/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.use.bitabs.translation false -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i -------------------------------------------------------------------------------- This is Ultimate 0.2.4-tmp.fs.bitabs-eval-d9c3e40-m [2023-12-16 04:41:09,709 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-16 04:41:09,817 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-12-16 04:41:09,821 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-16 04:41:09,821 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-16 04:41:09,842 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-16 04:41:09,843 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-16 04:41:09,843 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-16 04:41:09,844 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-12-16 04:41:09,846 INFO L153 SettingsManager]: * Use memory slicer=true [2023-12-16 04:41:09,847 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-16 04:41:09,847 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-16 04:41:09,847 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-12-16 04:41:09,848 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-12-16 04:41:09,849 INFO L153 SettingsManager]: * Use SBE=true [2023-12-16 04:41:09,849 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-16 04:41:09,849 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-16 04:41:09,849 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-16 04:41:09,849 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-16 04:41:09,849 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-16 04:41:09,850 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-16 04:41:09,850 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-16 04:41:09,850 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-16 04:41:09,850 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-16 04:41:09,850 INFO L153 SettingsManager]: * Allow undefined functions=false [2023-12-16 04:41:09,850 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-16 04:41:09,851 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-16 04:41:09,851 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-16 04:41:09,851 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-16 04:41:09,851 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-12-16 04:41:09,852 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-12-16 04:41:09,852 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-16 04:41:09,852 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:41:09,853 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-16 04:41:09,853 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-16 04:41:09,853 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-16 04:41:09,853 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-12-16 04:41:09,853 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-16 04:41:09,853 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-16 04:41:09,853 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-12-16 04:41:09,853 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-16 04:41:09,854 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-12-16 04:41:09,854 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-16 04:41:09,854 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Use bitabs translation -> false [2023-12-16 04:41:10,195 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-16 04:41:10,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-16 04:41:10,218 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-16 04:41:10,219 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-16 04:41:10,219 INFO L274 PluginConnector]: CDTParser initialized [2023-12-16 04:41:10,220 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i [2023-12-16 04:41:11,559 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-16 04:41:11,768 INFO L384 CDTParser]: Found 1 translation units. [2023-12-16 04:41:11,768 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i [2023-12-16 04:41:11,783 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25865f769/73219d2980bf458daa27601c7efe0026/FLAG29169211f [2023-12-16 04:41:11,797 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25865f769/73219d2980bf458daa27601c7efe0026 [2023-12-16 04:41:11,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-16 04:41:11,800 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-12-16 04:41:11,802 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-16 04:41:11,802 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-16 04:41:11,806 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-16 04:41:11,806 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:41:11" (1/1) ... [2023-12-16 04:41:11,807 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67a2f791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:11, skipping insertion in model container [2023-12-16 04:41:11,807 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 04:41:11" (1/1) ... [2023-12-16 04:41:11,860 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-16 04:41:12,129 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i[25842,25855] [2023-12-16 04:41:12,136 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i[25967,25980] [2023-12-16 04:41:12,137 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i[26082,26095] [2023-12-16 04:41:12,139 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:41:12,155 INFO L202 MainTranslator]: Completed pre-run [2023-12-16 04:41:12,209 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i[25842,25855] [2023-12-16 04:41:12,210 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i[25967,25980] [2023-12-16 04:41:12,213 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-sets/test_mutex_double_unlock.i[26082,26095] [2023-12-16 04:41:12,216 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-16 04:41:12,269 INFO L206 MainTranslator]: Completed translation [2023-12-16 04:41:12,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:12 WrapperNode [2023-12-16 04:41:12,270 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-16 04:41:12,270 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-16 04:41:12,271 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-16 04:41:12,271 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-16 04:41:12,275 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:12" (1/1) ... [2023-12-16 04:41:12,291 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:12" (1/1) ... [2023-12-16 04:41:12,311 INFO L138 Inliner]: procedures = 139, calls = 57, calls flagged for inlining = 14, calls inlined = 13, statements flattened = 140 [2023-12-16 04:41:12,311 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-16 04:41:12,312 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-16 04:41:12,312 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-16 04:41:12,312 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-16 04:41:12,320 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:12" (1/1) ... [2023-12-16 04:41:12,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:12" (1/1) ... [2023-12-16 04:41:12,324 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:12" (1/1) ... [2023-12-16 04:41:12,352 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]. [2023-12-16 04:41:12,353 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:12" (1/1) ... [2023-12-16 04:41:12,353 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:12" (1/1) ... [2023-12-16 04:41:12,363 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:12" (1/1) ... [2023-12-16 04:41:12,365 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:12" (1/1) ... [2023-12-16 04:41:12,367 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:12" (1/1) ... [2023-12-16 04:41:12,368 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:12" (1/1) ... [2023-12-16 04:41:12,370 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-16 04:41:12,371 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-16 04:41:12,371 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-16 04:41:12,371 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-16 04:41:12,371 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:12" (1/1) ... [2023-12-16 04:41:12,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-12-16 04:41:12,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:41:12,401 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) [2023-12-16 04:41:12,407 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 [2023-12-16 04:41:12,425 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2023-12-16 04:41:12,426 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2023-12-16 04:41:12,426 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2023-12-16 04:41:12,426 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2023-12-16 04:41:12,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-16 04:41:12,426 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2023-12-16 04:41:12,426 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2023-12-16 04:41:12,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-16 04:41:12,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-12-16 04:41:12,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-12-16 04:41:12,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_in_set [2023-12-16 04:41:12,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_in_set [2023-12-16 04:41:12,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-12-16 04:41:12,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-12-16 04:41:12,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-16 04:41:12,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-12-16 04:41:12,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-12-16 04:41:12,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-12-16 04:41:12,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-12-16 04:41:12,427 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_successful_malloc [2023-12-16 04:41:12,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_successful_malloc [2023-12-16 04:41:12,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-16 04:41:12,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-16 04:41:12,526 INFO L241 CfgBuilder]: Building ICFG [2023-12-16 04:41:12,528 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-16 04:41:12,756 INFO L282 CfgBuilder]: Performing block encoding [2023-12-16 04:41:12,843 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-16 04:41:12,843 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-16 04:41:12,844 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:41:12 BoogieIcfgContainer [2023-12-16 04:41:12,844 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-16 04:41:12,845 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-16 04:41:12,845 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-16 04:41:12,847 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-16 04:41:12,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 04:41:11" (1/3) ... [2023-12-16 04:41:12,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476f4110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:41:12, skipping insertion in model container [2023-12-16 04:41:12,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 04:41:12" (2/3) ... [2023-12-16 04:41:12,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476f4110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 04:41:12, skipping insertion in model container [2023-12-16 04:41:12,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 04:41:12" (3/3) ... [2023-12-16 04:41:12,855 INFO L112 eAbstractionObserver]: Analyzing ICFG test_mutex_double_unlock.i [2023-12-16 04:41:12,869 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-16 04:41:12,869 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-12-16 04:41:12,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-16 04:41:12,905 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@477cdf3c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-16 04:41:12,905 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-12-16 04:41:12,925 INFO L276 IsEmpty]: Start isEmpty. Operand has 55 states, 35 states have (on average 1.4) internal successors, (49), 38 states have internal predecessors, (49), 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) [2023-12-16 04:41:12,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-16 04:41:12,932 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:41:12,932 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:41:12,933 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:41:12,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:41:12,937 INFO L85 PathProgramCache]: Analyzing trace with hash 771595544, now seen corresponding path program 1 times [2023-12-16 04:41:12,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:41:12,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693577887] [2023-12-16 04:41:12,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:41:12,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:41:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:13,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 04:41:13,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:13,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 04:41:13,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:13,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 04:41:13,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:13,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 04:41:13,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:41:13,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693577887] [2023-12-16 04:41:13,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693577887] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:41:13,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:41:13,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-16 04:41:13,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414941173] [2023-12-16 04:41:13,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:41:13,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-16 04:41:13,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:41:13,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-16 04:41:13,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-16 04:41:13,358 INFO L87 Difference]: Start difference. First operand has 55 states, 35 states have (on average 1.4) internal successors, (49), 38 states have internal predecessors, (49), 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 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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) [2023-12-16 04:41:13,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:41:13,509 INFO L93 Difference]: Finished difference Result 115 states and 161 transitions. [2023-12-16 04:41:13,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-16 04:41:13,511 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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 24 [2023-12-16 04:41:13,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:41:13,519 INFO L225 Difference]: With dead ends: 115 [2023-12-16 04:41:13,519 INFO L226 Difference]: Without dead ends: 60 [2023-12-16 04:41:13,523 INFO L412 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 [2023-12-16 04:41:13,527 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 29 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:41:13,528 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 43 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:41:13,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-12-16 04:41:13,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2023-12-16 04:41:13,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.2058823529411764) internal successors, (41), 36 states have internal predecessors, (41), 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) [2023-12-16 04:41:13,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2023-12-16 04:41:13,571 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 24 [2023-12-16 04:41:13,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:41:13,574 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2023-12-16 04:41:13,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 2 states have internal predecessors, (14), 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) [2023-12-16 04:41:13,574 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2023-12-16 04:41:13,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-16 04:41:13,575 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:41:13,575 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:41:13,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-16 04:41:13,576 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:41:13,577 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:41:13,577 INFO L85 PathProgramCache]: Analyzing trace with hash -85566308, now seen corresponding path program 1 times [2023-12-16 04:41:13,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:41:13,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230726801] [2023-12-16 04:41:13,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:41:13,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:41:13,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:13,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 04:41:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:13,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 04:41:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:13,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 04:41:13,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:13,810 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 04:41:13,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:41:13,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230726801] [2023-12-16 04:41:13,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230726801] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:41:13,814 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:41:13,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-16 04:41:13,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997730503] [2023-12-16 04:41:13,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:41:13,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-12-16 04:41:13,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:41:13,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-12-16 04:41:13,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-12-16 04:41:13,816 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-12-16 04:41:13,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:41:13,971 INFO L93 Difference]: Finished difference Result 66 states and 82 transitions. [2023-12-16 04:41:13,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-12-16 04:41:13,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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 24 [2023-12-16 04:41:13,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:41:13,974 INFO L225 Difference]: With dead ends: 66 [2023-12-16 04:41:13,974 INFO L226 Difference]: Without dead ends: 64 [2023-12-16 04:41:13,975 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-12-16 04:41:13,976 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 32 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-16 04:41:13,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 94 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-16 04:41:13,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2023-12-16 04:41:13,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2023-12-16 04:41:13,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 39 states have internal predecessors, (44), 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) [2023-12-16 04:41:13,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2023-12-16 04:41:13,999 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 24 [2023-12-16 04:41:13,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:41:13,999 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2023-12-16 04:41:14,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-12-16 04:41:14,000 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2023-12-16 04:41:14,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-12-16 04:41:14,000 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:41:14,000 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-16 04:41:14,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-16 04:41:14,001 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:41:14,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:41:14,001 INFO L85 PathProgramCache]: Analyzing trace with hash 1489036997, now seen corresponding path program 1 times [2023-12-16 04:41:14,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:41:14,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123369558] [2023-12-16 04:41:14,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:41:14,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:41:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:14,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 04:41:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:14,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 04:41:14,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:14,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-12-16 04:41:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:14,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-12-16 04:41:14,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:41:14,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123369558] [2023-12-16 04:41:14,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123369558] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:41:14,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-16 04:41:14,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-12-16 04:41:14,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148960399] [2023-12-16 04:41:14,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:41:14,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-16 04:41:14,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:41:14,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-16 04:41:14,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:41:14,293 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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) [2023-12-16 04:41:14,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:41:14,673 INFO L93 Difference]: Finished difference Result 172 states and 225 transitions. [2023-12-16 04:41:14,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-12-16 04:41:14,673 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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 24 [2023-12-16 04:41:14,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:41:14,678 INFO L225 Difference]: With dead ends: 172 [2023-12-16 04:41:14,679 INFO L226 Difference]: Without dead ends: 121 [2023-12-16 04:41:14,681 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-12-16 04:41:14,683 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 119 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-16 04:41:14,685 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 103 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-16 04:41:14,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-12-16 04:41:14,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 102. [2023-12-16 04:41:14,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 68 states have (on average 1.2352941176470589) internal successors, (84), 74 states have internal predecessors, (84), 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) [2023-12-16 04:41:14,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 131 transitions. [2023-12-16 04:41:14,708 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 131 transitions. Word has length 24 [2023-12-16 04:41:14,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:41:14,708 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 131 transitions. [2023-12-16 04:41:14,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 5 states have internal predecessors, (14), 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) [2023-12-16 04:41:14,709 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 131 transitions. [2023-12-16 04:41:14,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-12-16 04:41:14,711 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:41:14,711 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 04:41:14,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-16 04:41:14,711 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:41:14,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:41:14,712 INFO L85 PathProgramCache]: Analyzing trace with hash -97933331, now seen corresponding path program 1 times [2023-12-16 04:41:14,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:41:14,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392916287] [2023-12-16 04:41:14,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:41:14,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:41:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:16,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 04:41:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:16,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 04:41:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:16,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 04:41:16,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:17,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 04:41:17,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:17,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 04:41:17,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:17,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-16 04:41:17,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:17,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-16 04:41:17,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:17,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 04:41:17,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:18,126 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-12-16 04:41:18,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:41:18,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392916287] [2023-12-16 04:41:18,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392916287] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:41:18,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064978434] [2023-12-16 04:41:18,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:41:18,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:41:18,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:41:18,141 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:41:18,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-12-16 04:41:18,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:18,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 150 conjunts are in the unsatisfiable core [2023-12-16 04:41:18,391 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:41:18,644 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-12-16 04:41:18,644 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 [2023-12-16 04:41:18,873 INFO L349 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-12-16 04:41:18,875 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 22 treesize of output 33 [2023-12-16 04:41:19,556 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 11 treesize of output 7 [2023-12-16 04:41:19,690 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 04:41:19,702 INFO L349 Elim1Store]: treesize reduction 14, result has 39.1 percent of original size [2023-12-16 04:41:19,703 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 1 case distinctions, treesize of input 15 treesize of output 18 [2023-12-16 04:41:19,718 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 [2023-12-16 04:41:19,831 INFO L349 Elim1Store]: treesize reduction 177, result has 36.1 percent of original size [2023-12-16 04:41:19,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 3 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 116 treesize of output 252 [2023-12-16 04:41:19,842 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 [2023-12-16 04:41:19,861 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 [2023-12-16 04:41:19,895 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 [2023-12-16 04:41:19,911 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 [2023-12-16 04:41:20,269 INFO L349 Elim1Store]: treesize reduction 83, result has 30.3 percent of original size [2023-12-16 04:41:20,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 353 treesize of output 336 [2023-12-16 04:41:20,669 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 04:41:20,670 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 49 treesize of output 15 [2023-12-16 04:41:20,683 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 04:41:20,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 0 case distinctions, treesize of input 49 treesize of output 15 [2023-12-16 04:41:20,736 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 [2023-12-16 04:41:20,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 135 [2023-12-16 04:41:20,930 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 [2023-12-16 04:41:21,887 INFO L349 Elim1Store]: treesize reduction 282, result has 22.5 percent of original size [2023-12-16 04:41:21,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 201 treesize of output 96 [2023-12-16 04:41:23,444 INFO L349 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2023-12-16 04:41:23,445 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 37 [2023-12-16 04:41:26,092 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-16 04:41:26,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-12-16 04:41:27,142 INFO L349 Elim1Store]: treesize reduction 13, result has 69.0 percent of original size [2023-12-16 04:41:27,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 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 [2023-12-16 04:41:27,209 INFO L349 Elim1Store]: treesize reduction 38, result has 56.8 percent of original size [2023-12-16 04:41:27,209 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 4 new quantified variables, introduced 7 case distinctions, treesize of input 165 treesize of output 190 [2023-12-16 04:41:27,231 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:41:27,231 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 297 treesize of output 269 [2023-12-16 04:41:27,268 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 1 [2023-12-16 04:41:27,354 INFO L349 Elim1Store]: treesize reduction 16, result has 66.7 percent of original size [2023-12-16 04:41:27,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 148 treesize of output 182 [2023-12-16 04:41:27,985 INFO L349 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2023-12-16 04:41:27,985 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 3 case distinctions, treesize of input 44 treesize of output 30 [2023-12-16 04:41:28,014 INFO L349 Elim1Store]: treesize reduction 17, result has 37.0 percent of original size [2023-12-16 04:41:28,015 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 3 case distinctions, treesize of input 44 treesize of output 30 [2023-12-16 04:41:28,031 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:41:28,032 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 43 treesize of output 47 [2023-12-16 04:41:28,062 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-12-16 04:41:28,062 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 220 treesize of output 176 [2023-12-16 04:41:28,152 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 8 treesize of output 4 [2023-12-16 04:41:28,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064978434] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:41:28,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-12-16 04:41:28,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 28] total 58 [2023-12-16 04:41:28,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032676014] [2023-12-16 04:41:28,233 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-12-16 04:41:28,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2023-12-16 04:41:28,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:41:28,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2023-12-16 04:41:28,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=3849, Unknown=91, NotChecked=0, Total=4160 [2023-12-16 04:41:28,239 INFO L87 Difference]: Start difference. First operand 102 states and 131 transitions. Second operand has 58 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 42 states have internal predecessors, (70), 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) [2023-12-16 04:41:37,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:41:37,606 INFO L93 Difference]: Finished difference Result 248 states and 309 transitions. [2023-12-16 04:41:37,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-12-16 04:41:37,607 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 42 states have internal predecessors, (70), 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 55 [2023-12-16 04:41:37,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:41:37,609 INFO L225 Difference]: With dead ends: 248 [2023-12-16 04:41:37,609 INFO L226 Difference]: Without dead ends: 178 [2023-12-16 04:41:37,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2395 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=932, Invalid=11154, Unknown=124, NotChecked=0, Total=12210 [2023-12-16 04:41:37,613 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 513 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 3906 mSolverCounterSat, 218 mSolverCounterUnsat, 139 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 4263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 3906 IncrementalHoareTripleChecker+Invalid, 139 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-12-16 04:41:37,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 881 Invalid, 4263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 3906 Invalid, 139 Unknown, 0 Unchecked, 3.9s Time] [2023-12-16 04:41:37,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-12-16 04:41:37,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 135. [2023-12-16 04:41:37,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 95 states have (on average 1.2526315789473683) internal successors, (119), 100 states have internal predecessors, (119), 20 states have call successors, (20), 13 states have call predecessors, (20), 17 states have return successors, (32), 21 states have call predecessors, (32), 20 states have call successors, (32) [2023-12-16 04:41:37,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 171 transitions. [2023-12-16 04:41:37,633 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 171 transitions. Word has length 55 [2023-12-16 04:41:37,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:41:37,633 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 171 transitions. [2023-12-16 04:41:37,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 38 states have (on average 1.8421052631578947) internal successors, (70), 42 states have internal predecessors, (70), 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) [2023-12-16 04:41:37,633 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 171 transitions. [2023-12-16 04:41:37,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-12-16 04:41:37,639 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:41:37,640 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 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] [2023-12-16 04:41:37,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-12-16 04:41:37,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:41:37,846 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:41:37,846 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:41:37,846 INFO L85 PathProgramCache]: Analyzing trace with hash -946371460, now seen corresponding path program 1 times [2023-12-16 04:41:37,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:41:37,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973101672] [2023-12-16 04:41:37,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:41:37,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:41:37,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:37,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 04:41:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:37,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 04:41:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:37,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 04:41:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:37,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 04:41:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:37,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 04:41:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:37,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-12-16 04:41:38,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:38,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 04:41:38,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:38,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 04:41:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:38,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-12-16 04:41:38,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:38,009 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-12-16 04:41:38,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:41:38,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973101672] [2023-12-16 04:41:38,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973101672] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:41:38,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385945287] [2023-12-16 04:41:38,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:41:38,009 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:41:38,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:41:38,025 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-12-16 04:41:38,032 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-12-16 04:41:38,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:38,151 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 5 conjunts are in the unsatisfiable core [2023-12-16 04:41:38,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:41:38,170 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-12-16 04:41:38,170 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-12-16 04:41:38,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385945287] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-16 04:41:38,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-12-16 04:41:38,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2023-12-16 04:41:38,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686389108] [2023-12-16 04:41:38,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-16 04:41:38,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-12-16 04:41:38,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-12-16 04:41:38,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-12-16 04:41:38,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:41:38,171 INFO L87 Difference]: Start difference. First operand 135 states and 171 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (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) [2023-12-16 04:41:38,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-16 04:41:38,217 INFO L93 Difference]: Finished difference Result 244 states and 311 transitions. [2023-12-16 04:41:38,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-12-16 04:41:38,218 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (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 66 [2023-12-16 04:41:38,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-16 04:41:38,220 INFO L225 Difference]: With dead ends: 244 [2023-12-16 04:41:38,220 INFO L226 Difference]: Without dead ends: 145 [2023-12-16 04:41:38,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-12-16 04:41:38,221 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 0 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-16 04:41:38,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 158 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-16 04:41:38,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2023-12-16 04:41:38,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 137. [2023-12-16 04:41:38,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 96 states have (on average 1.2395833333333333) internal successors, (119), 101 states have internal predecessors, (119), 20 states have call successors, (20), 13 states have call predecessors, (20), 18 states have return successors, (33), 22 states have call predecessors, (33), 20 states have call successors, (33) [2023-12-16 04:41:38,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 172 transitions. [2023-12-16 04:41:38,252 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 172 transitions. Word has length 66 [2023-12-16 04:41:38,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-16 04:41:38,253 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 172 transitions. [2023-12-16 04:41:38,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 2 states have call successors, (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) [2023-12-16 04:41:38,253 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 172 transitions. [2023-12-16 04:41:38,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-12-16 04:41:38,254 INFO L187 NwaCegarLoop]: Found error trace [2023-12-16 04:41:38,255 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-12-16 04:41:38,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-12-16 04:41:38,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:41:38,493 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION === [mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION, mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-12-16 04:41:38,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-16 04:41:38,493 INFO L85 PathProgramCache]: Analyzing trace with hash 49680093, now seen corresponding path program 1 times [2023-12-16 04:41:38,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-12-16 04:41:38,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822589486] [2023-12-16 04:41:38,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:41:38,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-16 04:41:38,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:39,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 04:41:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:39,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-12-16 04:41:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:39,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-12-16 04:41:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:40,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-12-16 04:41:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:40,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-12-16 04:41:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:40,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-12-16 04:41:40,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:40,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-12-16 04:41:40,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:40,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-12-16 04:41:40,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:40,743 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-12-16 04:41:40,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-12-16 04:41:40,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822589486] [2023-12-16 04:41:40,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822589486] provided 0 perfect and 1 imperfect interpolant sequences [2023-12-16 04:41:40,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [337713934] [2023-12-16 04:41:40,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-16 04:41:40,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-12-16 04:41:40,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-12-16 04:41:40,764 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) [2023-12-16 04:41:40,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-12-16 04:41:40,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-16 04:41:40,986 INFO L262 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 158 conjunts are in the unsatisfiable core [2023-12-16 04:41:40,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-12-16 04:41:41,178 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-16 04:41:41,179 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 [2023-12-16 04:41:41,403 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2023-12-16 04:41:41,403 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 [2023-12-16 04:41:42,538 INFO L349 Elim1Store]: treesize reduction 182, result has 37.9 percent of original size [2023-12-16 04:41:42,538 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 11 case distinctions, treesize of input 434 treesize of output 357 [2023-12-16 04:41:42,613 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 [2023-12-16 04:41:42,677 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 [2023-12-16 04:41:42,931 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 04:41:42,951 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 04:41:42,952 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 95 [2023-12-16 04:41:43,087 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 04:41:43,094 INFO L173 IndexEqualityManager]: detected equality via solver [2023-12-16 04:41:43,116 INFO L349 Elim1Store]: treesize reduction 42, result has 16.0 percent of original size [2023-12-16 04:41:43,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 290 treesize of output 229 [2023-12-16 04:41:43,397 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 654 treesize of output 591 [2023-12-16 04:41:43,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 04:41:43,772 INFO L349 Elim1Store]: treesize reduction 67, result has 30.2 percent of original size [2023-12-16 04:41:43,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 616 treesize of output 608 [2023-12-16 04:41:43,925 WARN L214 Elim1Store]: Array PQE input equivalent to false [2023-12-16 04:41:44,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-12-16 04:41:44,059 INFO L349 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2023-12-16 04:41:44,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 40 treesize of output 16 [2023-12-16 04:41:45,175 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 302 treesize of output 280 [2023-12-16 04:41:45,224 INFO L349 Elim1Store]: treesize reduction 52, result has 26.8 percent of original size [2023-12-16 04:41:45,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 231 treesize of output 253 [2023-12-16 04:41:45,274 INFO L349 Elim1Store]: treesize reduction 72, result has 27.3 percent of original size [2023-12-16 04:41:45,275 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 234 treesize of output 262 [2023-12-16 04:41:45,284 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 217 treesize of output 215 [2023-12-16 04:41:45,368 INFO L349 Elim1Store]: treesize reduction 72, result has 27.3 percent of original size [2023-12-16 04:41:45,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 215 treesize of output 243 [2023-12-16 04:41:45,378 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 198 treesize of output 196 [2023-12-16 04:41:46,581 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 12 [2023-12-16 04:41:46,628 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 12 [2023-12-16 04:41:46,856 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 12 [2023-12-16 04:41:46,998 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 12 [2023-12-16 04:41:47,006 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 12 [2023-12-16 04:41:47,115 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 12 [2023-12-16 04:41:47,177 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 697 treesize of output 673 Received shutdown request... [2023-12-16 04:42:19,908 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:42:19,916 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-12-16 04:42:20,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-12-16 04:42:21,109 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forcibly destroying the process [2023-12-16 04:42:21,125 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location mutex_lockErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-12-16 04:42:21,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-12-16 04:42:21,125 WARN L619 AbstractCegarLoop]: Verification canceled: while NwaCegarLoop was analyzing trace of length 58 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while executing Executor. [2023-12-16 04:42:21,126 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location mutex_unlockErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-12-16 04:42:21,126 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-12-16 04:42:21,128 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-12-16 04:42:21,130 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2023-12-16 04:42:21,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 04:42:21 BoogieIcfgContainer [2023-12-16 04:42:21,131 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-12-16 04:42:21,131 INFO L158 Benchmark]: Toolchain (without parser) took 69331.25ms. Allocated memory was 294.6MB in the beginning and 684.7MB in the end (delta: 390.1MB). Free memory was 242.5MB in the beginning and 513.6MB in the end (delta: -271.1MB). Peak memory consumption was 395.8MB. Max. memory is 8.0GB. [2023-12-16 04:42:21,131 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 170.9MB. Free memory was 118.0MB in the beginning and 117.9MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 8.0GB. [2023-12-16 04:42:21,132 INFO L158 Benchmark]: CACSL2BoogieTranslator took 467.73ms. Allocated memory is still 294.6MB. Free memory was 242.5MB in the beginning and 222.0MB in the end (delta: 20.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-12-16 04:42:21,141 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.93ms. Allocated memory is still 294.6MB. Free memory was 222.0MB in the beginning and 219.4MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-12-16 04:42:21,141 INFO L158 Benchmark]: Boogie Preprocessor took 58.20ms. Allocated memory is still 294.6MB. Free memory was 219.4MB in the beginning and 214.7MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2023-12-16 04:42:21,142 INFO L158 Benchmark]: RCFGBuilder took 473.31ms. Allocated memory is still 294.6MB. Free memory was 214.7MB in the beginning and 257.4MB in the end (delta: -42.6MB). Peak memory consumption was 30.2MB. Max. memory is 8.0GB. [2023-12-16 04:42:21,142 INFO L158 Benchmark]: TraceAbstraction took 68285.99ms. Allocated memory was 294.6MB in the beginning and 684.7MB in the end (delta: 390.1MB). Free memory was 256.9MB in the beginning and 513.6MB in the end (delta: -256.7MB). Peak memory consumption was 409.6MB. Max. memory is 8.0GB. [2023-12-16 04:42:21,147 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 170.9MB. Free memory was 118.0MB in the beginning and 117.9MB in the end (delta: 151.0kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 467.73ms. Allocated memory is still 294.6MB. Free memory was 242.5MB in the beginning and 222.0MB in the end (delta: 20.5MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.93ms. Allocated memory is still 294.6MB. Free memory was 222.0MB in the beginning and 219.4MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 58.20ms. Allocated memory is still 294.6MB. Free memory was 219.4MB in the beginning and 214.7MB in the end (delta: 4.7MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 473.31ms. Allocated memory is still 294.6MB. Free memory was 214.7MB in the beginning and 257.4MB in the end (delta: -42.6MB). Peak memory consumption was 30.2MB. Max. memory is 8.0GB. * TraceAbstraction took 68285.99ms. Allocated memory was 294.6MB in the beginning and 684.7MB in the end (delta: 390.1MB). Free memory was 256.9MB in the beginning and 513.6MB in the end (delta: -256.7MB). Peak memory consumption was 409.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 669]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 669). Cancelled while NwaCegarLoop was analyzing trace of length 58 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 673]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 673). Cancelled while NwaCegarLoop was analyzing trace of length 58 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while executing Executor. - TimeoutResultAtElement [Line: 677]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable (line 677). Cancelled while NwaCegarLoop was analyzing trace of length 58 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 55 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 68.2s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 139 mSolverCounterUnknown, 709 SdHoareTripleChecker+Valid, 4.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 693 mSDsluCounter, 1279 SdHoareTripleChecker+Invalid, 3.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1082 mSDsCounter, 267 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4374 IncrementalHoareTripleChecker+Invalid, 4780 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 267 mSolverCounterUnsat, 197 mSDtfsCounter, 4374 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 284 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2415 ImplicationChecksByTransitivity, 10.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=137occurred in iteration=5, InterpolantAutomatonStates: 73, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 84 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 14.0s InterpolantComputationTime, 314 NumberOfCodeBlocks, 314 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 307 ConstructedInterpolants, 16 QuantifiedInterpolants, 12537 SizeOfPredicates, 45 NumberOfNonLiveVariables, 781 ConjunctsInSsa, 155 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 162/198 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown [2023-12-16 04:42:21,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 137