./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d82f1b23bea4834b28dfbe602ddf1f3e06a3ee60a847e3002a9403f092f2c830 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 20:41:02,331 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 20:41:02,408 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 20:41:02,416 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 20:41:02,417 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 20:41:02,444 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 20:41:02,445 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 20:41:02,445 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 20:41:02,446 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 20:41:02,446 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 20:41:02,446 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 20:41:02,447 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 20:41:02,447 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 20:41:02,448 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 20:41:02,448 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 20:41:02,449 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 20:41:02,449 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 20:41:02,449 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 20:41:02,450 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 20:41:02,450 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 20:41:02,450 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 20:41:02,454 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 20:41:02,455 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 20:41:02,455 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 20:41:02,455 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 20:41:02,455 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 20:41:02,455 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 20:41:02,456 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 20:41:02,456 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 20:41:02,456 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 20:41:02,456 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 20:41:02,457 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 20:41:02,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 20:41:02,457 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 20:41:02,457 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 20:41:02,458 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 20:41:02,458 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 20:41:02,459 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 20:41:02,460 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 20:41:02,460 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 20:41:02,460 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 20:41:02,460 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 20:41:02,461 INFO L153 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d82f1b23bea4834b28dfbe602ddf1f3e06a3ee60a847e3002a9403f092f2c830 [2024-11-19 20:41:02,713 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 20:41:02,739 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 20:41:02,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 20:41:02,743 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 20:41:02,743 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 20:41:02,744 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i [2024-11-19 20:41:04,189 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 20:41:04,432 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 20:41:04,433 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-sets/test_mutex_double_unlock.i [2024-11-19 20:41:04,448 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c10b7c3af/2da608f31b7d4892ba69a07213bc6988/FLAG02540c457 [2024-11-19 20:41:04,462 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c10b7c3af/2da608f31b7d4892ba69a07213bc6988 [2024-11-19 20:41:04,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 20:41:04,466 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 20:41:04,468 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 20:41:04,468 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 20:41:04,474 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 20:41:04,474 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:41:04" (1/1) ... [2024-11-19 20:41:04,475 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67c744f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:04, skipping insertion in model container [2024-11-19 20:41:04,476 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:41:04" (1/1) ... [2024-11-19 20:41:04,519 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 20:41:04,831 WARN L250 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_unlock.i[25842,25855] [2024-11-19 20:41:04,836 WARN L250 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_unlock.i[25967,25980] [2024-11-19 20:41:04,840 WARN L250 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_unlock.i[26082,26095] [2024-11-19 20:41:04,843 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 20:41:04,853 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 20:41:04,945 WARN L250 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_unlock.i[25842,25855] [2024-11-19 20:41:04,947 WARN L250 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_unlock.i[25967,25980] [2024-11-19 20:41:04,952 WARN L250 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_unlock.i[26082,26095] [2024-11-19 20:41:04,953 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 20:41:05,008 INFO L204 MainTranslator]: Completed translation [2024-11-19 20:41:05,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:05 WrapperNode [2024-11-19 20:41:05,010 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 20:41:05,011 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 20:41:05,011 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 20:41:05,012 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 20:41:05,019 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:05" (1/1) ... [2024-11-19 20:41:05,032 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:05" (1/1) ... [2024-11-19 20:41:05,064 INFO L138 Inliner]: procedures = 139, calls = 57, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 140 [2024-11-19 20:41:05,065 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 20:41:05,065 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 20:41:05,065 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 20:41:05,066 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 20:41:05,081 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:05" (1/1) ... [2024-11-19 20:41:05,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:05" (1/1) ... [2024-11-19 20:41:05,086 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:05" (1/1) ... [2024-11-19 20:41:05,120 INFO L175 MemorySlicer]: Split 22 memory accesses to 2 slices as follows [2, 20]. 91 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 2]. The 7 writes are split as follows [0, 7]. [2024-11-19 20:41:05,120 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:05" (1/1) ... [2024-11-19 20:41:05,121 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:05" (1/1) ... [2024-11-19 20:41:05,135 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:05" (1/1) ... [2024-11-19 20:41:05,141 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:05" (1/1) ... [2024-11-19 20:41:05,143 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:05" (1/1) ... [2024-11-19 20:41:05,145 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:05" (1/1) ... [2024-11-19 20:41:05,148 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 20:41:05,150 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 20:41:05,150 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 20:41:05,150 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 20:41:05,154 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:05" (1/1) ... [2024-11-19 20:41:05,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 20:41:05,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 20:41:05,188 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 20:41:05,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 20:41:05,257 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2024-11-19 20:41:05,260 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2024-11-19 20:41:05,262 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2024-11-19 20:41:05,262 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2024-11-19 20:41:05,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 20:41:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2024-11-19 20:41:05,263 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2024-11-19 20:41:05,263 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 20:41:05,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-19 20:41:05,264 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-19 20:41:05,264 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2024-11-19 20:41:05,264 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2024-11-19 20:41:05,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-19 20:41:05,265 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-19 20:41:05,265 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 20:41:05,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-19 20:41:05,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-19 20:41:05,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 20:41:05,265 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 20:41:05,265 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2024-11-19 20:41:05,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2024-11-19 20:41:05,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 20:41:05,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 20:41:05,393 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 20:41:05,399 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 20:41:05,673 INFO L? ?]: Removed 73 outVars from TransFormulas that were not future-live. [2024-11-19 20:41:05,673 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 20:41:05,690 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 20:41:05,691 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 20:41:05,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:41:05 BoogieIcfgContainer [2024-11-19 20:41:05,692 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 20:41:05,695 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 20:41:05,695 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 20:41:05,698 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 20:41:05,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:41:04" (1/3) ... [2024-11-19 20:41:05,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b28ffcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:41:05, skipping insertion in model container [2024-11-19 20:41:05,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:41:05" (2/3) ... [2024-11-19 20:41:05,703 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b28ffcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:41:05, skipping insertion in model container [2024-11-19 20:41:05,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:41:05" (3/3) ... [2024-11-19 20:41:05,704 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_double_unlock.i [2024-11-19 20:41:05,719 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 20:41:05,719 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-19 20:41:05,781 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 20:41:05,788 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@23f602c5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 20:41:05,788 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-19 20:41:05,794 INFO L276 IsEmpty]: Start isEmpty. Operand has 70 states, 50 states have (on average 1.28) internal successors, (64), 53 states have internal predecessors, (64), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-19 20:41:05,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-19 20:41:05,802 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 20:41:05,803 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 20:41:05,804 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 20:41:05,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 20:41:05,811 INFO L85 PathProgramCache]: Analyzing trace with hash 709034920, now seen corresponding path program 1 times [2024-11-19 20:41:05,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 20:41:05,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222289425] [2024-11-19 20:41:05,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:41:05,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 20:41:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:06,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 20:41:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:06,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 20:41:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:06,146 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-19 20:41:06,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:06,167 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 20:41:06,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 20:41:06,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222289425] [2024-11-19 20:41:06,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222289425] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 20:41:06,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 20:41:06,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 20:41:06,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402147527] [2024-11-19 20:41:06,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 20:41:06,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 20:41:06,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 20:41:06,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 20:41:06,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 20:41:06,209 INFO L87 Difference]: Start difference. First operand has 70 states, 50 states have (on average 1.28) internal successors, (64), 53 states have internal predecessors, (64), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 20:41:06,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 20:41:06,434 INFO L93 Difference]: Finished difference Result 147 states and 193 transitions. [2024-11-19 20:41:06,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 20:41:06,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2024-11-19 20:41:06,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 20:41:06,447 INFO L225 Difference]: With dead ends: 147 [2024-11-19 20:41:06,448 INFO L226 Difference]: Without dead ends: 76 [2024-11-19 20:41:06,451 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 20:41:06,455 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 35 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 20:41:06,459 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 74 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 20:41:06,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2024-11-19 20:41:06,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2024-11-19 20:41:06,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 46 states have (on average 1.1521739130434783) internal successors, (53), 48 states have internal predecessors, (53), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-19 20:41:06,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2024-11-19 20:41:06,503 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 28 [2024-11-19 20:41:06,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 20:41:06,504 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2024-11-19 20:41:06,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-19 20:41:06,505 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2024-11-19 20:41:06,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-19 20:41:06,507 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 20:41:06,507 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 20:41:06,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 20:41:06,508 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 20:41:06,509 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 20:41:06,509 INFO L85 PathProgramCache]: Analyzing trace with hash -2117471768, now seen corresponding path program 1 times [2024-11-19 20:41:06,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 20:41:06,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988065729] [2024-11-19 20:41:06,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:41:06,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 20:41:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:06,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 20:41:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:06,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 20:41:06,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:06,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-19 20:41:06,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:06,739 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 20:41:06,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 20:41:06,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988065729] [2024-11-19 20:41:06,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988065729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 20:41:06,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 20:41:06,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 20:41:06,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940543574] [2024-11-19 20:41:06,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 20:41:06,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 20:41:06,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 20:41:06,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 20:41:06,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 20:41:06,746 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-19 20:41:06,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 20:41:06,951 INFO L93 Difference]: Finished difference Result 82 states and 98 transitions. [2024-11-19 20:41:06,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 20:41:06,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2024-11-19 20:41:06,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 20:41:06,955 INFO L225 Difference]: With dead ends: 82 [2024-11-19 20:41:06,956 INFO L226 Difference]: Without dead ends: 80 [2024-11-19 20:41:06,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 20:41:06,957 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 38 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 20:41:06,959 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 141 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 20:41:06,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-19 20:41:06,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2024-11-19 20:41:06,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 49 states have (on average 1.1428571428571428) internal successors, (56), 51 states have internal predecessors, (56), 11 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (14), 12 states have call predecessors, (14), 11 states have call successors, (14) [2024-11-19 20:41:06,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2024-11-19 20:41:06,978 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 28 [2024-11-19 20:41:06,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 20:41:06,978 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2024-11-19 20:41:06,978 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 1 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-19 20:41:06,979 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2024-11-19 20:41:06,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-19 20:41:06,982 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 20:41:06,982 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 20:41:06,982 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 20:41:06,982 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 20:41:06,983 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 20:41:06,983 INFO L85 PathProgramCache]: Analyzing trace with hash -542868463, now seen corresponding path program 1 times [2024-11-19 20:41:06,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 20:41:06,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200646165] [2024-11-19 20:41:06,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:41:06,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 20:41:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:07,220 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 20:41:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:07,235 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 20:41:07,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:07,251 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-19 20:41:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:07,350 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-19 20:41:07,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 20:41:07,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200646165] [2024-11-19 20:41:07,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200646165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 20:41:07,351 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 20:41:07,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 20:41:07,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197842149] [2024-11-19 20:41:07,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 20:41:07,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 20:41:07,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 20:41:07,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 20:41:07,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 20:41:07,356 INFO L87 Difference]: Start difference. First operand 69 states and 81 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-19 20:41:07,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 20:41:07,917 INFO L93 Difference]: Finished difference Result 206 states and 259 transitions. [2024-11-19 20:41:07,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 20:41:07,918 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 28 [2024-11-19 20:41:07,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 20:41:07,920 INFO L225 Difference]: With dead ends: 206 [2024-11-19 20:41:07,921 INFO L226 Difference]: Without dead ends: 145 [2024-11-19 20:41:07,922 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-19 20:41:07,923 INFO L432 NwaCegarLoop]: 51 mSDtfsCounter, 132 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 20:41:07,923 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 164 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 20:41:07,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-19 20:41:07,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 120. [2024-11-19 20:41:07,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 86 states have (on average 1.186046511627907) internal successors, (102), 92 states have internal predecessors, (102), 18 states have call successors, (18), 9 states have call predecessors, (18), 13 states have return successors, (29), 18 states have call predecessors, (29), 18 states have call successors, (29) [2024-11-19 20:41:07,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 149 transitions. [2024-11-19 20:41:07,941 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 149 transitions. Word has length 28 [2024-11-19 20:41:07,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 20:41:07,942 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 149 transitions. [2024-11-19 20:41:07,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-19 20:41:07,942 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 149 transitions. [2024-11-19 20:41:07,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-19 20:41:07,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 20:41:07,944 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 20:41:07,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 20:41:07,945 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 20:41:07,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 20:41:07,945 INFO L85 PathProgramCache]: Analyzing trace with hash 391053642, now seen corresponding path program 1 times [2024-11-19 20:41:07,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 20:41:07,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462106778] [2024-11-19 20:41:07,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:41:07,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 20:41:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:08,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 20:41:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:08,016 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 20:41:08,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:08,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-19 20:41:08,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:08,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 20:41:08,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:08,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 20:41:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:08,081 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-19 20:41:08,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:08,091 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 20:41:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:08,096 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 20:41:08,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:08,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-19 20:41:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:08,104 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-19 20:41:08,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 20:41:08,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462106778] [2024-11-19 20:41:08,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462106778] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 20:41:08,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295502898] [2024-11-19 20:41:08,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:41:08,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:41:08,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 20:41:08,108 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) [2024-11-19 20:41:08,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 20:41:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:08,271 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 20:41:08,280 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 20:41:08,315 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-19 20:41:08,315 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 20:41:08,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295502898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 20:41:08,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 20:41:08,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2024-11-19 20:41:08,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622722220] [2024-11-19 20:41:08,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 20:41:08,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 20:41:08,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 20:41:08,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 20:41:08,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 20:41:08,318 INFO L87 Difference]: Start difference. First operand 120 states and 149 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-19 20:41:08,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 20:41:08,343 INFO L93 Difference]: Finished difference Result 219 states and 271 transitions. [2024-11-19 20:41:08,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 20:41:08,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 72 [2024-11-19 20:41:08,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 20:41:08,345 INFO L225 Difference]: With dead ends: 219 [2024-11-19 20:41:08,345 INFO L226 Difference]: Without dead ends: 126 [2024-11-19 20:41:08,346 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 20:41:08,347 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 20:41:08,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 214 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 20:41:08,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-19 20:41:08,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2024-11-19 20:41:08,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 91 states have (on average 1.1758241758241759) internal successors, (107), 96 states have internal predecessors, (107), 18 states have call successors, (18), 9 states have call predecessors, (18), 14 states have return successors, (30), 20 states have call predecessors, (30), 18 states have call successors, (30) [2024-11-19 20:41:08,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 155 transitions. [2024-11-19 20:41:08,370 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 155 transitions. Word has length 72 [2024-11-19 20:41:08,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 20:41:08,370 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 155 transitions. [2024-11-19 20:41:08,370 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2024-11-19 20:41:08,370 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 155 transitions. [2024-11-19 20:41:08,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-19 20:41:08,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 20:41:08,373 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 20:41:08,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 20:41:08,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:41:08,574 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 20:41:08,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 20:41:08,574 INFO L85 PathProgramCache]: Analyzing trace with hash 336841398, now seen corresponding path program 1 times [2024-11-19 20:41:08,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 20:41:08,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817574635] [2024-11-19 20:41:08,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:41:08,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 20:41:08,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:10,638 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 20:41:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:10,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 20:41:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:10,820 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-19 20:41:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:11,660 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 20:41:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:11,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 20:41:11,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:11,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-19 20:41:11,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:11,862 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-19 20:41:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:12,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 20:41:12,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:12,292 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 20:41:12,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 20:41:12,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817574635] [2024-11-19 20:41:12,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817574635] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 20:41:12,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [231468730] [2024-11-19 20:41:12,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:41:12,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:41:12,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 20:41:12,296 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) [2024-11-19 20:41:12,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 20:41:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:12,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 158 conjuncts are in the unsatisfiable core [2024-11-19 20:41:12,474 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 20:41:12,739 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-19 20:41:12,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-19 20:41:13,054 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2024-11-19 20:41:13,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2024-11-19 20:41:13,646 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 20:41:13,836 INFO L349 Elim1Store]: treesize reduction 65, result has 12.2 percent of original size [2024-11-19 20:41:13,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 26 [2024-11-19 20:41:13,986 INFO L349 Elim1Store]: treesize reduction 212, result has 24.8 percent of original size [2024-11-19 20:41:13,986 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 133 treesize of output 77 [2024-11-19 20:41:14,043 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-19 20:41:14,837 INFO L349 Elim1Store]: treesize reduction 373, result has 21.0 percent of original size [2024-11-19 20:41:14,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 282 treesize of output 271 [2024-11-19 20:41:15,377 INFO L349 Elim1Store]: treesize reduction 168, result has 16.4 percent of original size [2024-11-19 20:41:15,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 8 case distinctions, treesize of input 82 treesize of output 55 [2024-11-19 20:41:15,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-19 20:41:15,459 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 19 [2024-11-19 20:41:15,590 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 10 [2024-11-19 20:41:16,795 INFO L349 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2024-11-19 20:41:16,796 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 26 [2024-11-19 20:41:18,412 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 20:41:18,412 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 20:41:19,499 INFO L349 Elim1Store]: treesize reduction 13, result has 69.0 percent of original size [2024-11-19 20:41:19,500 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 632 treesize of output 577 [2024-11-19 20:41:19,582 INFO L349 Elim1Store]: treesize reduction 38, result has 56.8 percent of original size [2024-11-19 20:41:19,582 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 165 treesize of output 190 [2024-11-19 20:41:19,606 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 110 [2024-11-19 20:41:19,632 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 20:41:19,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 409 treesize of output 367 [2024-11-19 20:41:19,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2024-11-19 20:41:19,875 INFO L349 Elim1Store]: treesize reduction 16, result has 61.9 percent of original size [2024-11-19 20:41:19,876 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 141 treesize of output 154 [2024-11-19 20:41:19,890 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 20:41:19,891 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 13 [2024-11-19 20:41:20,048 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 20:41:20,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 72 treesize of output 62 [2024-11-19 20:41:20,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [231468730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 20:41:20,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 20:41:20,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 28] total 58 [2024-11-19 20:41:20,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562083897] [2024-11-19 20:41:20,177 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 20:41:20,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-19 20:41:20,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 20:41:20,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-19 20:41:20,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=4094, Unknown=0, NotChecked=0, Total=4290 [2024-11-19 20:41:20,184 INFO L87 Difference]: Start difference. First operand 126 states and 155 transitions. Second operand has 58 states, 47 states have (on average 1.8085106382978724) internal successors, (85), 42 states have internal predecessors, (85), 16 states have call successors, (18), 10 states have call predecessors, (18), 15 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2024-11-19 20:41:27,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 20:41:27,290 INFO L93 Difference]: Finished difference Result 324 states and 398 transitions. [2024-11-19 20:41:27,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-19 20:41:27,292 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 47 states have (on average 1.8085106382978724) internal successors, (85), 42 states have internal predecessors, (85), 16 states have call successors, (18), 10 states have call predecessors, (18), 15 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) Word has length 63 [2024-11-19 20:41:27,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 20:41:27,300 INFO L225 Difference]: With dead ends: 324 [2024-11-19 20:41:27,301 INFO L226 Difference]: Without dead ends: 240 [2024-11-19 20:41:27,310 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2672 ImplicationChecksByTransitivity, 7.8s TimeCoverageRelationStatistics Valid=988, Invalid=11894, Unknown=0, NotChecked=0, Total=12882 [2024-11-19 20:41:27,312 INFO L432 NwaCegarLoop]: 53 mSDtfsCounter, 620 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 4029 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 620 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 4294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 4029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-19 20:41:27,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [620 Valid, 1443 Invalid, 4294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 4029 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-19 20:41:27,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2024-11-19 20:41:27,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 171. [2024-11-19 20:41:27,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 126 states have (on average 1.2142857142857142) internal successors, (153), 131 states have internal predecessors, (153), 23 states have call successors, (23), 14 states have call predecessors, (23), 19 states have return successors, (40), 25 states have call predecessors, (40), 23 states have call successors, (40) [2024-11-19 20:41:27,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 216 transitions. [2024-11-19 20:41:27,362 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 216 transitions. Word has length 63 [2024-11-19 20:41:27,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 20:41:27,363 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 216 transitions. [2024-11-19 20:41:27,363 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 47 states have (on average 1.8085106382978724) internal successors, (85), 42 states have internal predecessors, (85), 16 states have call successors, (18), 10 states have call predecessors, (18), 15 states have return successors, (16), 15 states have call predecessors, (16), 14 states have call successors, (16) [2024-11-19 20:41:27,364 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 216 transitions. [2024-11-19 20:41:27,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-19 20:41:27,368 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 20:41:27,368 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 20:41:27,379 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 20:41:27,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:41:27,569 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 20:41:27,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 20:41:27,570 INFO L85 PathProgramCache]: Analyzing trace with hash 2102607608, now seen corresponding path program 1 times [2024-11-19 20:41:27,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 20:41:27,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004815295] [2024-11-19 20:41:27,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:41:27,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 20:41:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:27,746 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 20:41:27,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:27,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 20:41:27,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:27,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-19 20:41:27,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:27,823 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 20:41:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:27,868 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 20:41:27,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:27,908 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-19 20:41:27,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:27,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 20:41:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:27,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 20:41:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:27,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2024-11-19 20:41:27,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:27,923 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 20:41:27,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 20:41:27,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004815295] [2024-11-19 20:41:27,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004815295] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 20:41:27,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [846137820] [2024-11-19 20:41:27,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:41:27,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:41:27,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 20:41:27,927 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 20:41:27,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 20:41:28,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:28,063 INFO L255 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-19 20:41:28,066 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 20:41:28,469 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-19 20:41:28,470 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 20:41:28,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [846137820] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 20:41:28,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 20:41:28,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2024-11-19 20:41:28,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423210890] [2024-11-19 20:41:28,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 20:41:28,473 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 20:41:28,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 20:41:28,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 20:41:28,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2024-11-19 20:41:28,474 INFO L87 Difference]: Start difference. First operand 171 states and 216 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-19 20:41:28,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 20:41:28,959 INFO L93 Difference]: Finished difference Result 371 states and 460 transitions. [2024-11-19 20:41:28,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 20:41:28,961 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) Word has length 72 [2024-11-19 20:41:28,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 20:41:28,963 INFO L225 Difference]: With dead ends: 371 [2024-11-19 20:41:28,963 INFO L226 Difference]: Without dead ends: 196 [2024-11-19 20:41:28,964 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2024-11-19 20:41:28,965 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 175 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 20:41:28,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 213 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 20:41:28,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2024-11-19 20:41:28,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 152. [2024-11-19 20:41:28,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 113 states have (on average 1.1946902654867257) internal successors, (135), 118 states have internal predecessors, (135), 19 states have call successors, (19), 13 states have call predecessors, (19), 17 states have return successors, (29), 20 states have call predecessors, (29), 19 states have call successors, (29) [2024-11-19 20:41:28,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 183 transitions. [2024-11-19 20:41:28,997 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 183 transitions. Word has length 72 [2024-11-19 20:41:28,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 20:41:28,997 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 183 transitions. [2024-11-19 20:41:28,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 4 states have call successors, (10), 4 states have call predecessors, (10), 5 states have return successors, (9), 4 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-19 20:41:28,997 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 183 transitions. [2024-11-19 20:41:28,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-19 20:41:28,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 20:41:28,998 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 20:41:29,010 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 20:41:29,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:41:29,199 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 20:41:29,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 20:41:29,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1485354123, now seen corresponding path program 1 times [2024-11-19 20:41:29,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 20:41:29,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366931332] [2024-11-19 20:41:29,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:41:29,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 20:41:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:30,321 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-19 20:41:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:30,416 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 20:41:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:30,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-19 20:41:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:31,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-19 20:41:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:31,054 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-19 20:41:31,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:31,058 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-19 20:41:31,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:31,128 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-19 20:41:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:31,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2024-11-19 20:41:31,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:31,415 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 20:41:31,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 20:41:31,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366931332] [2024-11-19 20:41:31,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366931332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 20:41:31,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018367558] [2024-11-19 20:41:31,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 20:41:31,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 20:41:31,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 20:41:31,417 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 20:41:31,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 20:41:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 20:41:31,560 INFO L255 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 160 conjuncts are in the unsatisfiable core [2024-11-19 20:41:31,565 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 20:41:31,765 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-19 20:41:31,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-19 20:41:31,960 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-19 20:41:31,961 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-19 20:41:32,685 INFO L349 Elim1Store]: treesize reduction 90, result has 37.1 percent of original size [2024-11-19 20:41:32,686 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 77 treesize of output 109 [2024-11-19 20:41:32,776 INFO L349 Elim1Store]: treesize reduction 39, result has 48.7 percent of original size [2024-11-19 20:41:32,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 82 [2024-11-19 20:41:32,854 INFO L349 Elim1Store]: treesize reduction 34, result has 50.7 percent of original size [2024-11-19 20:41:32,855 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 55 treesize of output 82 [2024-11-19 20:41:32,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2024-11-19 20:41:32,959 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 20:41:32,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 34 [2024-11-19 20:41:33,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2024-11-19 20:41:33,068 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-19 20:41:33,135 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-19 20:41:33,203 INFO L349 Elim1Store]: treesize reduction 28, result has 49.1 percent of original size [2024-11-19 20:41:33,204 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 40 [2024-11-19 20:41:33,374 INFO L349 Elim1Store]: treesize reduction 38, result has 58.7 percent of original size [2024-11-19 20:41:33,374 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 133 treesize of output 169 [2024-11-19 20:41:34,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:41:34,363 INFO L349 Elim1Store]: treesize reduction 4, result has 81.0 percent of original size [2024-11-19 20:41:34,363 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 32 [2024-11-19 20:41:34,401 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:41:34,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 20:41:34,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:41:34,557 INFO L349 Elim1Store]: treesize reduction 10, result has 78.7 percent of original size [2024-11-19 20:41:34,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 50 treesize of output 70 [2024-11-19 20:41:34,673 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-11-19 20:41:34,673 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 7 [2024-11-19 20:41:34,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:41:34,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 7 [2024-11-19 20:41:34,742 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:41:34,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:41:34,750 INFO L349 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2024-11-19 20:41:34,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 10 [2024-11-19 20:41:34,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:41:34,783 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:41:34,784 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:41:34,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2024-11-19 20:41:34,791 WARN L214 Elim1Store]: Array PQE input equivalent to false [2024-11-19 20:41:35,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 90 [2024-11-19 20:41:38,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 20:42:31,160 WARN L286 SmtUtils]: Spent 52.47s on a formula simplification. DAG size of input: 321 DAG size of output: 168 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-19 20:42:31,160 INFO L349 Elim1Store]: treesize reduction 2434, result has 32.6 percent of original size [2024-11-19 20:42:31,162 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 28 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 31 new quantified variables, introduced 53 case distinctions, treesize of input 5180 treesize of output 8349 [2024-11-19 20:42:31,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1914 treesize of output 1778 [2024-11-19 20:42:32,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 674 treesize of output 648