/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-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 01:02:45,089 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 01:02:45,091 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 01:02:45,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-04-02 01:02:45,151 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 01:02:45,152 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 01:02:45,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 01:02:45,153 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 01:02:45,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 01:02:45,154 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 01:02:45,155 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 01:02:45,157 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 01:02:45,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 01:02:45,161 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 01:02:45,162 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 01:02:45,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 01:02:45,174 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-02 01:02:45,181 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 01:02:45,182 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 01:02:45,183 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 01:02:45,183 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 01:02:45,218 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 01:02:45,218 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 01:02:45,219 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 01:02:45,219 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 01:02:45,222 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 01:02:45,222 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 01:02:45,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 01:02:45,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 01:02:45,223 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 01:02:45,223 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 01:02:45,224 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 01:02:45,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 01:02:45,225 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 01:02:45,225 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 01:02:45,225 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 01:02:45,225 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 01:02:45,225 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 01:02:45,225 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 01:02:45,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 01:02:45,225 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 01:02:45,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 01:02:45,226 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 01:02:45,226 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 01:02:45,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 01:02:45,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:02:45,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 01:02:45,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 01:02:45,226 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 01:02:45,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 01:02:45,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 01:02:45,227 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 01:02:45,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 01:02:45,227 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 01:02:45,227 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 01:02:45,227 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 01:02:45,228 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 01:02:45,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 01:02:45,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 01:02:45,473 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 01:02:45,474 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 01:02:45,474 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 01:02:45,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i [2023-04-02 01:02:46,743 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 01:02:46,995 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 01:02:46,996 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_unbounded-2.i [2023-04-02 01:02:47,009 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0e48574c/1fafa58d5fa7478792eb1e1f03c32abb/FLAGcb6e4bd58 [2023-04-02 01:02:47,023 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0e48574c/1fafa58d5fa7478792eb1e1f03c32abb [2023-04-02 01:02:47,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 01:02:47,027 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 01:02:47,028 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 01:02:47,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 01:02:47,032 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 01:02:47,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:02:47" (1/1) ... [2023-04-02 01:02:47,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24fd5e5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:47, skipping insertion in model container [2023-04-02 01:02:47,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 01:02:47" (1/1) ... [2023-04-02 01:02:47,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 01:02:47,086 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 01:02:47,384 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-2.i[26271,26284] [2023-04-02 01:02:47,392 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-2.i[26396,26409] [2023-04-02 01:02:47,395 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-2.i[26511,26524] [2023-04-02 01:02:47,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:02:47,425 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 01:02:47,465 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-2.i[26271,26284] [2023-04-02 01:02:47,466 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-2.i[26396,26409] [2023-04-02 01:02:47,467 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-2.i[26511,26524] [2023-04-02 01:02:47,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 01:02:47,499 INFO L208 MainTranslator]: Completed translation [2023-04-02 01:02:47,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:47 WrapperNode [2023-04-02 01:02:47,500 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 01:02:47,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 01:02:47,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 01:02:47,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 01:02:47,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:47" (1/1) ... [2023-04-02 01:02:47,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:47" (1/1) ... [2023-04-02 01:02:47,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:47" (1/1) ... [2023-04-02 01:02:47,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:47" (1/1) ... [2023-04-02 01:02:47,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:47" (1/1) ... [2023-04-02 01:02:47,546 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:47" (1/1) ... [2023-04-02 01:02:47,549 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:47" (1/1) ... [2023-04-02 01:02:47,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:47" (1/1) ... [2023-04-02 01:02:47,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 01:02:47,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 01:02:47,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 01:02:47,559 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 01:02:47,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:47" (1/1) ... [2023-04-02 01:02:47,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 01:02:47,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 01:02:47,584 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 01:02:47,585 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 01:02:47,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 01:02:47,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 01:02:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2023-04-02 01:02:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2023-04-02 01:02:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 01:02:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 01:02:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-04-02 01:02:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2023-04-02 01:02:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-04-02 01:02:47,622 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-04-02 01:02:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2023-04-02 01:02:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2023-04-02 01:02:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2023-04-02 01:02:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2023-04-02 01:02:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2023-04-02 01:02:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2023-04-02 01:02:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2023-04-02 01:02:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2023-04-02 01:02:47,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-04-02 01:02:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2023-04-02 01:02:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-04-02 01:02:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-04-02 01:02:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-04-02 01:02:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-04-02 01:02:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2023-04-02 01:02:47,624 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 01:02:47,624 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2023-04-02 01:02:47,625 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2023-04-02 01:02:47,625 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-04-02 01:02:47,625 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-04-02 01:02:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-04-02 01:02:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-04-02 01:02:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-04-02 01:02:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-04-02 01:02:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-04-02 01:02:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-04-02 01:02:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-04-02 01:02:47,626 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-04-02 01:02:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-04-02 01:02:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-04-02 01:02:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-04-02 01:02:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-04-02 01:02:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-04-02 01:02:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-04-02 01:02:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-04-02 01:02:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-04-02 01:02:47,627 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-04-02 01:02:47,628 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-04-02 01:02:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-04-02 01:02:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-04-02 01:02:47,629 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-04-02 01:02:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-04-02 01:02:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-04-02 01:02:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-04-02 01:02:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-04-02 01:02:47,630 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-04-02 01:02:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-04-02 01:02:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-04-02 01:02:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-04-02 01:02:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-04-02 01:02:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-04-02 01:02:47,631 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-04-02 01:02:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-04-02 01:02:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-04-02 01:02:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-04-02 01:02:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-04-02 01:02:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-04-02 01:02:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-04-02 01:02:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-04-02 01:02:47,632 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-04-02 01:02:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-04-02 01:02:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-04-02 01:02:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-04-02 01:02:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-04-02 01:02:47,633 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-04-02 01:02:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-04-02 01:02:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-04-02 01:02:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-04-02 01:02:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-04-02 01:02:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-04-02 01:02:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-04-02 01:02:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-04-02 01:02:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-04-02 01:02:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-04-02 01:02:47,634 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-04-02 01:02:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-04-02 01:02:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2023-04-02 01:02:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 01:02:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-04-02 01:02:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2023-04-02 01:02:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-04-02 01:02:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-04-02 01:02:47,635 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2023-04-02 01:02:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-04-02 01:02:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-04-02 01:02:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-04-02 01:02:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-04-02 01:02:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-04-02 01:02:47,636 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-04-02 01:02:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-04-02 01:02:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-04-02 01:02:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-04-02 01:02:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-04-02 01:02:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-04-02 01:02:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-04-02 01:02:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-04-02 01:02:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-04-02 01:02:47,637 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-04-02 01:02:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-04-02 01:02:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-04-02 01:02:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-04-02 01:02:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-04-02 01:02:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-04-02 01:02:47,638 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-04-02 01:02:47,639 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-04-02 01:02:47,639 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-04-02 01:02:47,639 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-04-02 01:02:47,639 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-04-02 01:02:47,639 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-04-02 01:02:47,641 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-04-02 01:02:47,641 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-04-02 01:02:47,641 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-04-02 01:02:47,641 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-04-02 01:02:47,641 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-04-02 01:02:47,642 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-04-02 01:02:47,644 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-04-02 01:02:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-04-02 01:02:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-04-02 01:02:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-04-02 01:02:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-04-02 01:02:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-04-02 01:02:47,650 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 01:02:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-02 01:02:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-02 01:02:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 01:02:47,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 01:02:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 01:02:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-04-02 01:02:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-04-02 01:02:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-04-02 01:02:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2023-04-02 01:02:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-04-02 01:02:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-04-02 01:02:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-04-02 01:02:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2023-04-02 01:02:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2023-04-02 01:02:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-04-02 01:02:47,652 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2023-04-02 01:02:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2023-04-02 01:02:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2023-04-02 01:02:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2023-04-02 01:02:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2023-04-02 01:02:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2023-04-02 01:02:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-04-02 01:02:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2023-04-02 01:02:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 01:02:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-04-02 01:02:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-04-02 01:02:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-04-02 01:02:47,653 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-04-02 01:02:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2023-04-02 01:02:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 01:02:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 01:02:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 01:02:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-04-02 01:02:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 01:02:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 01:02:47,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 01:02:47,969 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 01:02:47,972 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 01:02:48,366 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 01:02:48,374 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 01:02:48,374 INFO L302 CfgBuilder]: Removed 5 assume(true) statements. [2023-04-02 01:02:48,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:02:48 BoogieIcfgContainer [2023-04-02 01:02:48,377 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 01:02:48,380 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 01:02:48,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 01:02:48,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 01:02:48,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 01:02:47" (1/3) ... [2023-04-02 01:02:48,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1745f35e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:02:48, skipping insertion in model container [2023-04-02 01:02:48,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 01:02:47" (2/3) ... [2023-04-02 01:02:48,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1745f35e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 01:02:48, skipping insertion in model container [2023-04-02 01:02:48,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 01:02:48" (3/3) ... [2023-04-02 01:02:48,386 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_unbounded-2.i [2023-04-02 01:02:48,402 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 01:02:48,402 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-04-02 01:02:48,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 01:02:48,470 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;@50cf1520, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 01:02:48,470 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-04-02 01:02:48,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 117 states, 71 states have (on average 1.2816901408450705) internal successors, (91), 75 states have internal predecessors, (91), 23 states have call successors, (23), 18 states have call predecessors, (23), 18 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2023-04-02 01:02:48,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-02 01:02:48,496 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:02:48,496 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 01:02:48,497 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 01:02:48,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:02:48,502 INFO L85 PathProgramCache]: Analyzing trace with hash -143211286, now seen corresponding path program 1 times [2023-04-02 01:02:48,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:02:48,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265287952] [2023-04-02 01:02:48,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:02:48,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:02:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:48,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:02:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:48,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:02:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:48,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 01:02:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:48,754 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 01:02:48,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:02:48,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265287952] [2023-04-02 01:02:48,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265287952] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:02:48,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:02:48,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-04-02 01:02:48,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840212726] [2023-04-02 01:02:48,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:02:48,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-04-02 01:02:48,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:02:48,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-04-02 01:02:48,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-04-02 01:02:48,790 INFO L87 Difference]: Start difference. First operand has 117 states, 71 states have (on average 1.2816901408450705) internal successors, (91), 75 states have internal predecessors, (91), 23 states have call successors, (23), 18 states have call predecessors, (23), 18 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) 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 01:02:49,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:02:49,116 INFO L93 Difference]: Finished difference Result 218 states and 271 transitions. [2023-04-02 01:02:49,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-04-02 01:02:49,118 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 01:02:49,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:02:49,126 INFO L225 Difference]: With dead ends: 218 [2023-04-02 01:02:49,127 INFO L226 Difference]: Without dead ends: 105 [2023-04-02 01:02:49,131 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 01:02:49,136 INFO L413 NwaCegarLoop]: 7 mSDtfsCounter, 98 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-04-02 01:02:49,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 10 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-04-02 01:02:49,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2023-04-02 01:02:49,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105. [2023-04-02 01:02:49,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 64 states have (on average 1.15625) internal successors, (74), 67 states have internal predecessors, (74), 23 states have call successors, (23), 18 states have call predecessors, (23), 15 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2023-04-02 01:02:49,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 117 transitions. [2023-04-02 01:02:49,200 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 117 transitions. Word has length 24 [2023-04-02 01:02:49,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:02:49,201 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 117 transitions. [2023-04-02 01:02:49,201 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 01:02:49,201 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 117 transitions. [2023-04-02 01:02:49,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-04-02 01:02:49,203 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:02:49,203 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 01:02:49,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 01:02:49,203 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 01:02:49,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:02:49,203 INFO L85 PathProgramCache]: Analyzing trace with hash -428313504, now seen corresponding path program 1 times [2023-04-02 01:02:49,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:02:49,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578811537] [2023-04-02 01:02:49,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:02:49,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:02:49,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:49,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:02:49,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:49,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:02:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:49,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-04-02 01:02:49,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:49,541 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 01:02:49,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:02:49,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578811537] [2023-04-02 01:02:49,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578811537] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:02:49,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:02:49,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 01:02:49,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421339228] [2023-04-02 01:02:49,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:02:49,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 01:02:49,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:02:49,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 01:02:49,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 01:02:49,544 INFO L87 Difference]: Start difference. First operand 105 states and 117 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 01:02:50,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:02:50,052 INFO L93 Difference]: Finished difference Result 228 states and 253 transitions. [2023-04-02 01:02:50,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 01:02:50,053 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), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 24 [2023-04-02 01:02:50,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:02:50,056 INFO L225 Difference]: With dead ends: 228 [2023-04-02 01:02:50,056 INFO L226 Difference]: Without dead ends: 139 [2023-04-02 01:02:50,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-04-02 01:02:50,058 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 137 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 01:02:50,058 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 9 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 01:02:50,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2023-04-02 01:02:50,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 120. [2023-04-02 01:02:50,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 75 states have (on average 1.1466666666666667) internal successors, (86), 79 states have internal predecessors, (86), 25 states have call successors, (25), 20 states have call predecessors, (25), 17 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-04-02 01:02:50,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 133 transitions. [2023-04-02 01:02:50,085 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 133 transitions. Word has length 24 [2023-04-02 01:02:50,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:02:50,085 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 133 transitions. [2023-04-02 01:02:50,085 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), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2023-04-02 01:02:50,086 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 133 transitions. [2023-04-02 01:02:50,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-04-02 01:02:50,086 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:02:50,086 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 01:02:50,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 01:02:50,087 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:02:50,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:02:50,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1654030887, now seen corresponding path program 1 times [2023-04-02 01:02:50,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:02:50,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588213008] [2023-04-02 01:02:50,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:02:50,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:02:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:50,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:02:50,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:50,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:02:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:50,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-04-02 01:02:50,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:50,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:50,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:50,548 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 01:02:50,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:02:50,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588213008] [2023-04-02 01:02:50,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588213008] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:02:50,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:02:50,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-04-02 01:02:50,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781610992] [2023-04-02 01:02:50,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:02:50,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-04-02 01:02:50,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:02:50,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-04-02 01:02:50,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-04-02 01:02:50,551 INFO L87 Difference]: Start difference. First operand 120 states and 133 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 01:02:51,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:02:51,467 INFO L93 Difference]: Finished difference Result 139 states and 153 transitions. [2023-04-02 01:02:51,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 01:02:51,468 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 01:02:51,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:02:51,469 INFO L225 Difference]: With dead ends: 139 [2023-04-02 01:02:51,469 INFO L226 Difference]: Without dead ends: 121 [2023-04-02 01:02:51,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-04-02 01:02:51,471 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 131 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-04-02 01:02:51,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 23 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-04-02 01:02:51,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-04-02 01:02:51,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 116. [2023-04-02 01:02:51,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 71 states have (on average 1.1408450704225352) internal successors, (81), 75 states have internal predecessors, (81), 25 states have call successors, (25), 20 states have call predecessors, (25), 17 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2023-04-02 01:02:51,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 128 transitions. [2023-04-02 01:02:51,498 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 128 transitions. Word has length 28 [2023-04-02 01:02:51,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:02:51,498 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 128 transitions. [2023-04-02 01:02:51,498 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 01:02:51,499 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 128 transitions. [2023-04-02 01:02:51,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-04-02 01:02:51,501 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:02:51,501 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 01:02:51,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 01:02:51,501 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:02:51,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:02:51,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1916443146, now seen corresponding path program 1 times [2023-04-02 01:02:51,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:02:51,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411583889] [2023-04-02 01:02:51,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:02:51,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:02:51,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:51,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:02:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:51,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:02:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:51,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-04-02 01:02:51,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:51,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:51,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:51,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 01:02:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:51,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:51,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-04-02 01:02:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:51,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-04-02 01:02:51,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 01:02:51,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411583889] [2023-04-02 01:02:51,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411583889] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 01:02:51,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 01:02:51,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 01:02:51,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022978735] [2023-04-02 01:02:51,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 01:02:51,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-04-02 01:02:51,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 01:02:51,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-04-02 01:02:51,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-04-02 01:02:51,763 INFO L87 Difference]: Start difference. First operand 116 states and 128 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-04-02 01:02:52,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 01:02:52,280 INFO L93 Difference]: Finished difference Result 137 states and 155 transitions. [2023-04-02 01:02:52,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-04-02 01:02:52,281 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 46 [2023-04-02 01:02:52,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 01:02:52,282 INFO L225 Difference]: With dead ends: 137 [2023-04-02 01:02:52,282 INFO L226 Difference]: Without dead ends: 135 [2023-04-02 01:02:52,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-04-02 01:02:52,284 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 213 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-04-02 01:02:52,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 7 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-04-02 01:02:52,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-04-02 01:02:52,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 120. [2023-04-02 01:02:52,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 74 states have (on average 1.135135135135135) internal successors, (84), 78 states have internal predecessors, (84), 25 states have call successors, (25), 20 states have call predecessors, (25), 18 states have return successors, (25), 22 states have call predecessors, (25), 22 states have call successors, (25) [2023-04-02 01:02:52,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 134 transitions. [2023-04-02 01:02:52,304 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 134 transitions. Word has length 46 [2023-04-02 01:02:52,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 01:02:52,304 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 134 transitions. [2023-04-02 01:02:52,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 4 states have internal predecessors, (29), 1 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-04-02 01:02:52,305 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 134 transitions. [2023-04-02 01:02:52,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-04-02 01:02:52,306 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 01:02:52,306 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 01:02:52,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 01:02:52,306 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 01:02:52,307 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 01:02:52,307 INFO L85 PathProgramCache]: Analyzing trace with hash -803920845, now seen corresponding path program 1 times [2023-04-02 01:02:52,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 01:02:52,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829513086] [2023-04-02 01:02:52,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 01:02:52,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 01:02:52,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:53,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 01:02:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:53,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 01:02:53,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:53,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-04-02 01:02:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:53,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:53,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-04-02 01:02:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 01:02:54,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-04-02 01:02:54,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat