/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 01:02:42,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 01:02:42,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 01:02:42,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 01:02:42,989 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 01:02:42,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 01:02:42,991 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 01:02:42,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 01:02:42,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 01:02:42,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 01:02:42,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 01:02:42,994 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 01:02:42,995 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 01:02:42,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 01:02:42,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 01:02:42,997 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 01:02:42,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 01:02:43,004 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 01:02:43,004 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 01:02:43,005 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 01:02:43,006 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 [2023-04-02 01:02:43,023 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 01:02:43,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 01:02:43,023 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 01:02:43,023 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 01:02:43,024 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 01:02:43,024 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 01:02:43,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 01:02:43,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 01:02:43,025 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 01:02:43,025 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 01:02:43,025 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 01:02:43,025 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 01:02:43,025 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 01:02:43,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 01:02:43,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 01:02:43,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 01:02:43,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 01:02:43,026 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 01:02:43,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 01:02:43,026 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 01:02:43,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 01:02:43,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 01:02:43,027 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 01:02:43,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 01:02:43,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:02:43,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 01:02:43,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 01:02:43,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 01:02:43,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 01:02:43,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 01:02:43,028 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 01:02:43,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 01:02:43,028 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 01:02:43,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 01:02:43,028 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 01:02:43,028 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 01:02:43,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 01:02:43,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 01:02:43,187 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 01:02:43,187 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 01:02:43,188 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 01:02:43,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i [2023-04-02 01:02:44,385 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 01:02:44,749 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 01:02:44,750 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i [2023-04-02 01:02:44,762 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83d0abb44/b288430d638b48cb80fea28cfc0bc135/FLAG9a91de8d1 [2023-04-02 01:02:44,771 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/83d0abb44/b288430d638b48cb80fea28cfc0bc135 [2023-04-02 01:02:44,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 01:02:44,773 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 01:02:44,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 01:02:44,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 01:02:44,792 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 01:02:44,793 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:02:44" (1/1) ... [2023-04-02 01:02:44,794 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8a8a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:44, skipping insertion in model container [2023-04-02 01:02:44,794 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:02:44" (1/1) ... [2023-04-02 01:02:44,798 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 01:02:44,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 01:02:44,996 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26271,26284] [2023-04-02 01:02:44,998 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26396,26409] [2023-04-02 01:02:44,999 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26511,26524] [2023-04-02 01:02:45,020 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:02:45,027 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 01:02:45,055 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26271,26284] [2023-04-02 01:02:45,055 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26396,26409] [2023-04-02 01:02:45,056 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-1.i[26511,26524] [2023-04-02 01:02:45,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:02:45,080 INFO L208 MainTranslator]: Completed translation [2023-04-02 01:02:45,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:45 WrapperNode [2023-04-02 01:02:45,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 01:02:45,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 01:02:45,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 01:02:45,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 01:02:45,088 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:45" (1/1) ... [2023-04-02 01:02:45,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:45" (1/1) ... [2023-04-02 01:02:45,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:45" (1/1) ... [2023-04-02 01:02:45,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:45" (1/1) ... [2023-04-02 01:02:45,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:45" (1/1) ... [2023-04-02 01:02:45,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:45" (1/1) ... [2023-04-02 01:02:45,118 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:45" (1/1) ... [2023-04-02 01:02:45,119 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:45" (1/1) ... [2023-04-02 01:02:45,123 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 01:02:45,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 01:02:45,124 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 01:02:45,124 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 01:02:45,124 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:45" (1/1) ... [2023-04-02 01:02:45,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:02:45,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:02:45,154 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-04-02 01:02:45,169 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-04-02 01:02:45,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 01:02:45,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 01:02:45,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2023-04-02 01:02:45,198 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2023-04-02 01:02:45,199 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 01:02:45,199 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 01:02:45,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-02 01:02:45,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2023-04-02 01:02:45,199 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-04-02 01:02:45,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-04-02 01:02:45,200 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2023-04-02 01:02:45,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2023-04-02 01:02:45,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2023-04-02 01:02:45,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2023-04-02 01:02:45,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2023-04-02 01:02:45,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2023-04-02 01:02:45,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2023-04-02 01:02:45,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2023-04-02 01:02:45,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-04-02 01:02:45,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2023-04-02 01:02:45,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-02 01:02:45,201 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-04-02 01:02:45,201 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-04-02 01:02:45,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-02 01:02:45,201 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2023-04-02 01:02:45,201 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 01:02:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2023-04-02 01:02:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2023-04-02 01:02:45,201 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-04-02 01:02:45,202 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-04-02 01:02:45,202 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-04-02 01:02:45,202 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-04-02 01:02:45,202 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-04-02 01:02:45,202 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-04-02 01:02:45,202 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-04-02 01:02:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-04-02 01:02:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-04-02 01:02:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-04-02 01:02:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-04-02 01:02:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-04-02 01:02:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-04-02 01:02:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-04-02 01:02:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-04-02 01:02:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-04-02 01:02:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-04-02 01:02:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-04-02 01:02:45,203 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-04-02 01:02:45,204 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-04-02 01:02:45,204 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-04-02 01:02:45,204 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-04-02 01:02:45,204 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-04-02 01:02:45,205 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-04-02 01:02:45,205 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-04-02 01:02:45,205 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-04-02 01:02:45,205 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-04-02 01:02:45,205 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-04-02 01:02:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-04-02 01:02:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-04-02 01:02:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-04-02 01:02:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-04-02 01:02:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-04-02 01:02:45,206 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-04-02 01:02:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-04-02 01:02:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-04-02 01:02:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-04-02 01:02:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-04-02 01:02:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-04-02 01:02:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-04-02 01:02:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-04-02 01:02:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-04-02 01:02:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-04-02 01:02:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-04-02 01:02:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-04-02 01:02:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-04-02 01:02:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-04-02 01:02:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-04-02 01:02:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-04-02 01:02:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-04-02 01:02:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 01:02:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-02 01:02:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-04-02 01:02:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 01:02:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-04-02 01:02:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-04-02 01:02:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-04-02 01:02:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-04-02 01:02:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-04-02 01:02:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 01:02:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-04-02 01:02:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-04-02 01:02:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-04-02 01:02:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 01:02:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-04-02 01:02:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-04-02 01:02:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-04-02 01:02:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-04-02 01:02:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-04-02 01:02:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-04-02 01:02:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-04-02 01:02:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-04-02 01:02:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-04-02 01:02:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-04-02 01:02:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-04-02 01:02:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-04-02 01:02:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-04-02 01:02:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-04-02 01:02:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-04-02 01:02:45,210 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-04-02 01:02:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-04-02 01:02:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-04-02 01:02:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-04-02 01:02:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-04-02 01:02:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-04-02 01:02:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-04-02 01:02:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-04-02 01:02:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-04-02 01:02:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-04-02 01:02:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-04-02 01:02:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-04-02 01:02:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-04-02 01:02:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-04-02 01:02:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-04-02 01:02:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-04-02 01:02:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-04-02 01:02:45,213 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-04-02 01:02:45,215 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-04-02 01:02:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-04-02 01:02:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-04-02 01:02:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-04-02 01:02:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-04-02 01:02:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-04-02 01:02:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 01:02:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 01:02:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 01:02:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 01:02:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 01:02:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 01:02:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 01:02:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-02 01:02:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 01:02:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2023-04-02 01:02:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-04-02 01:02:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 01:02:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-04-02 01:02:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2023-04-02 01:02:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2023-04-02 01:02:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 01:02:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2023-04-02 01:02:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2023-04-02 01:02:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2023-04-02 01:02:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2023-04-02 01:02:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2023-04-02 01:02:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2023-04-02 01:02:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-04-02 01:02:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2023-04-02 01:02:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 01:02:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-02 01:02:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-04-02 01:02:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-04-02 01:02:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-02 01:02:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2023-04-02 01:02:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 01:02:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 01:02:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 01:02:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-02 01:02:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 01:02:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 01:02:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 01:02:45,473 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 01:02:45,475 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 01:02:45,692 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 01:02:45,697 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 01:02:45,697 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-02 01:02:45,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:02:45 BoogieIcfgContainer [2023-04-02 01:02:45,699 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 01:02:45,700 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 01:02:45,701 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 01:02:45,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 01:02:45,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 01:02:44" (1/3) ... [2023-04-02 01:02:45,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c95c58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:02:45, skipping insertion in model container [2023-04-02 01:02:45,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:45" (2/3) ... [2023-04-02 01:02:45,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c95c58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:02:45, skipping insertion in model container [2023-04-02 01:02:45,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:02:45" (3/3) ... [2023-04-02 01:02:45,705 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded-1.i [2023-04-02 01:02:45,719 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 01:02:45,719 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-04-02 01:02:45,770 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 01:02:45,776 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@b601830, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 01:02:45,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-04-02 01:02:45,780 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 71 states have (on average 1.2816901408450705) internal successors, (91), 75 states have internal predecessors, (91), 22 states have call successors, (22), 18 states have call predecessors, (22), 18 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-04-02 01:02:45,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-02 01:02:45,789 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:02:45,790 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:02:45,790 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:02:45,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:02:45,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1983251251, now seen corresponding path program 1 times [2023-04-02 01:02:45,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:02:45,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855325917] [2023-04-02 01:02:45,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:02:45,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:02:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:46,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:02:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:46,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:02:46,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:46,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 01:02:46,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:46,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:02:46,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:02:46,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855325917] [2023-04-02 01:02:46,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855325917] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:02:46,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:02:46,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 01:02:46,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871652089] [2023-04-02 01:02:46,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:02:46,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 01:02:46,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:02:46,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 01:02:46,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 01:02:46,112 INFO L87 Difference]: Start difference. First operand has 116 states, 71 states have (on average 1.2816901408450705) internal successors, (91), 75 states have internal predecessors, (91), 22 states have call successors, (22), 18 states have call predecessors, (22), 18 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 01:02:46,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:02:46,402 INFO L93 Difference]: Finished difference Result 216 states and 267 transitions. [2023-04-02 01:02:46,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 01:02:46,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2023-04-02 01:02:46,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:02:46,410 INFO L225 Difference]: With dead ends: 216 [2023-04-02 01:02:46,410 INFO L226 Difference]: Without dead ends: 104 [2023-04-02 01:02:46,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 01:02:46,415 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 97 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:02:46,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 10 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:02:46,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2023-04-02 01:02:46,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2023-04-02 01:02:46,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 64 states have (on average 1.15625) internal successors, (74), 67 states have internal predecessors, (74), 22 states have call successors, (22), 18 states have call predecessors, (22), 15 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2023-04-02 01:02:46,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 115 transitions. [2023-04-02 01:02:46,452 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 115 transitions. Word has length 24 [2023-04-02 01:02:46,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:02:46,453 INFO L495 AbstractCegarLoop]: Abstraction has 104 states and 115 transitions. [2023-04-02 01:02:46,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 01:02:46,453 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 115 transitions. [2023-04-02 01:02:46,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-02 01:02:46,454 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:02:46,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:02:46,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 01:02:46,455 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:02:46,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:02:46,455 INFO L85 PathProgramCache]: Analyzing trace with hash 2026613827, now seen corresponding path program 1 times [2023-04-02 01:02:46,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:02:46,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419884670] [2023-04-02 01:02:46,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:02:46,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:02:46,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:46,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:02:46,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:46,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:02:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:46,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 01:02:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:46,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:02:46,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:02:46,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419884670] [2023-04-02 01:02:46,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419884670] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:02:46,596 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:02:46,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 01:02:46,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637554791] [2023-04-02 01:02:46,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:02:46,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 01:02:46,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:02:46,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 01:02:46,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 01:02:46,599 INFO L87 Difference]: Start difference. First operand 104 states and 115 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 01:02:46,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:02:46,873 INFO L93 Difference]: Finished difference Result 110 states and 123 transitions. [2023-04-02 01:02:46,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 01:02:46,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 24 [2023-04-02 01:02:46,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:02:46,876 INFO L225 Difference]: With dead ends: 110 [2023-04-02 01:02:46,876 INFO L226 Difference]: Without dead ends: 108 [2023-04-02 01:02:46,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-04-02 01:02:46,877 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 95 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:02:46,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 17 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:02:46,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-04-02 01:02:46,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2023-04-02 01:02:46,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 70 states have internal predecessors, (77), 22 states have call successors, (22), 18 states have call predecessors, (22), 16 states have return successors, (22), 20 states have call predecessors, (22), 19 states have call successors, (22) [2023-04-02 01:02:46,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 121 transitions. [2023-04-02 01:02:46,931 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 121 transitions. Word has length 24 [2023-04-02 01:02:46,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:02:46,931 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 121 transitions. [2023-04-02 01:02:46,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-04-02 01:02:46,932 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 121 transitions. [2023-04-02 01:02:46,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-02 01:02:46,932 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:02:46,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 01:02:46,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 01:02:46,933 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:02:46,933 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:02:46,933 INFO L85 PathProgramCache]: Analyzing trace with hash -693750164, now seen corresponding path program 1 times [2023-04-02 01:02:46,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:02:46,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871842006] [2023-04-02 01:02:46,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:02:46,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:02:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:47,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:02:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:47,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:02:47,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:47,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 01:02:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:47,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:02:47,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:02:47,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871842006] [2023-04-02 01:02:47,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871842006] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:02:47,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:02:47,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 01:02:47,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054079595] [2023-04-02 01:02:47,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:02:47,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 01:02:47,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:02:47,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 01:02:47,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 01:02:47,199 INFO L87 Difference]: Start difference. First operand 108 states and 121 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 01:02:47,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:02:47,765 INFO L93 Difference]: Finished difference Result 297 states and 354 transitions. [2023-04-02 01:02:47,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-04-02 01:02:47,765 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2023-04-02 01:02:47,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:02:47,767 INFO L225 Difference]: With dead ends: 297 [2023-04-02 01:02:47,767 INFO L226 Difference]: Without dead ends: 205 [2023-04-02 01:02:47,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-04-02 01:02:47,769 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 251 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 01:02:47,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 11 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 01:02:47,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2023-04-02 01:02:47,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 154. [2023-04-02 01:02:47,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 100 states have (on average 1.2) internal successors, (120), 104 states have internal predecessors, (120), 29 states have call successors, (29), 23 states have call predecessors, (29), 22 states have return successors, (34), 27 states have call predecessors, (34), 26 states have call successors, (34) [2023-04-02 01:02:47,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 183 transitions. [2023-04-02 01:02:47,801 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 183 transitions. Word has length 24 [2023-04-02 01:02:47,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:02:47,802 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 183 transitions. [2023-04-02 01:02:47,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 01:02:47,802 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 183 transitions. [2023-04-02 01:02:47,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-04-02 01:02:47,803 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:02:47,803 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 01:02:47,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 01:02:47,803 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:02:47,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:02:47,803 INFO L85 PathProgramCache]: Analyzing trace with hash -544069825, now seen corresponding path program 1 times [2023-04-02 01:02:47,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:02:47,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620617962] [2023-04-02 01:02:47,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:02:47,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:02:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:47,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:02:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:47,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:02:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:47,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-04-02 01:02:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:47,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:02:47,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:02:47,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620617962] [2023-04-02 01:02:47,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620617962] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:02:47,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:02:47,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-04-02 01:02:47,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076380534] [2023-04-02 01:02:47,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:02:47,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 01:02:47,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:02:47,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 01:02:47,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 01:02:47,977 INFO L87 Difference]: Start difference. First operand 154 states and 183 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 01:02:48,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:02:48,416 INFO L93 Difference]: Finished difference Result 284 states and 331 transitions. [2023-04-02 01:02:48,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-04-02 01:02:48,416 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2023-04-02 01:02:48,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:02:48,418 INFO L225 Difference]: With dead ends: 284 [2023-04-02 01:02:48,418 INFO L226 Difference]: Without dead ends: 148 [2023-04-02 01:02:48,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-04-02 01:02:48,419 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 150 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-04-02 01:02:48,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 11 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-04-02 01:02:48,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-04-02 01:02:48,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 124. [2023-04-02 01:02:48,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 79 states have (on average 1.1518987341772151) internal successors, (91), 83 states have internal predecessors, (91), 24 states have call successors, (24), 20 states have call predecessors, (24), 18 states have return successors, (24), 21 states have call predecessors, (24), 21 states have call successors, (24) [2023-04-02 01:02:48,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 139 transitions. [2023-04-02 01:02:48,437 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 139 transitions. Word has length 26 [2023-04-02 01:02:48,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:02:48,437 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 139 transitions. [2023-04-02 01:02:48,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-04-02 01:02:48,437 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 139 transitions. [2023-04-02 01:02:48,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-04-02 01:02:48,438 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:02:48,438 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-04-02 01:02:48,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 01:02:48,438 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:02:48,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:02:48,438 INFO L85 PathProgramCache]: Analyzing trace with hash 262957389, now seen corresponding path program 1 times [2023-04-02 01:02:48,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:02:48,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672164894] [2023-04-02 01:02:48,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:02:48,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:02:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:48,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:02:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:48,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:02:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:48,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 01:02:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:48,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:48,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 01:02:48,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:02:48,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672164894] [2023-04-02 01:02:48,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672164894] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:02:48,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:02:48,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 01:02:48,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362172198] [2023-04-02 01:02:48,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:02:48,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 01:02:48,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:02:48,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 01:02:48,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 01:02:48,798 INFO L87 Difference]: Start difference. First operand 124 states and 139 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-02 01:02:49,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:02:49,432 INFO L93 Difference]: Finished difference Result 145 states and 161 transitions. [2023-04-02 01:02:49,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 01:02:49,433 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 28 [2023-04-02 01:02:49,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:02:49,434 INFO L225 Difference]: With dead ends: 145 [2023-04-02 01:02:49,434 INFO L226 Difference]: Without dead ends: 127 [2023-04-02 01:02:49,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-04-02 01:02:49,435 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 130 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 01:02:49,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 23 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 767 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 01:02:49,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2023-04-02 01:02:49,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 122. [2023-04-02 01:02:49,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 77 states have (on average 1.1428571428571428) internal successors, (88), 81 states have internal predecessors, (88), 24 states have call successors, (24), 20 states have call predecessors, (24), 18 states have return successors, (24), 21 states have call predecessors, (24), 21 states have call successors, (24) [2023-04-02 01:02:49,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 136 transitions. [2023-04-02 01:02:49,446 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 136 transitions. Word has length 28 [2023-04-02 01:02:49,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:02:49,447 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 136 transitions. [2023-04-02 01:02:49,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 7 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-04-02 01:02:49,447 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 136 transitions. [2023-04-02 01:02:49,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-04-02 01:02:49,447 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:02:49,448 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1] [2023-04-02 01:02:49,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 01:02:49,448 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:02:49,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:02:49,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2018633555, now seen corresponding path program 1 times [2023-04-02 01:02:49,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:02:49,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744863234] [2023-04-02 01:02:49,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:02:49,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:02:49,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:50,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:02:50,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:50,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:02:50,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:50,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-04-02 01:02:50,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:50,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:50,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:50,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 01:02:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:51,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:51,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat