/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/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain IntervalDomain -i ../sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 22:52:35,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 22:52:35,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 22:52:35,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 22:52:35,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 22:52:35,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 22:52:35,733 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 22:52:35,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 22:52:35,735 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 22:52:35,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 22:52:35,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 22:52:35,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 22:52:35,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 22:52:35,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 22:52:35,742 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 22:52:35,743 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 22:52:35,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 22:52:35,744 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 22:52:35,745 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 22:52:35,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 22:52:35,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 22:52:35,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 22:52:35,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 22:52:35,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 22:52:35,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 22:52:35,761 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 22:52:35,761 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 22:52:35,762 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 22:52:35,763 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-03-31 22:52:35,783 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 22:52:35,784 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 22:52:35,784 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 22:52:35,784 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 22:52:35,785 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 22:52:35,785 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 22:52:35,785 INFO L138 SettingsManager]: * User list type=DISABLED [2023-03-31 22:52:35,785 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-03-31 22:52:35,785 INFO L138 SettingsManager]: * Explicit value domain=true [2023-03-31 22:52:35,785 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-03-31 22:52:35,785 INFO L138 SettingsManager]: * Octagon Domain=false [2023-03-31 22:52:35,786 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-03-31 22:52:35,786 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-03-31 22:52:35,786 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-03-31 22:52:35,786 INFO L138 SettingsManager]: * Interval Domain=false [2023-03-31 22:52:35,786 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-03-31 22:52:35,786 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-03-31 22:52:35,786 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-03-31 22:52:35,787 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 22:52:35,787 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 22:52:35,787 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 22:52:35,787 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 22:52:35,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 22:52:35,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 22:52:35,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 22:52:35,788 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 22:52:35,788 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 22:52:35,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 22:52:35,788 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 22:52:35,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 22:52:35,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 22:52:35,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 22:52:35,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:52:35,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 22:52:35,789 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-03-31 22:52:35,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 22:52:35,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 22:52:35,789 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-03-31 22:52:35,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 22:52:35,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 22:52:35,790 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-03-31 22:52:35,790 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2023-03-31 22:52:36,011 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 22:52:36,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 22:52:36,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 22:52:36,039 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 22:52:36,040 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 22:52:36,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i [2023-03-31 22:52:37,156 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 22:52:37,436 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 22:52:37,437 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_lock.i [2023-03-31 22:52:37,450 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e4bed590/d3e361ad54cb483cb039efd402701213/FLAGac3ff4bfb [2023-03-31 22:52:37,467 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e4bed590/d3e361ad54cb483cb039efd402701213 [2023-03-31 22:52:37,469 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 22:52:37,470 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 22:52:37,471 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 22:52:37,471 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 22:52:37,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 22:52:37,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:52:37" (1/1) ... [2023-03-31 22:52:37,476 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@429254c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:52:37, skipping insertion in model container [2023-03-31 22:52:37,476 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 10:52:37" (1/1) ... [2023-03-31 22:52:37,483 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 22:52:37,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 22:52:37,862 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_double_lock.i[25842,25855] [2023-03-31 22:52:37,867 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_double_lock.i[25967,25980] [2023-03-31 22:52:37,868 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_double_lock.i[26082,26095] [2023-03-31 22:52:37,875 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:52:37,889 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 22:52:37,925 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_double_lock.i[25842,25855] [2023-03-31 22:52:37,926 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_double_lock.i[25967,25980] [2023-03-31 22:52:37,927 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_double_lock.i[26082,26095] [2023-03-31 22:52:37,928 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 22:52:37,954 INFO L208 MainTranslator]: Completed translation [2023-03-31 22:52:37,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:52:37 WrapperNode [2023-03-31 22:52:37,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 22:52:37,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 22:52:37,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 22:52:37,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 22:52:37,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:52:37" (1/1) ... [2023-03-31 22:52:37,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:52:37" (1/1) ... [2023-03-31 22:52:37,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:52:37" (1/1) ... [2023-03-31 22:52:37,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:52:37" (1/1) ... [2023-03-31 22:52:37,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:52:37" (1/1) ... [2023-03-31 22:52:38,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:52:37" (1/1) ... [2023-03-31 22:52:38,008 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:52:37" (1/1) ... [2023-03-31 22:52:38,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:52:37" (1/1) ... [2023-03-31 22:52:38,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 22:52:38,023 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 22:52:38,023 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 22:52:38,023 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 22:52:38,024 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:52:37" (1/1) ... [2023-03-31 22:52:38,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 22:52:38,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:52:38,059 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) [2023-03-31 22:52:38,069 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 [2023-03-31 22:52:38,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 22:52:38,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 22:52:38,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2023-03-31 22:52:38,093 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2023-03-31 22:52:38,093 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 22:52:38,093 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 22:52:38,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-03-31 22:52:38,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2023-03-31 22:52:38,094 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2023-03-31 22:52:38,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-03-31 22:52:38,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2023-03-31 22:52:38,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2023-03-31 22:52:38,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2023-03-31 22:52:38,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2023-03-31 22:52:38,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_empty [2023-03-31 22:52:38,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_set [2023-03-31 22:52:38,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2023-03-31 22:52:38,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_del [2023-03-31 22:52:38,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-03-31 22:52:38,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_empty [2023-03-31 22:52:38,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2023-03-31 22:52:38,095 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-03-31 22:52:38,095 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-03-31 22:52:38,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2023-03-31 22:52:38,095 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2023-03-31 22:52:38,095 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 22:52:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2023-03-31 22:52:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2023-03-31 22:52:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2023-03-31 22:52:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2023-03-31 22:52:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2023-03-31 22:52:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2023-03-31 22:52:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2023-03-31 22:52:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2023-03-31 22:52:38,096 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2023-03-31 22:52:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2023-03-31 22:52:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2023-03-31 22:52:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2023-03-31 22:52:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2023-03-31 22:52:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2023-03-31 22:52:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2023-03-31 22:52:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2023-03-31 22:52:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2023-03-31 22:52:38,097 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2023-03-31 22:52:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure select [2023-03-31 22:52:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2023-03-31 22:52:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2023-03-31 22:52:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2023-03-31 22:52:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2023-03-31 22:52:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure random [2023-03-31 22:52:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2023-03-31 22:52:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2023-03-31 22:52:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2023-03-31 22:52:38,098 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2023-03-31 22:52:38,099 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2023-03-31 22:52:38,101 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2023-03-31 22:52:38,101 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2023-03-31 22:52:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2023-03-31 22:52:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2023-03-31 22:52:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2023-03-31 22:52:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2023-03-31 22:52:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2023-03-31 22:52:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2023-03-31 22:52:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2023-03-31 22:52:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2023-03-31 22:52:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2023-03-31 22:52:38,102 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2023-03-31 22:52:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2023-03-31 22:52:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2023-03-31 22:52:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2023-03-31 22:52:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2023-03-31 22:52:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2023-03-31 22:52:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2023-03-31 22:52:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2023-03-31 22:52:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2023-03-31 22:52:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2023-03-31 22:52:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2023-03-31 22:52:38,103 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2023-03-31 22:52:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2023-03-31 22:52:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2023-03-31 22:52:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2023-03-31 22:52:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure free [2023-03-31 22:52:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2023-03-31 22:52:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2023-03-31 22:52:38,104 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2023-03-31 22:52:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2023-03-31 22:52:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 22:52:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2023-03-31 22:52:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2023-03-31 22:52:38,105 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-31 22:52:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2023-03-31 22:52:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2023-03-31 22:52:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2023-03-31 22:52:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2023-03-31 22:52:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2023-03-31 22:52:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2023-03-31 22:52:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2023-03-31 22:52:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2023-03-31 22:52:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2023-03-31 22:52:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2023-03-31 22:52:38,106 INFO L130 BoogieDeclarations]: Found specification of procedure system [2023-03-31 22:52:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2023-03-31 22:52:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2023-03-31 22:52:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2023-03-31 22:52:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2023-03-31 22:52:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2023-03-31 22:52:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2023-03-31 22:52:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure div [2023-03-31 22:52:38,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2023-03-31 22:52:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2023-03-31 22:52:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2023-03-31 22:52:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2023-03-31 22:52:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2023-03-31 22:52:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2023-03-31 22:52:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2023-03-31 22:52:38,108 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2023-03-31 22:52:38,109 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2023-03-31 22:52:38,110 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2023-03-31 22:52:38,112 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2023-03-31 22:52:38,112 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2023-03-31 22:52:38,117 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2023-03-31 22:52:38,118 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2023-03-31 22:52:38,118 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2023-03-31 22:52:38,118 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2023-03-31 22:52:38,118 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2023-03-31 22:52:38,118 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2023-03-31 22:52:38,119 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2023-03-31 22:52:38,119 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2023-03-31 22:52:38,119 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 22:52:38,119 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-03-31 22:52:38,119 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-03-31 22:52:38,119 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 22:52:38,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 22:52:38,119 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 22:52:38,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-31 22:52:38,119 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-03-31 22:52:38,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-03-31 22:52:38,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2023-03-31 22:52:38,120 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2023-03-31 22:52:38,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-03-31 22:52:38,120 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-03-31 22:52:38,120 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2023-03-31 22:52:38,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2023-03-31 22:52:38,120 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-03-31 22:52:38,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2023-03-31 22:52:38,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2023-03-31 22:52:38,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_empty [2023-03-31 22:52:38,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_set [2023-03-31 22:52:38,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2023-03-31 22:52:38,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_del [2023-03-31 22:52:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-03-31 22:52:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_empty [2023-03-31 22:52:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 22:52:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2023-03-31 22:52:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-03-31 22:52:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-03-31 22:52:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2023-03-31 22:52:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2023-03-31 22:52:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 22:52:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 22:52:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 22:52:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-03-31 22:52:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 22:52:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 22:52:38,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 22:52:38,348 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 22:52:38,350 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 22:52:38,622 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 22:52:38,694 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 22:52:38,694 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-03-31 22:52:38,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:52:38 BoogieIcfgContainer [2023-03-31 22:52:38,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 22:52:38,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 22:52:38,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 22:52:38,701 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 22:52:38,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 10:52:37" (1/3) ... [2023-03-31 22:52:38,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24183164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:52:38, skipping insertion in model container [2023-03-31 22:52:38,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 10:52:37" (2/3) ... [2023-03-31 22:52:38,702 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24183164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 10:52:38, skipping insertion in model container [2023-03-31 22:52:38,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 10:52:38" (3/3) ... [2023-03-31 22:52:38,704 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_double_lock.i [2023-03-31 22:52:38,719 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 22:52:38,719 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-03-31 22:52:38,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 22:52:38,768 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=FINITE_AUTOMATA, 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;@2ee7fd7f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-03-31 22:52:38,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-03-31 22:52:38,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 52 states have internal predecessors, (59), 24 states have call successors, (24), 18 states have call predecessors, (24), 18 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2023-03-31 22:52:38,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-03-31 22:52:38,777 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:52:38,778 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:52:38,778 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:52:38,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:52:38,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1953809322, now seen corresponding path program 1 times [2023-03-31 22:52:38,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:52:38,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510324454] [2023-03-31 22:52:38,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:52:38,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:52:38,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:52:39,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-03-31 22:52:39,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:52:39,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510324454] [2023-03-31 22:52:39,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510324454] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:52:39,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:52:39,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 22:52:39,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106210478] [2023-03-31 22:52:39,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:52:39,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 22:52:39,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:52:39,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 22:52:39,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 22:52:39,170 INFO L87 Difference]: Start difference. First operand has 95 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 52 states have internal predecessors, (59), 24 states have call successors, (24), 18 states have call predecessors, (24), 18 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-03-31 22:52:39,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:52:39,292 INFO L93 Difference]: Finished difference Result 177 states and 208 transitions. [2023-03-31 22:52:39,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 22:52:39,296 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 34 [2023-03-31 22:52:39,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:52:39,307 INFO L225 Difference]: With dead ends: 177 [2023-03-31 22:52:39,307 INFO L226 Difference]: Without dead ends: 89 [2023-03-31 22:52:39,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 22:52:39,314 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 22:52:39,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 259 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 22:52:39,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-03-31 22:52:39,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-03-31 22:52:39,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 49 states have internal predecessors, (53), 24 states have call successors, (24), 18 states have call predecessors, (24), 16 states have return successors, (24), 22 states have call predecessors, (24), 21 states have call successors, (24) [2023-03-31 22:52:39,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2023-03-31 22:52:39,353 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 101 transitions. Word has length 34 [2023-03-31 22:52:39,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:52:39,355 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 101 transitions. [2023-03-31 22:52:39,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2023-03-31 22:52:39,355 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 101 transitions. [2023-03-31 22:52:39,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-03-31 22:52:39,357 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:52:39,357 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:52:39,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 22:52:39,357 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:52:39,358 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:52:39,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1192340230, now seen corresponding path program 1 times [2023-03-31 22:52:39,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:52:39,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054056036] [2023-03-31 22:52:39,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:52:39,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:52:39,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:52:39,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-03-31 22:52:39,902 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:52:39,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054056036] [2023-03-31 22:52:39,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054056036] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:52:39,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 22:52:39,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 22:52:39,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40231436] [2023-03-31 22:52:39,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:52:39,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 22:52:39,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:52:39,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 22:52:39,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 22:52:39,914 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-03-31 22:52:40,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:52:40,370 INFO L93 Difference]: Finished difference Result 238 states and 292 transitions. [2023-03-31 22:52:40,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-31 22:52:40,370 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2023-03-31 22:52:40,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:52:40,377 INFO L225 Difference]: With dead ends: 238 [2023-03-31 22:52:40,378 INFO L226 Difference]: Without dead ends: 162 [2023-03-31 22:52:40,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 22:52:40,382 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 86 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-03-31 22:52:40,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 293 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-03-31 22:52:40,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-03-31 22:52:40,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 132. [2023-03-31 22:52:40,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 71 states have (on average 1.1971830985915493) internal successors, (85), 76 states have internal predecessors, (85), 34 states have call successors, (34), 25 states have call predecessors, (34), 24 states have return successors, (41), 31 states have call predecessors, (41), 31 states have call successors, (41) [2023-03-31 22:52:40,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 160 transitions. [2023-03-31 22:52:40,420 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 160 transitions. Word has length 35 [2023-03-31 22:52:40,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:52:40,420 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 160 transitions. [2023-03-31 22:52:40,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-03-31 22:52:40,420 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 160 transitions. [2023-03-31 22:52:40,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2023-03-31 22:52:40,426 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:52:40,426 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:52:40,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 22:52:40,426 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:52:40,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:52:40,429 INFO L85 PathProgramCache]: Analyzing trace with hash -893445544, now seen corresponding path program 1 times [2023-03-31 22:52:40,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:52:40,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864163041] [2023-03-31 22:52:40,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:52:40,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:52:40,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:52:40,544 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-03-31 22:52:40,545 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:52:40,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864163041] [2023-03-31 22:52:40,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864163041] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:52:40,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512155180] [2023-03-31 22:52:40,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:52:40,546 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:52:40,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:52:40,553 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 22:52:40,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-31 22:52:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:52:40,777 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 5 conjunts are in the unsatisfiable core [2023-03-31 22:52:40,787 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:52:40,839 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-03-31 22:52:40,840 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 22:52:40,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512155180] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:52:40,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 22:52:40,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2023-03-31 22:52:40,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073331671] [2023-03-31 22:52:40,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:52:40,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 22:52:40,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:52:40,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 22:52:40,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 22:52:40,845 INFO L87 Difference]: Start difference. First operand 132 states and 160 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-03-31 22:52:40,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:52:40,929 INFO L93 Difference]: Finished difference Result 236 states and 288 transitions. [2023-03-31 22:52:40,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 22:52:40,929 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 78 [2023-03-31 22:52:40,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:52:40,933 INFO L225 Difference]: With dead ends: 236 [2023-03-31 22:52:40,933 INFO L226 Difference]: Without dead ends: 138 [2023-03-31 22:52:40,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 22:52:40,938 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-03-31 22:52:40,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 238 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-03-31 22:52:40,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-03-31 22:52:40,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2023-03-31 22:52:40,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 76 states have (on average 1.1842105263157894) internal successors, (90), 80 states have internal predecessors, (90), 34 states have call successors, (34), 25 states have call predecessors, (34), 25 states have return successors, (42), 33 states have call predecessors, (42), 31 states have call successors, (42) [2023-03-31 22:52:40,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 166 transitions. [2023-03-31 22:52:40,968 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 166 transitions. Word has length 78 [2023-03-31 22:52:40,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:52:40,968 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 166 transitions. [2023-03-31 22:52:40,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2023-03-31 22:52:40,969 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 166 transitions. [2023-03-31 22:52:40,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-03-31 22:52:40,975 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:52:40,975 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:52:40,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-03-31 22:52:41,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:52:41,182 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:52:41,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:52:41,182 INFO L85 PathProgramCache]: Analyzing trace with hash 1202886494, now seen corresponding path program 1 times [2023-03-31 22:52:41,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:52:41,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60573406] [2023-03-31 22:52:41,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:52:41,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:52:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:52:41,749 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-03-31 22:52:41,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-03-31 22:52:41,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60573406] [2023-03-31 22:52:41,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60573406] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-31 22:52:41,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363493858] [2023-03-31 22:52:41,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:52:41,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-31 22:52:41,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 22:52:41,751 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-31 22:52:41,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-31 22:52:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 22:52:41,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 57 conjunts are in the unsatisfiable core [2023-03-31 22:52:41,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-31 22:52:42,690 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-03-31 22:52:42,690 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-31 22:52:42,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [363493858] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 22:52:42,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-31 22:52:42,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2023-03-31 22:52:42,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770162670] [2023-03-31 22:52:42,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 22:52:42,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-03-31 22:52:42,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-03-31 22:52:42,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-03-31 22:52:42,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2023-03-31 22:52:42,695 INFO L87 Difference]: Start difference. First operand 138 states and 166 transitions. Second operand has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 5 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-03-31 22:52:43,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 22:52:43,591 INFO L93 Difference]: Finished difference Result 307 states and 371 transitions. [2023-03-31 22:52:43,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-03-31 22:52:43,592 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 5 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 80 [2023-03-31 22:52:43,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 22:52:43,594 INFO L225 Difference]: With dead ends: 307 [2023-03-31 22:52:43,594 INFO L226 Difference]: Without dead ends: 194 [2023-03-31 22:52:43,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=732, Unknown=0, NotChecked=0, Total=930 [2023-03-31 22:52:43,596 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 219 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 22:52:43,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 259 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 22:52:43,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-03-31 22:52:43,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 139. [2023-03-31 22:52:43,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 79 states have (on average 1.1772151898734178) internal successors, (93), 84 states have internal predecessors, (93), 31 states have call successors, (31), 25 states have call predecessors, (31), 26 states have return successors, (39), 29 states have call predecessors, (39), 28 states have call successors, (39) [2023-03-31 22:52:43,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 163 transitions. [2023-03-31 22:52:43,630 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 163 transitions. Word has length 80 [2023-03-31 22:52:43,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 22:52:43,631 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 163 transitions. [2023-03-31 22:52:43,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.0) internal successors, (36), 9 states have internal predecessors, (36), 5 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2023-03-31 22:52:43,631 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 163 transitions. [2023-03-31 22:52:43,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-03-31 22:52:43,633 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 22:52:43,633 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 22:52:43,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-31 22:52:43,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-03-31 22:52:43,845 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 22:52:43,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 22:52:43,845 INFO L85 PathProgramCache]: Analyzing trace with hash 470184712, now seen corresponding path program 1 times [2023-03-31 22:52:43,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-03-31 22:52:43,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392060856] [2023-03-31 22:52:43,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 22:52:43,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 22:52:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 22:52:43,897 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-03-31 22:52:43,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-03-31 22:52:43,954 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-03-31 22:52:43,955 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-03-31 22:52:43,956 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-03-31 22:52:43,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-03-31 22:52:43,957 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_check_final_stateErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-03-31 22:52:43,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 22:52:43,960 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-03-31 22:52:43,964 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-03-31 22:52:43,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.03 10:52:43 BoogieIcfgContainer [2023-03-31 22:52:43,999 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-03-31 22:52:44,000 INFO L158 Benchmark]: Toolchain (without parser) took 6529.32ms. Allocated memory was 234.9MB in the beginning and 282.1MB in the end (delta: 47.2MB). Free memory was 194.0MB in the beginning and 164.9MB in the end (delta: 29.1MB). Peak memory consumption was 77.3MB. Max. memory is 8.0GB. [2023-03-31 22:52:44,000 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 195.0MB. Free memory is still 141.2MB. There was no memory consumed. Max. memory is 8.0GB. [2023-03-31 22:52:44,000 INFO L158 Benchmark]: CACSL2BoogieTranslator took 483.76ms. Allocated memory is still 234.9MB. Free memory was 194.0MB in the beginning and 174.6MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2023-03-31 22:52:44,000 INFO L158 Benchmark]: Boogie Preprocessor took 66.60ms. Allocated memory is still 234.9MB. Free memory was 174.6MB in the beginning and 171.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-03-31 22:52:44,000 INFO L158 Benchmark]: RCFGBuilder took 673.67ms. Allocated memory is still 234.9MB. Free memory was 171.5MB in the beginning and 135.8MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. [2023-03-31 22:52:44,001 INFO L158 Benchmark]: TraceAbstraction took 5300.80ms. Allocated memory was 234.9MB in the beginning and 282.1MB in the end (delta: 47.2MB). Free memory was 135.3MB in the beginning and 164.9MB in the end (delta: -29.6MB). Peak memory consumption was 18.6MB. Max. memory is 8.0GB. [2023-03-31 22:52:44,002 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 195.0MB. Free memory is still 141.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 483.76ms. Allocated memory is still 234.9MB. Free memory was 194.0MB in the beginning and 174.6MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 66.60ms. Allocated memory is still 234.9MB. Free memory was 174.6MB in the beginning and 171.5MB in the end (delta: 3.1MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 673.67ms. Allocated memory is still 234.9MB. Free memory was 171.5MB in the beginning and 135.8MB in the end (delta: 35.7MB). Peak memory consumption was 35.7MB. Max. memory is 8.0GB. * TraceAbstraction took 5300.80ms. Allocated memory was 234.9MB in the beginning and 282.1MB in the end (delta: 47.2MB). Free memory was 135.3MB in the beginning and 164.9MB in the end (delta: -29.6MB). Peak memory consumption was 18.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 669]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L665] struct ldv_list_head mutexes = { &(mutexes), &(mutexes) }; [L692] CALL foo() VAL [mutexes={3:0}] [L681] FCALL ldv_initialize() VAL [mutexes={3:0}] [L682] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [\old(size)=8, mutexes={3:0}] [L576] void *ptr = malloc(size); [L577] CALL assume_abort_if_not(ptr!=0) VAL [\old(cond)=1, mutexes={3:0}] [L565] COND FALSE !(!cond) [L577] RET assume_abort_if_not(ptr!=0) VAL [\old(size)=8, mutexes={3:0}, ptr={-1:0}, size=8] [L578] return ptr; [L682] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [ldv_successful_malloc(sizeof(struct mutex))={-1:0}, mutexes={3:0}] [L682] struct mutex *m1 = ldv_successful_malloc(sizeof(struct mutex)); [L683] CALL, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [\old(size)=8, mutexes={3:0}] [L576] void *ptr = malloc(size); [L577] CALL assume_abort_if_not(ptr!=0) VAL [\old(cond)=1, mutexes={3:0}] [L565] COND FALSE !(!cond) [L577] RET assume_abort_if_not(ptr!=0) VAL [\old(size)=8, mutexes={3:0}, ptr={-2:0}, size=8] [L578] return ptr; [L683] RET, EXPR ldv_successful_malloc(sizeof(struct mutex)) VAL [ldv_successful_malloc(sizeof(struct mutex))={-2:0}, m1={-1:0}, mutexes={3:0}] [L683] struct mutex *m2 = ldv_successful_malloc(sizeof(struct mutex)); [L684] CALL mutex_lock(m1) VAL [m={-1:0}, mutexes={3:0}] [L669] CALL ldv_is_in_set(m, &mutexes) VAL [e={-1:0}, mutexes={3:0}, s={3:0}] [L654] struct ldv_list_element *m; [L655] EXPR (s)->next [L655] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L655] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [__mptr={3:0}, e={-1:0}, e={-1:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L655] COND FALSE !(&m->list != (s)) [L660] return 0; VAL [\result=0, __mptr={3:0}, e={-1:0}, e={-1:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L669] RET ldv_is_in_set(m, &mutexes) VAL [ldv_is_in_set(m, &mutexes)=0, m={-1:0}, m={-1:0}, mutexes={3:0}] [L669] COND FALSE !(ldv_is_in_set(m, &mutexes)) [L670] CALL ldv_set_add(m, &mutexes) VAL [mutexes={3:0}, new={-1:0}, s={3:0}] [L636] CALL, EXPR ldv_is_in_set(new, s) VAL [e={-1:0}, mutexes={3:0}, s={3:0}] [L654] struct ldv_list_element *m; [L655] EXPR (s)->next [L655] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L655] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [__mptr={3:0}, e={-1:0}, e={-1:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L655] COND FALSE !(&m->list != (s)) [L660] return 0; VAL [\result=0, __mptr={3:0}, e={-1:0}, e={-1:0}, m={3:-4}, mutexes={3:0}, s={3:0}, s={3:0}] [L636] RET, EXPR ldv_is_in_set(new, s) VAL [ldv_is_in_set(new, s)=0, mutexes={3:0}, new={-1:0}, new={-1:0}, s={3:0}, s={3:0}] [L636] COND TRUE !ldv_is_in_set(new, s) [L637] struct ldv_list_element *le; VAL [mutexes={3:0}, new={-1:0}, new={-1:0}, s={3:0}, s={3:0}] [L638] CALL, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [\old(size)=12, mutexes={3:0}] [L576] void *ptr = malloc(size); [L577] CALL assume_abort_if_not(ptr!=0) VAL [\old(cond)=1, mutexes={3:0}] [L565] COND FALSE !(!cond) [L577] RET assume_abort_if_not(ptr!=0) VAL [\old(size)=12, mutexes={3:0}, ptr={-3:0}, size=12] [L578] return ptr; [L638] RET, EXPR ldv_successful_malloc(sizeof(struct ldv_list_element)) VAL [ldv_successful_malloc(sizeof(struct ldv_list_element))={-3:0}, mutexes={3:0}, new={-1:0}, new={-1:0}, s={3:0}, s={3:0}] [L638] le = (struct ldv_list_element*)ldv_successful_malloc(sizeof(struct ldv_list_element)) [L639] le->e = new VAL [le={-3:0}, mutexes={3:0}, new={-1:0}, new={-1:0}, s={3:0}, s={3:0}] [L640] CALL ldv_list_add(&le->list, s) VAL [head={3:0}, mutexes={3:0}, new={-3:4}] [L608] EXPR head->next VAL [head->next={3:0}, head={3:0}, head={3:0}, mutexes={3:0}, new={-3:4}, new={-3:4}] [L608] CALL __ldv_list_add(new, head, head->next) VAL [mutexes={3:0}, new={-3:4}, next={3:0}, prev={3:0}] [L596] next->prev = new [L597] new->next = next [L598] new->prev = prev [L599] prev->next = new [L608] RET __ldv_list_add(new, head, head->next) VAL [head->next={3:0}, head={3:0}, head={3:0}, mutexes={3:0}, new={-3:4}, new={-3:4}] [L640] RET ldv_list_add(&le->list, s) VAL [le={-3:0}, mutexes={3:0}, new={-1:0}, new={-1:0}, s={3:0}, s={3:0}] [L670] RET ldv_set_add(m, &mutexes) VAL [m={-1:0}, m={-1:0}, mutexes={3:0}] [L684] RET mutex_lock(m1) VAL [m1={-1:0}, m2={-2:0}, mutexes={3:0}] [L685] CALL mutex_lock(m1) VAL [m={-1:0}, mutexes={3:0}] [L669] CALL ldv_is_in_set(m, &mutexes) VAL [e={-1:0}, mutexes={3:0}, s={3:0}] [L654] struct ldv_list_element *m; [L655] EXPR (s)->next [L655] const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); [L655] m = ({ const typeof( ((typeof(*m) *)0)->list ) *__mptr = ((s)->next); (typeof(*m) *)( (char *)__mptr - ((size_t) &((typeof(*m) *)0)->list) );}) VAL [__mptr={-3:4}, e={-1:0}, e={-1:0}, m={-3:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L655] COND TRUE &m->list != (s) [L656] EXPR m->e VAL [__mptr={-3:4}, e={-1:0}, e={-1:0}, m->e={-1:0}, m={-3:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L656] COND TRUE m->e == e [L657] return 1; VAL [\result=1, __mptr={-3:4}, e={-1:0}, e={-1:0}, m={-3:0}, mutexes={3:0}, s={3:0}, s={3:0}] [L669] RET ldv_is_in_set(m, &mutexes) VAL [ldv_is_in_set(m, &mutexes)=1, m={-1:0}, m={-1:0}, mutexes={3:0}] [L669] COND TRUE ldv_is_in_set(m, &mutexes) [L669] reach_error() VAL [m={-1:0}, m={-1:0}, mutexes={3:0}] - UnprovableResult [Line: 673]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 677]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 26 procedures, 111 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 5.2s, OverallIterations: 5, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 322 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 305 mSDsluCounter, 1049 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 701 mSDsCounter, 95 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 942 IncrementalHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 95 mSolverCounterUnsat, 348 mSDtfsCounter, 942 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 200 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=139occurred in iteration=4, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 4 MinimizatonAttempts, 85 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 457 NumberOfCodeBlocks, 457 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 379 ConstructedInterpolants, 0 QuantifiedInterpolants, 1984 SizeOfPredicates, 12 NumberOfNonLiveVariables, 946 ConjunctsInSsa, 62 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 206/250 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-03-31 22:52:44,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...