/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 00:44:37,498 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 00:44:37,579 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 00:44:37,585 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 00:44:37,586 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 00:44:37,614 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 00:44:37,615 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 00:44:37,615 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 00:44:37,616 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 00:44:37,619 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 00:44:37,619 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 00:44:37,620 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 00:44:37,620 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 00:44:37,621 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 00:44:37,621 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 00:44:37,621 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 00:44:37,622 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 00:44:37,622 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 00:44:37,622 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 00:44:37,622 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 00:44:37,623 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 00:44:37,623 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 00:44:37,624 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 00:44:37,624 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 00:44:37,624 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 00:44:37,624 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 00:44:37,625 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 00:44:37,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 00:44:37,625 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 00:44:37,625 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 00:44:37,626 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 00:44:37,626 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 00:44:37,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 00:44:37,626 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 00:44:37,627 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 00:44:37,627 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-24 00:44:37,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 00:44:37,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 00:44:37,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 00:44:37,954 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 00:44:37,956 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 00:44:37,957 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2023-08-24 00:44:39,059 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 00:44:39,262 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 00:44:39,262 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/bench-exp3x3.wvr.c [2023-08-24 00:44:39,270 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a738182ec/b24a550deabe47d49d8bbd5dbcb47c7c/FLAGab7383511 [2023-08-24 00:44:39,285 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a738182ec/b24a550deabe47d49d8bbd5dbcb47c7c [2023-08-24 00:44:39,289 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 00:44:39,290 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 00:44:39,291 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 00:44:39,291 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 00:44:39,303 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 00:44:39,304 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:44:39" (1/1) ... [2023-08-24 00:44:39,305 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@247feb38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:44:39, skipping insertion in model container [2023-08-24 00:44:39,306 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:44:39" (1/1) ... [2023-08-24 00:44:39,331 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 00:44:39,505 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/bench-exp3x3.wvr.c[2625,2638] [2023-08-24 00:44:39,510 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 00:44:39,521 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 00:44:39,557 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/bench-exp3x3.wvr.c[2625,2638] [2023-08-24 00:44:39,558 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 00:44:39,573 INFO L206 MainTranslator]: Completed translation [2023-08-24 00:44:39,574 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:44:39 WrapperNode [2023-08-24 00:44:39,574 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 00:44:39,575 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 00:44:39,575 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 00:44:39,575 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 00:44:39,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:44:39" (1/1) ... [2023-08-24 00:44:39,597 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:44:39" (1/1) ... [2023-08-24 00:44:39,627 INFO L138 Inliner]: procedures = 22, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 132 [2023-08-24 00:44:39,628 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 00:44:39,629 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 00:44:39,629 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 00:44:39,629 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 00:44:39,636 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:44:39" (1/1) ... [2023-08-24 00:44:39,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:44:39" (1/1) ... [2023-08-24 00:44:39,648 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:44:39" (1/1) ... [2023-08-24 00:44:39,649 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:44:39" (1/1) ... [2023-08-24 00:44:39,655 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:44:39" (1/1) ... [2023-08-24 00:44:39,666 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:44:39" (1/1) ... [2023-08-24 00:44:39,667 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:44:39" (1/1) ... [2023-08-24 00:44:39,668 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:44:39" (1/1) ... [2023-08-24 00:44:39,670 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 00:44:39,671 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 00:44:39,671 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 00:44:39,671 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 00:44:39,672 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:44:39" (1/1) ... [2023-08-24 00:44:39,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 00:44:39,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:44:39,701 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 00:44:39,723 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 00:44:39,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 00:44:39,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 00:44:39,741 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 00:44:39,741 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 00:44:39,741 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 00:44:39,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 00:44:39,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 00:44:39,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-24 00:44:39,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-24 00:44:39,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 00:44:39,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-08-24 00:44:39,742 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-08-24 00:44:39,742 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-08-24 00:44:39,743 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-08-24 00:44:39,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 00:44:39,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 00:44:39,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 00:44:39,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 00:44:39,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 00:44:39,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 00:44:39,745 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 00:44:39,857 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 00:44:39,859 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 00:44:40,175 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 00:44:40,182 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 00:44:40,183 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-24 00:44:40,184 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:44:40 BoogieIcfgContainer [2023-08-24 00:44:40,184 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 00:44:40,190 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 00:44:40,190 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 00:44:40,192 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 00:44:40,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 12:44:39" (1/3) ... [2023-08-24 00:44:40,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137925dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:44:40, skipping insertion in model container [2023-08-24 00:44:40,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:44:39" (2/3) ... [2023-08-24 00:44:40,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@137925dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:44:40, skipping insertion in model container [2023-08-24 00:44:40,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:44:40" (3/3) ... [2023-08-24 00:44:40,195 INFO L112 eAbstractionObserver]: Analyzing ICFG bench-exp3x3.wvr.c [2023-08-24 00:44:40,211 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 00:44:40,212 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 00:44:40,213 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 00:44:40,318 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-24 00:44:40,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 169 transitions, 386 flow [2023-08-24 00:44:40,444 INFO L124 PetriNetUnfolderBase]: 14/163 cut-off events. [2023-08-24 00:44:40,444 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 00:44:40,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 163 events. 14/163 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 65 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-08-24 00:44:40,454 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 169 transitions, 386 flow [2023-08-24 00:44:40,463 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 147 transitions, 330 flow [2023-08-24 00:44:40,466 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 00:44:40,477 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 152 places, 147 transitions, 330 flow [2023-08-24 00:44:40,483 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 152 places, 147 transitions, 330 flow [2023-08-24 00:44:40,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 147 transitions, 330 flow [2023-08-24 00:44:40,541 INFO L124 PetriNetUnfolderBase]: 14/147 cut-off events. [2023-08-24 00:44:40,542 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 00:44:40,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 147 events. 14/147 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 62 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 122. Up to 2 conditions per place. [2023-08-24 00:44:40,547 INFO L119 LiptonReduction]: Number of co-enabled transitions 2916 [2023-08-24 00:44:46,608 INFO L134 LiptonReduction]: Checked pairs total: 3523 [2023-08-24 00:44:46,609 INFO L136 LiptonReduction]: Total number of compositions: 126 [2023-08-24 00:44:46,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 00:44:46,626 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;@793c9cb1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 00:44:46,626 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-24 00:44:46,634 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 00:44:46,634 INFO L124 PetriNetUnfolderBase]: 6/36 cut-off events. [2023-08-24 00:44:46,635 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-24 00:44:46,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:44:46,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:44:46,636 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 00:44:46,640 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:44:46,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1406052379, now seen corresponding path program 1 times [2023-08-24 00:44:46,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:44:46,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27901496] [2023-08-24 00:44:46,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:44:46,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:44:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:44:47,503 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 00:44:47,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:44:47,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27901496] [2023-08-24 00:44:47,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27901496] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:44:47,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 00:44:47,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 00:44:47,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251389727] [2023-08-24 00:44:47,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:44:47,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 00:44:47,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:44:47,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 00:44:47,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 00:44:47,541 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 295 [2023-08-24 00:44:47,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 110 flow. Second operand has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 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 00:44:47,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:44:47,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 295 [2023-08-24 00:44:47,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:44:47,954 INFO L124 PetriNetUnfolderBase]: 3473/4229 cut-off events. [2023-08-24 00:44:47,954 INFO L125 PetriNetUnfolderBase]: For 247/247 co-relation queries the response was YES. [2023-08-24 00:44:47,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8842 conditions, 4229 events. 3473/4229 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 11612 event pairs, 837 based on Foata normal form. 1/2430 useless extension candidates. Maximal degree in co-relation 6136. Up to 3015 conditions per place. [2023-08-24 00:44:47,979 INFO L140 encePairwiseOnDemand]: 287/295 looper letters, 63 selfloop transitions, 7 changer transitions 1/71 dead transitions. [2023-08-24 00:44:47,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 71 transitions, 353 flow [2023-08-24 00:44:47,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 00:44:47,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 00:44:47,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2023-08-24 00:44:47,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745762711864407 [2023-08-24 00:44:47,992 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 420 transitions. [2023-08-24 00:44:47,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 420 transitions. [2023-08-24 00:44:47,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:44:47,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 420 transitions. [2023-08-24 00:44:47,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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 00:44:48,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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 00:44:48,004 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 295.0) internal successors, (1180), 4 states have internal predecessors, (1180), 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 00:44:48,005 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 110 flow. Second operand 3 states and 420 transitions. [2023-08-24 00:44:48,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 71 transitions, 353 flow [2023-08-24 00:44:48,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 71 transitions, 307 flow, removed 0 selfloop flow, removed 12 redundant places. [2023-08-24 00:44:48,014 INFO L231 Difference]: Finished difference. Result has 41 places, 43 transitions, 133 flow [2023-08-24 00:44:48,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=41, PETRI_TRANSITIONS=43} [2023-08-24 00:44:48,018 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -9 predicate places. [2023-08-24 00:44:48,019 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 43 transitions, 133 flow [2023-08-24 00:44:48,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.33333333333333) internal successors, (379), 3 states have internal predecessors, (379), 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 00:44:48,019 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:44:48,019 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:44:48,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 00:44:48,020 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 00:44:48,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:44:48,020 INFO L85 PathProgramCache]: Analyzing trace with hash 1369672065, now seen corresponding path program 1 times [2023-08-24 00:44:48,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:44:48,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390247577] [2023-08-24 00:44:48,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:44:48,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:44:48,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:44:48,272 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 00:44:48,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:44:48,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390247577] [2023-08-24 00:44:48,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390247577] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:44:48,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 00:44:48,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 00:44:48,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912570816] [2023-08-24 00:44:48,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:44:48,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 00:44:48,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:44:48,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 00:44:48,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 00:44:48,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 295 [2023-08-24 00:44:48,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 43 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 00:44:48,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:44:48,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 295 [2023-08-24 00:44:48,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:44:48,854 INFO L124 PetriNetUnfolderBase]: 5067/6189 cut-off events. [2023-08-24 00:44:48,854 INFO L125 PetriNetUnfolderBase]: For 2240/2240 co-relation queries the response was YES. [2023-08-24 00:44:48,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15972 conditions, 6189 events. 5067/6189 cut-off events. For 2240/2240 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19154 event pairs, 259 based on Foata normal form. 122/6311 useless extension candidates. Maximal degree in co-relation 4985. Up to 3157 conditions per place. [2023-08-24 00:44:48,888 INFO L140 encePairwiseOnDemand]: 290/295 looper letters, 116 selfloop transitions, 10 changer transitions 0/126 dead transitions. [2023-08-24 00:44:48,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 126 transitions, 621 flow [2023-08-24 00:44:48,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 00:44:48,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 00:44:48,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 746 transitions. [2023-08-24 00:44:48,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057627118644068 [2023-08-24 00:44:48,892 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 746 transitions. [2023-08-24 00:44:48,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 746 transitions. [2023-08-24 00:44:48,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:44:48,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 746 transitions. [2023-08-24 00:44:48,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.2) internal successors, (746), 5 states have internal predecessors, (746), 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 00:44:48,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 00:44:48,898 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 00:44:48,898 INFO L175 Difference]: Start difference. First operand has 41 places, 43 transitions, 133 flow. Second operand 5 states and 746 transitions. [2023-08-24 00:44:48,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 126 transitions, 621 flow [2023-08-24 00:44:48,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 126 transitions, 609 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 00:44:48,902 INFO L231 Difference]: Finished difference. Result has 46 places, 50 transitions, 191 flow [2023-08-24 00:44:48,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=191, PETRI_PLACES=46, PETRI_TRANSITIONS=50} [2023-08-24 00:44:48,903 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -4 predicate places. [2023-08-24 00:44:48,903 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 50 transitions, 191 flow [2023-08-24 00:44:48,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 00:44:48,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:44:48,904 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:44:48,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 00:44:48,904 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 00:44:48,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:44:48,905 INFO L85 PathProgramCache]: Analyzing trace with hash -388248143, now seen corresponding path program 1 times [2023-08-24 00:44:48,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:44:48,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145936002] [2023-08-24 00:44:48,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:44:48,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:44:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:44:49,081 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 00:44:49,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:44:49,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145936002] [2023-08-24 00:44:49,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145936002] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:44:49,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 00:44:49,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 00:44:49,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832809293] [2023-08-24 00:44:49,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:44:49,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 00:44:49,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:44:49,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 00:44:49,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 00:44:49,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 295 [2023-08-24 00:44:49,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 50 transitions, 191 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 00:44:49,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:44:49,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 295 [2023-08-24 00:44:49,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:44:49,608 INFO L124 PetriNetUnfolderBase]: 4881/6003 cut-off events. [2023-08-24 00:44:49,608 INFO L125 PetriNetUnfolderBase]: For 4584/4584 co-relation queries the response was YES. [2023-08-24 00:44:49,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16717 conditions, 6003 events. 4881/6003 cut-off events. For 4584/4584 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 19003 event pairs, 259 based on Foata normal form. 186/6189 useless extension candidates. Maximal degree in co-relation 7058. Up to 3157 conditions per place. [2023-08-24 00:44:49,643 INFO L140 encePairwiseOnDemand]: 290/295 looper letters, 116 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2023-08-24 00:44:49,643 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 124 transitions, 642 flow [2023-08-24 00:44:49,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 00:44:49,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 00:44:49,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 745 transitions. [2023-08-24 00:44:49,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5050847457627119 [2023-08-24 00:44:49,646 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 745 transitions. [2023-08-24 00:44:49,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 745 transitions. [2023-08-24 00:44:49,647 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:44:49,647 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 745 transitions. [2023-08-24 00:44:49,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.0) internal successors, (745), 5 states have internal predecessors, (745), 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 00:44:49,651 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 00:44:49,652 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 00:44:49,652 INFO L175 Difference]: Start difference. First operand has 46 places, 50 transitions, 191 flow. Second operand 5 states and 745 transitions. [2023-08-24 00:44:49,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 124 transitions, 642 flow [2023-08-24 00:44:49,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 124 transitions, 642 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 00:44:49,662 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 205 flow [2023-08-24 00:44:49,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=205, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2023-08-24 00:44:49,663 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-08-24 00:44:49,663 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 205 flow [2023-08-24 00:44:49,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 00:44:49,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:44:49,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:44:49,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 00:44:49,664 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 00:44:49,664 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:44:49,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1430537406, now seen corresponding path program 1 times [2023-08-24 00:44:49,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:44:49,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413928419] [2023-08-24 00:44:49,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:44:49,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:44:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:44:49,820 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 00:44:49,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:44:49,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413928419] [2023-08-24 00:44:49,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413928419] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:44:49,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148986492] [2023-08-24 00:44:49,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:44:49,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:44:49,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:44:49,829 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 00:44:49,854 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 00:44:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:44:49,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 00:44:49,960 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:44:50,085 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 00:44:50,085 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:44:50,141 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 00:44:50,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148986492] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:44:50,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 00:44:50,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-24 00:44:50,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180919757] [2023-08-24 00:44:50,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 00:44:50,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 00:44:50,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:44:50,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 00:44:50,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-24 00:44:50,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 295 [2023-08-24 00:44:50,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 205 flow. Second operand has 6 states, 6 states have (on average 133.33333333333334) internal successors, (800), 6 states have internal predecessors, (800), 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 00:44:50,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:44:50,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 295 [2023-08-24 00:44:50,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:44:51,059 INFO L124 PetriNetUnfolderBase]: 10865/13371 cut-off events. [2023-08-24 00:44:51,059 INFO L125 PetriNetUnfolderBase]: For 16553/16553 co-relation queries the response was YES. [2023-08-24 00:44:51,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39650 conditions, 13371 events. 10865/13371 cut-off events. For 16553/16553 co-relation queries the response was YES. Maximal size of possible extension queue 317. Compared 47176 event pairs, 2521 based on Foata normal form. 336/13707 useless extension candidates. Maximal degree in co-relation 19156. Up to 5541 conditions per place. [2023-08-24 00:44:51,139 INFO L140 encePairwiseOnDemand]: 290/295 looper letters, 138 selfloop transitions, 8 changer transitions 0/146 dead transitions. [2023-08-24 00:44:51,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 146 transitions, 898 flow [2023-08-24 00:44:51,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 00:44:51,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 00:44:51,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 748 transitions. [2023-08-24 00:44:51,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5071186440677966 [2023-08-24 00:44:51,142 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 748 transitions. [2023-08-24 00:44:51,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 748 transitions. [2023-08-24 00:44:51,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:44:51,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 748 transitions. [2023-08-24 00:44:51,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.6) internal successors, (748), 5 states have internal predecessors, (748), 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 00:44:51,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 00:44:51,147 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 00:44:51,147 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 205 flow. Second operand 5 states and 748 transitions. [2023-08-24 00:44:51,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 146 transitions, 898 flow [2023-08-24 00:44:51,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 146 transitions, 879 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 00:44:51,153 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 253 flow [2023-08-24 00:44:51,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=253, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2023-08-24 00:44:51,155 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 7 predicate places. [2023-08-24 00:44:51,155 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 253 flow [2023-08-24 00:44:51,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 133.33333333333334) internal successors, (800), 6 states have internal predecessors, (800), 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 00:44:51,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:44:51,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:44:51,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-24 00:44:51,361 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 00:44:51,362 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 00:44:51,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:44:51,362 INFO L85 PathProgramCache]: Analyzing trace with hash -204521481, now seen corresponding path program 2 times [2023-08-24 00:44:51,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:44:51,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906491963] [2023-08-24 00:44:51,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:44:51,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:44:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:44:51,519 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 00:44:51,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:44:51,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906491963] [2023-08-24 00:44:51,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906491963] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:44:51,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1240001250] [2023-08-24 00:44:51,520 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 00:44:51,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:44:51,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:44:51,522 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 00:44:51,533 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 00:44:51,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 00:44:51,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 00:44:51,678 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 00:44:51,680 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:44:51,786 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 00:44:51,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:44:51,830 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 00:44:51,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1240001250] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:44:51,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 00:44:51,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-24 00:44:51,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667410843] [2023-08-24 00:44:51,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 00:44:51,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 00:44:51,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:44:51,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 00:44:51,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-24 00:44:51,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 295 [2023-08-24 00:44:51,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 253 flow. Second operand has 6 states, 6 states have (on average 132.66666666666666) internal successors, (796), 6 states have internal predecessors, (796), 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 00:44:51,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:44:51,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 295 [2023-08-24 00:44:51,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:44:52,930 INFO L124 PetriNetUnfolderBase]: 13057/16015 cut-off events. [2023-08-24 00:44:52,930 INFO L125 PetriNetUnfolderBase]: For 28136/28136 co-relation queries the response was YES. [2023-08-24 00:44:52,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55836 conditions, 16015 events. 13057/16015 cut-off events. For 28136/28136 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 56951 event pairs, 4131 based on Foata normal form. 452/16467 useless extension candidates. Maximal degree in co-relation 28964. Up to 6947 conditions per place. [2023-08-24 00:44:53,019 INFO L140 encePairwiseOnDemand]: 290/295 looper letters, 134 selfloop transitions, 8 changer transitions 0/142 dead transitions. [2023-08-24 00:44:53,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 142 transitions, 885 flow [2023-08-24 00:44:53,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 00:44:53,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 00:44:53,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 746 transitions. [2023-08-24 00:44:53,021 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5057627118644068 [2023-08-24 00:44:53,022 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 746 transitions. [2023-08-24 00:44:53,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 746 transitions. [2023-08-24 00:44:53,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:44:53,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 746 transitions. [2023-08-24 00:44:53,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.2) internal successors, (746), 5 states have internal predecessors, (746), 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 00:44:53,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 00:44:53,026 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 00:44:53,027 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 253 flow. Second operand 5 states and 746 transitions. [2023-08-24 00:44:53,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 142 transitions, 885 flow [2023-08-24 00:44:53,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 142 transitions, 885 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 00:44:53,067 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 303 flow [2023-08-24 00:44:53,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=303, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-08-24 00:44:53,068 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 13 predicate places. [2023-08-24 00:44:53,068 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 303 flow [2023-08-24 00:44:53,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 132.66666666666666) internal successors, (796), 6 states have internal predecessors, (796), 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 00:44:53,068 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:44:53,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:44:53,079 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 00:44:53,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:44:53,275 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 00:44:53,275 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:44:53,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1843659482, now seen corresponding path program 1 times [2023-08-24 00:44:53,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:44:53,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74993378] [2023-08-24 00:44:53,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:44:53,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:44:53,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:44:53,440 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 00:44:53,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:44:53,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74993378] [2023-08-24 00:44:53,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74993378] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:44:53,440 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 00:44:53,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 00:44:53,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350765290] [2023-08-24 00:44:53,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:44:53,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 00:44:53,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:44:53,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 00:44:53,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 00:44:53,443 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 295 [2023-08-24 00:44:53,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 303 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 00:44:53,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:44:53,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 295 [2023-08-24 00:44:53,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:44:54,772 INFO L124 PetriNetUnfolderBase]: 12765/15723 cut-off events. [2023-08-24 00:44:54,773 INFO L125 PetriNetUnfolderBase]: For 35246/35246 co-relation queries the response was YES. [2023-08-24 00:44:54,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57810 conditions, 15723 events. 12765/15723 cut-off events. For 35246/35246 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 58854 event pairs, 471 based on Foata normal form. 292/16015 useless extension candidates. Maximal degree in co-relation 39073. Up to 6655 conditions per place. [2023-08-24 00:44:54,846 INFO L140 encePairwiseOnDemand]: 290/295 looper letters, 152 selfloop transitions, 10 changer transitions 0/162 dead transitions. [2023-08-24 00:44:54,847 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 162 transitions, 1185 flow [2023-08-24 00:44:54,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 00:44:54,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 00:44:54,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 742 transitions. [2023-08-24 00:44:54,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030508474576271 [2023-08-24 00:44:54,850 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 742 transitions. [2023-08-24 00:44:54,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 742 transitions. [2023-08-24 00:44:54,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:44:54,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 742 transitions. [2023-08-24 00:44:54,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 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 00:44:54,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 00:44:54,854 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 00:44:54,854 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 303 flow. Second operand 5 states and 742 transitions. [2023-08-24 00:44:54,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 162 transitions, 1185 flow [2023-08-24 00:44:54,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 162 transitions, 1156 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-24 00:44:54,917 INFO L231 Difference]: Finished difference. Result has 67 places, 62 transitions, 357 flow [2023-08-24 00:44:54,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=357, PETRI_PLACES=67, PETRI_TRANSITIONS=62} [2023-08-24 00:44:54,919 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 17 predicate places. [2023-08-24 00:44:54,920 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 62 transitions, 357 flow [2023-08-24 00:44:54,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 00:44:54,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:44:54,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:44:54,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 00:44:54,920 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 00:44:54,921 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:44:54,921 INFO L85 PathProgramCache]: Analyzing trace with hash 49168946, now seen corresponding path program 1 times [2023-08-24 00:44:54,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:44:54,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674450610] [2023-08-24 00:44:54,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:44:54,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:44:54,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:44:55,141 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 00:44:55,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:44:55,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674450610] [2023-08-24 00:44:55,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674450610] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:44:55,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899523088] [2023-08-24 00:44:55,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:44:55,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:44:55,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:44:55,150 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 00:44:55,172 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 00:44:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:44:55,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 00:44:55,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:44:55,394 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 00:44:55,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:44:55,457 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 00:44:55,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899523088] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:44:55,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 00:44:55,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-24 00:44:55,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520573954] [2023-08-24 00:44:55,459 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 00:44:55,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 00:44:55,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:44:55,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 00:44:55,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-24 00:44:55,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 295 [2023-08-24 00:44:55,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 62 transitions, 357 flow. Second operand has 6 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 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 00:44:55,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:44:55,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 295 [2023-08-24 00:44:55,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:44:57,716 INFO L124 PetriNetUnfolderBase]: 28973/35717 cut-off events. [2023-08-24 00:44:57,716 INFO L125 PetriNetUnfolderBase]: For 94890/94890 co-relation queries the response was YES. [2023-08-24 00:44:57,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 137761 conditions, 35717 events. 28973/35717 cut-off events. For 94890/94890 co-relation queries the response was YES. Maximal size of possible extension queue 976. Compared 145456 event pairs, 5739 based on Foata normal form. 900/36617 useless extension candidates. Maximal degree in co-relation 88518. Up to 15928 conditions per place. [2023-08-24 00:44:57,892 INFO L140 encePairwiseOnDemand]: 290/295 looper letters, 179 selfloop transitions, 8 changer transitions 0/187 dead transitions. [2023-08-24 00:44:57,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 187 transitions, 1478 flow [2023-08-24 00:44:57,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 00:44:57,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 00:44:57,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 740 transitions. [2023-08-24 00:44:57,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5016949152542373 [2023-08-24 00:44:57,895 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 740 transitions. [2023-08-24 00:44:57,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 740 transitions. [2023-08-24 00:44:57,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:44:57,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 740 transitions. [2023-08-24 00:44:57,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.0) internal successors, (740), 5 states have internal predecessors, (740), 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 00:44:57,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 00:44:57,901 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 00:44:57,901 INFO L175 Difference]: Start difference. First operand has 67 places, 62 transitions, 357 flow. Second operand 5 states and 740 transitions. [2023-08-24 00:44:57,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 187 transitions, 1478 flow [2023-08-24 00:44:57,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 187 transitions, 1430 flow, removed 16 selfloop flow, removed 1 redundant places. [2023-08-24 00:44:57,972 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 397 flow [2023-08-24 00:44:57,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=397, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2023-08-24 00:44:57,973 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 23 predicate places. [2023-08-24 00:44:57,973 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 397 flow [2023-08-24 00:44:57,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.33333333333334) internal successors, (806), 6 states have internal predecessors, (806), 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 00:44:57,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:44:57,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:44:57,981 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-24 00:44:58,179 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 00:44:58,180 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 00:44:58,180 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:44:58,180 INFO L85 PathProgramCache]: Analyzing trace with hash 757953015, now seen corresponding path program 1 times [2023-08-24 00:44:58,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:44:58,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581530874] [2023-08-24 00:44:58,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:44:58,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:44:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:44:58,477 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 00:44:58,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:44:58,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581530874] [2023-08-24 00:44:58,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581530874] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:44:58,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 00:44:58,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 00:44:58,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635085008] [2023-08-24 00:44:58,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:44:58,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 00:44:58,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:44:58,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 00:44:58,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 00:44:58,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 295 [2023-08-24 00:44:58,487 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 397 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 00:44:58,487 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:44:58,487 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 295 [2023-08-24 00:44:58,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:45:00,541 INFO L124 PetriNetUnfolderBase]: 28517/35261 cut-off events. [2023-08-24 00:45:00,541 INFO L125 PetriNetUnfolderBase]: For 98216/98216 co-relation queries the response was YES. [2023-08-24 00:45:00,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150029 conditions, 35261 events. 28517/35261 cut-off events. For 98216/98216 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 146629 event pairs, 1619 based on Foata normal form. 456/35717 useless extension candidates. Maximal degree in co-relation 99537. Up to 15472 conditions per place. [2023-08-24 00:45:00,713 INFO L140 encePairwiseOnDemand]: 290/295 looper letters, 186 selfloop transitions, 10 changer transitions 0/196 dead transitions. [2023-08-24 00:45:00,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 196 transitions, 1571 flow [2023-08-24 00:45:00,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 00:45:00,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 00:45:00,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 738 transitions. [2023-08-24 00:45:00,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5003389830508475 [2023-08-24 00:45:00,716 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 738 transitions. [2023-08-24 00:45:00,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 738 transitions. [2023-08-24 00:45:00,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:45:00,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 738 transitions. [2023-08-24 00:45:00,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.6) internal successors, (738), 5 states have internal predecessors, (738), 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 00:45:00,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 00:45:00,720 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 00:45:00,720 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 397 flow. Second operand 5 states and 738 transitions. [2023-08-24 00:45:00,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 196 transitions, 1571 flow [2023-08-24 00:45:00,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 196 transitions, 1571 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 00:45:00,993 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 460 flow [2023-08-24 00:45:00,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=460, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2023-08-24 00:45:00,993 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 28 predicate places. [2023-08-24 00:45:00,994 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 460 flow [2023-08-24 00:45:00,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 00:45:00,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:45:00,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:45:00,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 00:45:00,994 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 00:45:00,995 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:45:00,995 INFO L85 PathProgramCache]: Analyzing trace with hash -48523343, now seen corresponding path program 2 times [2023-08-24 00:45:00,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:45:00,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613564152] [2023-08-24 00:45:00,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:45:00,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:45:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:45:01,174 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 00:45:01,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:45:01,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613564152] [2023-08-24 00:45:01,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613564152] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:45:01,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 00:45:01,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 00:45:01,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774233326] [2023-08-24 00:45:01,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:45:01,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 00:45:01,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:45:01,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 00:45:01,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 00:45:01,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 295 [2023-08-24 00:45:01,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 460 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 00:45:01,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:45:01,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 295 [2023-08-24 00:45:01,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:45:03,868 INFO L124 PetriNetUnfolderBase]: 32569/40201 cut-off events. [2023-08-24 00:45:03,868 INFO L125 PetriNetUnfolderBase]: For 118580/118580 co-relation queries the response was YES. [2023-08-24 00:45:03,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178904 conditions, 40201 events. 32569/40201 cut-off events. For 118580/118580 co-relation queries the response was YES. Maximal size of possible extension queue 1053. Compared 166776 event pairs, 5319 based on Foata normal form. 888/41089 useless extension candidates. Maximal degree in co-relation 118526. Up to 23661 conditions per place. [2023-08-24 00:45:04,075 INFO L140 encePairwiseOnDemand]: 290/295 looper letters, 178 selfloop transitions, 10 changer transitions 0/188 dead transitions. [2023-08-24 00:45:04,075 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 188 transitions, 1539 flow [2023-08-24 00:45:04,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 00:45:04,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 00:45:04,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 734 transitions. [2023-08-24 00:45:04,078 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4976271186440678 [2023-08-24 00:45:04,078 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 734 transitions. [2023-08-24 00:45:04,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 734 transitions. [2023-08-24 00:45:04,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:45:04,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 734 transitions. [2023-08-24 00:45:04,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.8) internal successors, (734), 5 states have internal predecessors, (734), 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 00:45:04,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 00:45:04,083 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 00:45:04,083 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 460 flow. Second operand 5 states and 734 transitions. [2023-08-24 00:45:04,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 188 transitions, 1539 flow [2023-08-24 00:45:04,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 188 transitions, 1524 flow, removed 4 selfloop flow, removed 1 redundant places. [2023-08-24 00:45:04,490 INFO L231 Difference]: Finished difference. Result has 83 places, 75 transitions, 499 flow [2023-08-24 00:45:04,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=445, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=499, PETRI_PLACES=83, PETRI_TRANSITIONS=75} [2023-08-24 00:45:04,490 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 33 predicate places. [2023-08-24 00:45:04,490 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 75 transitions, 499 flow [2023-08-24 00:45:04,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 00:45:04,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:45:04,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:45:04,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 00:45:04,491 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 00:45:04,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:45:04,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1305311766, now seen corresponding path program 2 times [2023-08-24 00:45:04,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:45:04,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734782963] [2023-08-24 00:45:04,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:45:04,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:45:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:45:04,659 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 00:45:04,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:45:04,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734782963] [2023-08-24 00:45:04,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734782963] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:45:04,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 00:45:04,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 00:45:04,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575888397] [2023-08-24 00:45:04,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:45:04,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 00:45:04,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:45:04,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 00:45:04,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 00:45:04,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 295 [2023-08-24 00:45:04,662 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 75 transitions, 499 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 00:45:04,662 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:45:04,662 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 295 [2023-08-24 00:45:04,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:45:06,940 INFO L124 PetriNetUnfolderBase]: 28961/35681 cut-off events. [2023-08-24 00:45:06,940 INFO L125 PetriNetUnfolderBase]: For 113304/113304 co-relation queries the response was YES. [2023-08-24 00:45:07,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165857 conditions, 35681 events. 28961/35681 cut-off events. For 113304/113304 co-relation queries the response was YES. Maximal size of possible extension queue 907. Compared 145276 event pairs, 1643 based on Foata normal form. 444/36125 useless extension candidates. Maximal degree in co-relation 145228. Up to 15910 conditions per place. [2023-08-24 00:45:07,138 INFO L140 encePairwiseOnDemand]: 290/295 looper letters, 187 selfloop transitions, 9 changer transitions 0/196 dead transitions. [2023-08-24 00:45:07,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 196 transitions, 1625 flow [2023-08-24 00:45:07,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 00:45:07,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 00:45:07,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 737 transitions. [2023-08-24 00:45:07,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49966101694915255 [2023-08-24 00:45:07,143 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 737 transitions. [2023-08-24 00:45:07,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 737 transitions. [2023-08-24 00:45:07,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:45:07,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 737 transitions. [2023-08-24 00:45:07,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.4) internal successors, (737), 5 states have internal predecessors, (737), 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 00:45:07,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 00:45:07,147 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 00:45:07,147 INFO L175 Difference]: Start difference. First operand has 83 places, 75 transitions, 499 flow. Second operand 5 states and 737 transitions. [2023-08-24 00:45:07,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 196 transitions, 1625 flow [2023-08-24 00:45:07,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 196 transitions, 1601 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-08-24 00:45:07,883 INFO L231 Difference]: Finished difference. Result has 86 places, 74 transitions, 490 flow [2023-08-24 00:45:07,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=490, PETRI_PLACES=86, PETRI_TRANSITIONS=74} [2023-08-24 00:45:07,884 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 36 predicate places. [2023-08-24 00:45:07,884 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 74 transitions, 490 flow [2023-08-24 00:45:07,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 00:45:07,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:45:07,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:45:07,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 00:45:07,885 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 00:45:07,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:45:07,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1522859476, now seen corresponding path program 2 times [2023-08-24 00:45:07,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:45:07,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13309589] [2023-08-24 00:45:07,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:45:07,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:45:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:45:08,017 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 00:45:08,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:45:08,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13309589] [2023-08-24 00:45:08,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13309589] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:45:08,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 00:45:08,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 00:45:08,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843366608] [2023-08-24 00:45:08,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:45:08,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 00:45:08,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:45:08,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 00:45:08,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 00:45:08,019 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 295 [2023-08-24 00:45:08,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 74 transitions, 490 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 00:45:08,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:45:08,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 295 [2023-08-24 00:45:08,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:45:09,918 INFO L124 PetriNetUnfolderBase]: 24413/29993 cut-off events. [2023-08-24 00:45:09,918 INFO L125 PetriNetUnfolderBase]: For 112055/112055 co-relation queries the response was YES. [2023-08-24 00:45:09,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139706 conditions, 29993 events. 24413/29993 cut-off events. For 112055/112055 co-relation queries the response was YES. Maximal size of possible extension queue 762. Compared 122857 event pairs, 885 based on Foata normal form. 508/30501 useless extension candidates. Maximal degree in co-relation 122129. Up to 13182 conditions per place. [2023-08-24 00:45:10,081 INFO L140 encePairwiseOnDemand]: 290/295 looper letters, 198 selfloop transitions, 9 changer transitions 0/207 dead transitions. [2023-08-24 00:45:10,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 207 transitions, 1776 flow [2023-08-24 00:45:10,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 00:45:10,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 00:45:10,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 741 transitions. [2023-08-24 00:45:10,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5023728813559322 [2023-08-24 00:45:10,083 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 741 transitions. [2023-08-24 00:45:10,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 741 transitions. [2023-08-24 00:45:10,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:45:10,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 741 transitions. [2023-08-24 00:45:10,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 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 00:45:10,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 00:45:10,088 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 00:45:10,088 INFO L175 Difference]: Start difference. First operand has 86 places, 74 transitions, 490 flow. Second operand 5 states and 741 transitions. [2023-08-24 00:45:10,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 207 transitions, 1776 flow [2023-08-24 00:45:10,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 207 transitions, 1739 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-24 00:45:10,468 INFO L231 Difference]: Finished difference. Result has 90 places, 73 transitions, 494 flow [2023-08-24 00:45:10,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=494, PETRI_PLACES=90, PETRI_TRANSITIONS=73} [2023-08-24 00:45:10,468 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 40 predicate places. [2023-08-24 00:45:10,469 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 73 transitions, 494 flow [2023-08-24 00:45:10,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 00:45:10,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:45:10,472 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:45:10,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 00:45:10,473 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 00:45:10,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:45:10,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1825918594, now seen corresponding path program 2 times [2023-08-24 00:45:10,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:45:10,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260835851] [2023-08-24 00:45:10,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:45:10,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:45:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:45:10,609 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 00:45:10,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:45:10,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260835851] [2023-08-24 00:45:10,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260835851] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:45:10,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10196431] [2023-08-24 00:45:10,610 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 00:45:10,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:45:10,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:45:10,611 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 00:45:10,613 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 00:45:10,768 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 00:45:10,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 00:45:10,770 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 00:45:10,772 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:45:10,902 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 00:45:10,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:45:10,972 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 00:45:10,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10196431] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:45:10,972 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 00:45:10,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-24 00:45:10,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772358305] [2023-08-24 00:45:10,974 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 00:45:10,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 00:45:10,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:45:10,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 00:45:10,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-24 00:45:10,976 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 295 [2023-08-24 00:45:10,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 73 transitions, 494 flow. Second operand has 6 states, 6 states have (on average 135.33333333333334) internal successors, (812), 6 states have internal predecessors, (812), 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 00:45:10,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:45:10,977 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 295 [2023-08-24 00:45:10,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:45:13,237 INFO L124 PetriNetUnfolderBase]: 29277/35873 cut-off events. [2023-08-24 00:45:13,237 INFO L125 PetriNetUnfolderBase]: For 124698/124698 co-relation queries the response was YES. [2023-08-24 00:45:13,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170952 conditions, 35873 events. 29277/35873 cut-off events. For 124698/124698 co-relation queries the response was YES. Maximal size of possible extension queue 874. Compared 145192 event pairs, 5255 based on Foata normal form. 1016/36889 useless extension candidates. Maximal degree in co-relation 153598. Up to 20069 conditions per place. [2023-08-24 00:45:13,658 INFO L140 encePairwiseOnDemand]: 290/295 looper letters, 193 selfloop transitions, 8 changer transitions 0/201 dead transitions. [2023-08-24 00:45:13,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 201 transitions, 1711 flow [2023-08-24 00:45:13,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 00:45:13,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 00:45:13,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 738 transitions. [2023-08-24 00:45:13,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5003389830508475 [2023-08-24 00:45:13,661 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 738 transitions. [2023-08-24 00:45:13,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 738 transitions. [2023-08-24 00:45:13,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:45:13,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 738 transitions. [2023-08-24 00:45:13,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.6) internal successors, (738), 5 states have internal predecessors, (738), 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 00:45:13,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 00:45:13,665 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 00:45:13,665 INFO L175 Difference]: Start difference. First operand has 90 places, 73 transitions, 494 flow. Second operand 5 states and 738 transitions. [2023-08-24 00:45:13,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 201 transitions, 1711 flow [2023-08-24 00:45:13,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 201 transitions, 1702 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 00:45:13,864 INFO L231 Difference]: Finished difference. Result has 95 places, 76 transitions, 535 flow [2023-08-24 00:45:13,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=485, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=535, PETRI_PLACES=95, PETRI_TRANSITIONS=76} [2023-08-24 00:45:13,864 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 45 predicate places. [2023-08-24 00:45:13,864 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 76 transitions, 535 flow [2023-08-24 00:45:13,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.33333333333334) internal successors, (812), 6 states have internal predecessors, (812), 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 00:45:13,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:45:13,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:45:13,871 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 00:45:14,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:45:14,070 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 00:45:14,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:45:14,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1783679507, now seen corresponding path program 2 times [2023-08-24 00:45:14,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:45:14,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385380633] [2023-08-24 00:45:14,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:45:14,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:45:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:45:14,196 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 00:45:14,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:45:14,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385380633] [2023-08-24 00:45:14,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385380633] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 00:45:14,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 00:45:14,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 00:45:14,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927640023] [2023-08-24 00:45:14,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 00:45:14,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 00:45:14,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:45:14,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 00:45:14,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 00:45:14,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 295 [2023-08-24 00:45:14,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 76 transitions, 535 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 00:45:14,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:45:14,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 295 [2023-08-24 00:45:14,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:45:17,200 INFO L124 PetriNetUnfolderBase]: 33421/40853 cut-off events. [2023-08-24 00:45:17,201 INFO L125 PetriNetUnfolderBase]: For 170067/170067 co-relation queries the response was YES. [2023-08-24 00:45:17,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204727 conditions, 40853 events. 33421/40853 cut-off events. For 170067/170067 co-relation queries the response was YES. Maximal size of possible extension queue 989. Compared 162364 event pairs, 10579 based on Foata normal form. 836/41689 useless extension candidates. Maximal degree in co-relation 184652. Up to 23061 conditions per place. [2023-08-24 00:45:17,466 INFO L140 encePairwiseOnDemand]: 290/295 looper letters, 209 selfloop transitions, 8 changer transitions 0/217 dead transitions. [2023-08-24 00:45:17,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 217 transitions, 1913 flow [2023-08-24 00:45:17,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 00:45:17,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 00:45:17,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 742 transitions. [2023-08-24 00:45:17,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5030508474576271 [2023-08-24 00:45:17,468 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 742 transitions. [2023-08-24 00:45:17,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 742 transitions. [2023-08-24 00:45:17,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:45:17,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 742 transitions. [2023-08-24 00:45:17,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.4) internal successors, (742), 5 states have internal predecessors, (742), 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 00:45:17,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 00:45:17,473 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 295.0) internal successors, (1770), 6 states have internal predecessors, (1770), 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 00:45:17,473 INFO L175 Difference]: Start difference. First operand has 95 places, 76 transitions, 535 flow. Second operand 5 states and 742 transitions. [2023-08-24 00:45:17,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 217 transitions, 1913 flow [2023-08-24 00:45:17,891 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 217 transitions, 1835 flow, removed 28 selfloop flow, removed 2 redundant places. [2023-08-24 00:45:17,893 INFO L231 Difference]: Finished difference. Result has 99 places, 79 transitions, 568 flow [2023-08-24 00:45:17,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=511, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=568, PETRI_PLACES=99, PETRI_TRANSITIONS=79} [2023-08-24 00:45:17,894 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 49 predicate places. [2023-08-24 00:45:17,894 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 79 transitions, 568 flow [2023-08-24 00:45:17,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 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 00:45:17,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:45:17,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:45:17,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-24 00:45:17,895 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 00:45:17,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:45:17,895 INFO L85 PathProgramCache]: Analyzing trace with hash 505429562, now seen corresponding path program 1 times [2023-08-24 00:45:17,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:45:17,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872663909] [2023-08-24 00:45:17,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:45:17,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:45:17,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:45:18,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 00:45:18,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:45:18,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872663909] [2023-08-24 00:45:18,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872663909] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:45:18,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49060902] [2023-08-24 00:45:18,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:45:18,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:45:18,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:45:18,805 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 00:45:18,814 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 00:45:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:45:19,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-24 00:45:19,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:46:56,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 00:46:56,398 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:47:21,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 00:47:21,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49060902] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:47:21,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 00:47:21,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 15 [2023-08-24 00:47:21,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902202730] [2023-08-24 00:47:21,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 00:47:21,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-24 00:47:21,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:47:21,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-24 00:47:21,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=184, Unknown=33, NotChecked=0, Total=272 [2023-08-24 00:47:21,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 295 [2023-08-24 00:47:21,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 79 transitions, 568 flow. Second operand has 17 states, 17 states have (on average 119.17647058823529) internal successors, (2026), 17 states have internal predecessors, (2026), 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 00:47:21,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:47:21,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 295 [2023-08-24 00:47:21,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:47:25,760 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 00:47:36,701 WARN L234 SmtUtils]: Spent 9.95s on a formula simplification. DAG size of input: 82 DAG size of output: 54 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 00:48:35,503 WARN L234 SmtUtils]: Spent 56.29s on a formula simplification. DAG size of input: 98 DAG size of output: 61 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 00:48:37,913 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:48:56,522 WARN L234 SmtUtils]: Spent 8.34s on a formula simplification. DAG size of input: 65 DAG size of output: 61 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 00:48:58,647 WARN L539 Checker$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 00:49:00,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:49:02,153 WARN L539 Checker$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 00:49:04,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:49:06,344 WARN L539 Checker$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 00:49:08,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:49:19,653 WARN L539 Checker$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 00:49:22,176 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:49:26,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:49:28,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:49:30,288 WARN L539 Checker$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 00:49:32,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:49:41,203 WARN L234 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 62 DAG size of output: 56 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 00:49:50,166 WARN L539 Checker$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 00:49:52,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:49:55,479 WARN L539 Checker$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 00:50:07,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 00:50:09,728 WARN L539 Checker$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 00:50:16,523 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 00:50:19,436 INFO L124 PetriNetUnfolderBase]: 54989/67853 cut-off events. [2023-08-24 00:50:19,437 INFO L125 PetriNetUnfolderBase]: For 255772/255772 co-relation queries the response was YES. [2023-08-24 00:50:19,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337880 conditions, 67853 events. 54989/67853 cut-off events. For 255772/255772 co-relation queries the response was YES. Maximal size of possible extension queue 1621. Compared 300530 event pairs, 7685 based on Foata normal form. 68/67921 useless extension candidates. Maximal degree in co-relation 309562. Up to 46451 conditions per place. [2023-08-24 00:50:19,976 INFO L140 encePairwiseOnDemand]: 270/295 looper letters, 484 selfloop transitions, 264 changer transitions 27/775 dead transitions. [2023-08-24 00:50:19,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 775 transitions, 6533 flow [2023-08-24 00:50:19,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-24 00:50:19,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-24 00:50:19,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2881 transitions. [2023-08-24 00:50:19,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46505246166263114 [2023-08-24 00:50:19,983 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2881 transitions. [2023-08-24 00:50:19,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2881 transitions. [2023-08-24 00:50:19,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:50:19,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2881 transitions. [2023-08-24 00:50:19,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 137.1904761904762) internal successors, (2881), 21 states have internal predecessors, (2881), 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 00:50:19,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 295.0) internal successors, (6490), 22 states have internal predecessors, (6490), 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 00:50:19,999 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 295.0) internal successors, (6490), 22 states have internal predecessors, (6490), 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 00:50:19,999 INFO L175 Difference]: Start difference. First operand has 99 places, 79 transitions, 568 flow. Second operand 21 states and 2881 transitions. [2023-08-24 00:50:19,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 775 transitions, 6533 flow [2023-08-24 00:50:21,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 775 transitions, 6360 flow, removed 66 selfloop flow, removed 1 redundant places. [2023-08-24 00:50:21,605 INFO L231 Difference]: Finished difference. Result has 127 places, 346 transitions, 3594 flow [2023-08-24 00:50:21,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3594, PETRI_PLACES=127, PETRI_TRANSITIONS=346} [2023-08-24 00:50:21,606 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 77 predicate places. [2023-08-24 00:50:21,606 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 346 transitions, 3594 flow [2023-08-24 00:50:21,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 119.17647058823529) internal successors, (2026), 17 states have internal predecessors, (2026), 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 00:50:21,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:50:21,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:50:21,615 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 00:50:21,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-24 00:50:21,814 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 00:50:21,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:50:21,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1464858319, now seen corresponding path program 1 times [2023-08-24 00:50:21,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:50:21,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228902764] [2023-08-24 00:50:21,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:50:21,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:50:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:50:22,506 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 00:50:22,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:50:22,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228902764] [2023-08-24 00:50:22,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228902764] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:50:22,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932414755] [2023-08-24 00:50:22,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:50:22,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:50:22,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:50:22,508 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 00:50:22,510 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 00:50:23,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:50:23,075 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-24 00:50:23,077 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:50:34,046 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 00:50:34,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:50:40,020 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 00:50:40,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932414755] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:50:40,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 00:50:40,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-08-24 00:50:40,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677176472] [2023-08-24 00:50:40,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 00:50:40,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 00:50:40,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:50:40,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 00:50:40,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=168, Unknown=3, NotChecked=0, Total=240 [2023-08-24 00:50:40,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 295 [2023-08-24 00:50:40,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 346 transitions, 3594 flow. Second operand has 16 states, 16 states have (on average 119.6875) internal successors, (1915), 16 states have internal predecessors, (1915), 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 00:50:40,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:50:40,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 295 [2023-08-24 00:50:40,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:50:53,058 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 00:50:55,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:50:58,630 WARN L539 Checker$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 00:51:00,637 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:51:02,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:51:04,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:51:06,417 WARN L539 Checker$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 00:51:12,095 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 00:51:14,101 WARN L539 Checker$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 00:51:19,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:51:21,156 WARN L539 Checker$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 00:51:23,309 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:51:26,622 WARN L539 Checker$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 00:51:29,732 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:51:35,369 WARN L539 Checker$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 00:51:38,112 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:51:40,122 WARN L539 Checker$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 00:51:41,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:51:43,613 WARN L539 Checker$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 00:51:45,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:51:54,668 WARN L539 Checker$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 00:51:56,677 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 00:51:58,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 00:52:00,693 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:52:02,700 WARN L539 Checker$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 00:52:06,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:52:09,208 WARN L539 Checker$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 00:52:12,101 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:52:14,113 WARN L539 Checker$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 00:52:15,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:52:17,802 WARN L539 Checker$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 00:52:28,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:52:30,546 WARN L539 Checker$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 00:52:32,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:52:34,898 WARN L539 Checker$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 00:52:37,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 00:52:39,889 WARN L539 Checker$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 00:52:43,505 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:52:45,510 WARN L539 Checker$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 00:52:48,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 00:52:50,689 WARN L539 Checker$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 00:52:52,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:52:54,725 WARN L539 Checker$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 00:52:57,652 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:52:59,656 WARN L539 Checker$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 00:53:03,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 00:53:06,913 WARN L539 Checker$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 00:53:06,941 INFO L124 PetriNetUnfolderBase]: 68634/85010 cut-off events. [2023-08-24 00:53:06,941 INFO L125 PetriNetUnfolderBase]: For 422877/422877 co-relation queries the response was YES. [2023-08-24 00:53:07,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494225 conditions, 85010 events. 68634/85010 cut-off events. For 422877/422877 co-relation queries the response was YES. Maximal size of possible extension queue 2085. Compared 396255 event pairs, 7902 based on Foata normal form. 91/85101 useless extension candidates. Maximal degree in co-relation 490980. Up to 70511 conditions per place. [2023-08-24 00:53:08,089 INFO L140 encePairwiseOnDemand]: 274/295 looper letters, 678 selfloop transitions, 157 changer transitions 24/859 dead transitions. [2023-08-24 00:53:08,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 859 transitions, 8925 flow [2023-08-24 00:53:08,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-24 00:53:08,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-24 00:53:08,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2356 transitions. [2023-08-24 00:53:08,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46979062811565303 [2023-08-24 00:53:08,096 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2356 transitions. [2023-08-24 00:53:08,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2356 transitions. [2023-08-24 00:53:08,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:53:08,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2356 transitions. [2023-08-24 00:53:08,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 138.58823529411765) internal successors, (2356), 17 states have internal predecessors, (2356), 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 00:53:08,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 295.0) internal successors, (5310), 18 states have internal predecessors, (5310), 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 00:53:08,109 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 295.0) internal successors, (5310), 18 states have internal predecessors, (5310), 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 00:53:08,109 INFO L175 Difference]: Start difference. First operand has 127 places, 346 transitions, 3594 flow. Second operand 17 states and 2356 transitions. [2023-08-24 00:53:08,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 859 transitions, 8925 flow [2023-08-24 00:53:12,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 859 transitions, 8550 flow, removed 184 selfloop flow, removed 1 redundant places. [2023-08-24 00:53:12,194 INFO L231 Difference]: Finished difference. Result has 154 places, 499 transitions, 5400 flow [2023-08-24 00:53:12,195 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=3219, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5400, PETRI_PLACES=154, PETRI_TRANSITIONS=499} [2023-08-24 00:53:12,195 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 104 predicate places. [2023-08-24 00:53:12,195 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 499 transitions, 5400 flow [2023-08-24 00:53:12,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 119.6875) internal successors, (1915), 16 states have internal predecessors, (1915), 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 00:53:12,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:53:12,196 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:53:12,201 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 00:53:12,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-24 00:53:12,396 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 00:53:12,397 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:53:12,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1235535718, now seen corresponding path program 2 times [2023-08-24 00:53:12,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:53:12,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186442766] [2023-08-24 00:53:12,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:53:12,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:53:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:53:13,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 00:53:13,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:53:13,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186442766] [2023-08-24 00:53:13,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1186442766] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:53:13,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696516052] [2023-08-24 00:53:13,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 00:53:13,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:53:13,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:53:13,063 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 00:53:13,065 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 00:53:13,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 00:53:13,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 00:53:13,357 INFO L262 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-24 00:53:13,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:53:43,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 00:53:43,609 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 00:54:06,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 00:54:06,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696516052] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 00:54:06,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 00:54:06,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 13 [2023-08-24 00:54:06,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634337006] [2023-08-24 00:54:06,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 00:54:06,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-24 00:54:06,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 00:54:06,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-24 00:54:06,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=137, Unknown=23, NotChecked=0, Total=210 [2023-08-24 00:54:06,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 295 [2023-08-24 00:54:06,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 499 transitions, 5400 flow. Second operand has 15 states, 15 states have (on average 120.33333333333333) internal successors, (1805), 15 states have internal predecessors, (1805), 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 00:54:06,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 00:54:06,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 295 [2023-08-24 00:54:06,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 00:54:10,553 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:54:11,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:54:13,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.24s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:54:15,967 WARN L539 Checker$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 00:54:18,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:54:20,708 WARN L539 Checker$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 00:54:22,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:54:32,218 WARN L539 Checker$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 00:54:35,423 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:54:37,583 WARN L539 Checker$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 00:54:40,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:54:42,548 WARN L539 Checker$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 00:54:50,687 WARN L234 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 69 DAG size of output: 60 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 00:55:00,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:55:11,109 WARN L539 Checker$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 00:55:13,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:55:14,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:55:17,122 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:55:23,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:55:42,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:55:48,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-08-24 00:55:49,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-08-24 00:55:52,543 INFO L124 PetriNetUnfolderBase]: 90567/112157 cut-off events. [2023-08-24 00:55:52,544 INFO L125 PetriNetUnfolderBase]: For 791295/791295 co-relation queries the response was YES. [2023-08-24 00:55:53,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727660 conditions, 112157 events. 90567/112157 cut-off events. For 791295/791295 co-relation queries the response was YES. Maximal size of possible extension queue 2908. Compared 540470 event pairs, 8653 based on Foata normal form. 253/112410 useless extension candidates. Maximal degree in co-relation 724452. Up to 87578 conditions per place. [2023-08-24 00:55:54,377 INFO L140 encePairwiseOnDemand]: 274/295 looper letters, 891 selfloop transitions, 395 changer transitions 18/1304 dead transitions. [2023-08-24 00:55:54,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 1304 transitions, 15664 flow [2023-08-24 00:55:54,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-24 00:55:54,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-24 00:55:54,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3486 transitions. [2023-08-24 00:55:54,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4544980443285528 [2023-08-24 00:55:54,382 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3486 transitions. [2023-08-24 00:55:54,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3486 transitions. [2023-08-24 00:55:54,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 00:55:54,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3486 transitions. [2023-08-24 00:55:54,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 134.07692307692307) internal successors, (3486), 26 states have internal predecessors, (3486), 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 00:55:54,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 295.0) internal successors, (7965), 27 states have internal predecessors, (7965), 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 00:55:54,395 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 295.0) internal successors, (7965), 27 states have internal predecessors, (7965), 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 00:55:54,395 INFO L175 Difference]: Start difference. First operand has 154 places, 499 transitions, 5400 flow. Second operand 26 states and 3486 transitions. [2023-08-24 00:55:54,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 1304 transitions, 15664 flow [2023-08-24 00:56:02,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 1304 transitions, 15255 flow, removed 201 selfloop flow, removed 1 redundant places. [2023-08-24 00:56:02,025 INFO L231 Difference]: Finished difference. Result has 189 places, 858 transitions, 10679 flow [2023-08-24 00:56:02,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=295, PETRI_DIFFERENCE_MINUEND_FLOW=4991, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=10679, PETRI_PLACES=189, PETRI_TRANSITIONS=858} [2023-08-24 00:56:02,026 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 139 predicate places. [2023-08-24 00:56:02,026 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 858 transitions, 10679 flow [2023-08-24 00:56:02,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 120.33333333333333) internal successors, (1805), 15 states have internal predecessors, (1805), 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 00:56:02,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 00:56:02,026 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 00:56:02,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-24 00:56:02,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:56:02,227 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-24 00:56:02,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 00:56:02,228 INFO L85 PathProgramCache]: Analyzing trace with hash -566688882, now seen corresponding path program 3 times [2023-08-24 00:56:02,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 00:56:02,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339892168] [2023-08-24 00:56:02,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 00:56:02,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 00:56:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 00:56:02,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 00:56:02,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 00:56:02,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339892168] [2023-08-24 00:56:02,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339892168] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 00:56:02,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585125947] [2023-08-24 00:56:02,453 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 00:56:02,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 00:56:02,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 00:56:02,457 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 00:56:02,489 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 00:56:09,613 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 00:56:09,614 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 00:56:09,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 20 conjunts are in the unsatisfiable core [2023-08-24 00:56:09,619 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 00:57:09,221 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse6 (div (* (- 1) c_~x6~0) 2))) (let ((.cse0 (mod (div (* (- 1) .cse6) 2) 4294967296))) (let ((.cse1 (mod c_~x1~0 4294967296)) (.cse2 (mod c_~x3~0 4294967296)) (.cse4 (mod c_~x5~0 4294967296)) (.cse3 (+ (mod (* .cse6 4294967295) 4294967296) 1)) (.cse5 (+ .cse0 1)) (.cse7 (mod c_~x6~0 4294967296))) (and (= .cse0 (mod (* 4294967295 (div (* (- 1) c_~x5~0) 2)) 4294967296)) (< 0 .cse1) (= .cse1 (mod c_~x2~0 4294967296)) (= .cse2 (mod c_~x4~0 4294967296)) (<= .cse3 .cse4) (< 0 .cse2) (= (mod c_~x6~0 2) 0) (= (mod c_~x5~0 2) 0) (<= .cse5 .cse4) (= (mod .cse6 2) 0) (<= .cse3 .cse7) (<= .cse5 .cse7))))) is different from false [2023-08-24 00:57:50,931 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (div (* (- 1) c_~x6~0) 2))) (let ((.cse1 (mod c_~x1~0 4294967296)) (.cse2 (+ (mod (* .cse3 4294967295) 4294967296) 1)) (.cse0 (mod (div (* (- 1) .cse3) 2) 4294967296)) (.cse4 (mod c_~x6~0 4294967296))) (and (= .cse0 (mod (* 4294967295 (div (* (- 1) c_~x5~0) 2)) 4294967296)) (< 0 .cse1) (= .cse1 (mod c_~x2~0 4294967296)) (<= .cse2 (mod c_~x5~0 4294967296)) (< 0 (mod c_~x3~0 4294967296)) (= (mod c_~x6~0 2) 0) (= (mod c_~x5~0 2) 0) (= (mod .cse3 2) 0) (<= .cse2 .cse4) (<= (+ .cse0 1) .cse4)))) is different from false Received shutdown request... [2023-08-24 00:58:48,363 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 00:58:48,363 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 00:58:49,152 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-24 00:58:49,154 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-24 00:58:49,161 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 00:58:49,354 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,SelfDestructingSolverStorable16 [2023-08-24 00:58:49,355 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 1ms.. [2023-08-24 00:58:49,356 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2023-08-24 00:58:49,356 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-24 00:58:49,356 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-24 00:58:49,356 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-24 00:58:49,356 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-24 00:58:49,356 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2023-08-24 00:58:49,357 INFO L445 BasicCegarLoop]: Path program histogram: [3, 2, 2, 2, 2, 2, 2, 1, 1] [2023-08-24 00:58:49,359 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 00:58:49,359 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 00:58:49,362 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 12:58:49 BasicIcfg [2023-08-24 00:58:49,362 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 00:58:49,362 INFO L158 Benchmark]: Toolchain (without parser) took 850072.28ms. Allocated memory was 388.0MB in the beginning and 13.2GB in the end (delta: 12.8GB). Free memory was 363.7MB in the beginning and 8.3GB in the end (delta: -7.9GB). Peak memory consumption was 4.9GB. Max. memory is 16.0GB. [2023-08-24 00:58:49,362 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 388.0MB. Free memory is still 364.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 00:58:49,363 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.27ms. Allocated memory is still 388.0MB. Free memory was 363.7MB in the beginning and 352.1MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 00:58:49,363 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.77ms. Allocated memory is still 388.0MB. Free memory was 352.1MB in the beginning and 350.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 00:58:49,363 INFO L158 Benchmark]: Boogie Preprocessor took 41.96ms. Allocated memory is still 388.0MB. Free memory was 350.1MB in the beginning and 348.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 00:58:49,363 INFO L158 Benchmark]: RCFGBuilder took 515.20ms. Allocated memory is still 388.0MB. Free memory was 348.3MB in the beginning and 330.9MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-24 00:58:49,363 INFO L158 Benchmark]: TraceAbstraction took 849172.17ms. Allocated memory was 388.0MB in the beginning and 13.2GB in the end (delta: 12.8GB). Free memory was 330.2MB in the beginning and 8.3GB in the end (delta: -8.0GB). Peak memory consumption was 4.8GB. Max. memory is 16.0GB. [2023-08-24 00:58:49,380 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 388.0MB. Free memory is still 364.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 283.27ms. Allocated memory is still 388.0MB. Free memory was 363.7MB in the beginning and 352.1MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.77ms. Allocated memory is still 388.0MB. Free memory was 352.1MB in the beginning and 350.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 41.96ms. Allocated memory is still 388.0MB. Free memory was 350.1MB in the beginning and 348.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 515.20ms. Allocated memory is still 388.0MB. Free memory was 348.3MB in the beginning and 330.9MB in the end (delta: 17.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 849172.17ms. Allocated memory was 388.0MB in the beginning and 13.2GB in the end (delta: 12.8GB). Free memory was 330.2MB in the beginning and 8.3GB in the end (delta: -8.0GB). Peak memory consumption was 4.8GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.1s, 152 PlacesBefore, 50 PlacesAfterwards, 147 TransitionsBefore, 37 TransitionsAfterwards, 2916 CoEnabledTransitionPairs, 7 FixpointIterations, 60 TrivialSequentialCompositions, 39 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 12 ConcurrentYvCompositions, 8 ChoiceCompositions, 126 TotalNumberOfCompositions, 3523 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3523, independent: 3523, independent conditional: 0, independent unconditional: 3523, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1562, independent: 1562, independent conditional: 0, independent unconditional: 1562, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3523, independent: 1961, independent conditional: 0, independent unconditional: 1961, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 1562, unknown conditional: 0, unknown unconditional: 1562] , Statistics on independence cache: Total cache size (in pairs): 147, Positive cache size: 147, Positive conditional cache size: 0, Positive unconditional cache size: 147, 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: 114]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 1ms.. - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 1ms.. - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 1ms.. - TimeoutResultAtElement [Line: 101]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 1ms.. - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 1ms.. - TimeoutResultAtElement [Line: 102]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 1ms.. - TimeoutResultAtElement [Line: 104]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 35 with TraceHistMax 2,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 1ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 13 procedures, 192 locations, 7 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: 849.0s, OverallIterations: 17, TraceHistogramMax: 2, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 473.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.3s, HoareTripleCheckerStatistics: 67 mSolverCounterUnknown, 1772 SdHoareTripleChecker+Valid, 235.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1772 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 233.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 180 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6185 IncrementalHoareTripleChecker+Invalid, 6432 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 180 mSolverCounterUnsat, 0 mSDtfsCounter, 6185 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 546 GetRequests, 406 SyntacticMatches, 16 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 312.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10679occurred in iteration=16, InterpolantAutomatonStates: 127, 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: 0.2s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 197.7s InterpolantComputationTime, 741 NumberOfCodeBlocks, 741 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 938 ConstructedInterpolants, 0 QuantifiedInterpolants, 25223 SizeOfPredicates, 40 NumberOfNonLiveVariables, 2235 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 30 InterpolantComputations, 9 PerfectInterpolantSequences, 8/38 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