/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 08:14:16,120 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 08:14:16,186 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 08:14:16,190 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 08:14:16,190 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 08:14:16,214 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 08:14:16,214 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 08:14:16,217 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 08:14:16,218 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 08:14:16,220 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 08:14:16,221 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 08:14:16,221 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 08:14:16,221 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 08:14:16,222 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 08:14:16,222 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 08:14:16,222 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 08:14:16,222 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 08:14:16,223 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 08:14:16,223 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 08:14:16,223 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 08:14:16,223 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 08:14:16,224 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 08:14:16,224 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 08:14:16,224 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 08:14:16,224 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 08:14:16,224 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 08:14:16,225 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 08:14:16,225 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 08:14:16,225 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 08:14:16,225 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 08:14:16,226 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 08:14:16,226 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 08:14:16,226 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 08:14:16,226 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 08:14:16,226 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 08:14:16,227 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 08:14:16,460 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 08:14:16,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 08:14:16,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 08:14:16,477 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 08:14:16,478 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 08:14:16,479 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2023-08-24 08:14:17,396 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 08:14:17,531 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 08:14:17,532 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2023-08-24 08:14:17,537 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d113e5384/b7e77fb8a9344ae3ba824c39c3e2d898/FLAGbdea5af16 [2023-08-24 08:14:17,546 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d113e5384/b7e77fb8a9344ae3ba824c39c3e2d898 [2023-08-24 08:14:17,549 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 08:14:17,550 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 08:14:17,551 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 08:14:17,551 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 08:14:17,553 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 08:14:17,553 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 08:14:17" (1/1) ... [2023-08-24 08:14:17,554 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f7884e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:17, skipping insertion in model container [2023-08-24 08:14:17,554 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 08:14:17" (1/1) ... [2023-08-24 08:14:17,568 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 08:14:17,662 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c[2554,2567] [2023-08-24 08:14:17,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 08:14:17,669 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 08:14:17,695 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c[2554,2567] [2023-08-24 08:14:17,696 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 08:14:17,709 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 08:14:17,709 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 08:14:17,713 INFO L206 MainTranslator]: Completed translation [2023-08-24 08:14:17,714 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:17 WrapperNode [2023-08-24 08:14:17,714 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 08:14:17,715 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 08:14:17,715 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 08:14:17,715 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 08:14:17,720 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:17" (1/1) ... [2023-08-24 08:14:17,731 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:17" (1/1) ... [2023-08-24 08:14:17,748 INFO L138 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2023-08-24 08:14:17,748 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 08:14:17,749 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 08:14:17,749 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 08:14:17,749 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 08:14:17,754 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:17" (1/1) ... [2023-08-24 08:14:17,755 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:17" (1/1) ... [2023-08-24 08:14:17,757 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:17" (1/1) ... [2023-08-24 08:14:17,757 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:17" (1/1) ... [2023-08-24 08:14:17,771 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:17" (1/1) ... [2023-08-24 08:14:17,773 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:17" (1/1) ... [2023-08-24 08:14:17,773 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:17" (1/1) ... [2023-08-24 08:14:17,774 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:17" (1/1) ... [2023-08-24 08:14:17,775 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 08:14:17,776 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 08:14:17,776 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 08:14:17,776 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 08:14:17,776 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:17" (1/1) ... [2023-08-24 08:14:17,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 08:14:17,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:14:17,803 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 08:14:17,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 08:14:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 08:14:17,839 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 08:14:17,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 08:14:17,840 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 08:14:17,840 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 08:14:17,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 08:14:17,840 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 08:14:17,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 08:14:17,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 08:14:17,841 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 08:14:17,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 08:14:17,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 08:14:17,841 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 08:14:17,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 08:14:17,842 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 08:14:17,927 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 08:14:17,928 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 08:14:18,133 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 08:14:18,145 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 08:14:18,145 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-24 08:14:18,147 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 08:14:18 BoogieIcfgContainer [2023-08-24 08:14:18,147 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 08:14:18,148 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 08:14:18,148 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 08:14:18,156 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 08:14:18,156 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 08:14:17" (1/3) ... [2023-08-24 08:14:18,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e760f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 08:14:18, skipping insertion in model container [2023-08-24 08:14:18,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 08:14:17" (2/3) ... [2023-08-24 08:14:18,157 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e760f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 08:14:18, skipping insertion in model container [2023-08-24 08:14:18,157 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 08:14:18" (3/3) ... [2023-08-24 08:14:18,158 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2023-08-24 08:14:18,169 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 08:14:18,170 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 08:14:18,170 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 08:14:18,228 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 08:14:18,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 103 transitions, 222 flow [2023-08-24 08:14:18,287 INFO L124 PetriNetUnfolderBase]: 8/101 cut-off events. [2023-08-24 08:14:18,287 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 08:14:18,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 101 events. 8/101 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-08-24 08:14:18,291 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 103 transitions, 222 flow [2023-08-24 08:14:18,293 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 93 transitions, 198 flow [2023-08-24 08:14:18,295 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 08:14:18,309 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 93 transitions, 198 flow [2023-08-24 08:14:18,314 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 93 transitions, 198 flow [2023-08-24 08:14:18,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 93 transitions, 198 flow [2023-08-24 08:14:18,346 INFO L124 PetriNetUnfolderBase]: 8/93 cut-off events. [2023-08-24 08:14:18,346 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 08:14:18,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 8/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-08-24 08:14:18,348 INFO L119 LiptonReduction]: Number of co-enabled transitions 728 [2023-08-24 08:14:20,434 INFO L134 LiptonReduction]: Checked pairs total: 789 [2023-08-24 08:14:20,435 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-08-24 08:14:20,448 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 08:14:20,453 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2858bb46, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 08:14:20,453 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-24 08:14:20,458 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 08:14:20,458 INFO L124 PetriNetUnfolderBase]: 2/12 cut-off events. [2023-08-24 08:14:20,458 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 08:14:20,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:20,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:20,459 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:20,462 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:20,462 INFO L85 PathProgramCache]: Analyzing trace with hash 285965286, now seen corresponding path program 1 times [2023-08-24 08:14:20,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:20,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159338064] [2023-08-24 08:14:20,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:20,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:20,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:20,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:20,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159338064] [2023-08-24 08:14:20,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159338064] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:14:20,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:14:20,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 08:14:20,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5679326] [2023-08-24 08:14:20,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:14:20,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 08:14:20,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:14:20,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 08:14:20,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 08:14:20,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 197 [2023-08-24 08:14:20,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:20,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:14:20,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 197 [2023-08-24 08:14:20,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:14:20,907 INFO L124 PetriNetUnfolderBase]: 41/77 cut-off events. [2023-08-24 08:14:20,907 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-24 08:14:20,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 77 events. 41/77 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 163 event pairs, 9 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 120. Up to 51 conditions per place. [2023-08-24 08:14:20,910 INFO L140 encePairwiseOnDemand]: 193/197 looper letters, 19 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2023-08-24 08:14:20,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 23 transitions, 113 flow [2023-08-24 08:14:20,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 08:14:20,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 08:14:20,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2023-08-24 08:14:20,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47715736040609136 [2023-08-24 08:14:20,925 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2023-08-24 08:14:20,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2023-08-24 08:14:20,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:14:20,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2023-08-24 08:14:20,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:20,936 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:20,937 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:20,938 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 38 flow. Second operand 3 states and 282 transitions. [2023-08-24 08:14:20,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 23 transitions, 113 flow [2023-08-24 08:14:20,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 23 transitions, 99 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-24 08:14:20,941 INFO L231 Difference]: Finished difference. Result has 17 places, 15 transitions, 49 flow [2023-08-24 08:14:20,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=17, PETRI_TRANSITIONS=15} [2023-08-24 08:14:20,944 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2023-08-24 08:14:20,945 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 15 transitions, 49 flow [2023-08-24 08:14:20,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:20,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:20,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:20,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 08:14:20,946 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:20,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:20,951 INFO L85 PathProgramCache]: Analyzing trace with hash 275674925, now seen corresponding path program 1 times [2023-08-24 08:14:20,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:20,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270849065] [2023-08-24 08:14:20,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:20,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:21,077 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:21,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:21,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270849065] [2023-08-24 08:14:21,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270849065] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:14:21,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:14:21,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 08:14:21,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142269009] [2023-08-24 08:14:21,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:14:21,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 08:14:21,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:14:21,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 08:14:21,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 08:14:21,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2023-08-24 08:14:21,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:21,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:14:21,082 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2023-08-24 08:14:21,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:14:21,159 INFO L124 PetriNetUnfolderBase]: 49/99 cut-off events. [2023-08-24 08:14:21,159 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-24 08:14:21,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 99 events. 49/99 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 273 event pairs, 5 based on Foata normal form. 8/107 useless extension candidates. Maximal degree in co-relation 57. Up to 47 conditions per place. [2023-08-24 08:14:21,160 INFO L140 encePairwiseOnDemand]: 192/197 looper letters, 29 selfloop transitions, 7 changer transitions 2/38 dead transitions. [2023-08-24 08:14:21,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 38 transitions, 189 flow [2023-08-24 08:14:21,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 08:14:21,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 08:14:21,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 421 transitions. [2023-08-24 08:14:21,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42741116751269037 [2023-08-24 08:14:21,164 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 421 transitions. [2023-08-24 08:14:21,164 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 421 transitions. [2023-08-24 08:14:21,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:14:21,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 421 transitions. [2023-08-24 08:14:21,165 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:21,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:21,168 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:21,168 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 49 flow. Second operand 5 states and 421 transitions. [2023-08-24 08:14:21,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 38 transitions, 189 flow [2023-08-24 08:14:21,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 38 transitions, 185 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 08:14:21,169 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 102 flow [2023-08-24 08:14:21,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=102, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2023-08-24 08:14:21,170 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 5 predicate places. [2023-08-24 08:14:21,170 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 102 flow [2023-08-24 08:14:21,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:21,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:21,172 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:21,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 08:14:21,174 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:21,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:21,177 INFO L85 PathProgramCache]: Analyzing trace with hash -1439336439, now seen corresponding path program 2 times [2023-08-24 08:14:21,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:21,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083858930] [2023-08-24 08:14:21,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:21,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:21,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:21,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:21,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083858930] [2023-08-24 08:14:21,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083858930] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:14:21,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:14:21,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 08:14:21,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006076013] [2023-08-24 08:14:21,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:14:21,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 08:14:21,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:14:21,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 08:14:21,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 08:14:21,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2023-08-24 08:14:21,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:21,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:14:21,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2023-08-24 08:14:21,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:14:21,336 INFO L124 PetriNetUnfolderBase]: 45/93 cut-off events. [2023-08-24 08:14:21,336 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2023-08-24 08:14:21,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 93 events. 45/93 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 228 event pairs, 11 based on Foata normal form. 4/97 useless extension candidates. Maximal degree in co-relation 216. Up to 59 conditions per place. [2023-08-24 08:14:21,338 INFO L140 encePairwiseOnDemand]: 193/197 looper letters, 20 selfloop transitions, 6 changer transitions 6/32 dead transitions. [2023-08-24 08:14:21,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 207 flow [2023-08-24 08:14:21,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 08:14:21,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 08:14:21,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 336 transitions. [2023-08-24 08:14:21,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263959390862944 [2023-08-24 08:14:21,339 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 336 transitions. [2023-08-24 08:14:21,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 336 transitions. [2023-08-24 08:14:21,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:14:21,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 336 transitions. [2023-08-24 08:14:21,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:21,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:21,341 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:21,341 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 102 flow. Second operand 4 states and 336 transitions. [2023-08-24 08:14:21,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 207 flow [2023-08-24 08:14:21,344 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 32 transitions, 207 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 08:14:21,345 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 119 flow [2023-08-24 08:14:21,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-08-24 08:14:21,346 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 9 predicate places. [2023-08-24 08:14:21,348 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 119 flow [2023-08-24 08:14:21,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:21,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:21,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:21,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 08:14:21,348 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:21,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:21,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1223174604, now seen corresponding path program 1 times [2023-08-24 08:14:21,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:21,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942851253] [2023-08-24 08:14:21,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:21,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:21,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:21,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:21,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942851253] [2023-08-24 08:14:21,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942851253] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:14:21,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289366578] [2023-08-24 08:14:21,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:21,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:21,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:14:21,438 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) [2023-08-24 08:14:21,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 08:14:21,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:21,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 08:14:21,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:14:21,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:21,713 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:14:21,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:21,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289366578] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:14:21,807 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:14:21,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-24 08:14:21,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491738399] [2023-08-24 08:14:21,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:14:21,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 08:14:21,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:14:21,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 08:14:21,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-24 08:14:21,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 197 [2023-08-24 08:14:21,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 119 flow. Second operand has 7 states, 7 states have (on average 75.71428571428571) internal successors, (530), 7 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:21,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:14:21,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 197 [2023-08-24 08:14:21,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:14:21,941 INFO L124 PetriNetUnfolderBase]: 67/137 cut-off events. [2023-08-24 08:14:21,941 INFO L125 PetriNetUnfolderBase]: For 194/194 co-relation queries the response was YES. [2023-08-24 08:14:21,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 137 events. 67/137 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 400 event pairs, 2 based on Foata normal form. 20/157 useless extension candidates. Maximal degree in co-relation 342. Up to 65 conditions per place. [2023-08-24 08:14:21,942 INFO L140 encePairwiseOnDemand]: 192/197 looper letters, 35 selfloop transitions, 10 changer transitions 4/49 dead transitions. [2023-08-24 08:14:21,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 49 transitions, 348 flow [2023-08-24 08:14:21,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 08:14:21,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 08:14:21,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 478 transitions. [2023-08-24 08:14:21,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40439932318104904 [2023-08-24 08:14:21,945 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 478 transitions. [2023-08-24 08:14:21,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 478 transitions. [2023-08-24 08:14:21,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:14:21,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 478 transitions. [2023-08-24 08:14:21,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.66666666666667) internal successors, (478), 6 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:21,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:21,948 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:21,948 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 119 flow. Second operand 6 states and 478 transitions. [2023-08-24 08:14:21,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 49 transitions, 348 flow [2023-08-24 08:14:21,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 49 transitions, 317 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-24 08:14:21,951 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 182 flow [2023-08-24 08:14:21,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=182, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-08-24 08:14:21,951 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 14 predicate places. [2023-08-24 08:14:21,951 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 182 flow [2023-08-24 08:14:21,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.71428571428571) internal successors, (530), 7 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:21,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:21,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:21,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 08:14:22,157 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 [2023-08-24 08:14:22,157 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:22,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:22,158 INFO L85 PathProgramCache]: Analyzing trace with hash 2057316734, now seen corresponding path program 2 times [2023-08-24 08:14:22,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:22,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116952259] [2023-08-24 08:14:22,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:22,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:22,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:22,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:22,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:22,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116952259] [2023-08-24 08:14:22,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116952259] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 08:14:22,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 08:14:22,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 08:14:22,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851280472] [2023-08-24 08:14:22,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 08:14:22,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 08:14:22,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:14:22,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 08:14:22,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 08:14:22,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2023-08-24 08:14:22,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:22,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:14:22,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2023-08-24 08:14:22,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:14:22,291 INFO L124 PetriNetUnfolderBase]: 69/141 cut-off events. [2023-08-24 08:14:22,291 INFO L125 PetriNetUnfolderBase]: For 348/348 co-relation queries the response was YES. [2023-08-24 08:14:22,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 601 conditions, 141 events. 69/141 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 400 event pairs, 9 based on Foata normal form. 2/143 useless extension candidates. Maximal degree in co-relation 400. Up to 62 conditions per place. [2023-08-24 08:14:22,293 INFO L140 encePairwiseOnDemand]: 192/197 looper letters, 35 selfloop transitions, 8 changer transitions 2/45 dead transitions. [2023-08-24 08:14:22,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 377 flow [2023-08-24 08:14:22,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 08:14:22,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 08:14:22,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 417 transitions. [2023-08-24 08:14:22,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4233502538071066 [2023-08-24 08:14:22,295 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 417 transitions. [2023-08-24 08:14:22,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 417 transitions. [2023-08-24 08:14:22,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:14:22,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 417 transitions. [2023-08-24 08:14:22,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:22,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:22,297 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:22,297 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 182 flow. Second operand 5 states and 417 transitions. [2023-08-24 08:14:22,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 377 flow [2023-08-24 08:14:22,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 45 transitions, 356 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-24 08:14:22,300 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 217 flow [2023-08-24 08:14:22,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-08-24 08:14:22,300 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 19 predicate places. [2023-08-24 08:14:22,300 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 217 flow [2023-08-24 08:14:22,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:22,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:22,301 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:22,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 08:14:22,301 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:22,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:22,301 INFO L85 PathProgramCache]: Analyzing trace with hash 18175184, now seen corresponding path program 1 times [2023-08-24 08:14:22,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:22,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331135589] [2023-08-24 08:14:22,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:22,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:22,501 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:14:22,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:22,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331135589] [2023-08-24 08:14:22,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331135589] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:14:22,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1201057867] [2023-08-24 08:14:22,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:22,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:22,502 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:14:22,503 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) [2023-08-24 08:14:22,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 08:14:22,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:22,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 08:14:22,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:14:22,672 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:14:22,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:14:22,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:14:22,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1201057867] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:14:22,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:14:22,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2023-08-24 08:14:22,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911490786] [2023-08-24 08:14:22,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:14:22,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 08:14:22,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:14:22,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 08:14:22,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-24 08:14:22,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 197 [2023-08-24 08:14:22,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 217 flow. Second operand has 8 states, 8 states have (on average 79.125) internal successors, (633), 8 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:22,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:14:22,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 197 [2023-08-24 08:14:22,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:14:22,917 INFO L124 PetriNetUnfolderBase]: 151/294 cut-off events. [2023-08-24 08:14:22,917 INFO L125 PetriNetUnfolderBase]: For 923/923 co-relation queries the response was YES. [2023-08-24 08:14:22,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1355 conditions, 294 events. 151/294 cut-off events. For 923/923 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1083 event pairs, 20 based on Foata normal form. 24/318 useless extension candidates. Maximal degree in co-relation 748. Up to 121 conditions per place. [2023-08-24 08:14:22,919 INFO L140 encePairwiseOnDemand]: 193/197 looper letters, 62 selfloop transitions, 15 changer transitions 0/77 dead transitions. [2023-08-24 08:14:22,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 77 transitions, 686 flow [2023-08-24 08:14:22,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 08:14:22,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 08:14:22,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 579 transitions. [2023-08-24 08:14:22,921 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41986947063089197 [2023-08-24 08:14:22,921 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 579 transitions. [2023-08-24 08:14:22,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 579 transitions. [2023-08-24 08:14:22,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:14:22,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 579 transitions. [2023-08-24 08:14:22,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:22,924 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:22,924 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:22,924 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 217 flow. Second operand 7 states and 579 transitions. [2023-08-24 08:14:22,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 77 transitions, 686 flow [2023-08-24 08:14:22,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 77 transitions, 682 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-24 08:14:22,927 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 363 flow [2023-08-24 08:14:22,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=363, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-08-24 08:14:22,928 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 27 predicate places. [2023-08-24 08:14:22,928 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 363 flow [2023-08-24 08:14:22,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 79.125) internal successors, (633), 8 states have internal predecessors, (633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:22,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:22,928 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:22,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 08:14:23,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-24 08:14:23,133 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:23,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:23,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1308914164, now seen corresponding path program 2 times [2023-08-24 08:14:23,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:23,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733152574] [2023-08-24 08:14:23,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:23,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:23,680 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:14:23,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:23,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733152574] [2023-08-24 08:14:23,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733152574] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:14:23,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916104734] [2023-08-24 08:14:23,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 08:14:23,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:23,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:14:23,682 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) [2023-08-24 08:14:23,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 08:14:23,746 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 08:14:23,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:14:23,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-24 08:14:23,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:14:23,993 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:14:23,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:14:24,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:14:24,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916104734] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:14:24,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:14:24,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-08-24 08:14:24,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956001488] [2023-08-24 08:14:24,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:14:24,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 08:14:24,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:14:24,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 08:14:24,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-08-24 08:14:24,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 197 [2023-08-24 08:14:24,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 363 flow. Second operand has 12 states, 12 states have (on average 64.75) internal successors, (777), 12 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:24,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:14:24,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 197 [2023-08-24 08:14:24,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:14:24,626 INFO L124 PetriNetUnfolderBase]: 298/596 cut-off events. [2023-08-24 08:14:24,626 INFO L125 PetriNetUnfolderBase]: For 2519/2519 co-relation queries the response was YES. [2023-08-24 08:14:24,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2935 conditions, 596 events. 298/596 cut-off events. For 2519/2519 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2915 event pairs, 14 based on Foata normal form. 5/601 useless extension candidates. Maximal degree in co-relation 1364. Up to 233 conditions per place. [2023-08-24 08:14:24,630 INFO L140 encePairwiseOnDemand]: 192/197 looper letters, 62 selfloop transitions, 47 changer transitions 2/111 dead transitions. [2023-08-24 08:14:24,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 111 transitions, 1116 flow [2023-08-24 08:14:24,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 08:14:24,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 08:14:24,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 687 transitions. [2023-08-24 08:14:24,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3487309644670051 [2023-08-24 08:14:24,632 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 687 transitions. [2023-08-24 08:14:24,632 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 687 transitions. [2023-08-24 08:14:24,632 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:14:24,632 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 687 transitions. [2023-08-24 08:14:24,633 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 68.7) internal successors, (687), 10 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:24,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 197.0) internal successors, (2167), 11 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:24,635 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 197.0) internal successors, (2167), 11 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:24,636 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 363 flow. Second operand 10 states and 687 transitions. [2023-08-24 08:14:24,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 111 transitions, 1116 flow [2023-08-24 08:14:24,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 111 transitions, 1033 flow, removed 37 selfloop flow, removed 2 redundant places. [2023-08-24 08:14:24,641 INFO L231 Difference]: Finished difference. Result has 57 places, 73 transitions, 841 flow [2023-08-24 08:14:24,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=841, PETRI_PLACES=57, PETRI_TRANSITIONS=73} [2023-08-24 08:14:24,642 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 39 predicate places. [2023-08-24 08:14:24,642 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 73 transitions, 841 flow [2023-08-24 08:14:24,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 64.75) internal successors, (777), 12 states have internal predecessors, (777), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:24,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:24,642 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:24,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 08:14:24,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:24,847 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:24,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:24,847 INFO L85 PathProgramCache]: Analyzing trace with hash -970027468, now seen corresponding path program 3 times [2023-08-24 08:14:24,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:24,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139238333] [2023-08-24 08:14:24,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:24,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:25,472 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 08:14:25,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:25,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139238333] [2023-08-24 08:14:25,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139238333] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:14:25,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023730489] [2023-08-24 08:14:25,473 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 08:14:25,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:25,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:14:25,474 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:14:25,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 08:14:25,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-24 08:14:25,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:14:25,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-24 08:14:25,536 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:14:25,930 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:25,931 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:14:26,330 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:26,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023730489] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:14:26,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:14:26,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2023-08-24 08:14:26,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805378678] [2023-08-24 08:14:26,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:14:26,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 08:14:26,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:14:26,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 08:14:26,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-08-24 08:14:26,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 197 [2023-08-24 08:14:26,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 73 transitions, 841 flow. Second operand has 14 states, 14 states have (on average 68.35714285714286) internal successors, (957), 14 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:26,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:14:26,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 197 [2023-08-24 08:14:26,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:14:27,361 INFO L124 PetriNetUnfolderBase]: 431/881 cut-off events. [2023-08-24 08:14:27,361 INFO L125 PetriNetUnfolderBase]: For 4963/4963 co-relation queries the response was YES. [2023-08-24 08:14:27,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4694 conditions, 881 events. 431/881 cut-off events. For 4963/4963 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4918 event pairs, 16 based on Foata normal form. 6/887 useless extension candidates. Maximal degree in co-relation 3804. Up to 339 conditions per place. [2023-08-24 08:14:27,366 INFO L140 encePairwiseOnDemand]: 192/197 looper letters, 57 selfloop transitions, 101 changer transitions 2/160 dead transitions. [2023-08-24 08:14:27,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 160 transitions, 1791 flow [2023-08-24 08:14:27,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-24 08:14:27,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-24 08:14:27,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1075 transitions. [2023-08-24 08:14:27,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3637901861252115 [2023-08-24 08:14:27,370 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1075 transitions. [2023-08-24 08:14:27,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1075 transitions. [2023-08-24 08:14:27,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:14:27,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1075 transitions. [2023-08-24 08:14:27,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 71.66666666666667) internal successors, (1075), 15 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:27,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 197.0) internal successors, (3152), 16 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:27,376 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 197.0) internal successors, (3152), 16 states have internal predecessors, (3152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:27,376 INFO L175 Difference]: Start difference. First operand has 57 places, 73 transitions, 841 flow. Second operand 15 states and 1075 transitions. [2023-08-24 08:14:27,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 160 transitions, 1791 flow [2023-08-24 08:14:27,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 160 transitions, 1700 flow, removed 44 selfloop flow, removed 1 redundant places. [2023-08-24 08:14:27,387 INFO L231 Difference]: Finished difference. Result has 71 places, 111 transitions, 1378 flow [2023-08-24 08:14:27,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1378, PETRI_PLACES=71, PETRI_TRANSITIONS=111} [2023-08-24 08:14:27,389 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 53 predicate places. [2023-08-24 08:14:27,389 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 111 transitions, 1378 flow [2023-08-24 08:14:27,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 68.35714285714286) internal successors, (957), 14 states have internal predecessors, (957), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:27,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:27,390 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:27,397 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 08:14:27,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:27,595 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:27,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:27,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1894613441, now seen corresponding path program 4 times [2023-08-24 08:14:27,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:27,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489046671] [2023-08-24 08:14:27,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:27,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:27,822 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:27,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:27,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489046671] [2023-08-24 08:14:27,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489046671] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:14:27,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511194288] [2023-08-24 08:14:27,823 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 08:14:27,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:27,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:14:27,823 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:14:27,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 08:14:27,919 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 08:14:27,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:14:27,920 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-24 08:14:27,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:14:27,989 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:14:27,989 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:14:28,113 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:14:28,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511194288] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:14:28,113 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:14:28,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15 [2023-08-24 08:14:28,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943635058] [2023-08-24 08:14:28,113 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:14:28,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 08:14:28,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:14:28,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 08:14:28,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-08-24 08:14:28,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2023-08-24 08:14:28,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 111 transitions, 1378 flow. Second operand has 16 states, 16 states have (on average 79.625) internal successors, (1274), 16 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:28,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:14:28,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2023-08-24 08:14:28,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:14:36,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:14:40,444 INFO L124 PetriNetUnfolderBase]: 988/2041 cut-off events. [2023-08-24 08:14:40,444 INFO L125 PetriNetUnfolderBase]: For 15755/15755 co-relation queries the response was YES. [2023-08-24 08:14:40,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11713 conditions, 2041 events. 988/2041 cut-off events. For 15755/15755 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 14051 event pairs, 0 based on Foata normal form. 402/2443 useless extension candidates. Maximal degree in co-relation 10000. Up to 751 conditions per place. [2023-08-24 08:14:40,457 INFO L140 encePairwiseOnDemand]: 192/197 looper letters, 197 selfloop transitions, 244 changer transitions 141/582 dead transitions. [2023-08-24 08:14:40,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 582 transitions, 7744 flow [2023-08-24 08:14:40,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-08-24 08:14:40,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-08-24 08:14:40,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 5493 transitions. [2023-08-24 08:14:40,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41616789150693234 [2023-08-24 08:14:40,467 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 5493 transitions. [2023-08-24 08:14:40,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 5493 transitions. [2023-08-24 08:14:40,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:14:40,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 5493 transitions. [2023-08-24 08:14:40,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 81.98507462686567) internal successors, (5493), 67 states have internal predecessors, (5493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:40,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 197.0) internal successors, (13396), 68 states have internal predecessors, (13396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:40,490 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 197.0) internal successors, (13396), 68 states have internal predecessors, (13396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:40,491 INFO L175 Difference]: Start difference. First operand has 71 places, 111 transitions, 1378 flow. Second operand 67 states and 5493 transitions. [2023-08-24 08:14:40,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 582 transitions, 7744 flow [2023-08-24 08:14:40,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 582 transitions, 6062 flow, removed 744 selfloop flow, removed 8 redundant places. [2023-08-24 08:14:40,609 INFO L231 Difference]: Finished difference. Result has 138 places, 302 transitions, 3518 flow [2023-08-24 08:14:40,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=3518, PETRI_PLACES=138, PETRI_TRANSITIONS=302} [2023-08-24 08:14:40,609 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 120 predicate places. [2023-08-24 08:14:40,610 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 302 transitions, 3518 flow [2023-08-24 08:14:40,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 79.625) internal successors, (1274), 16 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:40,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:40,611 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:40,627 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-24 08:14:40,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:40,816 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:40,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:40,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1403469600, now seen corresponding path program 5 times [2023-08-24 08:14:40,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:40,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437079390] [2023-08-24 08:14:40,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:40,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:40,993 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:40,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:40,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437079390] [2023-08-24 08:14:40,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437079390] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:14:40,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743658520] [2023-08-24 08:14:40,994 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 08:14:40,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:40,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:14:40,995 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:14:40,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 08:14:41,067 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-24 08:14:41,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:14:41,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-24 08:14:41,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:14:41,314 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:41,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:14:41,676 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:14:41,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743658520] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:14:41,676 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:14:41,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 17 [2023-08-24 08:14:41,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173010191] [2023-08-24 08:14:41,676 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:14:41,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-24 08:14:41,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:14:41,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-24 08:14:41,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-08-24 08:14:41,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 197 [2023-08-24 08:14:41,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 302 transitions, 3518 flow. Second operand has 18 states, 18 states have (on average 74.44444444444444) internal successors, (1340), 18 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:41,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:14:41,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 197 [2023-08-24 08:14:41,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:14:45,351 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:14:53,782 INFO L124 PetriNetUnfolderBase]: 1011/1870 cut-off events. [2023-08-24 08:14:53,782 INFO L125 PetriNetUnfolderBase]: For 9484/9484 co-relation queries the response was YES. [2023-08-24 08:14:53,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10487 conditions, 1870 events. 1011/1870 cut-off events. For 9484/9484 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 10765 event pairs, 4 based on Foata normal form. 116/1986 useless extension candidates. Maximal degree in co-relation 10422. Up to 662 conditions per place. [2023-08-24 08:14:53,795 INFO L140 encePairwiseOnDemand]: 192/197 looper letters, 311 selfloop transitions, 307 changer transitions 0/618 dead transitions. [2023-08-24 08:14:53,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 618 transitions, 7552 flow [2023-08-24 08:14:53,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-08-24 08:14:53,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-08-24 08:14:53,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3294 transitions. [2023-08-24 08:14:53,799 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888560972730492 [2023-08-24 08:14:53,799 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 3294 transitions. [2023-08-24 08:14:53,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 3294 transitions. [2023-08-24 08:14:53,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:14:53,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 3294 transitions. [2023-08-24 08:14:53,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 76.6046511627907) internal successors, (3294), 43 states have internal predecessors, (3294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:53,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 197.0) internal successors, (8668), 44 states have internal predecessors, (8668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:53,810 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 197.0) internal successors, (8668), 44 states have internal predecessors, (8668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:53,811 INFO L175 Difference]: Start difference. First operand has 138 places, 302 transitions, 3518 flow. Second operand 43 states and 3294 transitions. [2023-08-24 08:14:53,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 618 transitions, 7552 flow [2023-08-24 08:14:53,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 618 transitions, 5921 flow, removed 729 selfloop flow, removed 16 redundant places. [2023-08-24 08:14:53,865 INFO L231 Difference]: Finished difference. Result has 171 places, 480 transitions, 5316 flow [2023-08-24 08:14:53,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2498, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=5316, PETRI_PLACES=171, PETRI_TRANSITIONS=480} [2023-08-24 08:14:53,866 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 153 predicate places. [2023-08-24 08:14:53,866 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 480 transitions, 5316 flow [2023-08-24 08:14:53,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 74.44444444444444) internal successors, (1340), 18 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:53,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:53,866 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:53,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-24 08:14:54,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:54,073 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:54,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:54,073 INFO L85 PathProgramCache]: Analyzing trace with hash -2100218938, now seen corresponding path program 6 times [2023-08-24 08:14:54,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:54,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638086258] [2023-08-24 08:14:54,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:54,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:54,418 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:14:54,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:54,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638086258] [2023-08-24 08:14:54,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638086258] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:14:54,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [871032543] [2023-08-24 08:14:54,419 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 08:14:54,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:54,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:14:54,420 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:14:54,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 08:14:54,521 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-08-24 08:14:54,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:14:54,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-24 08:14:54,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:14:54,813 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:14:54,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:14:55,328 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 08:14:55,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [871032543] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:14:55,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:14:55,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 19 [2023-08-24 08:14:55,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507105092] [2023-08-24 08:14:55,329 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:14:55,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-24 08:14:55,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:14:55,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-24 08:14:55,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2023-08-24 08:14:55,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 197 [2023-08-24 08:14:55,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 480 transitions, 5316 flow. Second operand has 20 states, 20 states have (on average 69.35) internal successors, (1387), 20 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:55,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:14:55,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 197 [2023-08-24 08:14:55,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:14:59,356 INFO L124 PetriNetUnfolderBase]: 1488/2673 cut-off events. [2023-08-24 08:14:59,356 INFO L125 PetriNetUnfolderBase]: For 16103/16103 co-relation queries the response was YES. [2023-08-24 08:14:59,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14306 conditions, 2673 events. 1488/2673 cut-off events. For 16103/16103 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 15991 event pairs, 0 based on Foata normal form. 204/2869 useless extension candidates. Maximal degree in co-relation 14180. Up to 960 conditions per place. [2023-08-24 08:14:59,377 INFO L140 encePairwiseOnDemand]: 192/197 looper letters, 481 selfloop transitions, 410 changer transitions 0/891 dead transitions. [2023-08-24 08:14:59,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 891 transitions, 10563 flow [2023-08-24 08:14:59,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2023-08-24 08:14:59,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2023-08-24 08:14:59,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 3659 transitions. [2023-08-24 08:14:59,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3641883149198766 [2023-08-24 08:14:59,382 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 3659 transitions. [2023-08-24 08:14:59,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 3659 transitions. [2023-08-24 08:14:59,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:14:59,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 3659 transitions. [2023-08-24 08:14:59,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 71.74509803921569) internal successors, (3659), 51 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:59,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 197.0) internal successors, (10244), 52 states have internal predecessors, (10244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:59,396 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 197.0) internal successors, (10244), 52 states have internal predecessors, (10244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:59,396 INFO L175 Difference]: Start difference. First operand has 171 places, 480 transitions, 5316 flow. Second operand 51 states and 3659 transitions. [2023-08-24 08:14:59,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 891 transitions, 10563 flow [2023-08-24 08:14:59,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 891 transitions, 10045 flow, removed 213 selfloop flow, removed 15 redundant places. [2023-08-24 08:14:59,519 INFO L231 Difference]: Finished difference. Result has 227 places, 690 transitions, 8650 flow [2023-08-24 08:14:59,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=4792, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=8650, PETRI_PLACES=227, PETRI_TRANSITIONS=690} [2023-08-24 08:14:59,520 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 209 predicate places. [2023-08-24 08:14:59,520 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 690 transitions, 8650 flow [2023-08-24 08:14:59,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 69.35) internal successors, (1387), 20 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:14:59,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:14:59,521 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:14:59,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-24 08:14:59,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:59,726 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:14:59,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:14:59,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1861119250, now seen corresponding path program 7 times [2023-08-24 08:14:59,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:14:59,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282424475] [2023-08-24 08:14:59,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:14:59,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:14:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:14:59,989 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-24 08:14:59,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:14:59,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282424475] [2023-08-24 08:14:59,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282424475] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:14:59,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726328787] [2023-08-24 08:14:59,991 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 08:14:59,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:14:59,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:14:59,993 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:15:00,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-24 08:15:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:15:00,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-24 08:15:00,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:15:00,696 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:15:00,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:15:03,391 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:15:03,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726328787] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:15:03,391 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:15:03,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 11] total 25 [2023-08-24 08:15:03,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507663408] [2023-08-24 08:15:03,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:15:03,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-24 08:15:03,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:15:03,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-24 08:15:03,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2023-08-24 08:15:03,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 197 [2023-08-24 08:15:03,394 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 690 transitions, 8650 flow. Second operand has 26 states, 26 states have (on average 73.76923076923077) internal successors, (1918), 26 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:15:03,394 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:15:03,394 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 197 [2023-08-24 08:15:03,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:15:13,626 WARN L234 SmtUtils]: Spent 5.49s on a formula simplification. DAG size of input: 76 DAG size of output: 72 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 08:15:15,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:15:26,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:15:34,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:15:38,102 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:15:41,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:15:43,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:15:55,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:16:01,202 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:16:17,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:16:30,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:16:38,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:16:43,163 INFO L124 PetriNetUnfolderBase]: 2723/4846 cut-off events. [2023-08-24 08:16:43,163 INFO L125 PetriNetUnfolderBase]: For 34595/34595 co-relation queries the response was YES. [2023-08-24 08:16:43,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30318 conditions, 4846 events. 2723/4846 cut-off events. For 34595/34595 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 32154 event pairs, 34 based on Foata normal form. 42/4886 useless extension candidates. Maximal degree in co-relation 29906. Up to 1523 conditions per place. [2023-08-24 08:16:43,203 INFO L140 encePairwiseOnDemand]: 192/197 looper letters, 599 selfloop transitions, 825 changer transitions 29/1453 dead transitions. [2023-08-24 08:16:43,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 1453 transitions, 20657 flow [2023-08-24 08:16:43,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2023-08-24 08:16:43,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2023-08-24 08:16:43,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 3965 transitions. [2023-08-24 08:16:43,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870558375634518 [2023-08-24 08:16:43,207 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 3965 transitions. [2023-08-24 08:16:43,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 3965 transitions. [2023-08-24 08:16:43,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:16:43,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 3965 transitions. [2023-08-24 08:16:43,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 76.25) internal successors, (3965), 52 states have internal predecessors, (3965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:16:43,219 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 197.0) internal successors, (10441), 53 states have internal predecessors, (10441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:16:43,220 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 197.0) internal successors, (10441), 53 states have internal predecessors, (10441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:16:43,220 INFO L175 Difference]: Start difference. First operand has 227 places, 690 transitions, 8650 flow. Second operand 52 states and 3965 transitions. [2023-08-24 08:16:43,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 1453 transitions, 20657 flow [2023-08-24 08:16:43,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 1453 transitions, 19689 flow, removed 354 selfloop flow, removed 11 redundant places. [2023-08-24 08:16:43,584 INFO L231 Difference]: Finished difference. Result has 297 places, 1211 transitions, 17709 flow [2023-08-24 08:16:43,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=8013, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=690, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=370, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=17709, PETRI_PLACES=297, PETRI_TRANSITIONS=1211} [2023-08-24 08:16:43,585 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 279 predicate places. [2023-08-24 08:16:43,585 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 1211 transitions, 17709 flow [2023-08-24 08:16:43,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 73.76923076923077) internal successors, (1918), 26 states have internal predecessors, (1918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:16:43,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:16:43,585 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:16:43,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-24 08:16:43,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-24 08:16:43,789 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:16:43,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:16:43,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1879049154, now seen corresponding path program 8 times [2023-08-24 08:16:43,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:16:43,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753528745] [2023-08-24 08:16:43,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:16:43,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:16:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:16:44,624 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:16:44,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:16:44,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753528745] [2023-08-24 08:16:44,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753528745] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:16:44,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992052104] [2023-08-24 08:16:44,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 08:16:44,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:16:44,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:16:44,626 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:16:44,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-24 08:16:44,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 08:16:44,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:16:44,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-24 08:16:44,946 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:16:45,637 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:16:45,638 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:16:47,510 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 15 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:16:47,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992052104] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:16:47,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:16:47,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 32 [2023-08-24 08:16:47,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89576252] [2023-08-24 08:16:47,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:16:47,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-24 08:16:47,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:16:47,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-24 08:16:47,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=900, Unknown=0, NotChecked=0, Total=1056 [2023-08-24 08:16:47,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 197 [2023-08-24 08:16:47,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 1211 transitions, 17709 flow. Second operand has 33 states, 33 states have (on average 68.54545454545455) internal successors, (2262), 33 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:16:47,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:16:47,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 197 [2023-08-24 08:16:47,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:16:54,346 WARN L234 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 74 DAG size of output: 49 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 08:16:55,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:16:57,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:17:02,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:17:10,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:17:16,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:17:23,567 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:17:38,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:17:41,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:17:46,035 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:18:14,326 WARN L234 SmtUtils]: Spent 16.58s on a formula simplification. DAG size of input: 77 DAG size of output: 56 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 08:18:23,470 WARN L234 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 65 DAG size of output: 57 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 08:18:32,360 WARN L234 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 74 DAG size of output: 60 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 08:18:40,022 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:19:00,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:19:21,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:19:31,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:19:40,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:20:15,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:20:32,020 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:20:34,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:20:41,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 08:20:43,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:20:45,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:20:47,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:20:49,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:21:10,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:21:21,781 WARN L234 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 71 DAG size of output: 66 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 08:21:28,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:21:30,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:21:34,030 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:21:36,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:21:40,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:21:42,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:21:48,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:21:50,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:21:52,480 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:21:56,798 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:22:12,430 INFO L124 PetriNetUnfolderBase]: 4714/8429 cut-off events. [2023-08-24 08:22:12,430 INFO L125 PetriNetUnfolderBase]: For 100858/100858 co-relation queries the response was YES. [2023-08-24 08:22:12,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62649 conditions, 8429 events. 4714/8429 cut-off events. For 100858/100858 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 61898 event pairs, 20 based on Foata normal form. 150/8579 useless extension candidates. Maximal degree in co-relation 62434. Up to 2549 conditions per place. [2023-08-24 08:22:12,514 INFO L140 encePairwiseOnDemand]: 192/197 looper letters, 1062 selfloop transitions, 1410 changer transitions 62/2534 dead transitions. [2023-08-24 08:22:12,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 2534 transitions, 42423 flow [2023-08-24 08:22:12,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2023-08-24 08:22:12,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2023-08-24 08:22:12,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 8056 transitions. [2023-08-24 08:22:12,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3587140439932318 [2023-08-24 08:22:12,520 INFO L72 ComplementDD]: Start complementDD. Operand 114 states and 8056 transitions. [2023-08-24 08:22:12,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 114 states and 8056 transitions. [2023-08-24 08:22:12,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:22:12,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 114 states and 8056 transitions. [2023-08-24 08:22:12,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 115 states, 114 states have (on average 70.66666666666667) internal successors, (8056), 114 states have internal predecessors, (8056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:22:12,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 115 states, 115 states have (on average 197.0) internal successors, (22655), 115 states have internal predecessors, (22655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:22:12,605 INFO L81 ComplementDD]: Finished complementDD. Result has 115 states, 115 states have (on average 197.0) internal successors, (22655), 115 states have internal predecessors, (22655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:22:12,605 INFO L175 Difference]: Start difference. First operand has 297 places, 1211 transitions, 17709 flow. Second operand 114 states and 8056 transitions. [2023-08-24 08:22:12,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 2534 transitions, 42423 flow [2023-08-24 08:22:14,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 2534 transitions, 39298 flow, removed 1506 selfloop flow, removed 16 redundant places. [2023-08-24 08:22:14,883 INFO L231 Difference]: Finished difference. Result has 435 places, 2083 transitions, 34662 flow [2023-08-24 08:22:14,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=16388, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=686, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=114, PETRI_FLOW=34662, PETRI_PLACES=435, PETRI_TRANSITIONS=2083} [2023-08-24 08:22:14,884 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 417 predicate places. [2023-08-24 08:22:14,884 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 2083 transitions, 34662 flow [2023-08-24 08:22:14,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 68.54545454545455) internal successors, (2262), 33 states have internal predecessors, (2262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:22:14,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:22:14,885 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:22:14,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-24 08:22:15,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-24 08:22:15,085 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:22:15,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:22:15,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1260990356, now seen corresponding path program 9 times [2023-08-24 08:22:15,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:22:15,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879370604] [2023-08-24 08:22:15,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:22:15,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:22:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:22:15,564 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:22:15,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:22:15,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879370604] [2023-08-24 08:22:15,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879370604] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:22:15,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1312436388] [2023-08-24 08:22:15,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 08:22:15,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:22:15,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:22:15,566 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:22:15,573 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-24 08:22:15,738 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-24 08:22:15,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:22:15,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 22 conjunts are in the unsatisfiable core [2023-08-24 08:22:15,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:22:16,597 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 5 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:22:16,597 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:22:26,075 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:22:26,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1312436388] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:22:26,075 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:22:26,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 29 [2023-08-24 08:22:26,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143421016] [2023-08-24 08:22:26,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:22:26,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-24 08:22:26,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:22:26,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-24 08:22:26,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=653, Unknown=0, NotChecked=0, Total=870 [2023-08-24 08:22:26,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 197 [2023-08-24 08:22:26,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 2083 transitions, 34662 flow. Second operand has 30 states, 30 states have (on average 73.46666666666667) internal successors, (2204), 30 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:22:26,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:22:26,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 197 [2023-08-24 08:22:26,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:22:33,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:22:43,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:23:25,539 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:23:34,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:23:40,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 08:24:41,886 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:24:49,406 INFO L124 PetriNetUnfolderBase]: 9855/16700 cut-off events. [2023-08-24 08:24:49,406 INFO L125 PetriNetUnfolderBase]: For 261038/261038 co-relation queries the response was YES. [2023-08-24 08:24:49,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139169 conditions, 16700 events. 9855/16700 cut-off events. For 261038/261038 co-relation queries the response was YES. Maximal size of possible extension queue 940. Compared 126568 event pairs, 32 based on Foata normal form. 260/16960 useless extension candidates. Maximal degree in co-relation 138226. Up to 4925 conditions per place. [2023-08-24 08:24:49,615 INFO L140 encePairwiseOnDemand]: 192/197 looper letters, 1526 selfloop transitions, 3212 changer transitions 2/4740 dead transitions. [2023-08-24 08:24:49,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 4740 transitions, 88176 flow [2023-08-24 08:24:49,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-08-24 08:24:49,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2023-08-24 08:24:49,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 4959 transitions. [2023-08-24 08:24:49,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3933217005076142 [2023-08-24 08:24:49,619 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 4959 transitions. [2023-08-24 08:24:49,619 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 4959 transitions. [2023-08-24 08:24:49,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 08:24:49,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 4959 transitions. [2023-08-24 08:24:49,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 77.484375) internal successors, (4959), 64 states have internal predecessors, (4959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:24:49,631 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 197.0) internal successors, (12805), 65 states have internal predecessors, (12805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:24:49,632 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 197.0) internal successors, (12805), 65 states have internal predecessors, (12805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:24:49,632 INFO L175 Difference]: Start difference. First operand has 435 places, 2083 transitions, 34662 flow. Second operand 64 states and 4959 transitions. [2023-08-24 08:24:49,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 4740 transitions, 88176 flow [2023-08-24 08:25:00,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 4740 transitions, 81524 flow, removed 2306 selfloop flow, removed 16 redundant places. [2023-08-24 08:25:00,658 INFO L231 Difference]: Finished difference. Result has 503 places, 4444 transitions, 82889 flow [2023-08-24 08:25:00,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=31049, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2077, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=64, PETRI_FLOW=82889, PETRI_PLACES=503, PETRI_TRANSITIONS=4444} [2023-08-24 08:25:00,660 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 485 predicate places. [2023-08-24 08:25:00,660 INFO L495 AbstractCegarLoop]: Abstraction has has 503 places, 4444 transitions, 82889 flow [2023-08-24 08:25:00,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 73.46666666666667) internal successors, (2204), 30 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:25:00,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 08:25:00,660 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 08:25:00,664 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-24 08:25:00,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-24 08:25:00,865 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-24 08:25:00,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 08:25:00,865 INFO L85 PathProgramCache]: Analyzing trace with hash 293985710, now seen corresponding path program 10 times [2023-08-24 08:25:00,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 08:25:00,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035903067] [2023-08-24 08:25:00,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 08:25:00,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 08:25:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 08:25:02,042 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:25:02,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 08:25:02,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035903067] [2023-08-24 08:25:02,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035903067] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 08:25:02,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7710821] [2023-08-24 08:25:02,043 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 08:25:02,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 08:25:02,043 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 08:25:02,044 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 08:25:02,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-24 08:25:02,310 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 08:25:02,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 08:25:02,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-24 08:25:02,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 08:25:03,084 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:25:03,084 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 08:25:05,498 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 08:25:05,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7710821] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 08:25:05,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 08:25:05,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 28 [2023-08-24 08:25:05,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118337897] [2023-08-24 08:25:05,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 08:25:05,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-24 08:25:05,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 08:25:05,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-24 08:25:05,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=679, Unknown=0, NotChecked=0, Total=812 [2023-08-24 08:25:05,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 197 [2023-08-24 08:25:05,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 4444 transitions, 82889 flow. Second operand has 29 states, 29 states have (on average 73.62068965517241) internal successors, (2135), 29 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 08:25:05,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 08:25:05,501 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 197 [2023-08-24 08:25:05,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 08:25:08,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:25:30,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-24 08:25:36,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-24 08:25:45,793 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-24 08:25:57,077 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:26:09,145 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse12 (mod c_~N~0 2147483648))) (let ((.cse2 (* .cse12 2)) (.cse6 (mod c_~i1~0 4294967296)) (.cse1 (* (div c_~N~0 2147483648) 4294967296)) (.cse11 (+ c_~i1~0 (* 8589934592 (div (+ (- 1) c_~i2~0) 4294967296))))) (let ((.cse9 (* 4294967296 (div c_~i1~0 4294967296))) (.cse10 (* (div (+ 4294967294 c_~i2~0) 4294967296) 4294967296)) (.cse0 (<= (+ .cse1 2 c_~i2~0 (* (div (+ c_~i1~0 4294967294 c_~i2~0 (* (- 2) c_~N~0)) 4294967296) 4294967296)) .cse11)) (.cse3 (<= .cse2 .cse6)) (.cse7 (* (div (+ c_~i1~0 4) 4294967296) 4294967296)) (.cse8 (+ c_~i1~0 5)) (.cse4 (<= .cse2 (mod (+ c_~i2~0 1) 4294967296)))) (and (or (and (<= (div c_~d1~0 256) 0) (<= 1 c_~d1~0)) .cse0) (<= (+ .cse1 c_~i2~0 1) (+ (* c_~N~0 2) (* (div c_~i2~0 4294967296) 4294967296))) (or (< c_~i1~0 (+ 4294967295 .cse2 (* 4294967296 (div (+ c_~i1~0 (- 4294967295)) 4294967296)))) .cse3) (or .cse3 (< c_~i1~0 (+ (* (div (+ c_~i1~0 (- 4294967293)) 4294967296) 4294967296) .cse2 4294967293)) (< (+ .cse2 (* (div (+ c_~i1~0 2) 4294967296) 4294967296)) (+ c_~i1~0 3)) .cse4) (forall ((v_z_179 Int)) (let ((.cse5 (* 2 v_z_179))) (or (<= .cse5 .cse6) (< (+ .cse7 .cse5) .cse8) (< (+ 4294967290 (* (div (+ c_~i1~0 5 (* (- 2) v_z_179)) 4294967296) 4294967296)) c_~i1~0) (<= .cse5 (mod c_~i2~0 4294967296)) (<= .cse5 (mod (+ 2 c_~i2~0) 4294967296))))) (<= (+ c_~i2~0 .cse9 .cse10 1) .cse11) (or (<= (+ 2 c_~i2~0 .cse9 .cse10) .cse11) .cse0) (or (< (+ (* 4294967296 (div (+ c_~i1~0 (* (- 2) .cse12) 5) 4294967296)) 4294967290) c_~i1~0) .cse3 (< (+ .cse7 .cse2) .cse8) .cse4))))) is different from false [2023-08-24 08:26:11,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-24 08:26:25,039 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:27:09,196 WARN L234 SmtUtils]: Spent 28.60s on a formula simplification. DAG size of input: 108 DAG size of output: 96 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 08:27:22,206 WARN L234 SmtUtils]: Spent 8.85s on a formula simplification. DAG size of input: 85 DAG size of output: 64 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 08:27:33,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-24 08:27:35,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-24 08:27:36,491 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 08:27:43,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-24 08:27:45,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 08:27:55,783 WARN L234 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 88 DAG size of output: 76 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 08:27:58,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-24 08:28:39,356 WARN L234 SmtUtils]: Spent 27.57s on a formula simplification. DAG size of input: 110 DAG size of output: 98 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 08:28:42,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-24 08:28:45,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] Received shutdown request... [2023-08-24 08:28:47,230 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 08:28:47,230 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 08:28:47,531 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-08-24 08:28:48,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-24 08:28:48,431 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2023-08-24 08:28:48,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 [2023-08-24 08:28:48,439 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-24 08:28:48,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-24 08:28:48,440 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-24 08:28:48,441 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-24 08:28:48,441 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-24 08:28:48,441 INFO L445 BasicCegarLoop]: Path program histogram: [10, 2, 2, 1] [2023-08-24 08:28:48,443 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 08:28:48,443 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 08:28:48,444 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 08:28:48 BasicIcfg [2023-08-24 08:28:48,444 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 08:28:48,445 INFO L158 Benchmark]: Toolchain (without parser) took 870894.40ms. Allocated memory was 379.6MB in the beginning and 1.3GB in the end (delta: 916.5MB). Free memory was 338.6MB in the beginning and 557.1MB in the end (delta: -218.5MB). Peak memory consumption was 701.1MB. Max. memory is 16.0GB. [2023-08-24 08:28:48,445 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 379.6MB. Free memory was 357.3MB in the beginning and 357.2MB in the end (delta: 86.2kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 08:28:48,445 INFO L158 Benchmark]: CACSL2BoogieTranslator took 163.02ms. Allocated memory is still 379.6MB. Free memory was 337.5MB in the beginning and 327.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-24 08:28:48,445 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.86ms. Allocated memory is still 379.6MB. Free memory was 327.0MB in the beginning and 324.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 08:28:48,445 INFO L158 Benchmark]: Boogie Preprocessor took 26.18ms. Allocated memory is still 379.6MB. Free memory was 324.9MB in the beginning and 323.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 08:28:48,445 INFO L158 Benchmark]: RCFGBuilder took 371.25ms. Allocated memory is still 379.6MB. Free memory was 323.9MB in the beginning and 308.2MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-24 08:28:48,446 INFO L158 Benchmark]: TraceAbstraction took 870296.28ms. Allocated memory was 379.6MB in the beginning and 1.3GB in the end (delta: 916.5MB). Free memory was 308.2MB in the beginning and 557.1MB in the end (delta: -249.0MB). Peak memory consumption was 669.6MB. Max. memory is 16.0GB. [2023-08-24 08:28:48,446 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 379.6MB. Free memory was 357.3MB in the beginning and 357.2MB in the end (delta: 86.2kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 163.02ms. Allocated memory is still 379.6MB. Free memory was 337.5MB in the beginning and 327.0MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 33.86ms. Allocated memory is still 379.6MB. Free memory was 327.0MB in the beginning and 324.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.18ms. Allocated memory is still 379.6MB. Free memory was 324.9MB in the beginning and 323.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 371.25ms. Allocated memory is still 379.6MB. Free memory was 323.9MB in the beginning and 308.2MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 870296.28ms. Allocated memory was 379.6MB in the beginning and 1.3GB in the end (delta: 916.5MB). Free memory was 308.2MB in the beginning and 557.1MB in the end (delta: -249.0MB). Peak memory consumption was 669.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 92 PlacesBefore, 18 PlacesAfterwards, 93 TransitionsBefore, 13 TransitionsAfterwards, 728 CoEnabledTransitionPairs, 7 FixpointIterations, 51 TrivialSequentialCompositions, 22 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 9 ConcurrentYvCompositions, 6 ChoiceCompositions, 94 TotalNumberOfCompositions, 789 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 756, independent: 750, independent conditional: 0, independent unconditional: 750, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 392, independent: 387, independent conditional: 0, independent unconditional: 387, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 756, independent: 363, independent conditional: 0, independent unconditional: 363, dependent: 1, dependent conditional: 0, dependent unconditional: 1, unknown: 392, unknown conditional: 0, unknown unconditional: 392] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 120 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 870.2s, OverallIterations: 15, TraceHistogramMax: 5, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 836.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 43 mSolverCounterUnknown, 2067 SdHoareTripleChecker+Valid, 235.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2067 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 232.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 74 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 544 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8463 IncrementalHoareTripleChecker+Invalid, 9125 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 544 mSolverCounterUnsat, 0 mSDtfsCounter, 8463 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 822 GetRequests, 236 SyntacticMatches, 15 SemanticMatches, 571 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 14184 ImplicationChecksByTransitivity, 590.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82889occurred in iteration=14, InterpolantAutomatonStates: 446, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 27.8s InterpolantComputationTime, 419 NumberOfCodeBlocks, 419 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 568 ConstructedInterpolants, 5 QuantifiedInterpolants, 10897 SizeOfPredicates, 158 NumberOfNonLiveVariables, 1343 ConjunctsInSsa, 163 ConjunctsInUnsatCore, 37 InterpolantComputations, 4 PerfectInterpolantSequences, 127/462 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