0}, s={22886:0}] [L649] return 0; VAL [\result=0, __mptr={22886:0}, e={-1:0}, e={-1:0}, m={22886:-4}, mutexes={22886:0}, s={22886:0}, s={22886:0}] [L625] RET, EXPR ldv_is_in_set(new, s) VAL [ldv_is_in_set(new, s)=0, mutexes={22886:0}, new={-1:0}, new={-1:0}, s={22886:0}, s={22886:0}] [L625] COND TRUE !ldv_is_in_set(new, s) [L626] struct ldv_list_element *le; VAL [mutexes={22886:0}, new={-1:0}, new={-1:0}, s={22886:0}, s={22886:0}] [L627] CALL, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [\old(size)=12, mutexes={22886:0}] [L565] void *ptr = malloc(size); VAL [\old(size)=12, malloc(size)={20253:0}, mutexes={22886:0}, ptr={20253:0}, size=12] [L566] CALL assume_abort_if_not(ptr!=0) VAL [\old(cond)=1, mutexes={22886:0}] [L554] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, mutexes={22886:0}] [L566] RET assume_abort_if_not(ptr!=0) VAL [\old(size)=12, malloc(size)={20253:0}, mutexes={22886:0}, ptr={20253:0}, size=12] [L567] return ptr; VAL [\old(size)=12, \result={20253:0}, malloc(size)={20253:0}, mutexes={22886:0}, ptr={20253:0}, size=12] [L627] RET, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [ldv_successful_malloc(sizeof(struct ldv_list_element))={20253:0}, mutexes={22886:0}, new={-1:0}, new={-1:0}, s={22886:0}, s={22886:0}] [L627] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L628] le->e = new VAL [le={20253:0}, mutexes={22886:0}, new={-1:0}, new={-1:0}, s={22886:0}, s={22886:0}] [L629] CALL ldv_list_add(&le->list, s) VAL [head={22886:0}, mutexes={22886:0}, new={20253:4}] [L597] EXPR head->next VAL [head={22886:0}, head={22886:0}, head->next={22886:0}, mutexes={22886:0}, new={20253:4}, new={20253:4}] [L597] CALL __ldv_list_add(new, head, head->next) VAL [mutexes={22886:0}, new={20253:4}, next={22886:0}, prev={22886:0}] [L585] next->prev = new [L586] new->next = next [L587] new->prev = prev [L588] prev->next = new VAL [mutexes={22886:0}, new={20253:4}, new={20253:4}, next={22886:0}, next={22886:0}, prev={22886:0}, prev={22886:0}] [L597] RET __ldv_list_add(new, head, head->next) VAL [head={22886:0}, head={22886:0}, head->next={22886:0}, mutexes={22886:0}, new={20253:4}, new={20253:4}] [L629] RET ldv_list_add(&le->list, s) VAL [le={20253:0}, mutexes={22886:0}, new={-1:0}, new={-1:0}, s={22886:0}, s={22886:0}] [L659] RET ldv_set_add(m, &mutexes) VAL [m={-1:0}, m={-1:0}, mutexes={22886:0}] [L673] RET mutex_lock(m1) VAL [m1={-1:0}, m2={20254:0}, mutexes={22886:0}] [L674] CALL mutex_lock(m1) VAL [m={-1:0}, mutexes={22886:0}] [L658] CALL ldv_is_in_set(m, &mutexes) VAL [e={-1:0}, mutexes={22886:0}, s={22886:0}] [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={20253:4}, e={-1:0}, e={-1:0}, m={20253:0}, mutexes={22886:0}, s={22886:0}, s={22886:0}] [L644] COND TRUE &m->list != (s) [L645] EXPR m->e VAL [__mptr={20253:4}, e={-1:0}, e={-1:0}, m={20253:0}, m->e={-1:0}, mutexes={22886:0}, s={22886:0}, s={22886:0}] [L645] COND TRUE m->e == e [L646] return 1; VAL [\result=1, __mptr={20253:4}, e={-1:0}, e={-1:0}, m={20253:0}, mutexes={22886:0}, s={22886:0}, s={22886:0}] [L658] RET ldv_is_in_set(m, &mutexes) VAL [ldv_is_in_set(m, &mutexes)=1, m={-1:0}, m={-1:0}, mutexes={22886:0}] [L658] COND TRUE ldv_is_in_set(m, &mutexes) [L658] __VERIFIER_error() VAL [m={-1:0}, m={-1:0}, mutexes={22886:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 25 procedures, 129 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.0s, OverallIterations: 6, TraceHistogramMax: 5, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 579 SDtfs, 692 SDslu, 837 SDs, 0 SdLazy, 974 SolverSat, 342 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 433 GetRequests, 382 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=184occurred 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, 64 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 392 NumberOfCodeBlocks, 307 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 390 ConstructedInterpolants, 0 QuantifiedInterpolants, 158825 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1303 ConjunctsInSsa, 105 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 194/231 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...