/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/mult-comm.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:59:05,979 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:59:06,069 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-SemanticLbe.epf [2023-11-17 15:59:06,102 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:59:06,103 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:59:06,104 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:59:06,104 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:59:06,105 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:59:06,105 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:59:06,109 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:59:06,110 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:59:06,110 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:59:06,110 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:59:06,111 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:59:06,111 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:59:06,112 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:59:06,112 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:59:06,112 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:59:06,112 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:59:06,112 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:59:06,113 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:59:06,113 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:59:06,114 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:59:06,114 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:59:06,114 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:59:06,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:59:06,114 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:59:06,115 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:59:06,115 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:59:06,115 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:59:06,116 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:59:06,116 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:59:06,116 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:59:06,386 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:59:06,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:59:06,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:59:06,414 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:59:06,414 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:59:06,415 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-comm.wvr.c [2023-11-17 15:59:07,655 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:59:07,857 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:59:07,858 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-comm.wvr.c [2023-11-17 15:59:07,865 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/157ebc199/8981fcfca3cb4b8dbe13821891351522/FLAG9548fdadf [2023-11-17 15:59:07,884 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/157ebc199/8981fcfca3cb4b8dbe13821891351522 [2023-11-17 15:59:07,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:59:07,887 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:59:07,891 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:59:07,891 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:59:07,895 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:59:07,896 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:59:07" (1/1) ... [2023-11-17 15:59:07,897 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7208bbfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:07, skipping insertion in model container [2023-11-17 15:59:07,897 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:59:07" (1/1) ... [2023-11-17 15:59:07,921 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:59:08,060 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/mult-comm.wvr.c[1936,1949] [2023-11-17 15:59:08,064 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:59:08,072 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:59:08,088 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/mult-comm.wvr.c[1936,1949] [2023-11-17 15:59:08,089 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:59:08,101 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:59:08,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:08 WrapperNode [2023-11-17 15:59:08,102 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:59:08,103 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:59:08,103 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:59:08,103 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:59:08,109 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:08" (1/1) ... [2023-11-17 15:59:08,115 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:08" (1/1) ... [2023-11-17 15:59:08,132 INFO L138 Inliner]: procedures = 21, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2023-11-17 15:59:08,133 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:59:08,133 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:59:08,133 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:59:08,134 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:59:08,141 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:08" (1/1) ... [2023-11-17 15:59:08,142 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:08" (1/1) ... [2023-11-17 15:59:08,150 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:08" (1/1) ... [2023-11-17 15:59:08,150 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:08" (1/1) ... [2023-11-17 15:59:08,154 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:08" (1/1) ... [2023-11-17 15:59:08,157 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:08" (1/1) ... [2023-11-17 15:59:08,158 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:08" (1/1) ... [2023-11-17 15:59:08,159 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:08" (1/1) ... [2023-11-17 15:59:08,161 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:59:08,162 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:59:08,162 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:59:08,162 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:59:08,163 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:08" (1/1) ... [2023-11-17 15:59:08,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:59:08,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:08,191 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) [2023-11-17 15:59:08,194 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 [2023-11-17 15:59:08,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:59:08,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 15:59:08,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 15:59:08,213 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 15:59:08,213 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 15:59:08,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:59:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:59:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:59:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:59:08,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:59:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 15:59:08,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:59:08,215 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:59:08,289 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:59:08,291 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:59:08,452 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:59:08,469 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:59:08,469 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 15:59:08,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:59:08 BoogieIcfgContainer [2023-11-17 15:59:08,471 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:59:08,473 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:59:08,474 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:59:08,478 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:59:08,478 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:59:07" (1/3) ... [2023-11-17 15:59:08,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330f88ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:59:08, skipping insertion in model container [2023-11-17 15:59:08,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:59:08" (2/3) ... [2023-11-17 15:59:08,479 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@330f88ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:59:08, skipping insertion in model container [2023-11-17 15:59:08,479 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:59:08" (3/3) ... [2023-11-17 15:59:08,481 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-comm.wvr.c [2023-11-17 15:59:08,495 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:59:08,495 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 15:59:08,496 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:59:08,552 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 15:59:08,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 82 transitions, 178 flow [2023-11-17 15:59:08,624 INFO L124 PetriNetUnfolderBase]: 5/80 cut-off events. [2023-11-17 15:59:08,624 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:59:08,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89 conditions, 80 events. 5/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/74 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2023-11-17 15:59:08,629 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 82 transitions, 178 flow [2023-11-17 15:59:08,633 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 71 transitions, 154 flow [2023-11-17 15:59:08,635 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:59:08,646 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 71 transitions, 154 flow [2023-11-17 15:59:08,649 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 71 transitions, 154 flow [2023-11-17 15:59:08,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 71 transitions, 154 flow [2023-11-17 15:59:08,669 INFO L124 PetriNetUnfolderBase]: 5/71 cut-off events. [2023-11-17 15:59:08,670 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:59:08,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80 conditions, 71 events. 5/71 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 54 event pairs, 0 based on Foata normal form. 0/66 useless extension candidates. Maximal degree in co-relation 43. Up to 2 conditions per place. [2023-11-17 15:59:08,671 INFO L119 LiptonReduction]: Number of co-enabled transitions 648 [2023-11-17 15:59:10,362 INFO L134 LiptonReduction]: Checked pairs total: 584 [2023-11-17 15:59:10,363 INFO L136 LiptonReduction]: Total number of compositions: 63 [2023-11-17 15:59:10,377 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:59:10,391 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=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@2c69ce55, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:59:10,391 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 15:59:10,396 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:59:10,396 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2023-11-17 15:59:10,396 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 15:59:10,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:10,397 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:10,397 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:10,402 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:10,402 INFO L85 PathProgramCache]: Analyzing trace with hash 977748267, now seen corresponding path program 1 times [2023-11-17 15:59:10,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:10,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800538546] [2023-11-17 15:59:10,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:10,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:10,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:10,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:10,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800538546] [2023-11-17 15:59:10,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800538546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:59:10,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:59:10,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 15:59:10,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468041741] [2023-11-17 15:59:10,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:10,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:59:10,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:10,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:59:10,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:59:10,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 145 [2023-11-17 15:59:10,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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) [2023-11-17 15:59:10,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:10,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 145 [2023-11-17 15:59:10,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:11,048 INFO L124 PetriNetUnfolderBase]: 74/134 cut-off events. [2023-11-17 15:59:11,049 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-17 15:59:11,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 134 events. 74/134 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 354 event pairs, 24 based on Foata normal form. 1/103 useless extension candidates. Maximal degree in co-relation 220. Up to 79 conditions per place. [2023-11-17 15:59:11,053 INFO L140 encePairwiseOnDemand]: 141/145 looper letters, 23 selfloop transitions, 3 changer transitions 1/27 dead transitions. [2023-11-17 15:59:11,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 27 transitions, 129 flow [2023-11-17 15:59:11,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:59:11,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:59:11,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-11-17 15:59:11,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5402298850574713 [2023-11-17 15:59:11,070 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-11-17 15:59:11,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-11-17 15:59:11,072 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:11,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-11-17 15:59:11,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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) [2023-11-17 15:59:11,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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) [2023-11-17 15:59:11,084 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 145.0) internal successors, (580), 4 states have internal predecessors, (580), 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) [2023-11-17 15:59:11,085 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 3 states and 235 transitions. [2023-11-17 15:59:11,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 27 transitions, 129 flow [2023-11-17 15:59:11,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 27 transitions, 115 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 15:59:11,091 INFO L231 Difference]: Finished difference. Result has 19 places, 17 transitions, 53 flow [2023-11-17 15:59:11,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=53, PETRI_PLACES=19, PETRI_TRANSITIONS=17} [2023-11-17 15:59:11,096 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2023-11-17 15:59:11,097 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 17 transitions, 53 flow [2023-11-17 15:59:11,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.33333333333333) internal successors, (220), 3 states have internal predecessors, (220), 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) [2023-11-17 15:59:11,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:11,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:11,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:59:11,099 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:11,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:11,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1653099630, now seen corresponding path program 1 times [2023-11-17 15:59:11,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:11,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191385433] [2023-11-17 15:59:11,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:11,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:11,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:11,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:11,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191385433] [2023-11-17 15:59:11,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191385433] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:11,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188223210] [2023-11-17 15:59:11,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:11,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:11,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:11,405 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) [2023-11-17 15:59:11,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 15:59:11,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:11,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-17 15:59:11,501 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:11,690 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:11,690 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:11,909 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:11,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188223210] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:11,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:11,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4] total 9 [2023-11-17 15:59:11,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903975951] [2023-11-17 15:59:11,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:11,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-17 15:59:11,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:11,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-17 15:59:11,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:59:11,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 145 [2023-11-17 15:59:11,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 17 transitions, 53 flow. Second operand has 11 states, 11 states have (on average 58.0) internal successors, (638), 11 states have internal predecessors, (638), 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) [2023-11-17 15:59:11,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:11,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 145 [2023-11-17 15:59:11,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:12,209 INFO L124 PetriNetUnfolderBase]: 87/160 cut-off events. [2023-11-17 15:59:12,210 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-11-17 15:59:12,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 160 events. 87/160 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 505 event pairs, 2 based on Foata normal form. 1/161 useless extension candidates. Maximal degree in co-relation 128. Up to 75 conditions per place. [2023-11-17 15:59:12,211 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 24 selfloop transitions, 5 changer transitions 21/50 dead transitions. [2023-11-17 15:59:12,211 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 50 transitions, 238 flow [2023-11-17 15:59:12,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:59:12,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:59:12,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 436 transitions. [2023-11-17 15:59:12,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4295566502463054 [2023-11-17 15:59:12,217 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 436 transitions. [2023-11-17 15:59:12,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 436 transitions. [2023-11-17 15:59:12,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:12,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 436 transitions. [2023-11-17 15:59:12,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 62.285714285714285) internal successors, (436), 7 states have internal predecessors, (436), 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) [2023-11-17 15:59:12,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 145.0) internal successors, (1160), 8 states have internal predecessors, (1160), 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) [2023-11-17 15:59:12,225 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 145.0) internal successors, (1160), 8 states have internal predecessors, (1160), 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) [2023-11-17 15:59:12,225 INFO L175 Difference]: Start difference. First operand has 19 places, 17 transitions, 53 flow. Second operand 7 states and 436 transitions. [2023-11-17 15:59:12,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 50 transitions, 238 flow [2023-11-17 15:59:12,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 50 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:59:12,228 INFO L231 Difference]: Finished difference. Result has 29 places, 19 transitions, 82 flow [2023-11-17 15:59:12,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=82, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2023-11-17 15:59:12,232 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 9 predicate places. [2023-11-17 15:59:12,235 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 82 flow [2023-11-17 15:59:12,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 58.0) internal successors, (638), 11 states have internal predecessors, (638), 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) [2023-11-17 15:59:12,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:12,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:12,246 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:12,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:12,438 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:12,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:12,438 INFO L85 PathProgramCache]: Analyzing trace with hash 616861472, now seen corresponding path program 1 times [2023-11-17 15:59:12,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:12,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813998111] [2023-11-17 15:59:12,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:12,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:12,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:12,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:12,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:12,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813998111] [2023-11-17 15:59:12,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813998111] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:12,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [331787] [2023-11-17 15:59:12,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:12,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:12,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:12,637 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) [2023-11-17 15:59:12,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 15:59:12,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:12,712 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 15:59:12,716 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:12,807 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:12,808 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:12,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:12,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [331787] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:12,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:12,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 7 [2023-11-17 15:59:12,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272618339] [2023-11-17 15:59:12,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:12,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 15:59:12,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:12,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 15:59:12,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-17 15:59:12,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 145 [2023-11-17 15:59:12,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 19 transitions, 82 flow. Second operand has 9 states, 9 states have (on average 64.11111111111111) internal successors, (577), 9 states have internal predecessors, (577), 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) [2023-11-17 15:59:12,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:12,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 145 [2023-11-17 15:59:12,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:13,050 INFO L124 PetriNetUnfolderBase]: 59/111 cut-off events. [2023-11-17 15:59:13,050 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2023-11-17 15:59:13,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 346 conditions, 111 events. 59/111 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 250 event pairs, 11 based on Foata normal form. 1/112 useless extension candidates. Maximal degree in co-relation 333. Up to 73 conditions per place. [2023-11-17 15:59:13,052 INFO L140 encePairwiseOnDemand]: 139/145 looper letters, 20 selfloop transitions, 6 changer transitions 10/36 dead transitions. [2023-11-17 15:59:13,052 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 36 transitions, 217 flow [2023-11-17 15:59:13,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 15:59:13,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 15:59:13,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 402 transitions. [2023-11-17 15:59:13,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46206896551724136 [2023-11-17 15:59:13,054 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 402 transitions. [2023-11-17 15:59:13,054 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 402 transitions. [2023-11-17 15:59:13,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:13,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 402 transitions. [2023-11-17 15:59:13,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 67.0) internal successors, (402), 6 states have internal predecessors, (402), 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) [2023-11-17 15:59:13,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 145.0) internal successors, (1015), 7 states have internal predecessors, (1015), 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) [2023-11-17 15:59:13,057 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 145.0) internal successors, (1015), 7 states have internal predecessors, (1015), 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) [2023-11-17 15:59:13,057 INFO L175 Difference]: Start difference. First operand has 29 places, 19 transitions, 82 flow. Second operand 6 states and 402 transitions. [2023-11-17 15:59:13,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 36 transitions, 217 flow [2023-11-17 15:59:13,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 36 transitions, 187 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-11-17 15:59:13,060 INFO L231 Difference]: Finished difference. Result has 29 places, 21 transitions, 94 flow [2023-11-17 15:59:13,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=94, PETRI_PLACES=29, PETRI_TRANSITIONS=21} [2023-11-17 15:59:13,060 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 9 predicate places. [2023-11-17 15:59:13,061 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 21 transitions, 94 flow [2023-11-17 15:59:13,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 64.11111111111111) internal successors, (577), 9 states have internal predecessors, (577), 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) [2023-11-17 15:59:13,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:13,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:13,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:13,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-17 15:59:13,268 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:13,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:13,268 INFO L85 PathProgramCache]: Analyzing trace with hash 448537604, now seen corresponding path program 2 times [2023-11-17 15:59:13,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:13,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919463878] [2023-11-17 15:59:13,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:13,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:13,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:13,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:13,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919463878] [2023-11-17 15:59:13,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919463878] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:13,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391704811] [2023-11-17 15:59:13,451 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:59:13,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:13,451 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:13,453 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) [2023-11-17 15:59:13,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 15:59:13,524 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:59:13,524 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:13,526 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-17 15:59:13,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:13,618 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:13,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:13,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:13,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391704811] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:13,734 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:13,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 5] total 13 [2023-11-17 15:59:13,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470181100] [2023-11-17 15:59:13,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:13,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 15:59:13,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:13,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 15:59:13,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2023-11-17 15:59:13,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 15:59:13,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 21 transitions, 94 flow. Second operand has 15 states, 15 states have (on average 55.333333333333336) internal successors, (830), 15 states have internal predecessors, (830), 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) [2023-11-17 15:59:13,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:13,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 15:59:13,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:14,003 INFO L124 PetriNetUnfolderBase]: 113/211 cut-off events. [2023-11-17 15:59:14,003 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2023-11-17 15:59:14,004 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 211 events. 113/211 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 683 event pairs, 5 based on Foata normal form. 3/214 useless extension candidates. Maximal degree in co-relation 601. Up to 92 conditions per place. [2023-11-17 15:59:14,006 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 44 selfloop transitions, 24 changer transitions 14/82 dead transitions. [2023-11-17 15:59:14,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 82 transitions, 448 flow [2023-11-17 15:59:14,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 15:59:14,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 15:59:14,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 826 transitions. [2023-11-17 15:59:14,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4068965517241379 [2023-11-17 15:59:14,009 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 826 transitions. [2023-11-17 15:59:14,009 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 826 transitions. [2023-11-17 15:59:14,010 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:14,010 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 826 transitions. [2023-11-17 15:59:14,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 59.0) internal successors, (826), 14 states have internal predecessors, (826), 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) [2023-11-17 15:59:14,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 145.0) internal successors, (2175), 15 states have internal predecessors, (2175), 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) [2023-11-17 15:59:14,015 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 145.0) internal successors, (2175), 15 states have internal predecessors, (2175), 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) [2023-11-17 15:59:14,015 INFO L175 Difference]: Start difference. First operand has 29 places, 21 transitions, 94 flow. Second operand 14 states and 826 transitions. [2023-11-17 15:59:14,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 82 transitions, 448 flow [2023-11-17 15:59:14,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 82 transitions, 435 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-17 15:59:14,018 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 246 flow [2023-11-17 15:59:14,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=246, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2023-11-17 15:59:14,019 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 26 predicate places. [2023-11-17 15:59:14,019 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 246 flow [2023-11-17 15:59:14,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 55.333333333333336) internal successors, (830), 15 states have internal predecessors, (830), 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) [2023-11-17 15:59:14,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:14,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:14,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:14,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:14,221 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:14,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:14,222 INFO L85 PathProgramCache]: Analyzing trace with hash -936170646, now seen corresponding path program 3 times [2023-11-17 15:59:14,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:14,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923227777] [2023-11-17 15:59:14,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:14,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:14,430 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:14,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:14,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923227777] [2023-11-17 15:59:14,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923227777] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:14,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568879688] [2023-11-17 15:59:14,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:59:14,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:14,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:14,432 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) [2023-11-17 15:59:14,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 15:59:14,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 15:59:14,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:14,491 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-17 15:59:14,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:14,586 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:14,587 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:14,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:14,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568879688] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:14,764 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:14,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 5] total 12 [2023-11-17 15:59:14,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195260143] [2023-11-17 15:59:14,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:14,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 15:59:14,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:14,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 15:59:14,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2023-11-17 15:59:14,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 15:59:14,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 246 flow. Second operand has 14 states, 14 states have (on average 55.285714285714285) internal successors, (774), 14 states have internal predecessors, (774), 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) [2023-11-17 15:59:14,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:14,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 15:59:14,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:15,004 INFO L124 PetriNetUnfolderBase]: 150/273 cut-off events. [2023-11-17 15:59:15,004 INFO L125 PetriNetUnfolderBase]: For 600/600 co-relation queries the response was YES. [2023-11-17 15:59:15,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1124 conditions, 273 events. 150/273 cut-off events. For 600/600 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 933 event pairs, 17 based on Foata normal form. 2/275 useless extension candidates. Maximal degree in co-relation 1098. Up to 180 conditions per place. [2023-11-17 15:59:15,007 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 55 selfloop transitions, 26 changer transitions 7/88 dead transitions. [2023-11-17 15:59:15,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 88 transitions, 675 flow [2023-11-17 15:59:15,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 15:59:15,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 15:59:15,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 709 transitions. [2023-11-17 15:59:15,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4074712643678161 [2023-11-17 15:59:15,010 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 709 transitions. [2023-11-17 15:59:15,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 709 transitions. [2023-11-17 15:59:15,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:15,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 709 transitions. [2023-11-17 15:59:15,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 59.083333333333336) internal successors, (709), 12 states have internal predecessors, (709), 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) [2023-11-17 15:59:15,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 145.0) internal successors, (1885), 13 states have internal predecessors, (1885), 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) [2023-11-17 15:59:15,015 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 145.0) internal successors, (1885), 13 states have internal predecessors, (1885), 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) [2023-11-17 15:59:15,015 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 246 flow. Second operand 12 states and 709 transitions. [2023-11-17 15:59:15,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 88 transitions, 675 flow [2023-11-17 15:59:15,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 88 transitions, 561 flow, removed 46 selfloop flow, removed 6 redundant places. [2023-11-17 15:59:15,021 INFO L231 Difference]: Finished difference. Result has 56 places, 57 transitions, 380 flow [2023-11-17 15:59:15,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=380, PETRI_PLACES=56, PETRI_TRANSITIONS=57} [2023-11-17 15:59:15,022 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 36 predicate places. [2023-11-17 15:59:15,022 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 57 transitions, 380 flow [2023-11-17 15:59:15,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 55.285714285714285) internal successors, (774), 14 states have internal predecessors, (774), 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) [2023-11-17 15:59:15,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:15,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:15,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:15,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:15,229 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:15,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:15,229 INFO L85 PathProgramCache]: Analyzing trace with hash -36292262, now seen corresponding path program 2 times [2023-11-17 15:59:15,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:15,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752269248] [2023-11-17 15:59:15,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:15,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:15,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:15,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:15,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:15,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752269248] [2023-11-17 15:59:15,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752269248] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:15,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872378979] [2023-11-17 15:59:15,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:59:15,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:15,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:15,393 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) [2023-11-17 15:59:15,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 15:59:15,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:59:15,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:15,455 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 15:59:15,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:15,521 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:15,521 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:15,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:15,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872378979] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:15,638 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:15,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 3] total 8 [2023-11-17 15:59:15,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390917611] [2023-11-17 15:59:15,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:15,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-17 15:59:15,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:15,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-17 15:59:15,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2023-11-17 15:59:15,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 145 [2023-11-17 15:59:15,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 380 flow. Second operand has 10 states, 10 states have (on average 64.0) internal successors, (640), 10 states have internal predecessors, (640), 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) [2023-11-17 15:59:15,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:15,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 145 [2023-11-17 15:59:15,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:15,781 INFO L124 PetriNetUnfolderBase]: 178/334 cut-off events. [2023-11-17 15:59:15,781 INFO L125 PetriNetUnfolderBase]: For 1017/1017 co-relation queries the response was YES. [2023-11-17 15:59:15,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1397 conditions, 334 events. 178/334 cut-off events. For 1017/1017 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1276 event pairs, 23 based on Foata normal form. 2/336 useless extension candidates. Maximal degree in co-relation 1328. Up to 253 conditions per place. [2023-11-17 15:59:15,786 INFO L140 encePairwiseOnDemand]: 139/145 looper letters, 62 selfloop transitions, 21 changer transitions 5/88 dead transitions. [2023-11-17 15:59:15,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 88 transitions, 731 flow [2023-11-17 15:59:15,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 15:59:15,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 15:59:15,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 539 transitions. [2023-11-17 15:59:15,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4646551724137931 [2023-11-17 15:59:15,788 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 539 transitions. [2023-11-17 15:59:15,788 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 539 transitions. [2023-11-17 15:59:15,789 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:15,789 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 539 transitions. [2023-11-17 15:59:15,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 67.375) internal successors, (539), 8 states have internal predecessors, (539), 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) [2023-11-17 15:59:15,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 145.0) internal successors, (1305), 9 states have internal predecessors, (1305), 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) [2023-11-17 15:59:15,792 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 145.0) internal successors, (1305), 9 states have internal predecessors, (1305), 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) [2023-11-17 15:59:15,792 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 380 flow. Second operand 8 states and 539 transitions. [2023-11-17 15:59:15,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 88 transitions, 731 flow [2023-11-17 15:59:15,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 88 transitions, 637 flow, removed 38 selfloop flow, removed 3 redundant places. [2023-11-17 15:59:15,800 INFO L231 Difference]: Finished difference. Result has 63 places, 66 transitions, 440 flow [2023-11-17 15:59:15,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=307, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=440, PETRI_PLACES=63, PETRI_TRANSITIONS=66} [2023-11-17 15:59:15,802 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 43 predicate places. [2023-11-17 15:59:15,802 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 66 transitions, 440 flow [2023-11-17 15:59:15,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 64.0) internal successors, (640), 10 states have internal predecessors, (640), 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) [2023-11-17 15:59:15,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:15,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:15,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:16,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:16,010 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:16,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:16,010 INFO L85 PathProgramCache]: Analyzing trace with hash -712837712, now seen corresponding path program 3 times [2023-11-17 15:59:16,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:16,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101854348] [2023-11-17 15:59:16,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:16,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:16,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:16,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:16,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101854348] [2023-11-17 15:59:16,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101854348] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:16,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1344848092] [2023-11-17 15:59:16,171 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:59:16,171 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:16,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:16,172 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) [2023-11-17 15:59:16,195 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 15:59:16,240 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 15:59:16,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:16,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 15:59:16,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:16,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:16,307 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:16,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:59:16,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1344848092] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:16,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 15:59:16,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 9 [2023-11-17 15:59:16,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547631706] [2023-11-17 15:59:16,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:59:16,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:59:16,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:16,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:59:16,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2023-11-17 15:59:16,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 145 [2023-11-17 15:59:16,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 66 transitions, 440 flow. Second operand has 5 states, 5 states have (on average 63.8) internal successors, (319), 5 states have internal predecessors, (319), 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) [2023-11-17 15:59:16,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:16,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 145 [2023-11-17 15:59:16,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:16,461 INFO L124 PetriNetUnfolderBase]: 193/357 cut-off events. [2023-11-17 15:59:16,461 INFO L125 PetriNetUnfolderBase]: For 1080/1080 co-relation queries the response was YES. [2023-11-17 15:59:16,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 357 events. 193/357 cut-off events. For 1080/1080 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1369 event pairs, 36 based on Foata normal form. 1/354 useless extension candidates. Maximal degree in co-relation 1424. Up to 313 conditions per place. [2023-11-17 15:59:16,464 INFO L140 encePairwiseOnDemand]: 139/145 looper letters, 65 selfloop transitions, 12 changer transitions 2/79 dead transitions. [2023-11-17 15:59:16,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 673 flow [2023-11-17 15:59:16,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:59:16,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:59:16,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 337 transitions. [2023-11-17 15:59:16,466 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46482758620689657 [2023-11-17 15:59:16,466 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 337 transitions. [2023-11-17 15:59:16,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 337 transitions. [2023-11-17 15:59:16,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:16,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 337 transitions. [2023-11-17 15:59:16,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 67.4) internal successors, (337), 5 states have internal predecessors, (337), 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) [2023-11-17 15:59:16,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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) [2023-11-17 15:59:16,469 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 145.0) internal successors, (870), 6 states have internal predecessors, (870), 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) [2023-11-17 15:59:16,469 INFO L175 Difference]: Start difference. First operand has 63 places, 66 transitions, 440 flow. Second operand 5 states and 337 transitions. [2023-11-17 15:59:16,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 673 flow [2023-11-17 15:59:16,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 79 transitions, 615 flow, removed 19 selfloop flow, removed 4 redundant places. [2023-11-17 15:59:16,476 INFO L231 Difference]: Finished difference. Result has 65 places, 70 transitions, 465 flow [2023-11-17 15:59:16,476 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=465, PETRI_PLACES=65, PETRI_TRANSITIONS=70} [2023-11-17 15:59:16,477 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 45 predicate places. [2023-11-17 15:59:16,477 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 70 transitions, 465 flow [2023-11-17 15:59:16,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.8) internal successors, (319), 5 states have internal predecessors, (319), 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) [2023-11-17 15:59:16,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:16,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:16,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:16,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:16,684 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:16,684 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:16,685 INFO L85 PathProgramCache]: Analyzing trace with hash 161039753, now seen corresponding path program 1 times [2023-11-17 15:59:16,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:16,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117735786] [2023-11-17 15:59:16,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:16,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:16,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:17,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:17,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:17,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117735786] [2023-11-17 15:59:17,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117735786] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:17,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1501498645] [2023-11-17 15:59:17,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:17,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:17,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:17,113 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) [2023-11-17 15:59:17,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 15:59:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:17,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-17 15:59:17,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:17,345 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:17,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:17,895 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:17,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1501498645] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:17,895 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:17,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2023-11-17 15:59:17,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646156183] [2023-11-17 15:59:17,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:17,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 15:59:17,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:17,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 15:59:17,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-17 15:59:17,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 15:59:17,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 70 transitions, 465 flow. Second operand has 18 states, 18 states have (on average 55.0) internal successors, (990), 18 states have internal predecessors, (990), 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) [2023-11-17 15:59:17,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:17,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 15:59:17,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:19,286 INFO L124 PetriNetUnfolderBase]: 304/579 cut-off events. [2023-11-17 15:59:19,286 INFO L125 PetriNetUnfolderBase]: For 1656/1656 co-relation queries the response was YES. [2023-11-17 15:59:19,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2387 conditions, 579 events. 304/579 cut-off events. For 1656/1656 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2734 event pairs, 27 based on Foata normal form. 3/578 useless extension candidates. Maximal degree in co-relation 2250. Up to 264 conditions per place. [2023-11-17 15:59:19,290 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 94 selfloop transitions, 62 changer transitions 26/182 dead transitions. [2023-11-17 15:59:19,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 182 transitions, 1342 flow [2023-11-17 15:59:19,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-17 15:59:19,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-17 15:59:19,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1354 transitions. [2023-11-17 15:59:19,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4059970014992504 [2023-11-17 15:59:19,295 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1354 transitions. [2023-11-17 15:59:19,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1354 transitions. [2023-11-17 15:59:19,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:19,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1354 transitions. [2023-11-17 15:59:19,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 58.869565217391305) internal successors, (1354), 23 states have internal predecessors, (1354), 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) [2023-11-17 15:59:19,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 145.0) internal successors, (3480), 24 states have internal predecessors, (3480), 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) [2023-11-17 15:59:19,305 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 145.0) internal successors, (3480), 24 states have internal predecessors, (3480), 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) [2023-11-17 15:59:19,305 INFO L175 Difference]: Start difference. First operand has 65 places, 70 transitions, 465 flow. Second operand 23 states and 1354 transitions. [2023-11-17 15:59:19,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 182 transitions, 1342 flow [2023-11-17 15:59:19,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 182 transitions, 1317 flow, removed 10 selfloop flow, removed 2 redundant places. [2023-11-17 15:59:19,316 INFO L231 Difference]: Finished difference. Result has 97 places, 96 transitions, 833 flow [2023-11-17 15:59:19,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=833, PETRI_PLACES=97, PETRI_TRANSITIONS=96} [2023-11-17 15:59:19,318 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 77 predicate places. [2023-11-17 15:59:19,318 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 96 transitions, 833 flow [2023-11-17 15:59:19,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 55.0) internal successors, (990), 18 states have internal predecessors, (990), 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) [2023-11-17 15:59:19,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:19,319 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:19,328 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:19,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:19,526 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:19,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:19,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1859845675, now seen corresponding path program 2 times [2023-11-17 15:59:19,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:19,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465839333] [2023-11-17 15:59:19,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:19,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:20,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:20,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:20,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465839333] [2023-11-17 15:59:20,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465839333] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:20,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606471130] [2023-11-17 15:59:20,026 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:59:20,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:20,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:20,027 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) [2023-11-17 15:59:20,047 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 15:59:20,090 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:59:20,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:20,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-17 15:59:20,092 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:20,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:20,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:20,701 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:20,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606471130] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:20,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:20,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 17 [2023-11-17 15:59:20,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796553191] [2023-11-17 15:59:20,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:20,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-17 15:59:20,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:20,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-17 15:59:20,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-11-17 15:59:20,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 15:59:20,705 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 96 transitions, 833 flow. Second operand has 19 states, 19 states have (on average 54.8421052631579) internal successors, (1042), 19 states have internal predecessors, (1042), 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) [2023-11-17 15:59:20,705 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:20,705 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 15:59:20,705 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:22,788 INFO L124 PetriNetUnfolderBase]: 354/706 cut-off events. [2023-11-17 15:59:22,789 INFO L125 PetriNetUnfolderBase]: For 4977/4977 co-relation queries the response was YES. [2023-11-17 15:59:22,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3783 conditions, 706 events. 354/706 cut-off events. For 4977/4977 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3692 event pairs, 19 based on Foata normal form. 3/709 useless extension candidates. Maximal degree in co-relation 3639. Up to 273 conditions per place. [2023-11-17 15:59:22,795 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 105 selfloop transitions, 93 changer transitions 28/226 dead transitions. [2023-11-17 15:59:22,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 226 transitions, 2241 flow [2023-11-17 15:59:22,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-17 15:59:22,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-17 15:59:22,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1814 transitions. [2023-11-17 15:59:22,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403559510567297 [2023-11-17 15:59:22,800 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1814 transitions. [2023-11-17 15:59:22,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1814 transitions. [2023-11-17 15:59:22,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:22,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1814 transitions. [2023-11-17 15:59:22,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 58.516129032258064) internal successors, (1814), 31 states have internal predecessors, (1814), 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) [2023-11-17 15:59:22,812 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 145.0) internal successors, (4640), 32 states have internal predecessors, (4640), 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) [2023-11-17 15:59:22,813 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 145.0) internal successors, (4640), 32 states have internal predecessors, (4640), 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) [2023-11-17 15:59:22,813 INFO L175 Difference]: Start difference. First operand has 97 places, 96 transitions, 833 flow. Second operand 31 states and 1814 transitions. [2023-11-17 15:59:22,813 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 226 transitions, 2241 flow [2023-11-17 15:59:22,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 226 transitions, 2062 flow, removed 69 selfloop flow, removed 11 redundant places. [2023-11-17 15:59:22,832 INFO L231 Difference]: Finished difference. Result has 129 places, 127 transitions, 1459 flow [2023-11-17 15:59:22,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=706, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1459, PETRI_PLACES=129, PETRI_TRANSITIONS=127} [2023-11-17 15:59:22,833 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 109 predicate places. [2023-11-17 15:59:22,833 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 127 transitions, 1459 flow [2023-11-17 15:59:22,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 54.8421052631579) internal successors, (1042), 19 states have internal predecessors, (1042), 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) [2023-11-17 15:59:22,834 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:22,834 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:22,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:23,039 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,SelfDestructingSolverStorable8 [2023-11-17 15:59:23,040 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:23,040 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:23,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1887551305, now seen corresponding path program 3 times [2023-11-17 15:59:23,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:23,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063965502] [2023-11-17 15:59:23,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:23,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:23,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:23,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:23,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:23,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063965502] [2023-11-17 15:59:23,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063965502] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:23,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098851188] [2023-11-17 15:59:23,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:59:23,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:23,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:23,563 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:23,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-17 15:59:23,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 15:59:23,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:23,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-17 15:59:23,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:23,791 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:23,791 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:24,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:24,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098851188] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:24,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:24,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 17 [2023-11-17 15:59:24,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951067657] [2023-11-17 15:59:24,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:24,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-17 15:59:24,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:24,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-17 15:59:24,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-11-17 15:59:24,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 15:59:24,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 127 transitions, 1459 flow. Second operand has 19 states, 19 states have (on average 54.8421052631579) internal successors, (1042), 19 states have internal predecessors, (1042), 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) [2023-11-17 15:59:24,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:24,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 15:59:24,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:25,706 INFO L124 PetriNetUnfolderBase]: 339/657 cut-off events. [2023-11-17 15:59:25,706 INFO L125 PetriNetUnfolderBase]: For 8381/8381 co-relation queries the response was YES. [2023-11-17 15:59:25,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4103 conditions, 657 events. 339/657 cut-off events. For 8381/8381 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3292 event pairs, 19 based on Foata normal form. 3/658 useless extension candidates. Maximal degree in co-relation 3959. Up to 277 conditions per place. [2023-11-17 15:59:25,714 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 91 selfloop transitions, 93 changer transitions 17/201 dead transitions. [2023-11-17 15:59:25,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 201 transitions, 2261 flow [2023-11-17 15:59:25,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-17 15:59:25,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-11-17 15:59:25,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1464 transitions. [2023-11-17 15:59:25,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40386206896551724 [2023-11-17 15:59:25,718 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 1464 transitions. [2023-11-17 15:59:25,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 1464 transitions. [2023-11-17 15:59:25,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:25,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 1464 transitions. [2023-11-17 15:59:25,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 58.56) internal successors, (1464), 25 states have internal predecessors, (1464), 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) [2023-11-17 15:59:25,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 145.0) internal successors, (3770), 26 states have internal predecessors, (3770), 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) [2023-11-17 15:59:25,727 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 145.0) internal successors, (3770), 26 states have internal predecessors, (3770), 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) [2023-11-17 15:59:25,727 INFO L175 Difference]: Start difference. First operand has 129 places, 127 transitions, 1459 flow. Second operand 25 states and 1464 transitions. [2023-11-17 15:59:25,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 201 transitions, 2261 flow [2023-11-17 15:59:25,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 201 transitions, 1775 flow, removed 200 selfloop flow, removed 18 redundant places. [2023-11-17 15:59:25,765 INFO L231 Difference]: Finished difference. Result has 136 places, 131 transitions, 1364 flow [2023-11-17 15:59:25,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=1008, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1364, PETRI_PLACES=136, PETRI_TRANSITIONS=131} [2023-11-17 15:59:25,766 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 116 predicate places. [2023-11-17 15:59:25,766 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 131 transitions, 1364 flow [2023-11-17 15:59:25,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 54.8421052631579) internal successors, (1042), 19 states have internal predecessors, (1042), 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) [2023-11-17 15:59:25,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:25,767 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:25,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:25,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-17 15:59:25,973 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:25,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:25,973 INFO L85 PathProgramCache]: Analyzing trace with hash 607274760, now seen corresponding path program 4 times [2023-11-17 15:59:25,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:25,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851946037] [2023-11-17 15:59:25,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:25,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:25,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:26,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:26,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:26,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851946037] [2023-11-17 15:59:26,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851946037] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:26,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978006262] [2023-11-17 15:59:26,537 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:59:26,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:26,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:26,538 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:26,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-17 15:59:26,631 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:59:26,631 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:26,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 15:59:26,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:26,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:26,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:27,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:27,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978006262] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:27,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:27,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2023-11-17 15:59:27,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889189614] [2023-11-17 15:59:27,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:27,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 15:59:27,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:27,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 15:59:27,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-11-17 15:59:27,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 15:59:27,757 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 131 transitions, 1364 flow. Second operand has 21 states, 21 states have (on average 54.857142857142854) internal successors, (1152), 21 states have internal predecessors, (1152), 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) [2023-11-17 15:59:27,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:27,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 15:59:27,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:30,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.00s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 15:59:32,020 INFO L124 PetriNetUnfolderBase]: 403/773 cut-off events. [2023-11-17 15:59:32,020 INFO L125 PetriNetUnfolderBase]: For 12905/12905 co-relation queries the response was YES. [2023-11-17 15:59:32,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4972 conditions, 773 events. 403/773 cut-off events. For 12905/12905 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3983 event pairs, 17 based on Foata normal form. 5/776 useless extension candidates. Maximal degree in co-relation 4849. Up to 336 conditions per place. [2023-11-17 15:59:32,028 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 130 selfloop transitions, 94 changer transitions 30/254 dead transitions. [2023-11-17 15:59:32,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 254 transitions, 2878 flow [2023-11-17 15:59:32,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-17 15:59:32,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-17 15:59:32,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1925 transitions. [2023-11-17 15:59:32,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40229885057471265 [2023-11-17 15:59:32,049 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1925 transitions. [2023-11-17 15:59:32,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1925 transitions. [2023-11-17 15:59:32,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:32,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1925 transitions. [2023-11-17 15:59:32,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 58.333333333333336) internal successors, (1925), 33 states have internal predecessors, (1925), 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) [2023-11-17 15:59:32,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 145.0) internal successors, (4930), 34 states have internal predecessors, (4930), 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) [2023-11-17 15:59:32,064 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 145.0) internal successors, (4930), 34 states have internal predecessors, (4930), 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) [2023-11-17 15:59:32,064 INFO L175 Difference]: Start difference. First operand has 136 places, 131 transitions, 1364 flow. Second operand 33 states and 1925 transitions. [2023-11-17 15:59:32,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 254 transitions, 2878 flow [2023-11-17 15:59:32,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 254 transitions, 2512 flow, removed 107 selfloop flow, removed 20 redundant places. [2023-11-17 15:59:32,102 INFO L231 Difference]: Finished difference. Result has 154 places, 155 transitions, 1689 flow [2023-11-17 15:59:32,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=1689, PETRI_PLACES=154, PETRI_TRANSITIONS=155} [2023-11-17 15:59:32,102 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 134 predicate places. [2023-11-17 15:59:32,102 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 155 transitions, 1689 flow [2023-11-17 15:59:32,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 54.857142857142854) internal successors, (1152), 21 states have internal predecessors, (1152), 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) [2023-11-17 15:59:32,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:32,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:32,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:32,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-17 15:59:32,308 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:32,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:32,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1461655849, now seen corresponding path program 5 times [2023-11-17 15:59:32,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:32,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953355353] [2023-11-17 15:59:32,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:32,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:32,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:32,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:32,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953355353] [2023-11-17 15:59:32,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953355353] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:32,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608185875] [2023-11-17 15:59:32,687 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:59:32,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:32,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:32,689 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:32,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-17 15:59:32,759 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:59:32,759 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:32,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-17 15:59:32,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:32,894 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:33,699 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:33,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608185875] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:33,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:33,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2023-11-17 15:59:33,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648069732] [2023-11-17 15:59:33,700 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:33,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 15:59:33,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:33,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 15:59:33,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2023-11-17 15:59:33,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 15:59:33,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 155 transitions, 1689 flow. Second operand has 18 states, 18 states have (on average 55.0) internal successors, (990), 18 states have internal predecessors, (990), 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) [2023-11-17 15:59:33,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:33,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 15:59:33,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:34,460 INFO L124 PetriNetUnfolderBase]: 409/797 cut-off events. [2023-11-17 15:59:34,460 INFO L125 PetriNetUnfolderBase]: For 14063/14063 co-relation queries the response was YES. [2023-11-17 15:59:34,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5100 conditions, 797 events. 409/797 cut-off events. For 14063/14063 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4196 event pairs, 51 based on Foata normal form. 3/796 useless extension candidates. Maximal degree in co-relation 5037. Up to 652 conditions per place. [2023-11-17 15:59:34,470 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 159 selfloop transitions, 42 changer transitions 17/218 dead transitions. [2023-11-17 15:59:34,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 218 transitions, 2752 flow [2023-11-17 15:59:34,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 15:59:34,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 15:59:34,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 940 transitions. [2023-11-17 15:59:34,472 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4051724137931034 [2023-11-17 15:59:34,473 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 940 transitions. [2023-11-17 15:59:34,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 940 transitions. [2023-11-17 15:59:34,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:34,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 940 transitions. [2023-11-17 15:59:34,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 58.75) internal successors, (940), 16 states have internal predecessors, (940), 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) [2023-11-17 15:59:34,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 145.0) internal successors, (2465), 17 states have internal predecessors, (2465), 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) [2023-11-17 15:59:34,478 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 145.0) internal successors, (2465), 17 states have internal predecessors, (2465), 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) [2023-11-17 15:59:34,478 INFO L175 Difference]: Start difference. First operand has 154 places, 155 transitions, 1689 flow. Second operand 16 states and 940 transitions. [2023-11-17 15:59:34,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 218 transitions, 2752 flow [2023-11-17 15:59:34,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 218 transitions, 2342 flow, removed 174 selfloop flow, removed 15 redundant places. [2023-11-17 15:59:34,534 INFO L231 Difference]: Finished difference. Result has 157 places, 171 transitions, 1770 flow [2023-11-17 15:59:34,534 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=1333, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1770, PETRI_PLACES=157, PETRI_TRANSITIONS=171} [2023-11-17 15:59:34,535 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 137 predicate places. [2023-11-17 15:59:34,535 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 171 transitions, 1770 flow [2023-11-17 15:59:34,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 55.0) internal successors, (990), 18 states have internal predecessors, (990), 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) [2023-11-17 15:59:34,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:34,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:34,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2023-11-17 15:59:34,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-17 15:59:34,736 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:34,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:34,737 INFO L85 PathProgramCache]: Analyzing trace with hash 977103335, now seen corresponding path program 6 times [2023-11-17 15:59:34,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:34,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935047529] [2023-11-17 15:59:34,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:34,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:35,133 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:35,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:35,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935047529] [2023-11-17 15:59:35,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935047529] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:35,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508042622] [2023-11-17 15:59:35,133 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:59:35,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:35,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:35,134 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:35,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-17 15:59:35,189 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-17 15:59:35,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:35,190 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-17 15:59:35,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:35,292 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:35,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:36,051 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:36,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508042622] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:36,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:36,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2023-11-17 15:59:36,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358914237] [2023-11-17 15:59:36,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:36,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 15:59:36,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:36,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 15:59:36,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2023-11-17 15:59:36,054 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 15:59:36,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 171 transitions, 1770 flow. Second operand has 18 states, 18 states have (on average 54.888888888888886) internal successors, (988), 18 states have internal predecessors, (988), 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) [2023-11-17 15:59:36,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:36,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 15:59:36,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:36,943 INFO L124 PetriNetUnfolderBase]: 445/876 cut-off events. [2023-11-17 15:59:36,943 INFO L125 PetriNetUnfolderBase]: For 12965/12965 co-relation queries the response was YES. [2023-11-17 15:59:36,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5335 conditions, 876 events. 445/876 cut-off events. For 12965/12965 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4791 event pairs, 48 based on Foata normal form. 2/866 useless extension candidates. Maximal degree in co-relation 5215. Up to 697 conditions per place. [2023-11-17 15:59:36,952 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 182 selfloop transitions, 57 changer transitions 10/249 dead transitions. [2023-11-17 15:59:36,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 249 transitions, 2982 flow [2023-11-17 15:59:36,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-17 15:59:36,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-17 15:59:36,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1335 transitions. [2023-11-17 15:59:36,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4002998500749625 [2023-11-17 15:59:36,955 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1335 transitions. [2023-11-17 15:59:36,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1335 transitions. [2023-11-17 15:59:36,956 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:36,956 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1335 transitions. [2023-11-17 15:59:36,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 58.04347826086956) internal successors, (1335), 23 states have internal predecessors, (1335), 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) [2023-11-17 15:59:36,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 145.0) internal successors, (3480), 24 states have internal predecessors, (3480), 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) [2023-11-17 15:59:36,963 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 145.0) internal successors, (3480), 24 states have internal predecessors, (3480), 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) [2023-11-17 15:59:36,963 INFO L175 Difference]: Start difference. First operand has 157 places, 171 transitions, 1770 flow. Second operand 23 states and 1335 transitions. [2023-11-17 15:59:36,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 249 transitions, 2982 flow [2023-11-17 15:59:37,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 249 transitions, 2763 flow, removed 103 selfloop flow, removed 4 redundant places. [2023-11-17 15:59:37,006 INFO L231 Difference]: Finished difference. Result has 183 places, 193 transitions, 2193 flow [2023-11-17 15:59:37,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=1565, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2193, PETRI_PLACES=183, PETRI_TRANSITIONS=193} [2023-11-17 15:59:37,007 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 163 predicate places. [2023-11-17 15:59:37,007 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 193 transitions, 2193 flow [2023-11-17 15:59:37,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 54.888888888888886) internal successors, (988), 18 states have internal predecessors, (988), 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) [2023-11-17 15:59:37,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:37,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:37,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:37,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-17 15:59:37,212 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:37,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:37,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1598925609, now seen corresponding path program 7 times [2023-11-17 15:59:37,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:37,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298653361] [2023-11-17 15:59:37,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:37,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:37,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:37,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:37,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298653361] [2023-11-17 15:59:37,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298653361] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:37,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123737712] [2023-11-17 15:59:37,554 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:59:37,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:37,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:37,555 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:37,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-17 15:59:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:37,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-17 15:59:37,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:37,729 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:37,729 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:38,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:38,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123737712] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:38,331 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:38,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2023-11-17 15:59:38,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520631597] [2023-11-17 15:59:38,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:38,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 15:59:38,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:38,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 15:59:38,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-11-17 15:59:38,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 15:59:38,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 193 transitions, 2193 flow. Second operand has 18 states, 18 states have (on average 54.888888888888886) internal successors, (988), 18 states have internal predecessors, (988), 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) [2023-11-17 15:59:38,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:38,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 15:59:38,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:39,096 INFO L124 PetriNetUnfolderBase]: 448/883 cut-off events. [2023-11-17 15:59:39,097 INFO L125 PetriNetUnfolderBase]: For 11737/11737 co-relation queries the response was YES. [2023-11-17 15:59:39,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5433 conditions, 883 events. 448/883 cut-off events. For 11737/11737 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4836 event pairs, 52 based on Foata normal form. 4/871 useless extension candidates. Maximal degree in co-relation 5304. Up to 773 conditions per place. [2023-11-17 15:59:39,106 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 180 selfloop transitions, 43 changer transitions 8/231 dead transitions. [2023-11-17 15:59:39,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 231 transitions, 2877 flow [2023-11-17 15:59:39,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-17 15:59:39,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-17 15:59:39,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1036 transitions. [2023-11-17 15:59:39,108 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3969348659003831 [2023-11-17 15:59:39,108 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1036 transitions. [2023-11-17 15:59:39,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1036 transitions. [2023-11-17 15:59:39,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:39,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1036 transitions. [2023-11-17 15:59:39,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 57.55555555555556) internal successors, (1036), 18 states have internal predecessors, (1036), 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) [2023-11-17 15:59:39,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 145.0) internal successors, (2755), 19 states have internal predecessors, (2755), 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) [2023-11-17 15:59:39,114 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 145.0) internal successors, (2755), 19 states have internal predecessors, (2755), 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) [2023-11-17 15:59:39,114 INFO L175 Difference]: Start difference. First operand has 183 places, 193 transitions, 2193 flow. Second operand 18 states and 1036 transitions. [2023-11-17 15:59:39,115 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 231 transitions, 2877 flow [2023-11-17 15:59:39,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 231 transitions, 2460 flow, removed 182 selfloop flow, removed 14 redundant places. [2023-11-17 15:59:39,162 INFO L231 Difference]: Finished difference. Result has 191 places, 198 transitions, 1986 flow [2023-11-17 15:59:39,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=1784, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1986, PETRI_PLACES=191, PETRI_TRANSITIONS=198} [2023-11-17 15:59:39,163 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 171 predicate places. [2023-11-17 15:59:39,163 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 198 transitions, 1986 flow [2023-11-17 15:59:39,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 54.888888888888886) internal successors, (988), 18 states have internal predecessors, (988), 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) [2023-11-17 15:59:39,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:39,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:39,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:39,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-17 15:59:39,369 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:39,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:39,369 INFO L85 PathProgramCache]: Analyzing trace with hash 103362655, now seen corresponding path program 8 times [2023-11-17 15:59:39,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:39,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484189886] [2023-11-17 15:59:39,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:39,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:39,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:39,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:39,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484189886] [2023-11-17 15:59:39,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484189886] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:39,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980039495] [2023-11-17 15:59:39,782 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 15:59:39,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:39,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:39,783 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:39,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-17 15:59:39,850 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:59:39,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:39,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-17 15:59:39,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:39,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:39,983 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:40,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:40,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980039495] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:40,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:40,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2023-11-17 15:59:40,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400812119] [2023-11-17 15:59:40,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:40,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 15:59:40,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:40,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 15:59:40,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-11-17 15:59:40,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 15:59:40,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 198 transitions, 1986 flow. Second operand has 18 states, 18 states have (on average 54.888888888888886) internal successors, (988), 18 states have internal predecessors, (988), 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) [2023-11-17 15:59:40,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:40,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 15:59:40,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:41,990 INFO L124 PetriNetUnfolderBase]: 478/929 cut-off events. [2023-11-17 15:59:41,990 INFO L125 PetriNetUnfolderBase]: For 12324/12324 co-relation queries the response was YES. [2023-11-17 15:59:41,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5637 conditions, 929 events. 478/929 cut-off events. For 12324/12324 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5095 event pairs, 55 based on Foata normal form. 2/911 useless extension candidates. Maximal degree in co-relation 5506. Up to 742 conditions per place. [2023-11-17 15:59:41,999 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 174 selfloop transitions, 62 changer transitions 10/246 dead transitions. [2023-11-17 15:59:41,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 246 transitions, 2925 flow [2023-11-17 15:59:42,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-17 15:59:42,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-17 15:59:42,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1041 transitions. [2023-11-17 15:59:42,001 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3988505747126437 [2023-11-17 15:59:42,002 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1041 transitions. [2023-11-17 15:59:42,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1041 transitions. [2023-11-17 15:59:42,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:42,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1041 transitions. [2023-11-17 15:59:42,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 57.833333333333336) internal successors, (1041), 18 states have internal predecessors, (1041), 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) [2023-11-17 15:59:42,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 145.0) internal successors, (2755), 19 states have internal predecessors, (2755), 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) [2023-11-17 15:59:42,007 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 145.0) internal successors, (2755), 19 states have internal predecessors, (2755), 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) [2023-11-17 15:59:42,007 INFO L175 Difference]: Start difference. First operand has 191 places, 198 transitions, 1986 flow. Second operand 18 states and 1041 transitions. [2023-11-17 15:59:42,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 246 transitions, 2925 flow [2023-11-17 15:59:42,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 246 transitions, 2825 flow, removed 28 selfloop flow, removed 11 redundant places. [2023-11-17 15:59:42,053 INFO L231 Difference]: Finished difference. Result has 201 places, 208 transitions, 2305 flow [2023-11-17 15:59:42,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=1890, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2305, PETRI_PLACES=201, PETRI_TRANSITIONS=208} [2023-11-17 15:59:42,054 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 181 predicate places. [2023-11-17 15:59:42,054 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 208 transitions, 2305 flow [2023-11-17 15:59:42,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 54.888888888888886) internal successors, (988), 18 states have internal predecessors, (988), 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) [2023-11-17 15:59:42,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:42,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:42,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:42,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:42,259 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:42,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:42,260 INFO L85 PathProgramCache]: Analyzing trace with hash 31172335, now seen corresponding path program 9 times [2023-11-17 15:59:42,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:42,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258887985] [2023-11-17 15:59:42,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:42,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:42,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:42,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:42,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258887985] [2023-11-17 15:59:42,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258887985] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:42,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506867110] [2023-11-17 15:59:42,660 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 15:59:42,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:42,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:42,665 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:42,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-17 15:59:42,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 15:59:42,731 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:42,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-17 15:59:42,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:42,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:42,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:43,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:43,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506867110] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:43,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:43,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2023-11-17 15:59:43,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278391123] [2023-11-17 15:59:43,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:43,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 15:59:43,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:43,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 15:59:43,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-11-17 15:59:43,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 15:59:43,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 208 transitions, 2305 flow. Second operand has 18 states, 18 states have (on average 55.0) internal successors, (990), 18 states have internal predecessors, (990), 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) [2023-11-17 15:59:43,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:43,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 15:59:43,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:44,499 INFO L124 PetriNetUnfolderBase]: 481/936 cut-off events. [2023-11-17 15:59:44,500 INFO L125 PetriNetUnfolderBase]: For 14085/14085 co-relation queries the response was YES. [2023-11-17 15:59:44,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5948 conditions, 936 events. 481/936 cut-off events. For 14085/14085 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5152 event pairs, 55 based on Foata normal form. 2/920 useless extension candidates. Maximal degree in co-relation 5813. Up to 746 conditions per place. [2023-11-17 15:59:44,511 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 178 selfloop transitions, 63 changer transitions 10/251 dead transitions. [2023-11-17 15:59:44,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 251 transitions, 3110 flow [2023-11-17 15:59:44,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-17 15:59:44,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-17 15:59:44,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1049 transitions. [2023-11-17 15:59:44,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019157088122605 [2023-11-17 15:59:44,513 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1049 transitions. [2023-11-17 15:59:44,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1049 transitions. [2023-11-17 15:59:44,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:44,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1049 transitions. [2023-11-17 15:59:44,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 58.27777777777778) internal successors, (1049), 18 states have internal predecessors, (1049), 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) [2023-11-17 15:59:44,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 145.0) internal successors, (2755), 19 states have internal predecessors, (2755), 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) [2023-11-17 15:59:44,518 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 145.0) internal successors, (2755), 19 states have internal predecessors, (2755), 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) [2023-11-17 15:59:44,518 INFO L175 Difference]: Start difference. First operand has 201 places, 208 transitions, 2305 flow. Second operand 18 states and 1049 transitions. [2023-11-17 15:59:44,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 251 transitions, 3110 flow [2023-11-17 15:59:44,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 251 transitions, 2793 flow, removed 127 selfloop flow, removed 12 redundant places. [2023-11-17 15:59:44,592 INFO L231 Difference]: Finished difference. Result has 207 places, 211 transitions, 2307 flow [2023-11-17 15:59:44,592 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=2070, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2307, PETRI_PLACES=207, PETRI_TRANSITIONS=211} [2023-11-17 15:59:44,592 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 187 predicate places. [2023-11-17 15:59:44,592 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 211 transitions, 2307 flow [2023-11-17 15:59:44,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 55.0) internal successors, (990), 18 states have internal predecessors, (990), 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) [2023-11-17 15:59:44,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:44,593 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:44,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:44,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-17 15:59:44,797 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:44,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:44,797 INFO L85 PathProgramCache]: Analyzing trace with hash 904913015, now seen corresponding path program 10 times [2023-11-17 15:59:44,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:44,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573190220] [2023-11-17 15:59:44,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:44,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:44,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:45,176 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:45,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:45,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573190220] [2023-11-17 15:59:45,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573190220] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:45,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584446471] [2023-11-17 15:59:45,177 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:59:45,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:45,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:45,178 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:45,201 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-17 15:59:45,247 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:59:45,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:45,248 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-17 15:59:45,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:45,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:45,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:46,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:46,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584446471] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:46,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:46,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2023-11-17 15:59:46,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840936556] [2023-11-17 15:59:46,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:46,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 15:59:46,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:46,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 15:59:46,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-11-17 15:59:46,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 15:59:46,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 211 transitions, 2307 flow. Second operand has 18 states, 18 states have (on average 55.0) internal successors, (990), 18 states have internal predecessors, (990), 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) [2023-11-17 15:59:46,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:46,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 15:59:46,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:47,089 INFO L124 PetriNetUnfolderBase]: 471/914 cut-off events. [2023-11-17 15:59:47,089 INFO L125 PetriNetUnfolderBase]: For 9961/9961 co-relation queries the response was YES. [2023-11-17 15:59:47,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5526 conditions, 914 events. 471/914 cut-off events. For 9961/9961 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 4981 event pairs, 56 based on Foata normal form. 2/898 useless extension candidates. Maximal degree in co-relation 5450. Up to 768 conditions per place. [2023-11-17 15:59:47,097 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 183 selfloop transitions, 58 changer transitions 10/251 dead transitions. [2023-11-17 15:59:47,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 251 transitions, 2962 flow [2023-11-17 15:59:47,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 15:59:47,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-17 15:59:47,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1209 transitions. [2023-11-17 15:59:47,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39704433497536945 [2023-11-17 15:59:47,098 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1209 transitions. [2023-11-17 15:59:47,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1209 transitions. [2023-11-17 15:59:47,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:47,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1209 transitions. [2023-11-17 15:59:47,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 57.57142857142857) internal successors, (1209), 21 states have internal predecessors, (1209), 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) [2023-11-17 15:59:47,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 145.0) internal successors, (3190), 22 states have internal predecessors, (3190), 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) [2023-11-17 15:59:47,104 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 145.0) internal successors, (3190), 22 states have internal predecessors, (3190), 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) [2023-11-17 15:59:47,104 INFO L175 Difference]: Start difference. First operand has 207 places, 211 transitions, 2307 flow. Second operand 21 states and 1209 transitions. [2023-11-17 15:59:47,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 251 transitions, 2962 flow [2023-11-17 15:59:47,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 251 transitions, 2744 flow, removed 70 selfloop flow, removed 15 redundant places. [2023-11-17 15:59:47,154 INFO L231 Difference]: Finished difference. Result has 214 places, 212 transitions, 2292 flow [2023-11-17 15:59:47,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=2086, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=153, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2292, PETRI_PLACES=214, PETRI_TRANSITIONS=212} [2023-11-17 15:59:47,154 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 194 predicate places. [2023-11-17 15:59:47,154 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 212 transitions, 2292 flow [2023-11-17 15:59:47,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 55.0) internal successors, (990), 18 states have internal predecessors, (990), 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) [2023-11-17 15:59:47,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:47,155 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:47,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:47,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-17 15:59:47,365 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:47,365 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:47,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1976277947, now seen corresponding path program 4 times [2023-11-17 15:59:47,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:47,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693596915] [2023-11-17 15:59:47,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:47,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:47,508 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:47,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:47,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693596915] [2023-11-17 15:59:47,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693596915] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:47,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084584665] [2023-11-17 15:59:47,508 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 15:59:47,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:47,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:47,513 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:47,528 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-17 15:59:47,592 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 15:59:47,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:47,594 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 15:59:47,594 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:47,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:47,666 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:47,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 15:59:47,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084584665] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:47,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:47,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 11 [2023-11-17 15:59:47,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518955413] [2023-11-17 15:59:47,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:47,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 15:59:47,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:47,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 15:59:47,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-11-17 15:59:47,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 145 [2023-11-17 15:59:47,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 212 transitions, 2292 flow. Second operand has 13 states, 13 states have (on average 63.84615384615385) internal successors, (830), 13 states have internal predecessors, (830), 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) [2023-11-17 15:59:47,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:47,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 145 [2023-11-17 15:59:47,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:48,362 INFO L124 PetriNetUnfolderBase]: 521/1012 cut-off events. [2023-11-17 15:59:48,362 INFO L125 PetriNetUnfolderBase]: For 15686/15686 co-relation queries the response was YES. [2023-11-17 15:59:48,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6628 conditions, 1012 events. 521/1012 cut-off events. For 15686/15686 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5671 event pairs, 49 based on Foata normal form. 3/1001 useless extension candidates. Maximal degree in co-relation 6491. Up to 828 conditions per place. [2023-11-17 15:59:48,373 INFO L140 encePairwiseOnDemand]: 139/145 looper letters, 214 selfloop transitions, 35 changer transitions 21/270 dead transitions. [2023-11-17 15:59:48,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 270 transitions, 3532 flow [2023-11-17 15:59:48,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 15:59:48,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 15:59:48,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1064 transitions. [2023-11-17 15:59:48,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4586206896551724 [2023-11-17 15:59:48,375 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1064 transitions. [2023-11-17 15:59:48,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1064 transitions. [2023-11-17 15:59:48,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:48,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1064 transitions. [2023-11-17 15:59:48,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 66.5) internal successors, (1064), 16 states have internal predecessors, (1064), 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) [2023-11-17 15:59:48,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 145.0) internal successors, (2465), 17 states have internal predecessors, (2465), 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) [2023-11-17 15:59:48,379 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 145.0) internal successors, (2465), 17 states have internal predecessors, (2465), 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) [2023-11-17 15:59:48,379 INFO L175 Difference]: Start difference. First operand has 214 places, 212 transitions, 2292 flow. Second operand 16 states and 1064 transitions. [2023-11-17 15:59:48,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 270 transitions, 3532 flow [2023-11-17 15:59:48,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 270 transitions, 3379 flow, removed 27 selfloop flow, removed 19 redundant places. [2023-11-17 15:59:48,433 INFO L231 Difference]: Finished difference. Result has 212 places, 221 transitions, 2403 flow [2023-11-17 15:59:48,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=2145, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2403, PETRI_PLACES=212, PETRI_TRANSITIONS=221} [2023-11-17 15:59:48,434 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 192 predicate places. [2023-11-17 15:59:48,434 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 221 transitions, 2403 flow [2023-11-17 15:59:48,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 63.84615384615385) internal successors, (830), 13 states have internal predecessors, (830), 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) [2023-11-17 15:59:48,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:48,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:48,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:48,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-17 15:59:48,648 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:48,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:48,648 INFO L85 PathProgramCache]: Analyzing trace with hash 371103743, now seen corresponding path program 11 times [2023-11-17 15:59:48,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:48,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183148869] [2023-11-17 15:59:48,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:48,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:48,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:48,972 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:48,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:48,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183148869] [2023-11-17 15:59:48,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183148869] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:48,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734441056] [2023-11-17 15:59:48,972 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 15:59:48,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:48,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:48,977 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:49,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-17 15:59:49,056 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 15:59:49,056 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:49,057 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-17 15:59:49,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:49,229 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:49,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:49,568 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:49,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734441056] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:49,568 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:49,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2023-11-17 15:59:49,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425172235] [2023-11-17 15:59:49,568 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:49,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 15:59:49,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:49,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 15:59:49,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-17 15:59:49,570 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 15:59:49,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 221 transitions, 2403 flow. Second operand has 18 states, 18 states have (on average 54.94444444444444) internal successors, (989), 18 states have internal predecessors, (989), 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) [2023-11-17 15:59:49,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:49,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 15:59:49,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:50,554 INFO L124 PetriNetUnfolderBase]: 534/1041 cut-off events. [2023-11-17 15:59:50,554 INFO L125 PetriNetUnfolderBase]: For 16237/16237 co-relation queries the response was YES. [2023-11-17 15:59:50,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6801 conditions, 1041 events. 534/1041 cut-off events. For 16237/16237 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5913 event pairs, 61 based on Foata normal form. 4/1031 useless extension candidates. Maximal degree in co-relation 6662. Up to 839 conditions per place. [2023-11-17 15:59:50,563 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 198 selfloop transitions, 68 changer transitions 23/289 dead transitions. [2023-11-17 15:59:50,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 289 transitions, 3765 flow [2023-11-17 15:59:50,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 15:59:50,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-17 15:59:50,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1212 transitions. [2023-11-17 15:59:50,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3980295566502463 [2023-11-17 15:59:50,565 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1212 transitions. [2023-11-17 15:59:50,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1212 transitions. [2023-11-17 15:59:50,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:50,566 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1212 transitions. [2023-11-17 15:59:50,567 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 57.714285714285715) internal successors, (1212), 21 states have internal predecessors, (1212), 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) [2023-11-17 15:59:50,570 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 145.0) internal successors, (3190), 22 states have internal predecessors, (3190), 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) [2023-11-17 15:59:50,570 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 145.0) internal successors, (3190), 22 states have internal predecessors, (3190), 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) [2023-11-17 15:59:50,570 INFO L175 Difference]: Start difference. First operand has 212 places, 221 transitions, 2403 flow. Second operand 21 states and 1212 transitions. [2023-11-17 15:59:50,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 289 transitions, 3765 flow [2023-11-17 15:59:50,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 289 transitions, 3587 flow, removed 76 selfloop flow, removed 7 redundant places. [2023-11-17 15:59:50,626 INFO L231 Difference]: Finished difference. Result has 232 places, 240 transitions, 2891 flow [2023-11-17 15:59:50,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=2277, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2891, PETRI_PLACES=232, PETRI_TRANSITIONS=240} [2023-11-17 15:59:50,626 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 212 predicate places. [2023-11-17 15:59:50,627 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 240 transitions, 2891 flow [2023-11-17 15:59:50,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 54.94444444444444) internal successors, (989), 18 states have internal predecessors, (989), 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) [2023-11-17 15:59:50,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:50,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:50,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:50,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:50,832 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:50,832 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:50,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1253426775, now seen corresponding path program 12 times [2023-11-17 15:59:50,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:50,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170900359] [2023-11-17 15:59:50,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:50,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:50,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:51,258 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:51,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:51,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170900359] [2023-11-17 15:59:51,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170900359] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:51,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994518066] [2023-11-17 15:59:51,258 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 15:59:51,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:51,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:51,261 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:51,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-17 15:59:51,344 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 15:59:51,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 15:59:51,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-17 15:59:51,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:51,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:51,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:51,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:51,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994518066] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:51,848 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:51,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 17 [2023-11-17 15:59:51,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923725405] [2023-11-17 15:59:51,848 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:51,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-17 15:59:51,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:51,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-17 15:59:51,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-11-17 15:59:51,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 15:59:51,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 240 transitions, 2891 flow. Second operand has 19 states, 19 states have (on average 54.89473684210526) internal successors, (1043), 19 states have internal predecessors, (1043), 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) [2023-11-17 15:59:51,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:51,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 15:59:51,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:59:53,338 INFO L124 PetriNetUnfolderBase]: 577/1117 cut-off events. [2023-11-17 15:59:53,338 INFO L125 PetriNetUnfolderBase]: For 23692/23692 co-relation queries the response was YES. [2023-11-17 15:59:53,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8063 conditions, 1117 events. 577/1117 cut-off events. For 23692/23692 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6437 event pairs, 61 based on Foata normal form. 4/1107 useless extension candidates. Maximal degree in co-relation 7916. Up to 815 conditions per place. [2023-11-17 15:59:53,348 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 204 selfloop transitions, 97 changer transitions 17/318 dead transitions. [2023-11-17 15:59:53,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 318 transitions, 4621 flow [2023-11-17 15:59:53,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-17 15:59:53,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-17 15:59:53,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1340 transitions. [2023-11-17 15:59:53,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017991004497751 [2023-11-17 15:59:53,350 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1340 transitions. [2023-11-17 15:59:53,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1340 transitions. [2023-11-17 15:59:53,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:59:53,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1340 transitions. [2023-11-17 15:59:53,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 58.26086956521739) internal successors, (1340), 23 states have internal predecessors, (1340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:59:53,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 145.0) internal successors, (3480), 24 states have internal predecessors, (3480), 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) [2023-11-17 15:59:53,353 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 145.0) internal successors, (3480), 24 states have internal predecessors, (3480), 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) [2023-11-17 15:59:53,354 INFO L175 Difference]: Start difference. First operand has 232 places, 240 transitions, 2891 flow. Second operand 23 states and 1340 transitions. [2023-11-17 15:59:53,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 318 transitions, 4621 flow [2023-11-17 15:59:53,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 318 transitions, 4129 flow, removed 226 selfloop flow, removed 7 redundant places. [2023-11-17 15:59:53,454 INFO L231 Difference]: Finished difference. Result has 252 places, 263 transitions, 3369 flow [2023-11-17 15:59:53,455 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=2498, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=3369, PETRI_PLACES=252, PETRI_TRANSITIONS=263} [2023-11-17 15:59:53,455 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 232 predicate places. [2023-11-17 15:59:53,455 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 263 transitions, 3369 flow [2023-11-17 15:59:53,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 54.89473684210526) internal successors, (1043), 19 states have internal predecessors, (1043), 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) [2023-11-17 15:59:53,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:59:53,456 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:59:53,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-17 15:59:53,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:53,661 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 15:59:53,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:59:53,661 INFO L85 PathProgramCache]: Analyzing trace with hash 597255726, now seen corresponding path program 13 times [2023-11-17 15:59:53,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:59:53,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389944465] [2023-11-17 15:59:53,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:59:53,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:59:53,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:54,443 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:54,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:59:54,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389944465] [2023-11-17 15:59:54,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389944465] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 15:59:54,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1924326255] [2023-11-17 15:59:54,444 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 15:59:54,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 15:59:54,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:59:54,445 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 15:59:54,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-17 15:59:54,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:59:54,645 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 15:59:54,646 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 15:59:54,863 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:54,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 15:59:55,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:59:55,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1924326255] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 15:59:55,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 15:59:55,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2023-11-17 15:59:55,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700478447] [2023-11-17 15:59:55,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 15:59:55,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 15:59:55,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:59:55,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 15:59:55,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=369, Unknown=0, NotChecked=0, Total=462 [2023-11-17 15:59:55,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 15:59:55,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 263 transitions, 3369 flow. Second operand has 22 states, 22 states have (on average 54.72727272727273) internal successors, (1204), 22 states have internal predecessors, (1204), 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) [2023-11-17 15:59:55,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:59:55,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 15:59:55,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:00,287 INFO L124 PetriNetUnfolderBase]: 652/1280 cut-off events. [2023-11-17 16:00:00,288 INFO L125 PetriNetUnfolderBase]: For 32888/32888 co-relation queries the response was YES. [2023-11-17 16:00:00,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9990 conditions, 1280 events. 652/1280 cut-off events. For 32888/32888 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7642 event pairs, 56 based on Foata normal form. 5/1271 useless extension candidates. Maximal degree in co-relation 9837. Up to 845 conditions per place. [2023-11-17 16:00:00,296 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 219 selfloop transitions, 134 changer transitions 18/371 dead transitions. [2023-11-17 16:00:00,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 371 transitions, 5934 flow [2023-11-17 16:00:00,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-17 16:00:00,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-17 16:00:00,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 1800 transitions. [2023-11-17 16:00:00,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40044493882091214 [2023-11-17 16:00:00,300 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 1800 transitions. [2023-11-17 16:00:00,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 1800 transitions. [2023-11-17 16:00:00,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:00,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 1800 transitions. [2023-11-17 16:00:00,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 58.064516129032256) internal successors, (1800), 31 states have internal predecessors, (1800), 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) [2023-11-17 16:00:00,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 145.0) internal successors, (4640), 32 states have internal predecessors, (4640), 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) [2023-11-17 16:00:00,307 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 145.0) internal successors, (4640), 32 states have internal predecessors, (4640), 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) [2023-11-17 16:00:00,308 INFO L175 Difference]: Start difference. First operand has 252 places, 263 transitions, 3369 flow. Second operand 31 states and 1800 transitions. [2023-11-17 16:00:00,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 371 transitions, 5934 flow [2023-11-17 16:00:00,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 371 transitions, 5000 flow, removed 442 selfloop flow, removed 7 redundant places. [2023-11-17 16:00:00,422 INFO L231 Difference]: Finished difference. Result has 281 places, 300 transitions, 4230 flow [2023-11-17 16:00:00,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=2913, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=4230, PETRI_PLACES=281, PETRI_TRANSITIONS=300} [2023-11-17 16:00:00,423 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 261 predicate places. [2023-11-17 16:00:00,423 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 300 transitions, 4230 flow [2023-11-17 16:00:00,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 54.72727272727273) internal successors, (1204), 22 states have internal predecessors, (1204), 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) [2023-11-17 16:00:00,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:00,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:00,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-17 16:00:00,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-17 16:00:00,624 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:00:00,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:00,625 INFO L85 PathProgramCache]: Analyzing trace with hash 37115807, now seen corresponding path program 14 times [2023-11-17 16:00:00,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:00,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868375095] [2023-11-17 16:00:00,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:00,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:00,962 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:00,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:00,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868375095] [2023-11-17 16:00:00,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868375095] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:00,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423713815] [2023-11-17 16:00:00,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:00:00,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:00,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:00,964 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:00:00,987 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-17 16:00:01,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:00:01,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:00:01,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-17 16:00:01,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:01,173 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:01,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:00:01,957 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:01,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423713815] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:00:01,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:00:01,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2023-11-17 16:00:01,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850596503] [2023-11-17 16:00:01,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:00:01,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 16:00:01,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:01,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 16:00:01,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2023-11-17 16:00:01,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 16:00:01,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 300 transitions, 4230 flow. Second operand has 18 states, 18 states have (on average 54.94444444444444) internal successors, (989), 18 states have internal predecessors, (989), 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) [2023-11-17 16:00:01,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:01,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 16:00:01,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:03,381 INFO L124 PetriNetUnfolderBase]: 679/1318 cut-off events. [2023-11-17 16:00:03,381 INFO L125 PetriNetUnfolderBase]: For 35886/35886 co-relation queries the response was YES. [2023-11-17 16:00:03,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10285 conditions, 1318 events. 679/1318 cut-off events. For 35886/35886 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7860 event pairs, 62 based on Foata normal form. 2/1306 useless extension candidates. Maximal degree in co-relation 10182. Up to 1142 conditions per place. [2023-11-17 16:00:03,395 INFO L140 encePairwiseOnDemand]: 136/145 looper letters, 298 selfloop transitions, 58 changer transitions 10/366 dead transitions. [2023-11-17 16:00:03,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 366 transitions, 5719 flow [2023-11-17 16:00:03,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-17 16:00:03,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-17 16:00:03,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1387 transitions. [2023-11-17 16:00:03,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3985632183908046 [2023-11-17 16:00:03,403 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1387 transitions. [2023-11-17 16:00:03,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1387 transitions. [2023-11-17 16:00:03,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:03,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1387 transitions. [2023-11-17 16:00:03,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 57.791666666666664) internal successors, (1387), 24 states have internal predecessors, (1387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:00:03,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 145.0) internal successors, (3625), 25 states have internal predecessors, (3625), 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) [2023-11-17 16:00:03,408 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 145.0) internal successors, (3625), 25 states have internal predecessors, (3625), 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) [2023-11-17 16:00:03,409 INFO L175 Difference]: Start difference. First operand has 281 places, 300 transitions, 4230 flow. Second operand 24 states and 1387 transitions. [2023-11-17 16:00:03,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 366 transitions, 5719 flow [2023-11-17 16:00:03,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 366 transitions, 4819 flow, removed 382 selfloop flow, removed 19 redundant places. [2023-11-17 16:00:03,608 INFO L231 Difference]: Finished difference. Result has 289 places, 314 transitions, 3916 flow [2023-11-17 16:00:03,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=3359, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3916, PETRI_PLACES=289, PETRI_TRANSITIONS=314} [2023-11-17 16:00:03,609 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 269 predicate places. [2023-11-17 16:00:03,609 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 314 transitions, 3916 flow [2023-11-17 16:00:03,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 54.94444444444444) internal successors, (989), 18 states have internal predecessors, (989), 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) [2023-11-17 16:00:03,609 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:03,609 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:03,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-17 16:00:03,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-17 16:00:03,810 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:00:03,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:03,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1082599987, now seen corresponding path program 4 times [2023-11-17 16:00:03,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:03,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580147741] [2023-11-17 16:00:03,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:03,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:03,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:03,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:03,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580147741] [2023-11-17 16:00:03,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580147741] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:03,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129220164] [2023-11-17 16:00:03,944 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:00:03,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:03,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:03,945 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:00:03,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-17 16:00:04,067 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:00:04,067 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:00:04,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-17 16:00:04,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:04,150 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:00:06,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:06,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129220164] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:00:06,280 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:00:06,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 13 [2023-11-17 16:00:06,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612819343] [2023-11-17 16:00:06,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:00:06,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 16:00:06,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:06,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 16:00:06,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=150, Unknown=1, NotChecked=0, Total=210 [2023-11-17 16:00:06,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 145 [2023-11-17 16:00:06,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 314 transitions, 3916 flow. Second operand has 15 states, 15 states have (on average 57.6) internal successors, (864), 15 states have internal predecessors, (864), 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) [2023-11-17 16:00:06,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:06,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 145 [2023-11-17 16:00:06,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:06,775 INFO L124 PetriNetUnfolderBase]: 673/1314 cut-off events. [2023-11-17 16:00:06,776 INFO L125 PetriNetUnfolderBase]: For 23778/23778 co-relation queries the response was YES. [2023-11-17 16:00:06,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9124 conditions, 1314 events. 673/1314 cut-off events. For 23778/23778 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7854 event pairs, 66 based on Foata normal form. 4/1300 useless extension candidates. Maximal degree in co-relation 8962. Up to 1202 conditions per place. [2023-11-17 16:00:06,789 INFO L140 encePairwiseOnDemand]: 138/145 looper letters, 292 selfloop transitions, 29 changer transitions 23/344 dead transitions. [2023-11-17 16:00:06,789 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 344 transitions, 4728 flow [2023-11-17 16:00:06,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-17 16:00:06,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-17 16:00:06,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 727 transitions. [2023-11-17 16:00:06,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.417816091954023 [2023-11-17 16:00:06,791 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 727 transitions. [2023-11-17 16:00:06,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 727 transitions. [2023-11-17 16:00:06,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:06,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 727 transitions. [2023-11-17 16:00:06,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 60.583333333333336) internal successors, (727), 12 states have internal predecessors, (727), 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) [2023-11-17 16:00:06,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 145.0) internal successors, (1885), 13 states have internal predecessors, (1885), 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) [2023-11-17 16:00:06,799 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 145.0) internal successors, (1885), 13 states have internal predecessors, (1885), 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) [2023-11-17 16:00:06,799 INFO L175 Difference]: Start difference. First operand has 289 places, 314 transitions, 3916 flow. Second operand 12 states and 727 transitions. [2023-11-17 16:00:06,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 344 transitions, 4728 flow [2023-11-17 16:00:06,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 344 transitions, 4342 flow, removed 163 selfloop flow, removed 17 redundant places. [2023-11-17 16:00:06,980 INFO L231 Difference]: Finished difference. Result has 284 places, 308 transitions, 3492 flow [2023-11-17 16:00:06,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=3523, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3492, PETRI_PLACES=284, PETRI_TRANSITIONS=308} [2023-11-17 16:00:06,981 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 264 predicate places. [2023-11-17 16:00:06,981 INFO L495 AbstractCegarLoop]: Abstraction has has 284 places, 308 transitions, 3492 flow [2023-11-17 16:00:06,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 57.6) internal successors, (864), 15 states have internal predecessors, (864), 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) [2023-11-17 16:00:06,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:06,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:06,986 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2023-11-17 16:00:07,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:07,187 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:00:07,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:07,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1593674057, now seen corresponding path program 15 times [2023-11-17 16:00:07,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:07,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308654466] [2023-11-17 16:00:07,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:07,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:07,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:07,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:07,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308654466] [2023-11-17 16:00:07,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308654466] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:07,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688954577] [2023-11-17 16:00:07,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:00:07,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:07,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:07,509 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:00:07,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-11-17 16:00:07,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 16:00:07,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:00:07,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-17 16:00:07,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:07,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:07,722 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:00:08,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:08,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688954577] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:00:08,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:00:08,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2023-11-17 16:00:08,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683120766] [2023-11-17 16:00:08,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:00:08,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 16:00:08,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:08,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 16:00:08,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2023-11-17 16:00:08,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 16:00:08,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 308 transitions, 3492 flow. Second operand has 18 states, 18 states have (on average 54.888888888888886) internal successors, (988), 18 states have internal predecessors, (988), 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) [2023-11-17 16:00:08,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:08,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 16:00:08,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:09,072 INFO L124 PetriNetUnfolderBase]: 674/1306 cut-off events. [2023-11-17 16:00:09,072 INFO L125 PetriNetUnfolderBase]: For 22915/22915 co-relation queries the response was YES. [2023-11-17 16:00:09,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8956 conditions, 1306 events. 674/1306 cut-off events. For 22915/22915 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7726 event pairs, 70 based on Foata normal form. 2/1286 useless extension candidates. Maximal degree in co-relation 8796. Up to 1220 conditions per place. [2023-11-17 16:00:09,083 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 298 selfloop transitions, 39 changer transitions 7/344 dead transitions. [2023-11-17 16:00:09,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 344 transitions, 4673 flow [2023-11-17 16:00:09,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 16:00:09,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 16:00:09,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 922 transitions. [2023-11-17 16:00:09,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39741379310344827 [2023-11-17 16:00:09,084 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 922 transitions. [2023-11-17 16:00:09,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 922 transitions. [2023-11-17 16:00:09,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:09,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 922 transitions. [2023-11-17 16:00:09,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 57.625) internal successors, (922), 16 states have internal predecessors, (922), 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) [2023-11-17 16:00:09,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 145.0) internal successors, (2465), 17 states have internal predecessors, (2465), 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) [2023-11-17 16:00:09,113 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 145.0) internal successors, (2465), 17 states have internal predecessors, (2465), 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) [2023-11-17 16:00:09,113 INFO L175 Difference]: Start difference. First operand has 284 places, 308 transitions, 3492 flow. Second operand 16 states and 922 transitions. [2023-11-17 16:00:09,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 344 transitions, 4673 flow [2023-11-17 16:00:09,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 344 transitions, 4582 flow, removed 19 selfloop flow, removed 10 redundant places. [2023-11-17 16:00:09,229 INFO L231 Difference]: Finished difference. Result has 287 places, 316 transitions, 3830 flow [2023-11-17 16:00:09,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=3403, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3830, PETRI_PLACES=287, PETRI_TRANSITIONS=316} [2023-11-17 16:00:09,230 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 267 predicate places. [2023-11-17 16:00:09,230 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 316 transitions, 3830 flow [2023-11-17 16:00:09,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 54.888888888888886) internal successors, (988), 18 states have internal predecessors, (988), 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) [2023-11-17 16:00:09,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:09,230 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:09,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-11-17 16:00:09,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:09,431 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:00:09,432 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:09,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1430687937, now seen corresponding path program 16 times [2023-11-17 16:00:09,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:09,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943141530] [2023-11-17 16:00:09,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:09,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:09,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:09,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:09,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:09,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943141530] [2023-11-17 16:00:09,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943141530] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:09,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026080128] [2023-11-17 16:00:09,706 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:00:09,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:09,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:09,707 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:00:09,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-11-17 16:00:09,768 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:00:09,769 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:00:09,769 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-17 16:00:09,770 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:09,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:09,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:00:10,601 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:10,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026080128] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:00:10,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:00:10,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2023-11-17 16:00:10,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681607644] [2023-11-17 16:00:10,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:00:10,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 16:00:10,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:10,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 16:00:10,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2023-11-17 16:00:10,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 16:00:10,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 316 transitions, 3830 flow. Second operand has 18 states, 18 states have (on average 54.94444444444444) internal successors, (989), 18 states have internal predecessors, (989), 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) [2023-11-17 16:00:10,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:10,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 16:00:10,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:11,440 INFO L124 PetriNetUnfolderBase]: 690/1339 cut-off events. [2023-11-17 16:00:11,440 INFO L125 PetriNetUnfolderBase]: For 26858/26858 co-relation queries the response was YES. [2023-11-17 16:00:11,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9435 conditions, 1339 events. 690/1339 cut-off events. For 26858/26858 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7971 event pairs, 66 based on Foata normal form. 3/1320 useless extension candidates. Maximal degree in co-relation 9275. Up to 1217 conditions per place. [2023-11-17 16:00:11,451 INFO L140 encePairwiseOnDemand]: 136/145 looper letters, 307 selfloop transitions, 41 changer transitions 9/357 dead transitions. [2023-11-17 16:00:11,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 357 transitions, 4827 flow [2023-11-17 16:00:11,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 16:00:11,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 16:00:11,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 987 transitions. [2023-11-17 16:00:11,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40040567951318456 [2023-11-17 16:00:11,452 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 987 transitions. [2023-11-17 16:00:11,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 987 transitions. [2023-11-17 16:00:11,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:11,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 987 transitions. [2023-11-17 16:00:11,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 58.05882352941177) internal successors, (987), 17 states have internal predecessors, (987), 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) [2023-11-17 16:00:11,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 145.0) internal successors, (2610), 18 states have internal predecessors, (2610), 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) [2023-11-17 16:00:11,456 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 145.0) internal successors, (2610), 18 states have internal predecessors, (2610), 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) [2023-11-17 16:00:11,456 INFO L175 Difference]: Start difference. First operand has 287 places, 316 transitions, 3830 flow. Second operand 17 states and 987 transitions. [2023-11-17 16:00:11,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 357 transitions, 4827 flow [2023-11-17 16:00:11,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 357 transitions, 4521 flow, removed 119 selfloop flow, removed 13 redundant places. [2023-11-17 16:00:11,594 INFO L231 Difference]: Finished difference. Result has 293 places, 319 transitions, 3707 flow [2023-11-17 16:00:11,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=3524, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3707, PETRI_PLACES=293, PETRI_TRANSITIONS=319} [2023-11-17 16:00:11,595 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 273 predicate places. [2023-11-17 16:00:11,595 INFO L495 AbstractCegarLoop]: Abstraction has has 293 places, 319 transitions, 3707 flow [2023-11-17 16:00:11,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 54.94444444444444) internal successors, (989), 18 states have internal predecessors, (989), 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) [2023-11-17 16:00:11,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:11,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:11,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-11-17 16:00:11,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-17 16:00:11,797 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:00:11,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:11,797 INFO L85 PathProgramCache]: Analyzing trace with hash 982354887, now seen corresponding path program 17 times [2023-11-17 16:00:11,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:11,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758305601] [2023-11-17 16:00:11,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:11,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:12,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:12,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:12,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758305601] [2023-11-17 16:00:12,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758305601] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:12,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881906284] [2023-11-17 16:00:12,180 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:00:12,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:12,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:12,181 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:00:12,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2023-11-17 16:00:12,245 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:00:12,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:00:12,246 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-17 16:00:12,247 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:12,358 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:12,358 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:00:12,991 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:12,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881906284] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:00:12,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:00:12,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2023-11-17 16:00:12,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220420446] [2023-11-17 16:00:12,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:00:12,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 16:00:12,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:12,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 16:00:12,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2023-11-17 16:00:12,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 16:00:12,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 293 places, 319 transitions, 3707 flow. Second operand has 18 states, 18 states have (on average 54.888888888888886) internal successors, (988), 18 states have internal predecessors, (988), 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) [2023-11-17 16:00:12,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:12,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 16:00:12,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:14,177 INFO L124 PetriNetUnfolderBase]: 714/1396 cut-off events. [2023-11-17 16:00:14,178 INFO L125 PetriNetUnfolderBase]: For 32483/32483 co-relation queries the response was YES. [2023-11-17 16:00:14,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10119 conditions, 1396 events. 714/1396 cut-off events. For 32483/32483 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 8446 event pairs, 68 based on Foata normal form. 2/1376 useless extension candidates. Maximal degree in co-relation 9958. Up to 1229 conditions per place. [2023-11-17 16:00:14,189 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 307 selfloop transitions, 60 changer transitions 8/375 dead transitions. [2023-11-17 16:00:14,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 375 transitions, 5264 flow [2023-11-17 16:00:14,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-17 16:00:14,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-17 16:00:14,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1158 transitions. [2023-11-17 16:00:14,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3993103448275862 [2023-11-17 16:00:14,191 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1158 transitions. [2023-11-17 16:00:14,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1158 transitions. [2023-11-17 16:00:14,191 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:14,191 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1158 transitions. [2023-11-17 16:00:14,192 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 57.9) internal successors, (1158), 20 states have internal predecessors, (1158), 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) [2023-11-17 16:00:14,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 145.0) internal successors, (3045), 21 states have internal predecessors, (3045), 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) [2023-11-17 16:00:14,194 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 145.0) internal successors, (3045), 21 states have internal predecessors, (3045), 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) [2023-11-17 16:00:14,194 INFO L175 Difference]: Start difference. First operand has 293 places, 319 transitions, 3707 flow. Second operand 20 states and 1158 transitions. [2023-11-17 16:00:14,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 375 transitions, 5264 flow [2023-11-17 16:00:14,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 375 transitions, 5117 flow, removed 29 selfloop flow, removed 17 redundant places. [2023-11-17 16:00:14,369 INFO L231 Difference]: Finished difference. Result has 301 places, 331 transitions, 4243 flow [2023-11-17 16:00:14,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=3572, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4243, PETRI_PLACES=301, PETRI_TRANSITIONS=331} [2023-11-17 16:00:14,369 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 281 predicate places. [2023-11-17 16:00:14,370 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 331 transitions, 4243 flow [2023-11-17 16:00:14,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 54.888888888888886) internal successors, (988), 18 states have internal predecessors, (988), 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) [2023-11-17 16:00:14,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:14,370 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:14,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2023-11-17 16:00:14,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-17 16:00:14,571 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:00:14,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:14,571 INFO L85 PathProgramCache]: Analyzing trace with hash 910164567, now seen corresponding path program 18 times [2023-11-17 16:00:14,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:14,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113012703] [2023-11-17 16:00:14,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:14,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:14,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:14,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:14,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113012703] [2023-11-17 16:00:14,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113012703] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:14,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991099661] [2023-11-17 16:00:14,926 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:00:14,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:14,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:14,927 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:00:14,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2023-11-17 16:00:14,987 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 16:00:14,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:00:14,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-17 16:00:14,988 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:15,095 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:15,095 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:00:15,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:15,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991099661] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:00:15,826 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:00:15,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 16 [2023-11-17 16:00:15,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726014281] [2023-11-17 16:00:15,826 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:00:15,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 16:00:15,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:15,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 16:00:15,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2023-11-17 16:00:15,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 16:00:15,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 331 transitions, 4243 flow. Second operand has 18 states, 18 states have (on average 55.0) internal successors, (990), 18 states have internal predecessors, (990), 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) [2023-11-17 16:00:15,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:15,828 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 16:00:15,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:16,648 INFO L124 PetriNetUnfolderBase]: 710/1380 cut-off events. [2023-11-17 16:00:16,648 INFO L125 PetriNetUnfolderBase]: For 33295/33295 co-relation queries the response was YES. [2023-11-17 16:00:16,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10115 conditions, 1380 events. 710/1380 cut-off events. For 33295/33295 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8298 event pairs, 68 based on Foata normal form. 2/1362 useless extension candidates. Maximal degree in co-relation 9949. Up to 1229 conditions per place. [2023-11-17 16:00:16,659 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 296 selfloop transitions, 59 changer transitions 10/365 dead transitions. [2023-11-17 16:00:16,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 365 transitions, 5215 flow [2023-11-17 16:00:16,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 16:00:16,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 16:00:16,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 983 transitions. [2023-11-17 16:00:16,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39878296146044623 [2023-11-17 16:00:16,660 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 983 transitions. [2023-11-17 16:00:16,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 983 transitions. [2023-11-17 16:00:16,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:16,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 983 transitions. [2023-11-17 16:00:16,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 57.8235294117647) internal successors, (983), 17 states have internal predecessors, (983), 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) [2023-11-17 16:00:16,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 145.0) internal successors, (2610), 18 states have internal predecessors, (2610), 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) [2023-11-17 16:00:16,663 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 145.0) internal successors, (2610), 18 states have internal predecessors, (2610), 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) [2023-11-17 16:00:16,663 INFO L175 Difference]: Start difference. First operand has 301 places, 331 transitions, 4243 flow. Second operand 17 states and 983 transitions. [2023-11-17 16:00:16,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 365 transitions, 5215 flow [2023-11-17 16:00:16,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 365 transitions, 4662 flow, removed 245 selfloop flow, removed 12 redundant places. [2023-11-17 16:00:16,823 INFO L231 Difference]: Finished difference. Result has 306 places, 332 transitions, 3979 flow [2023-11-17 16:00:16,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=3731, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3979, PETRI_PLACES=306, PETRI_TRANSITIONS=332} [2023-11-17 16:00:16,824 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 286 predicate places. [2023-11-17 16:00:16,824 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 332 transitions, 3979 flow [2023-11-17 16:00:16,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 55.0) internal successors, (990), 18 states have internal predecessors, (990), 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) [2023-11-17 16:00:16,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:16,824 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:16,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2023-11-17 16:00:17,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-17 16:00:17,025 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:00:17,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:17,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1931192314, now seen corresponding path program 5 times [2023-11-17 16:00:17,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:17,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397120148] [2023-11-17 16:00:17,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:17,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:17,171 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:17,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:17,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397120148] [2023-11-17 16:00:17,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397120148] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:17,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1531289227] [2023-11-17 16:00:17,172 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:00:17,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:17,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:17,173 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:00:17,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2023-11-17 16:00:17,263 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 16:00:17,263 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:00:17,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-17 16:00:17,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:17,356 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:00:17,509 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:17,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1531289227] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:00:17,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:00:17,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 5] total 14 [2023-11-17 16:00:17,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419532576] [2023-11-17 16:00:17,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:00:17,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 16:00:17,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:17,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 16:00:17,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2023-11-17 16:00:17,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 145 [2023-11-17 16:00:17,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 332 transitions, 3979 flow. Second operand has 16 states, 16 states have (on average 57.625) internal successors, (922), 16 states have internal predecessors, (922), 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) [2023-11-17 16:00:17,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:17,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 145 [2023-11-17 16:00:17,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:18,166 INFO L124 PetriNetUnfolderBase]: 708/1381 cut-off events. [2023-11-17 16:00:18,166 INFO L125 PetriNetUnfolderBase]: For 26401/26401 co-relation queries the response was YES. [2023-11-17 16:00:18,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9583 conditions, 1381 events. 708/1381 cut-off events. For 26401/26401 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 8383 event pairs, 40 based on Foata normal form. 3/1362 useless extension candidates. Maximal degree in co-relation 9416. Up to 1157 conditions per place. [2023-11-17 16:00:18,177 INFO L140 encePairwiseOnDemand]: 138/145 looper letters, 301 selfloop transitions, 63 changer transitions 20/384 dead transitions. [2023-11-17 16:00:18,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 384 transitions, 4935 flow [2023-11-17 16:00:18,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-17 16:00:18,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-17 16:00:18,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1149 transitions. [2023-11-17 16:00:18,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41705989110707803 [2023-11-17 16:00:18,179 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1149 transitions. [2023-11-17 16:00:18,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1149 transitions. [2023-11-17 16:00:18,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:18,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1149 transitions. [2023-11-17 16:00:18,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 60.473684210526315) internal successors, (1149), 19 states have internal predecessors, (1149), 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) [2023-11-17 16:00:18,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 145.0) internal successors, (2900), 20 states have internal predecessors, (2900), 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) [2023-11-17 16:00:18,182 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 145.0) internal successors, (2900), 20 states have internal predecessors, (2900), 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) [2023-11-17 16:00:18,182 INFO L175 Difference]: Start difference. First operand has 306 places, 332 transitions, 3979 flow. Second operand 19 states and 1149 transitions. [2023-11-17 16:00:18,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 384 transitions, 4935 flow [2023-11-17 16:00:18,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 384 transitions, 4756 flow, removed 45 selfloop flow, removed 13 redundant places. [2023-11-17 16:00:18,324 INFO L231 Difference]: Finished difference. Result has 311 places, 330 transitions, 3928 flow [2023-11-17 16:00:18,324 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=3804, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3928, PETRI_PLACES=311, PETRI_TRANSITIONS=330} [2023-11-17 16:00:18,325 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 291 predicate places. [2023-11-17 16:00:18,325 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 330 transitions, 3928 flow [2023-11-17 16:00:18,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 57.625) internal successors, (922), 16 states have internal predecessors, (922), 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) [2023-11-17 16:00:18,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:18,325 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:18,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2023-11-17 16:00:18,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-17 16:00:18,530 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:00:18,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:18,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1362090394, now seen corresponding path program 6 times [2023-11-17 16:00:18,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:18,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585078855] [2023-11-17 16:00:18,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:18,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:18,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:18,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:18,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585078855] [2023-11-17 16:00:18,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585078855] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:18,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309891413] [2023-11-17 16:00:18,672 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:00:18,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:18,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:18,673 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:00:18,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2023-11-17 16:00:18,859 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 16:00:18,859 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:00:18,860 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-17 16:00:18,861 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:18,931 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:18,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:00:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:00:19,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309891413] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:00:19,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:00:19,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 13 [2023-11-17 16:00:19,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327002792] [2023-11-17 16:00:19,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:00:19,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 16:00:19,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:19,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 16:00:19,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2023-11-17 16:00:19,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 145 [2023-11-17 16:00:19,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 330 transitions, 3928 flow. Second operand has 15 states, 15 states have (on average 63.6) internal successors, (954), 15 states have internal predecessors, (954), 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) [2023-11-17 16:00:19,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:19,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 145 [2023-11-17 16:00:19,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:20,265 INFO L124 PetriNetUnfolderBase]: 707/1382 cut-off events. [2023-11-17 16:00:20,265 INFO L125 PetriNetUnfolderBase]: For 24980/24980 co-relation queries the response was YES. [2023-11-17 16:00:20,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9489 conditions, 1382 events. 707/1382 cut-off events. For 24980/24980 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 8402 event pairs, 48 based on Foata normal form. 5/1365 useless extension candidates. Maximal degree in co-relation 9321. Up to 1100 conditions per place. [2023-11-17 16:00:20,276 INFO L140 encePairwiseOnDemand]: 139/145 looper letters, 288 selfloop transitions, 47 changer transitions 41/376 dead transitions. [2023-11-17 16:00:20,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 376 transitions, 4956 flow [2023-11-17 16:00:20,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 16:00:20,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 16:00:20,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1000 transitions. [2023-11-17 16:00:20,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45977011494252873 [2023-11-17 16:00:20,280 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1000 transitions. [2023-11-17 16:00:20,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1000 transitions. [2023-11-17 16:00:20,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:20,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1000 transitions. [2023-11-17 16:00:20,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 66.66666666666667) internal successors, (1000), 15 states have internal predecessors, (1000), 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) [2023-11-17 16:00:20,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 145.0) internal successors, (2320), 16 states have internal predecessors, (2320), 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) [2023-11-17 16:00:20,283 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 145.0) internal successors, (2320), 16 states have internal predecessors, (2320), 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) [2023-11-17 16:00:20,283 INFO L175 Difference]: Start difference. First operand has 311 places, 330 transitions, 3928 flow. Second operand 15 states and 1000 transitions. [2023-11-17 16:00:20,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 376 transitions, 4956 flow [2023-11-17 16:00:20,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 376 transitions, 4834 flow, removed 14 selfloop flow, removed 14 redundant places. [2023-11-17 16:00:20,416 INFO L231 Difference]: Finished difference. Result has 312 places, 312 transitions, 3752 flow [2023-11-17 16:00:20,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=3814, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3752, PETRI_PLACES=312, PETRI_TRANSITIONS=312} [2023-11-17 16:00:20,417 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 292 predicate places. [2023-11-17 16:00:20,417 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 312 transitions, 3752 flow [2023-11-17 16:00:20,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 63.6) internal successors, (954), 15 states have internal predecessors, (954), 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) [2023-11-17 16:00:20,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:20,418 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:20,422 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2023-11-17 16:00:20,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-17 16:00:20,621 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:00:20,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:20,621 INFO L85 PathProgramCache]: Analyzing trace with hash -897885870, now seen corresponding path program 19 times [2023-11-17 16:00:20,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:20,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681351819] [2023-11-17 16:00:20,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:20,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:21,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:21,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:21,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681351819] [2023-11-17 16:00:21,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681351819] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:21,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939032956] [2023-11-17 16:00:21,050 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:00:21,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:21,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:21,053 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:00:21,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2023-11-17 16:00:21,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:21,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 16:00:21,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:21,421 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:21,421 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:00:22,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:22,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939032956] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:00:22,276 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:00:22,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-11-17 16:00:22,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790151427] [2023-11-17 16:00:22,277 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:00:22,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 16:00:22,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:22,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 16:00:22,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2023-11-17 16:00:22,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 16:00:22,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 312 transitions, 3752 flow. Second operand has 20 states, 20 states have (on average 54.85) internal successors, (1097), 20 states have internal predecessors, (1097), 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) [2023-11-17 16:00:22,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:22,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 16:00:22,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:24,536 INFO L124 PetriNetUnfolderBase]: 711/1364 cut-off events. [2023-11-17 16:00:24,537 INFO L125 PetriNetUnfolderBase]: For 26978/26978 co-relation queries the response was YES. [2023-11-17 16:00:24,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9707 conditions, 1364 events. 711/1364 cut-off events. For 26978/26978 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 8103 event pairs, 61 based on Foata normal form. 3/1349 useless extension candidates. Maximal degree in co-relation 9538. Up to 1118 conditions per place. [2023-11-17 16:00:24,549 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 287 selfloop transitions, 83 changer transitions 15/385 dead transitions. [2023-11-17 16:00:24,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 385 transitions, 5072 flow [2023-11-17 16:00:24,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-17 16:00:24,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-17 16:00:24,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1391 transitions. [2023-11-17 16:00:24,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3997126436781609 [2023-11-17 16:00:24,551 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1391 transitions. [2023-11-17 16:00:24,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1391 transitions. [2023-11-17 16:00:24,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:24,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1391 transitions. [2023-11-17 16:00:24,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 57.958333333333336) internal successors, (1391), 24 states have internal predecessors, (1391), 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) [2023-11-17 16:00:24,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 145.0) internal successors, (3625), 25 states have internal predecessors, (3625), 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) [2023-11-17 16:00:24,556 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 145.0) internal successors, (3625), 25 states have internal predecessors, (3625), 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) [2023-11-17 16:00:24,556 INFO L175 Difference]: Start difference. First operand has 312 places, 312 transitions, 3752 flow. Second operand 24 states and 1391 transitions. [2023-11-17 16:00:24,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 385 transitions, 5072 flow [2023-11-17 16:00:24,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 385 transitions, 4844 flow, removed 89 selfloop flow, removed 16 redundant places. [2023-11-17 16:00:24,713 INFO L231 Difference]: Finished difference. Result has 311 places, 330 transitions, 4049 flow [2023-11-17 16:00:24,713 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=3584, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=4049, PETRI_PLACES=311, PETRI_TRANSITIONS=330} [2023-11-17 16:00:24,714 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 291 predicate places. [2023-11-17 16:00:24,714 INFO L495 AbstractCegarLoop]: Abstraction has has 311 places, 330 transitions, 4049 flow [2023-11-17 16:00:24,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 54.85) internal successors, (1097), 20 states have internal predecessors, (1097), 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) [2023-11-17 16:00:24,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:24,714 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:24,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2023-11-17 16:00:24,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:24,915 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:00:24,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:24,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1314183650, now seen corresponding path program 20 times [2023-11-17 16:00:24,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:24,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740828895] [2023-11-17 16:00:24,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:24,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:25,414 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:25,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:25,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740828895] [2023-11-17 16:00:25,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740828895] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:25,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995832682] [2023-11-17 16:00:25,415 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:00:25,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:25,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:25,418 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:00:25,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2023-11-17 16:00:25,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:00:25,619 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:00:25,620 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 16:00:25,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:25,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:25,796 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:00:26,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:26,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995832682] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:00:26,574 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:00:26,574 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-11-17 16:00:26,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654558885] [2023-11-17 16:00:26,575 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:00:26,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 16:00:26,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:26,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 16:00:26,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-17 16:00:26,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 16:00:26,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 330 transitions, 4049 flow. Second operand has 20 states, 20 states have (on average 54.8) internal successors, (1096), 20 states have internal predecessors, (1096), 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) [2023-11-17 16:00:26,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:26,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 16:00:26,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:29,625 INFO L124 PetriNetUnfolderBase]: 730/1394 cut-off events. [2023-11-17 16:00:29,625 INFO L125 PetriNetUnfolderBase]: For 32374/32374 co-relation queries the response was YES. [2023-11-17 16:00:29,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10421 conditions, 1394 events. 730/1394 cut-off events. For 32374/32374 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 8260 event pairs, 78 based on Foata normal form. 2/1378 useless extension candidates. Maximal degree in co-relation 10306. Up to 1184 conditions per place. [2023-11-17 16:00:29,637 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 276 selfloop transitions, 102 changer transitions 8/386 dead transitions. [2023-11-17 16:00:29,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 386 transitions, 5708 flow [2023-11-17 16:00:29,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 16:00:29,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 16:00:29,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1497 transitions. [2023-11-17 16:00:29,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3970822281167109 [2023-11-17 16:00:29,645 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1497 transitions. [2023-11-17 16:00:29,646 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1497 transitions. [2023-11-17 16:00:29,646 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:29,646 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1497 transitions. [2023-11-17 16:00:29,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 57.57692307692308) internal successors, (1497), 26 states have internal predecessors, (1497), 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) [2023-11-17 16:00:29,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 145.0) internal successors, (3915), 27 states have internal predecessors, (3915), 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) [2023-11-17 16:00:29,650 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 145.0) internal successors, (3915), 27 states have internal predecessors, (3915), 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) [2023-11-17 16:00:29,651 INFO L175 Difference]: Start difference. First operand has 311 places, 330 transitions, 4049 flow. Second operand 26 states and 1497 transitions. [2023-11-17 16:00:29,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 386 transitions, 5708 flow [2023-11-17 16:00:29,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 386 transitions, 5533 flow, removed 59 selfloop flow, removed 14 redundant places. [2023-11-17 16:00:29,802 INFO L231 Difference]: Finished difference. Result has 323 places, 343 transitions, 4683 flow [2023-11-17 16:00:29,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=3886, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=4683, PETRI_PLACES=323, PETRI_TRANSITIONS=343} [2023-11-17 16:00:29,802 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 303 predicate places. [2023-11-17 16:00:29,802 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 343 transitions, 4683 flow [2023-11-17 16:00:29,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 54.8) internal successors, (1096), 20 states have internal predecessors, (1096), 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) [2023-11-17 16:00:29,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:29,803 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:29,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2023-11-17 16:00:30,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2023-11-17 16:00:30,004 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:00:30,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:30,004 INFO L85 PathProgramCache]: Analyzing trace with hash 441779362, now seen corresponding path program 21 times [2023-11-17 16:00:30,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:30,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018922480] [2023-11-17 16:00:30,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:30,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:30,631 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:30,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:30,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018922480] [2023-11-17 16:00:30,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018922480] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:30,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074984692] [2023-11-17 16:00:30,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:00:30,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:30,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:30,633 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:00:30,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2023-11-17 16:00:30,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 16:00:30,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:00:30,724 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 16:00:30,725 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:30,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:30,920 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:00:31,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:31,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074984692] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:00:31,537 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:00:31,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2023-11-17 16:00:31,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715141262] [2023-11-17 16:00:31,537 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:00:31,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 16:00:31,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:00:31,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 16:00:31,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2023-11-17 16:00:31,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 16:00:31,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 343 transitions, 4683 flow. Second operand has 22 states, 22 states have (on average 54.81818181818182) internal successors, (1206), 22 states have internal predecessors, (1206), 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) [2023-11-17 16:00:31,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:00:31,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 16:00:31,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:00:33,813 INFO L124 PetriNetUnfolderBase]: 744/1422 cut-off events. [2023-11-17 16:00:33,813 INFO L125 PetriNetUnfolderBase]: For 35771/35771 co-relation queries the response was YES. [2023-11-17 16:00:33,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10870 conditions, 1422 events. 744/1422 cut-off events. For 35771/35771 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 8531 event pairs, 40 based on Foata normal form. 4/1408 useless extension candidates. Maximal degree in co-relation 10709. Up to 1069 conditions per place. [2023-11-17 16:00:33,824 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 290 selfloop transitions, 113 changer transitions 16/419 dead transitions. [2023-11-17 16:00:33,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 419 transitions, 5981 flow [2023-11-17 16:00:33,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-17 16:00:33,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2023-11-17 16:00:33,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 1626 transitions. [2023-11-17 16:00:33,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4004926108374384 [2023-11-17 16:00:33,827 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 1626 transitions. [2023-11-17 16:00:33,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 1626 transitions. [2023-11-17 16:00:33,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:00:33,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 1626 transitions. [2023-11-17 16:00:33,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 58.07142857142857) internal successors, (1626), 28 states have internal predecessors, (1626), 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) [2023-11-17 16:00:33,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 145.0) internal successors, (4205), 29 states have internal predecessors, (4205), 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) [2023-11-17 16:00:33,833 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 145.0) internal successors, (4205), 29 states have internal predecessors, (4205), 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) [2023-11-17 16:00:33,833 INFO L175 Difference]: Start difference. First operand has 323 places, 343 transitions, 4683 flow. Second operand 28 states and 1626 transitions. [2023-11-17 16:00:33,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 419 transitions, 5981 flow [2023-11-17 16:00:34,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 419 transitions, 5484 flow, removed 206 selfloop flow, removed 19 redundant places. [2023-11-17 16:00:34,020 INFO L231 Difference]: Finished difference. Result has 333 places, 347 transitions, 4552 flow [2023-11-17 16:00:34,020 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=4185, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=4552, PETRI_PLACES=333, PETRI_TRANSITIONS=347} [2023-11-17 16:00:34,020 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 313 predicate places. [2023-11-17 16:00:34,021 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 347 transitions, 4552 flow [2023-11-17 16:00:34,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 54.81818181818182) internal successors, (1206), 22 states have internal predecessors, (1206), 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) [2023-11-17 16:00:34,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:00:34,021 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:00:34,026 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2023-11-17 16:00:34,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:34,226 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:00:34,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:00:34,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1171407824, now seen corresponding path program 5 times [2023-11-17 16:00:34,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:00:34,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56616428] [2023-11-17 16:00:34,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:00:34,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:00:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:00:34,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:34,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:00:34,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56616428] [2023-11-17 16:00:34,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56616428] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:00:34,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680163476] [2023-11-17 16:00:34,421 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:00:34,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:00:34,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:00:34,425 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:00:34,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2023-11-17 16:00:34,521 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 16:00:34,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:00:34,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-17 16:00:34,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:00:36,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:00:36,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:00:41,259 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (mod c_~x_1~0 4294967296))) (let ((.cse1 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse6 (+ .cse3 4294967296)) (.cse4 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_286 Int) (v_y_286 Int)) (let ((.cse0 (+ (* 2863311531 v_z_286) (* v_y_286 4294967296))) (.cse2 (+ .cse4 v_z_286))) (or (< v_z_286 0) (< .cse0 0) (< .cse1 .cse0) (< 4294967295 .cse2) (= .cse3 .cse2)))) (forall ((v_z_286 Int) (v_y_286 Int)) (let ((.cse5 (+ (* 2863311531 v_z_286) (* v_y_286 4294967296))) (.cse7 (+ .cse4 v_z_286))) (or (< v_z_286 0) (< .cse5 0) (< 4294967295 v_z_286) (< .cse1 .cse5) (= .cse6 .cse7) (= .cse3 .cse7)))) (forall ((v_z_286 Int) (v_y_286 Int)) (let ((.cse9 (+ (* 2863311531 v_z_286) (* v_y_286 4294967296))) (.cse8 (+ .cse4 v_z_286))) (or (< .cse8 4294967296) (< .cse9 0) (< 4294967295 v_z_286) (< .cse1 .cse9) (= .cse6 .cse8))))))) is different from false [2023-11-17 16:00:58,376 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~x_1~0 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_286 Int) (v_y_286 Int)) (let ((.cse0 (+ .cse2 v_z_286))) (or (< v_z_286 0) (not (= (+ (* 2863311531 v_z_286) (* v_y_286 4294967296)) 0)) (< 4294967295 .cse0) (= .cse1 .cse0)))) (forall ((v_z_286 Int) (v_y_286 Int)) (let ((.cse3 (+ .cse2 v_z_286))) (or (< v_z_286 0) (not (= (+ (* 2863311531 v_z_286) (* v_y_286 4294967296)) 0)) (< 4294967295 v_z_286) (= (+ .cse1 4294967296) .cse3) (= .cse1 .cse3)))))) is different from false [2023-11-17 16:01:16,712 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~x_1~0 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_286 Int) (v_y_286 Int)) (let ((.cse0 (+ .cse2 v_z_286))) (or (< v_z_286 0) (not (= (+ (* 2863311531 v_z_286) (* v_y_286 4294967296)) 0)) (< 4294967295 .cse0) (= .cse1 .cse0)))) (forall ((v_z_286 Int) (v_y_286 Int)) (or (< v_z_286 0) (not (= (+ (* 2863311531 v_z_286) (* v_y_286 4294967296)) 0)) (< 4294967295 v_z_286) (= .cse1 (+ .cse2 v_z_286)))))) is different from false [2023-11-17 16:01:22,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-11-17 16:01:22,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680163476] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:01:22,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:01:22,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 15 [2023-11-17 16:01:22,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90860000] [2023-11-17 16:01:22,979 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:01:22,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 16:01:22,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:22,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 16:01:22,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=130, Unknown=4, NotChecked=78, Total=272 [2023-11-17 16:01:22,981 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 145 [2023-11-17 16:01:22,981 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 347 transitions, 4552 flow. Second operand has 17 states, 17 states have (on average 63.294117647058826) internal successors, (1076), 17 states have internal predecessors, (1076), 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) [2023-11-17 16:01:22,981 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:22,981 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 145 [2023-11-17 16:01:22,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:01:25,002 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~x_1~0 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_286 Int) (v_y_286 Int)) (let ((.cse0 (+ .cse2 v_z_286))) (or (< v_z_286 0) (not (= (+ (* 2863311531 v_z_286) (* v_y_286 4294967296)) 0)) (< 4294967295 .cse0) (= .cse1 .cse0)))) (forall ((v_z_286 Int) (v_y_286 Int)) (or (< v_z_286 0) (not (= (+ (* 2863311531 v_z_286) (* v_y_286 4294967296)) 0)) (< 4294967295 v_z_286) (= .cse1 (+ .cse2 v_z_286)))) (= c_~x_2~0 0) (= c_~x_1~0 0))) is different from false [2023-11-17 16:01:27,035 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~x_1~0 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_286 Int) (v_y_286 Int)) (let ((.cse0 (+ .cse2 v_z_286))) (or (< v_z_286 0) (not (= (+ (* 2863311531 v_z_286) (* v_y_286 4294967296)) 0)) (< 4294967295 .cse0) (= .cse1 .cse0)))) (= c_~x_2~0 0) (forall ((v_z_286 Int) (v_y_286 Int)) (let ((.cse3 (+ .cse2 v_z_286))) (or (< v_z_286 0) (not (= (+ (* 2863311531 v_z_286) (* v_y_286 4294967296)) 0)) (< 4294967295 v_z_286) (= (+ .cse1 4294967296) .cse3) (= .cse1 .cse3)))) (= c_~x_1~0 0))) is different from false [2023-11-17 16:01:29,088 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (mod c_~x_1~0 4294967296))) (let ((.cse1 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse6 (+ .cse3 4294967296)) (.cse4 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_286 Int) (v_y_286 Int)) (let ((.cse0 (+ (* 2863311531 v_z_286) (* v_y_286 4294967296))) (.cse2 (+ .cse4 v_z_286))) (or (< v_z_286 0) (< .cse0 0) (< .cse1 .cse0) (< 4294967295 .cse2) (= .cse3 .cse2)))) (= c_~x_2~0 0) (forall ((v_z_286 Int) (v_y_286 Int)) (let ((.cse5 (+ (* 2863311531 v_z_286) (* v_y_286 4294967296))) (.cse7 (+ .cse4 v_z_286))) (or (< v_z_286 0) (< .cse5 0) (< 4294967295 v_z_286) (< .cse1 .cse5) (= .cse6 .cse7) (= .cse3 .cse7)))) (= c_thread1Thread1of1ForFork0_~i~0 0) (= c_~x_1~0 0) (forall ((v_z_286 Int) (v_y_286 Int)) (let ((.cse9 (+ (* 2863311531 v_z_286) (* v_y_286 4294967296))) (.cse8 (+ .cse4 v_z_286))) (or (< .cse8 4294967296) (< .cse9 0) (< 4294967295 v_z_286) (< .cse1 .cse9) (= .cse6 .cse8))))))) is different from false [2023-11-17 16:01:29,981 INFO L124 PetriNetUnfolderBase]: 790/1505 cut-off events. [2023-11-17 16:01:29,981 INFO L125 PetriNetUnfolderBase]: For 40702/40702 co-relation queries the response was YES. [2023-11-17 16:01:29,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12188 conditions, 1505 events. 790/1505 cut-off events. For 40702/40702 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 9064 event pairs, 157 based on Foata normal form. 2/1489 useless extension candidates. Maximal degree in co-relation 12015. Up to 1375 conditions per place. [2023-11-17 16:01:29,995 INFO L140 encePairwiseOnDemand]: 136/145 looper letters, 372 selfloop transitions, 30 changer transitions 4/406 dead transitions. [2023-11-17 16:01:29,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 406 transitions, 6536 flow [2023-11-17 16:01:29,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 16:01:29,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 16:01:29,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 866 transitions. [2023-11-17 16:01:29,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45941644562334216 [2023-11-17 16:01:29,997 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 866 transitions. [2023-11-17 16:01:29,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 866 transitions. [2023-11-17 16:01:29,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:01:29,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 866 transitions. [2023-11-17 16:01:29,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 66.61538461538461) internal successors, (866), 13 states have internal predecessors, (866), 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) [2023-11-17 16:01:29,999 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 145.0) internal successors, (2030), 14 states have internal predecessors, (2030), 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) [2023-11-17 16:01:29,999 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 145.0) internal successors, (2030), 14 states have internal predecessors, (2030), 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) [2023-11-17 16:01:30,000 INFO L175 Difference]: Start difference. First operand has 333 places, 347 transitions, 4552 flow. Second operand 13 states and 866 transitions. [2023-11-17 16:01:30,000 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 406 transitions, 6536 flow [2023-11-17 16:01:30,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 406 transitions, 6176 flow, removed 77 selfloop flow, removed 24 redundant places. [2023-11-17 16:01:30,186 INFO L231 Difference]: Finished difference. Result has 325 places, 374 transitions, 5077 flow [2023-11-17 16:01:30,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=4263, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5077, PETRI_PLACES=325, PETRI_TRANSITIONS=374} [2023-11-17 16:01:30,186 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 305 predicate places. [2023-11-17 16:01:30,187 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 374 transitions, 5077 flow [2023-11-17 16:01:30,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 63.294117647058826) internal successors, (1076), 17 states have internal predecessors, (1076), 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) [2023-11-17 16:01:30,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:01:30,187 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:01:30,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2023-11-17 16:01:30,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:01:30,388 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:01:30,388 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:01:30,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1540807808, now seen corresponding path program 6 times [2023-11-17 16:01:30,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:01:30,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570226624] [2023-11-17 16:01:30,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:01:30,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:01:30,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:01:30,560 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:30,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:01:30,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570226624] [2023-11-17 16:01:30,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570226624] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:01:30,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487390052] [2023-11-17 16:01:30,561 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:01:30,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:01:30,561 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:01:30,565 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:01:30,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2023-11-17 16:01:30,661 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 16:01:30,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:01:30,662 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:01:30,663 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:01:32,777 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:01:32,777 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:01:35,036 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (mod c_~x_1~0 4294967296))) (let ((.cse1 (+ .cse4 4294967296)) (.cse3 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse5 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_289 Int) (v_y_289 Int)) (let ((.cse0 (+ (* v_y_289 4294967296) (* 2863311531 v_z_289))) (.cse2 (+ .cse5 v_z_289))) (or (< .cse0 0) (= .cse1 .cse2) (< .cse3 .cse0) (= .cse4 .cse2) (< 4294967295 v_z_289) (< v_z_289 0)))) (forall ((v_z_289 Int) (v_y_289 Int)) (let ((.cse7 (+ .cse5 v_z_289)) (.cse6 (+ (* v_y_289 4294967296) (* 2863311531 v_z_289)))) (or (< .cse6 0) (= .cse1 .cse7) (< .cse7 4294967296) (< .cse3 .cse6) (< 4294967295 v_z_289)))) (forall ((v_z_289 Int) (v_y_289 Int)) (let ((.cse8 (+ (* v_y_289 4294967296) (* 2863311531 v_z_289))) (.cse9 (+ .cse5 v_z_289))) (or (< .cse8 0) (< 4294967295 .cse9) (< .cse3 .cse8) (= .cse4 .cse9) (< v_z_289 0))))))) is different from false [2023-11-17 16:01:50,022 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~x_1~0 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_289 Int) (v_y_289 Int)) (let ((.cse0 (+ .cse2 v_z_289))) (or (not (= (+ (* v_y_289 4294967296) (* 2863311531 v_z_289)) 0)) (< 4294967295 .cse0) (= .cse1 .cse0) (< v_z_289 0)))) (forall ((v_z_289 Int) (v_y_289 Int)) (or (not (= (+ (* v_y_289 4294967296) (* 2863311531 v_z_289)) 0)) (= .cse1 (+ .cse2 v_z_289)) (< 4294967295 v_z_289) (< v_z_289 0))))) is different from false [2023-11-17 16:01:54,147 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-11-17 16:01:54,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487390052] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:01:54,147 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:01:54,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-11-17 16:01:54,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802422818] [2023-11-17 16:01:54,148 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:01:54,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 16:01:54,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:01:54,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 16:01:54,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=157, Unknown=3, NotChecked=54, Total=272 [2023-11-17 16:01:54,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 145 [2023-11-17 16:01:54,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 374 transitions, 5077 flow. Second operand has 17 states, 17 states have (on average 63.35294117647059) internal successors, (1077), 17 states have internal predecessors, (1077), 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) [2023-11-17 16:01:54,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:01:54,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 145 [2023-11-17 16:01:54,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:01:56,175 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~x_1~0 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_289 Int) (v_y_289 Int)) (let ((.cse0 (+ .cse2 v_z_289))) (or (not (= (+ (* v_y_289 4294967296) (* 2863311531 v_z_289)) 0)) (< 4294967295 .cse0) (= .cse1 .cse0) (< v_z_289 0)))) (= c_~x_2~0 0) (forall ((v_z_289 Int) (v_y_289 Int)) (or (not (= (+ (* v_y_289 4294967296) (* 2863311531 v_z_289)) 0)) (= .cse1 (+ .cse2 v_z_289)) (< 4294967295 v_z_289) (< v_z_289 0))) (= c_~x_1~0 0))) is different from false [2023-11-17 16:01:58,196 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (mod c_~x_1~0 4294967296))) (let ((.cse1 (+ .cse4 4294967296)) (.cse3 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse5 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_289 Int) (v_y_289 Int)) (let ((.cse0 (+ (* v_y_289 4294967296) (* 2863311531 v_z_289))) (.cse2 (+ .cse5 v_z_289))) (or (< .cse0 0) (= .cse1 .cse2) (< .cse3 .cse0) (= .cse4 .cse2) (< 4294967295 v_z_289) (< v_z_289 0)))) (= c_~x_2~0 0) (forall ((v_z_289 Int) (v_y_289 Int)) (let ((.cse7 (+ .cse5 v_z_289)) (.cse6 (+ (* v_y_289 4294967296) (* 2863311531 v_z_289)))) (or (< .cse6 0) (= .cse1 .cse7) (< .cse7 4294967296) (< .cse3 .cse6) (< 4294967295 v_z_289)))) (= c_thread1Thread1of1ForFork0_~i~0 0) (forall ((v_z_289 Int) (v_y_289 Int)) (let ((.cse8 (+ (* v_y_289 4294967296) (* 2863311531 v_z_289))) (.cse9 (+ .cse5 v_z_289))) (or (< .cse8 0) (< 4294967295 .cse9) (< .cse3 .cse8) (= .cse4 .cse9) (< v_z_289 0)))) (= c_~x_1~0 0)))) is different from false [2023-11-17 16:01:59,090 INFO L124 PetriNetUnfolderBase]: 843/1614 cut-off events. [2023-11-17 16:01:59,090 INFO L125 PetriNetUnfolderBase]: For 47429/47429 co-relation queries the response was YES. [2023-11-17 16:01:59,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13602 conditions, 1614 events. 843/1614 cut-off events. For 47429/47429 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9955 event pairs, 328 based on Foata normal form. 3/1599 useless extension candidates. Maximal degree in co-relation 13424. Up to 1520 conditions per place. [2023-11-17 16:01:59,108 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 388 selfloop transitions, 18 changer transitions 23/429 dead transitions. [2023-11-17 16:01:59,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 429 transitions, 6765 flow [2023-11-17 16:01:59,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 16:01:59,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 16:01:59,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 864 transitions. [2023-11-17 16:01:59,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583554376657825 [2023-11-17 16:01:59,109 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 864 transitions. [2023-11-17 16:01:59,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 864 transitions. [2023-11-17 16:01:59,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:01:59,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 864 transitions. [2023-11-17 16:01:59,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 66.46153846153847) internal successors, (864), 13 states have internal predecessors, (864), 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) [2023-11-17 16:01:59,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 145.0) internal successors, (2030), 14 states have internal predecessors, (2030), 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) [2023-11-17 16:01:59,111 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 145.0) internal successors, (2030), 14 states have internal predecessors, (2030), 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) [2023-11-17 16:01:59,111 INFO L175 Difference]: Start difference. First operand has 325 places, 374 transitions, 5077 flow. Second operand 13 states and 864 transitions. [2023-11-17 16:01:59,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 429 transitions, 6765 flow [2023-11-17 16:01:59,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 336 places, 429 transitions, 6511 flow, removed 125 selfloop flow, removed 1 redundant places. [2023-11-17 16:01:59,357 INFO L231 Difference]: Finished difference. Result has 346 places, 389 transitions, 5274 flow [2023-11-17 16:01:59,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=4847, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=374, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5274, PETRI_PLACES=346, PETRI_TRANSITIONS=389} [2023-11-17 16:01:59,357 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 326 predicate places. [2023-11-17 16:01:59,357 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 389 transitions, 5274 flow [2023-11-17 16:01:59,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 63.35294117647059) internal successors, (1077), 17 states have internal predecessors, (1077), 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) [2023-11-17 16:01:59,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:01:59,358 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:01:59,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2023-11-17 16:01:59,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2023-11-17 16:01:59,564 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:01:59,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:01:59,565 INFO L85 PathProgramCache]: Analyzing trace with hash -849901354, now seen corresponding path program 22 times [2023-11-17 16:01:59,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:01:59,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929283732] [2023-11-17 16:01:59,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:01:59,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:01:59,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:00,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:00,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:00,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929283732] [2023-11-17 16:02:00,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929283732] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:02:00,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716067070] [2023-11-17 16:02:00,106 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:02:00,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:02:00,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:02:00,107 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:02:00,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2023-11-17 16:02:00,303 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:02:00,303 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:02:00,304 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 16:02:00,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:02:00,512 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:00,512 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:02:03,089 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (mod (+ c_thread2Thread1of1ForFork1_~i~1 1) 4294967296)) (.cse0 (mod (+ c_thread1Thread1of1ForFork0_~i~0 1) 4294967296)) (.cse5 (mod (+ 2 c_thread2Thread1of1ForFork1_~i~1) 4294967296)) (.cse2 (* 4294967296 (div c_~x_1~0 4294967296))) (.cse6 (+ (mod c_thread1Thread1of1ForFork0_~i~0 4294967296) 1))) (and (forall ((v_z_294 Int)) (let ((.cse1 (* 2 v_z_294))) (let ((.cse3 (* (div (+ .cse1 c_~x_2~0) 4294967296) 4294967296))) (or (< .cse0 v_z_294) (< (+ .cse1 c_~x_2~0 4294967294 .cse2) (+ .cse3 .cse4 c_~x_1~0)) (< (+ .cse3 c_~x_1~0 .cse5) (+ .cse1 c_~x_2~0 .cse2 1)) (< v_z_294 .cse6))))) (forall ((v_z_294 Int)) (or (< .cse0 v_z_294) (let ((.cse7 (* 2 v_z_294))) (< (+ .cse7 c_~x_2~0 .cse2) (+ (* (div (+ .cse7 c_~x_2~0) 4294967296) 4294967296) .cse4 c_~x_1~0 2))) (< v_z_294 .cse6))) (forall ((v_z_294 Int)) (or (< .cse0 v_z_294) (let ((.cse8 (* 2 v_z_294))) (< (+ (* (div (+ .cse8 c_~x_2~0) 4294967296) 4294967296) c_~x_1~0 .cse5) (+ .cse8 c_~x_2~0 4294967297 .cse2))) (< v_z_294 .cse6))))) is different from false [2023-11-17 16:02:05,152 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (mod (+ c_thread1Thread1of1ForFork0_~i~0 1) 4294967296)) (.cse2 (* 4294967296 (div c_~x_1~0 4294967296))) (.cse4 (+ (mod c_thread1Thread1of1ForFork0_~i~0 4294967296) 1))) (and (forall ((v_z_294 Int)) (let ((.cse1 (* 2 v_z_294))) (let ((.cse0 (* (div (+ .cse1 c_~x_2~0) 4294967296) 4294967296))) (or (< (+ .cse0 c_~x_1~0 1) (+ .cse1 c_~x_2~0 .cse2)) (< .cse3 v_z_294) (< (+ .cse1 c_~x_2~0 .cse2 4294967293) (+ .cse0 c_~x_1~0)) (< v_z_294 .cse4))))) (forall ((v_z_294 Int)) (or (< .cse3 v_z_294) (< v_z_294 .cse4) (let ((.cse5 (* 2 v_z_294))) (< (+ (* (div (+ .cse5 c_~x_2~0) 4294967296) 4294967296) c_~x_1~0) (+ .cse5 c_~x_2~0 4294967295 .cse2))))) (forall ((v_z_294 Int)) (or (< .cse3 v_z_294) (let ((.cse6 (* 2 v_z_294))) (< (+ .cse6 c_~x_2~0 .cse2) (+ (* (div (+ .cse6 c_~x_2~0) 4294967296) 4294967296) c_~x_1~0 3))) (< v_z_294 .cse4))))) is different from false [2023-11-17 16:02:05,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2023-11-17 16:02:05,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716067070] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:02:05,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:02:05,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-11-17 16:02:05,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231077063] [2023-11-17 16:02:05,235 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:02:05,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 16:02:05,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:05,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 16:02:05,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=245, Unknown=2, NotChecked=66, Total=380 [2023-11-17 16:02:05,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 16:02:05,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 389 transitions, 5274 flow. Second operand has 20 states, 20 states have (on average 54.95) internal successors, (1099), 20 states have internal predecessors, (1099), 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) [2023-11-17 16:02:05,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:05,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 16:02:05,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:06,893 INFO L124 PetriNetUnfolderBase]: 847/1619 cut-off events. [2023-11-17 16:02:06,894 INFO L125 PetriNetUnfolderBase]: For 44924/44924 co-relation queries the response was YES. [2023-11-17 16:02:06,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13254 conditions, 1619 events. 847/1619 cut-off events. For 44924/44924 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 9968 event pairs, 160 based on Foata normal form. 2/1603 useless extension candidates. Maximal degree in co-relation 13065. Up to 1416 conditions per place. [2023-11-17 16:02:06,912 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 346 selfloop transitions, 81 changer transitions 10/437 dead transitions. [2023-11-17 16:02:06,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 437 transitions, 6579 flow [2023-11-17 16:02:06,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-17 16:02:06,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-17 16:02:06,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1154 transitions. [2023-11-17 16:02:06,913 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3979310344827586 [2023-11-17 16:02:06,913 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1154 transitions. [2023-11-17 16:02:06,914 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1154 transitions. [2023-11-17 16:02:06,914 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:06,914 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1154 transitions. [2023-11-17 16:02:06,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 57.7) internal successors, (1154), 20 states have internal predecessors, (1154), 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) [2023-11-17 16:02:06,916 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 145.0) internal successors, (3045), 21 states have internal predecessors, (3045), 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) [2023-11-17 16:02:06,916 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 145.0) internal successors, (3045), 21 states have internal predecessors, (3045), 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) [2023-11-17 16:02:06,916 INFO L175 Difference]: Start difference. First operand has 346 places, 389 transitions, 5274 flow. Second operand 20 states and 1154 transitions. [2023-11-17 16:02:06,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 437 transitions, 6579 flow [2023-11-17 16:02:07,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 437 transitions, 6534 flow, removed 15 selfloop flow, removed 6 redundant places. [2023-11-17 16:02:07,170 INFO L231 Difference]: Finished difference. Result has 361 places, 397 transitions, 5627 flow [2023-11-17 16:02:07,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=5229, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5627, PETRI_PLACES=361, PETRI_TRANSITIONS=397} [2023-11-17 16:02:07,171 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 341 predicate places. [2023-11-17 16:02:07,171 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 397 transitions, 5627 flow [2023-11-17 16:02:07,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 54.95) internal successors, (1099), 20 states have internal predecessors, (1099), 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) [2023-11-17 16:02:07,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:07,171 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:07,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2023-11-17 16:02:07,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2023-11-17 16:02:07,377 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:02:07,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:07,378 INFO L85 PathProgramCache]: Analyzing trace with hash 233580280, now seen corresponding path program 7 times [2023-11-17 16:02:07,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:07,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17420060] [2023-11-17 16:02:07,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:07,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:07,593 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:07,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:07,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17420060] [2023-11-17 16:02:07,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17420060] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:02:07,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124981019] [2023-11-17 16:02:07,593 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:02:07,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:02:07,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:02:07,597 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:02:07,620 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2023-11-17 16:02:07,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:07,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-17 16:02:07,706 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:02:09,886 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:09,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:02:18,260 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (mod c_~x_1~0 4294967296))) (let ((.cse1 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse7 (+ .cse3 4294967296)) (.cse4 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_299 Int) (v_y_299 Int)) (let ((.cse0 (+ .cse4 v_z_299)) (.cse2 (+ (* 2863311531 v_z_299) (* v_y_299 4294967296)))) (or (< 4294967295 .cse0) (< .cse1 .cse2) (= .cse3 .cse0) (< .cse2 0) (< v_z_299 0)))) (forall ((v_z_299 Int) (v_y_299 Int)) (let ((.cse5 (+ (* 2863311531 v_z_299) (* v_y_299 4294967296))) (.cse6 (+ .cse4 v_z_299))) (or (< .cse1 .cse5) (= .cse3 .cse6) (< .cse5 0) (= .cse7 .cse6) (< v_z_299 0) (< 4294967295 v_z_299)))) (forall ((v_z_299 Int) (v_y_299 Int)) (let ((.cse8 (+ (* 2863311531 v_z_299) (* v_y_299 4294967296))) (.cse9 (+ .cse4 v_z_299))) (or (< .cse1 .cse8) (< .cse9 4294967296) (< .cse8 0) (= .cse7 .cse9) (< 4294967295 v_z_299))))))) is different from false [2023-11-17 16:02:33,356 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~x_1~0 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_299 Int) (v_y_299 Int)) (let ((.cse0 (+ .cse2 v_z_299))) (or (< .cse0 4294967296) (= (+ .cse1 4294967296) .cse0) (not (= (+ (* 2863311531 v_z_299) (* v_y_299 4294967296)) 0)) (< 4294967295 v_z_299)))) (forall ((v_z_299 Int) (v_y_299 Int)) (let ((.cse3 (+ .cse2 v_z_299))) (or (< 4294967295 .cse3) (= .cse1 .cse3) (not (= (+ (* 2863311531 v_z_299) (* v_y_299 4294967296)) 0)) (< v_z_299 0)))) (forall ((v_z_299 Int) (v_y_299 Int)) (or (= .cse1 (+ .cse2 v_z_299)) (not (= (+ (* 2863311531 v_z_299) (* v_y_299 4294967296)) 0)) (< v_z_299 0) (< 4294967295 v_z_299))))) is different from false [2023-11-17 16:02:47,590 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:47,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124981019] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:02:47,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:02:47,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 17 [2023-11-17 16:02:47,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858329095] [2023-11-17 16:02:47,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:02:47,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-17 16:02:47,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:47,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-17 16:02:47,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=207, Unknown=6, NotChecked=62, Total=342 [2023-11-17 16:02:47,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 145 [2023-11-17 16:02:47,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 397 transitions, 5627 flow. Second operand has 19 states, 19 states have (on average 57.21052631578947) internal successors, (1087), 19 states have internal predecessors, (1087), 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) [2023-11-17 16:02:47,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:47,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 145 [2023-11-17 16:02:47,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:02:49,633 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~x_1~0 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_299 Int) (v_y_299 Int)) (let ((.cse0 (+ .cse2 v_z_299))) (or (< .cse0 4294967296) (= (+ .cse1 4294967296) .cse0) (not (= (+ (* 2863311531 v_z_299) (* v_y_299 4294967296)) 0)) (< 4294967295 v_z_299)))) (forall ((v_z_299 Int) (v_y_299 Int)) (let ((.cse3 (+ .cse2 v_z_299))) (or (< 4294967295 .cse3) (= .cse1 .cse3) (not (= (+ (* 2863311531 v_z_299) (* v_y_299 4294967296)) 0)) (< v_z_299 0)))) (= c_~x_2~0 0) (forall ((v_z_299 Int) (v_y_299 Int)) (or (= .cse1 (+ .cse2 v_z_299)) (not (= (+ (* 2863311531 v_z_299) (* v_y_299 4294967296)) 0)) (< v_z_299 0) (< 4294967295 v_z_299))) (= c_~x_1~0 0))) is different from false [2023-11-17 16:02:51,679 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse3 (mod c_~x_1~0 4294967296))) (let ((.cse1 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse7 (+ .cse3 4294967296)) (.cse4 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_299 Int) (v_y_299 Int)) (let ((.cse0 (+ .cse4 v_z_299)) (.cse2 (+ (* 2863311531 v_z_299) (* v_y_299 4294967296)))) (or (< 4294967295 .cse0) (< .cse1 .cse2) (= .cse3 .cse0) (< .cse2 0) (< v_z_299 0)))) (forall ((v_z_299 Int) (v_y_299 Int)) (let ((.cse5 (+ (* 2863311531 v_z_299) (* v_y_299 4294967296))) (.cse6 (+ .cse4 v_z_299))) (or (< .cse1 .cse5) (= .cse3 .cse6) (< .cse5 0) (= .cse7 .cse6) (< v_z_299 0) (< 4294967295 v_z_299)))) (forall ((v_z_299 Int) (v_y_299 Int)) (let ((.cse8 (+ (* 2863311531 v_z_299) (* v_y_299 4294967296))) (.cse9 (+ .cse4 v_z_299))) (or (< .cse1 .cse8) (< .cse9 4294967296) (< .cse8 0) (= .cse7 .cse9) (< 4294967295 v_z_299)))) (= c_~x_2~0 0) (= c_thread1Thread1of1ForFork0_~i~0 0) (= c_~x_1~0 0)))) is different from false [2023-11-17 16:02:53,828 WARN L854 $PredicateComparison]: unable to prove that (and (or (< 4294967294 (mod c_thread2Thread1of1ForFork1_~i~1 4294967296)) (let ((.cse3 (mod c_~x_1~0 4294967296))) (let ((.cse1 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse7 (+ .cse3 4294967296)) (.cse4 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_299 Int) (v_y_299 Int)) (let ((.cse0 (+ .cse4 v_z_299)) (.cse2 (+ (* 2863311531 v_z_299) (* v_y_299 4294967296)))) (or (< 4294967295 .cse0) (< .cse1 .cse2) (= .cse3 .cse0) (< .cse2 0) (< v_z_299 0)))) (forall ((v_z_299 Int) (v_y_299 Int)) (let ((.cse5 (+ (* 2863311531 v_z_299) (* v_y_299 4294967296))) (.cse6 (+ .cse4 v_z_299))) (or (< .cse1 .cse5) (= .cse3 .cse6) (< .cse5 0) (= .cse7 .cse6) (< v_z_299 0) (< 4294967295 v_z_299)))) (forall ((v_z_299 Int) (v_y_299 Int)) (let ((.cse8 (+ (* 2863311531 v_z_299) (* v_y_299 4294967296))) (.cse9 (+ .cse4 v_z_299))) (or (< .cse1 .cse8) (< .cse9 4294967296) (< .cse8 0) (= .cse7 .cse9) (< 4294967295 v_z_299)))))))) (= c_~x_2~0 0) (= c_thread1Thread1of1ForFork0_~i~0 0) (= c_thread2Thread1of1ForFork1_~i~1 0) (= c_~x_1~0 0)) is different from false [2023-11-17 16:02:55,168 INFO L124 PetriNetUnfolderBase]: 888/1702 cut-off events. [2023-11-17 16:02:55,168 INFO L125 PetriNetUnfolderBase]: For 50176/50176 co-relation queries the response was YES. [2023-11-17 16:02:55,180 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14699 conditions, 1702 events. 888/1702 cut-off events. For 50176/50176 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10671 event pairs, 352 based on Foata normal form. 3/1687 useless extension candidates. Maximal degree in co-relation 14508. Up to 1608 conditions per place. [2023-11-17 16:02:55,186 INFO L140 encePairwiseOnDemand]: 136/145 looper letters, 407 selfloop transitions, 22 changer transitions 23/452 dead transitions. [2023-11-17 16:02:55,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 452 transitions, 7417 flow [2023-11-17 16:02:55,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 16:02:55,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 16:02:55,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 899 transitions. [2023-11-17 16:02:55,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41333333333333333 [2023-11-17 16:02:55,188 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 899 transitions. [2023-11-17 16:02:55,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 899 transitions. [2023-11-17 16:02:55,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:02:55,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 899 transitions. [2023-11-17 16:02:55,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 59.93333333333333) internal successors, (899), 15 states have internal predecessors, (899), 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) [2023-11-17 16:02:55,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 145.0) internal successors, (2320), 16 states have internal predecessors, (2320), 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) [2023-11-17 16:02:55,191 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 145.0) internal successors, (2320), 16 states have internal predecessors, (2320), 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) [2023-11-17 16:02:55,191 INFO L175 Difference]: Start difference. First operand has 361 places, 397 transitions, 5627 flow. Second operand 15 states and 899 transitions. [2023-11-17 16:02:55,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 452 transitions, 7417 flow [2023-11-17 16:02:55,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 452 transitions, 7244 flow, removed 37 selfloop flow, removed 14 redundant places. [2023-11-17 16:02:55,510 INFO L231 Difference]: Finished difference. Result has 371 places, 414 transitions, 5956 flow [2023-11-17 16:02:55,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=5475, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=397, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=377, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5956, PETRI_PLACES=371, PETRI_TRANSITIONS=414} [2023-11-17 16:02:55,511 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 351 predicate places. [2023-11-17 16:02:55,511 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 414 transitions, 5956 flow [2023-11-17 16:02:55,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 57.21052631578947) internal successors, (1087), 19 states have internal predecessors, (1087), 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) [2023-11-17 16:02:55,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:02:55,512 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:02:55,517 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2023-11-17 16:02:55,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2023-11-17 16:02:55,717 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:02:55,717 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:02:55,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1334065746, now seen corresponding path program 8 times [2023-11-17 16:02:55,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:02:55,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439176600] [2023-11-17 16:02:55,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:02:55,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:02:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:02:55,891 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:55,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:02:55,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439176600] [2023-11-17 16:02:55,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439176600] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:02:55,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076036798] [2023-11-17 16:02:55,892 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:02:55,892 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:02:55,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:02:55,893 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:02:55,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2023-11-17 16:02:55,987 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:02:55,987 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:02:55,988 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:02:55,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:02:57,374 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:57,374 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:02:58,966 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:02:58,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076036798] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:02:58,967 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:02:58,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 5] total 13 [2023-11-17 16:02:58,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830949003] [2023-11-17 16:02:58,967 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:02:58,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 16:02:58,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:02:58,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 16:02:58,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-11-17 16:02:58,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 145 [2023-11-17 16:02:58,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 414 transitions, 5956 flow. Second operand has 15 states, 15 states have (on average 63.6) internal successors, (954), 15 states have internal predecessors, (954), 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) [2023-11-17 16:02:58,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:02:58,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 145 [2023-11-17 16:02:58,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:03:06,315 INFO L124 PetriNetUnfolderBase]: 909/1737 cut-off events. [2023-11-17 16:03:06,315 INFO L125 PetriNetUnfolderBase]: For 61807/61807 co-relation queries the response was YES. [2023-11-17 16:03:06,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15738 conditions, 1737 events. 909/1737 cut-off events. For 61807/61807 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 10881 event pairs, 77 based on Foata normal form. 2/1721 useless extension candidates. Maximal degree in co-relation 15534. Up to 1258 conditions per place. [2023-11-17 16:03:06,331 INFO L140 encePairwiseOnDemand]: 139/145 looper letters, 346 selfloop transitions, 104 changer transitions 5/455 dead transitions. [2023-11-17 16:03:06,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 455 transitions, 7719 flow [2023-11-17 16:03:06,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 16:03:06,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 16:03:06,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 996 transitions. [2023-11-17 16:03:06,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4579310344827586 [2023-11-17 16:03:06,333 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 996 transitions. [2023-11-17 16:03:06,333 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 996 transitions. [2023-11-17 16:03:06,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:03:06,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 996 transitions. [2023-11-17 16:03:06,334 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 66.4) internal successors, (996), 15 states have internal predecessors, (996), 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) [2023-11-17 16:03:06,336 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 145.0) internal successors, (2320), 16 states have internal predecessors, (2320), 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) [2023-11-17 16:03:06,336 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 145.0) internal successors, (2320), 16 states have internal predecessors, (2320), 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) [2023-11-17 16:03:06,336 INFO L175 Difference]: Start difference. First operand has 371 places, 414 transitions, 5956 flow. Second operand 15 states and 996 transitions. [2023-11-17 16:03:06,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 455 transitions, 7719 flow [2023-11-17 16:03:06,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 455 transitions, 7627 flow, removed 33 selfloop flow, removed 6 redundant places. [2023-11-17 16:03:06,721 INFO L231 Difference]: Finished difference. Result has 377 places, 422 transitions, 6486 flow [2023-11-17 16:03:06,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=5868, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=414, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=6486, PETRI_PLACES=377, PETRI_TRANSITIONS=422} [2023-11-17 16:03:06,722 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 357 predicate places. [2023-11-17 16:03:06,722 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 422 transitions, 6486 flow [2023-11-17 16:03:06,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 63.6) internal successors, (954), 15 states have internal predecessors, (954), 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) [2023-11-17 16:03:06,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:03:06,722 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:03:06,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2023-11-17 16:03:06,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:03:06,923 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:03:06,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:03:06,923 INFO L85 PathProgramCache]: Analyzing trace with hash -823392520, now seen corresponding path program 23 times [2023-11-17 16:03:06,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:03:06,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699361983] [2023-11-17 16:03:06,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:03:06,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:03:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:03:07,510 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:07,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:03:07,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699361983] [2023-11-17 16:03:07,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699361983] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:03:07,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227107244] [2023-11-17 16:03:07,510 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:03:07,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:03:07,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:03:07,512 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:03:07,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2023-11-17 16:03:07,663 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:03:07,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:03:07,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 16:03:07,665 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:03:07,881 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:07,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:03:08,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:08,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227107244] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:03:08,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:03:08,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-11-17 16:03:08,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229341962] [2023-11-17 16:03:08,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:03:08,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 16:03:08,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:03:08,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 16:03:08,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2023-11-17 16:03:08,641 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 16:03:08,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 422 transitions, 6486 flow. Second operand has 20 states, 20 states have (on average 54.8) internal successors, (1096), 20 states have internal predecessors, (1096), 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) [2023-11-17 16:03:08,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:03:08,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 16:03:08,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:03:12,531 INFO L124 PetriNetUnfolderBase]: 948/1833 cut-off events. [2023-11-17 16:03:12,531 INFO L125 PetriNetUnfolderBase]: For 74275/74275 co-relation queries the response was YES. [2023-11-17 16:03:12,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17261 conditions, 1833 events. 948/1833 cut-off events. For 74275/74275 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 11711 event pairs, 90 based on Foata normal form. 4/1821 useless extension candidates. Maximal degree in co-relation 17057. Up to 1384 conditions per place. [2023-11-17 16:03:12,547 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 379 selfloop transitions, 110 changer transitions 21/510 dead transitions. [2023-11-17 16:03:12,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 510 transitions, 9204 flow [2023-11-17 16:03:12,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 16:03:12,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 16:03:12,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1507 transitions. [2023-11-17 16:03:12,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3997347480106101 [2023-11-17 16:03:12,549 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1507 transitions. [2023-11-17 16:03:12,549 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1507 transitions. [2023-11-17 16:03:12,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:03:12,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1507 transitions. [2023-11-17 16:03:12,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 57.96153846153846) internal successors, (1507), 26 states have internal predecessors, (1507), 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) [2023-11-17 16:03:12,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 145.0) internal successors, (3915), 27 states have internal predecessors, (3915), 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) [2023-11-17 16:03:12,553 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 145.0) internal successors, (3915), 27 states have internal predecessors, (3915), 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) [2023-11-17 16:03:12,553 INFO L175 Difference]: Start difference. First operand has 377 places, 422 transitions, 6486 flow. Second operand 26 states and 1507 transitions. [2023-11-17 16:03:12,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 510 transitions, 9204 flow [2023-11-17 16:03:12,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 510 transitions, 8667 flow, removed 221 selfloop flow, removed 11 redundant places. [2023-11-17 16:03:12,909 INFO L231 Difference]: Finished difference. Result has 403 places, 448 transitions, 7302 flow [2023-11-17 16:03:12,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=6187, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=321, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=7302, PETRI_PLACES=403, PETRI_TRANSITIONS=448} [2023-11-17 16:03:12,909 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 383 predicate places. [2023-11-17 16:03:12,909 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 448 transitions, 7302 flow [2023-11-17 16:03:12,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 54.8) internal successors, (1096), 20 states have internal predecessors, (1096), 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) [2023-11-17 16:03:12,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:03:12,910 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:03:12,914 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2023-11-17 16:03:13,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2023-11-17 16:03:13,111 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:03:13,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:03:13,111 INFO L85 PathProgramCache]: Analyzing trace with hash -222810206, now seen corresponding path program 24 times [2023-11-17 16:03:13,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:03:13,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185626358] [2023-11-17 16:03:13,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:03:13,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:03:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:03:13,683 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:13,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:03:13,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185626358] [2023-11-17 16:03:13,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185626358] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:03:13,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688560610] [2023-11-17 16:03:13,683 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:03:13,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:03:13,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:03:13,684 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:03:13,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2023-11-17 16:03:13,861 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 16:03:13,861 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:03:13,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 16:03:13,863 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:03:14,097 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:14,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:03:15,008 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:15,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688560610] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:03:15,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:03:15,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-11-17 16:03:15,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511433130] [2023-11-17 16:03:15,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:03:15,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 16:03:15,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:03:15,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 16:03:15,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2023-11-17 16:03:15,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 16:03:15,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 448 transitions, 7302 flow. Second operand has 20 states, 20 states have (on average 54.9) internal successors, (1098), 20 states have internal predecessors, (1098), 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) [2023-11-17 16:03:15,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:03:15,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 16:03:15,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:03:18,201 INFO L124 PetriNetUnfolderBase]: 987/1884 cut-off events. [2023-11-17 16:03:18,202 INFO L125 PetriNetUnfolderBase]: For 85365/85365 co-relation queries the response was YES. [2023-11-17 16:03:18,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18531 conditions, 1884 events. 987/1884 cut-off events. For 85365/85365 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 12005 event pairs, 82 based on Foata normal form. 2/1870 useless extension candidates. Maximal degree in co-relation 18372. Up to 1370 conditions per place. [2023-11-17 16:03:18,220 INFO L140 encePairwiseOnDemand]: 136/145 looper letters, 375 selfloop transitions, 136 changer transitions 14/525 dead transitions. [2023-11-17 16:03:18,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 426 places, 525 transitions, 9662 flow [2023-11-17 16:03:18,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 16:03:18,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 16:03:18,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1513 transitions. [2023-11-17 16:03:18,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4013262599469496 [2023-11-17 16:03:18,222 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1513 transitions. [2023-11-17 16:03:18,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1513 transitions. [2023-11-17 16:03:18,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:03:18,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1513 transitions. [2023-11-17 16:03:18,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 58.19230769230769) internal successors, (1513), 26 states have internal predecessors, (1513), 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) [2023-11-17 16:03:18,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 145.0) internal successors, (3915), 27 states have internal predecessors, (3915), 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) [2023-11-17 16:03:18,226 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 145.0) internal successors, (3915), 27 states have internal predecessors, (3915), 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) [2023-11-17 16:03:18,227 INFO L175 Difference]: Start difference. First operand has 403 places, 448 transitions, 7302 flow. Second operand 26 states and 1513 transitions. [2023-11-17 16:03:18,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 426 places, 525 transitions, 9662 flow [2023-11-17 16:03:18,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 525 transitions, 9060 flow, removed 255 selfloop flow, removed 17 redundant places. [2023-11-17 16:03:18,627 INFO L231 Difference]: Finished difference. Result has 414 places, 466 transitions, 7785 flow [2023-11-17 16:03:18,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=6700, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=7785, PETRI_PLACES=414, PETRI_TRANSITIONS=466} [2023-11-17 16:03:18,628 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 394 predicate places. [2023-11-17 16:03:18,628 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 466 transitions, 7785 flow [2023-11-17 16:03:18,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 54.9) internal successors, (1098), 20 states have internal predecessors, (1098), 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) [2023-11-17 16:03:18,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:03:18,628 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:03:18,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2023-11-17 16:03:18,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2023-11-17 16:03:18,833 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:03:18,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:03:18,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1770604068, now seen corresponding path program 25 times [2023-11-17 16:03:18,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:03:18,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115415779] [2023-11-17 16:03:18,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:03:18,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:03:18,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:03:19,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:19,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:03:19,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115415779] [2023-11-17 16:03:19,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115415779] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:03:19,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1814202584] [2023-11-17 16:03:19,393 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:03:19,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:03:19,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:03:19,394 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:03:19,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2023-11-17 16:03:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:03:19,552 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 16:03:19,553 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:03:19,878 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:19,878 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:03:20,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:20,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1814202584] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:03:20,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:03:20,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2023-11-17 16:03:20,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126259608] [2023-11-17 16:03:20,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:03:20,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 16:03:20,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:03:20,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 16:03:20,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-11-17 16:03:20,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 16:03:20,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 466 transitions, 7785 flow. Second operand has 21 states, 21 states have (on average 54.76190476190476) internal successors, (1150), 21 states have internal predecessors, (1150), 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) [2023-11-17 16:03:20,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:03:20,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 16:03:20,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:03:23,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:03:27,651 INFO L124 PetriNetUnfolderBase]: 1007/1948 cut-off events. [2023-11-17 16:03:27,651 INFO L125 PetriNetUnfolderBase]: For 57121/57121 co-relation queries the response was YES. [2023-11-17 16:03:27,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17893 conditions, 1948 events. 1007/1948 cut-off events. For 57121/57121 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12689 event pairs, 76 based on Foata normal form. 4/1938 useless extension candidates. Maximal degree in co-relation 17648. Up to 1330 conditions per place. [2023-11-17 16:03:27,670 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 383 selfloop transitions, 143 changer transitions 29/555 dead transitions. [2023-11-17 16:03:27,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 555 transitions, 9870 flow [2023-11-17 16:03:27,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-11-17 16:03:27,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-11-17 16:03:27,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 1850 transitions. [2023-11-17 16:03:27,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39870689655172414 [2023-11-17 16:03:27,673 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 1850 transitions. [2023-11-17 16:03:27,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 1850 transitions. [2023-11-17 16:03:27,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:03:27,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 1850 transitions. [2023-11-17 16:03:27,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 57.8125) internal successors, (1850), 32 states have internal predecessors, (1850), 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) [2023-11-17 16:03:27,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 145.0) internal successors, (4785), 33 states have internal predecessors, (4785), 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) [2023-11-17 16:03:27,677 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 145.0) internal successors, (4785), 33 states have internal predecessors, (4785), 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) [2023-11-17 16:03:27,678 INFO L175 Difference]: Start difference. First operand has 414 places, 466 transitions, 7785 flow. Second operand 32 states and 1850 transitions. [2023-11-17 16:03:27,678 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 555 transitions, 9870 flow [2023-11-17 16:03:28,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 555 transitions, 9215 flow, removed 267 selfloop flow, removed 19 redundant places. [2023-11-17 16:03:28,041 INFO L231 Difference]: Finished difference. Result has 431 places, 479 transitions, 7770 flow [2023-11-17 16:03:28,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=7140, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=466, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=7770, PETRI_PLACES=431, PETRI_TRANSITIONS=479} [2023-11-17 16:03:28,042 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 411 predicate places. [2023-11-17 16:03:28,042 INFO L495 AbstractCegarLoop]: Abstraction has has 431 places, 479 transitions, 7770 flow [2023-11-17 16:03:28,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 54.76190476190476) internal successors, (1150), 21 states have internal predecessors, (1150), 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) [2023-11-17 16:03:28,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:03:28,042 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:03:28,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2023-11-17 16:03:28,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-17 16:03:28,249 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:03:28,249 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:03:28,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1162730866, now seen corresponding path program 9 times [2023-11-17 16:03:28,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:03:28,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117287346] [2023-11-17 16:03:28,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:03:28,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:03:28,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:03:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:28,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:03:28,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117287346] [2023-11-17 16:03:28,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117287346] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:03:28,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956360331] [2023-11-17 16:03:28,465 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:03:28,465 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:03:28,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:03:28,467 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:03:28,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2023-11-17 16:03:28,555 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 16:03:28,555 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:03:28,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:03:28,556 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:03:30,689 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:03:30,689 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:03:34,868 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_~x_1~0 4294967296))) (let ((.cse6 (+ .cse0 4294967296)) (.cse3 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse4 (mod c_~x_2~0 4294967296))) (and (forall ((v_y_319 Int) (v_z_319 Int)) (let ((.cse2 (+ (* 2863311531 v_z_319) (* v_y_319 4294967296))) (.cse1 (+ .cse4 v_z_319))) (or (= .cse0 .cse1) (< v_z_319 0) (< .cse2 0) (< .cse3 .cse2) (< 4294967295 .cse1)))) (forall ((v_y_319 Int) (v_z_319 Int)) (let ((.cse5 (+ .cse4 v_z_319)) (.cse7 (+ (* 2863311531 v_z_319) (* v_y_319 4294967296)))) (or (= .cse0 .cse5) (< 4294967295 v_z_319) (< v_z_319 0) (= .cse6 .cse5) (< .cse7 0) (< .cse3 .cse7)))) (forall ((v_y_319 Int) (v_z_319 Int)) (let ((.cse8 (+ .cse4 v_z_319)) (.cse9 (+ (* 2863311531 v_z_319) (* v_y_319 4294967296)))) (or (< 4294967295 v_z_319) (< .cse8 4294967296) (= .cse6 .cse8) (< .cse9 0) (< .cse3 .cse9))))))) is different from false [2023-11-17 16:03:45,230 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_~x_1~0 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (forall ((v_y_319 Int) (v_z_319 Int)) (let ((.cse1 (+ .cse2 v_z_319))) (or (= .cse0 .cse1) (< 4294967295 v_z_319) (< v_z_319 0) (= (+ .cse0 4294967296) .cse1) (not (= (+ (* 2863311531 v_z_319) (* v_y_319 4294967296)) 0))))) (forall ((v_y_319 Int) (v_z_319 Int)) (let ((.cse3 (+ .cse2 v_z_319))) (or (= .cse0 .cse3) (< v_z_319 0) (not (= (+ (* 2863311531 v_z_319) (* v_y_319 4294967296)) 0)) (< 4294967295 .cse3)))))) is different from false [2023-11-17 16:04:06,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-11-17 16:04:06,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956360331] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:04:06,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:04:06,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-11-17 16:04:06,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470968742] [2023-11-17 16:04:06,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:04:06,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 16:04:06,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:04:06,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 16:04:06,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=157, Unknown=4, NotChecked=54, Total=272 [2023-11-17 16:04:06,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 145 [2023-11-17 16:04:06,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 479 transitions, 7770 flow. Second operand has 17 states, 17 states have (on average 63.35294117647059) internal successors, (1077), 17 states have internal predecessors, (1077), 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) [2023-11-17 16:04:06,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:04:06,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 145 [2023-11-17 16:04:06,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:04:08,757 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_~x_1~0 4294967296)) (.cse2 (mod c_~x_2~0 4294967296))) (and (= c_~x_2~0 0) (forall ((v_y_319 Int) (v_z_319 Int)) (let ((.cse1 (+ .cse2 v_z_319))) (or (= .cse0 .cse1) (< 4294967295 v_z_319) (< v_z_319 0) (= (+ .cse0 4294967296) .cse1) (not (= (+ (* 2863311531 v_z_319) (* v_y_319 4294967296)) 0))))) (= c_~x_1~0 0) (forall ((v_y_319 Int) (v_z_319 Int)) (let ((.cse3 (+ .cse2 v_z_319))) (or (= .cse0 .cse3) (< v_z_319 0) (not (= (+ (* 2863311531 v_z_319) (* v_y_319 4294967296)) 0)) (< 4294967295 .cse3)))))) is different from false [2023-11-17 16:04:10,778 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_~x_1~0 4294967296))) (let ((.cse6 (+ .cse0 4294967296)) (.cse3 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse4 (mod c_~x_2~0 4294967296))) (and (forall ((v_y_319 Int) (v_z_319 Int)) (let ((.cse2 (+ (* 2863311531 v_z_319) (* v_y_319 4294967296))) (.cse1 (+ .cse4 v_z_319))) (or (= .cse0 .cse1) (< v_z_319 0) (< .cse2 0) (< .cse3 .cse2) (< 4294967295 .cse1)))) (= c_~x_2~0 0) (= c_thread1Thread1of1ForFork0_~i~0 0) (= c_~x_1~0 0) (forall ((v_y_319 Int) (v_z_319 Int)) (let ((.cse5 (+ .cse4 v_z_319)) (.cse7 (+ (* 2863311531 v_z_319) (* v_y_319 4294967296)))) (or (= .cse0 .cse5) (< 4294967295 v_z_319) (< v_z_319 0) (= .cse6 .cse5) (< .cse7 0) (< .cse3 .cse7)))) (forall ((v_y_319 Int) (v_z_319 Int)) (let ((.cse8 (+ .cse4 v_z_319)) (.cse9 (+ (* 2863311531 v_z_319) (* v_y_319 4294967296)))) (or (< 4294967295 v_z_319) (< .cse8 4294967296) (= .cse6 .cse8) (< .cse9 0) (< .cse3 .cse9))))))) is different from false [2023-11-17 16:04:11,716 INFO L124 PetriNetUnfolderBase]: 1012/1945 cut-off events. [2023-11-17 16:04:11,716 INFO L125 PetriNetUnfolderBase]: For 43075/43075 co-relation queries the response was YES. [2023-11-17 16:04:11,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17396 conditions, 1945 events. 1012/1945 cut-off events. For 43075/43075 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 12543 event pairs, 266 based on Foata normal form. 3/1934 useless extension candidates. Maximal degree in co-relation 17231. Up to 1850 conditions per place. [2023-11-17 16:04:11,741 INFO L140 encePairwiseOnDemand]: 135/145 looper letters, 472 selfloop transitions, 23 changer transitions 23/518 dead transitions. [2023-11-17 16:04:11,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 439 places, 518 transitions, 9245 flow [2023-11-17 16:04:11,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 16:04:11,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 16:04:11,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 866 transitions. [2023-11-17 16:04:11,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45941644562334216 [2023-11-17 16:04:11,780 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 866 transitions. [2023-11-17 16:04:11,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 866 transitions. [2023-11-17 16:04:11,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:04:11,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 866 transitions. [2023-11-17 16:04:11,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 66.61538461538461) internal successors, (866), 13 states have internal predecessors, (866), 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) [2023-11-17 16:04:11,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 145.0) internal successors, (2030), 14 states have internal predecessors, (2030), 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) [2023-11-17 16:04:11,782 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 145.0) internal successors, (2030), 14 states have internal predecessors, (2030), 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) [2023-11-17 16:04:11,783 INFO L175 Difference]: Start difference. First operand has 431 places, 479 transitions, 7770 flow. Second operand 13 states and 866 transitions. [2023-11-17 16:04:11,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 439 places, 518 transitions, 9245 flow [2023-11-17 16:04:12,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 518 transitions, 8728 flow, removed 162 selfloop flow, removed 17 redundant places. [2023-11-17 16:04:12,063 INFO L231 Difference]: Finished difference. Result has 428 places, 480 transitions, 7365 flow [2023-11-17 16:04:12,063 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=7292, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=7365, PETRI_PLACES=428, PETRI_TRANSITIONS=480} [2023-11-17 16:04:12,063 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 408 predicate places. [2023-11-17 16:04:12,064 INFO L495 AbstractCegarLoop]: Abstraction has has 428 places, 480 transitions, 7365 flow [2023-11-17 16:04:12,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 63.35294117647059) internal successors, (1077), 17 states have internal predecessors, (1077), 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) [2023-11-17 16:04:12,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:04:12,064 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:04:12,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Forceful destruction successful, exit code 0 [2023-11-17 16:04:12,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2023-11-17 16:04:12,270 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:04:12,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:04:12,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1075629424, now seen corresponding path program 26 times [2023-11-17 16:04:12,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:04:12,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531117065] [2023-11-17 16:04:12,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:04:12,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:04:12,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:04:12,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:04:12,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:04:12,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531117065] [2023-11-17 16:04:12,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531117065] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:04:12,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1034074738] [2023-11-17 16:04:12,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:04:12,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:04:12,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:04:12,837 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:04:12,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2023-11-17 16:04:13,028 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:04:13,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:04:13,029 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 16:04:13,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:04:13,272 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:04:13,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:04:40,687 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (+ (mod c_thread2Thread1of1ForFork1_~i~1 4294967296) 1)) (.cse0 (mod (+ c_thread2Thread1of1ForFork1_~i~1 1) 4294967296)) (.cse3 (* (div c_~x_2~0 4294967296) 4294967296))) (and (forall ((v_z_330 Int)) (or (< .cse0 v_z_330) (< v_z_330 .cse1) (let ((.cse2 (* 2 v_z_330))) (< (+ c_~x_2~0 (* (div (+ .cse2 c_~x_1~0) 4294967296) 4294967296)) (+ .cse2 c_~x_1~0 4294967295 .cse3))))) (forall ((v_z_328 Int)) (let ((.cse5 (* 2 v_z_328))) (let ((.cse4 (* (div (+ c_~x_1~0 .cse5) 4294967296) 4294967296))) (or (< .cse0 v_z_328) (< (+ c_~x_2~0 .cse4 1) (+ c_~x_1~0 .cse5 .cse3)) (< (+ c_~x_1~0 .cse5 .cse3 4294967293) (+ c_~x_2~0 .cse4)) (< v_z_328 .cse1))))) (forall ((v_z_326 Int)) (or (< v_z_326 .cse1) (< .cse0 v_z_326) (let ((.cse6 (* 2 v_z_326))) (< (+ c_~x_1~0 .cse6 .cse3) (+ c_~x_2~0 (* (div (+ c_~x_1~0 .cse6) 4294967296) 4294967296) 3))))))) is different from false [2023-11-17 16:04:40,734 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:04:40,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1034074738] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:04:40,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:04:40,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-11-17 16:04:40,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057489255] [2023-11-17 16:04:40,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:04:40,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 16:04:40,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:04:40,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 16:04:40,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=253, Unknown=13, NotChecked=34, Total=380 [2023-11-17 16:04:40,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 16:04:40,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 480 transitions, 7365 flow. Second operand has 20 states, 20 states have (on average 54.8) internal successors, (1096), 20 states have internal predecessors, (1096), 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) [2023-11-17 16:04:40,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:04:40,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 16:04:40,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:04:54,439 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:04:57,281 INFO L124 PetriNetUnfolderBase]: 1052/2013 cut-off events. [2023-11-17 16:04:57,282 INFO L125 PetriNetUnfolderBase]: For 54530/54530 co-relation queries the response was YES. [2023-11-17 16:04:57,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17818 conditions, 2013 events. 1052/2013 cut-off events. For 54530/54530 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 12967 event pairs, 204 based on Foata normal form. 2/2001 useless extension candidates. Maximal degree in co-relation 17555. Up to 1804 conditions per place. [2023-11-17 16:04:57,304 INFO L140 encePairwiseOnDemand]: 136/145 looper letters, 451 selfloop transitions, 84 changer transitions 10/545 dead transitions. [2023-11-17 16:04:57,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 545 transitions, 9562 flow [2023-11-17 16:04:57,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-17 16:04:57,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-17 16:04:57,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1382 transitions. [2023-11-17 16:04:57,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3971264367816092 [2023-11-17 16:04:57,305 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1382 transitions. [2023-11-17 16:04:57,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1382 transitions. [2023-11-17 16:04:57,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:04:57,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1382 transitions. [2023-11-17 16:04:57,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 57.583333333333336) internal successors, (1382), 24 states have internal predecessors, (1382), 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) [2023-11-17 16:04:57,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 145.0) internal successors, (3625), 25 states have internal predecessors, (3625), 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) [2023-11-17 16:04:57,309 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 145.0) internal successors, (3625), 25 states have internal predecessors, (3625), 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) [2023-11-17 16:04:57,309 INFO L175 Difference]: Start difference. First operand has 428 places, 480 transitions, 7365 flow. Second operand 24 states and 1382 transitions. [2023-11-17 16:04:57,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 545 transitions, 9562 flow [2023-11-17 16:04:57,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 545 transitions, 9392 flow, removed 46 selfloop flow, removed 14 redundant places. [2023-11-17 16:04:57,700 INFO L231 Difference]: Finished difference. Result has 442 places, 502 transitions, 8144 flow [2023-11-17 16:04:57,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=7200, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=8144, PETRI_PLACES=442, PETRI_TRANSITIONS=502} [2023-11-17 16:04:57,701 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 422 predicate places. [2023-11-17 16:04:57,701 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 502 transitions, 8144 flow [2023-11-17 16:04:57,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 54.8) internal successors, (1096), 20 states have internal predecessors, (1096), 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) [2023-11-17 16:04:57,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:04:57,701 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:04:57,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2023-11-17 16:04:57,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:04:57,902 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:04:57,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:04:57,902 INFO L85 PathProgramCache]: Analyzing trace with hash -641730858, now seen corresponding path program 10 times [2023-11-17 16:04:57,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:04:57,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251344978] [2023-11-17 16:04:57,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:04:57,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:04:57,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:04:58,041 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:04:58,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:04:58,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251344978] [2023-11-17 16:04:58,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251344978] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:04:58,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083467759] [2023-11-17 16:04:58,041 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:04:58,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:04:58,041 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:04:58,042 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:04:58,044 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2023-11-17 16:04:58,129 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:04:58,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:04:58,130 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-17 16:04:58,131 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:00,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:00,267 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:05:04,470 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (mod c_~x_1~0 4294967296))) (let ((.cse1 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse6 (+ .cse2 4294967296)) (.cse4 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_334 Int) (v_y_334 Int)) (let ((.cse0 (+ (* v_y_334 4294967296) (* 2863311531 v_z_334))) (.cse3 (+ .cse4 v_z_334))) (or (< .cse0 0) (< .cse1 .cse0) (= .cse2 .cse3) (< v_z_334 0) (< 4294967295 .cse3)))) (forall ((v_z_334 Int) (v_y_334 Int)) (let ((.cse5 (+ (* v_y_334 4294967296) (* 2863311531 v_z_334))) (.cse7 (+ .cse4 v_z_334))) (or (< 4294967295 v_z_334) (< .cse5 0) (< .cse1 .cse5) (= .cse6 .cse7) (= .cse2 .cse7) (< v_z_334 0)))) (forall ((v_z_334 Int) (v_y_334 Int)) (let ((.cse8 (+ (* v_y_334 4294967296) (* 2863311531 v_z_334))) (.cse9 (+ .cse4 v_z_334))) (or (< 4294967295 v_z_334) (< .cse8 0) (< .cse9 4294967296) (< .cse1 .cse8) (= .cse6 .cse9))))))) is different from false [2023-11-17 16:05:16,761 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_~x_1~0 4294967296)) (.cse1 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_334 Int) (v_y_334 Int)) (or (< 4294967295 v_z_334) (not (= (+ (* v_y_334 4294967296) (* 2863311531 v_z_334)) 0)) (= .cse0 (+ .cse1 v_z_334)) (< v_z_334 0))) (forall ((v_z_334 Int) (v_y_334 Int)) (let ((.cse2 (+ .cse1 v_z_334))) (or (not (= (+ (* v_y_334 4294967296) (* 2863311531 v_z_334)) 0)) (= .cse0 .cse2) (< v_z_334 0) (< 4294967295 .cse2)))))) is different from false [2023-11-17 16:05:21,032 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 3 not checked. [2023-11-17 16:05:21,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083467759] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:05:21,033 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:05:21,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2023-11-17 16:05:21,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483065444] [2023-11-17 16:05:21,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:05:21,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 16:05:21,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:21,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 16:05:21,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=157, Unknown=4, NotChecked=54, Total=272 [2023-11-17 16:05:21,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 145 [2023-11-17 16:05:21,035 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 502 transitions, 8144 flow. Second operand has 17 states, 17 states have (on average 63.35294117647059) internal successors, (1077), 17 states have internal predecessors, (1077), 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) [2023-11-17 16:05:21,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:21,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 145 [2023-11-17 16:05:21,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:23,067 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_~x_1~0 4294967296)) (.cse1 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_334 Int) (v_y_334 Int)) (or (< 4294967295 v_z_334) (not (= (+ (* v_y_334 4294967296) (* 2863311531 v_z_334)) 0)) (= .cse0 (+ .cse1 v_z_334)) (< v_z_334 0))) (= c_~x_2~0 0) (= c_~x_1~0 0) (forall ((v_z_334 Int) (v_y_334 Int)) (let ((.cse2 (+ .cse1 v_z_334))) (or (not (= (+ (* v_y_334 4294967296) (* 2863311531 v_z_334)) 0)) (= .cse0 .cse2) (< v_z_334 0) (< 4294967295 .cse2)))))) is different from false [2023-11-17 16:05:25,089 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse2 (mod c_~x_1~0 4294967296))) (let ((.cse1 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse6 (+ .cse2 4294967296)) (.cse4 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_334 Int) (v_y_334 Int)) (let ((.cse0 (+ (* v_y_334 4294967296) (* 2863311531 v_z_334))) (.cse3 (+ .cse4 v_z_334))) (or (< .cse0 0) (< .cse1 .cse0) (= .cse2 .cse3) (< v_z_334 0) (< 4294967295 .cse3)))) (= c_~x_2~0 0) (= c_thread1Thread1of1ForFork0_~i~0 0) (forall ((v_z_334 Int) (v_y_334 Int)) (let ((.cse5 (+ (* v_y_334 4294967296) (* 2863311531 v_z_334))) (.cse7 (+ .cse4 v_z_334))) (or (< 4294967295 v_z_334) (< .cse5 0) (< .cse1 .cse5) (= .cse6 .cse7) (= .cse2 .cse7) (< v_z_334 0)))) (= c_~x_1~0 0) (forall ((v_z_334 Int) (v_y_334 Int)) (let ((.cse8 (+ (* v_y_334 4294967296) (* 2863311531 v_z_334))) (.cse9 (+ .cse4 v_z_334))) (or (< 4294967295 v_z_334) (< .cse8 0) (< .cse9 4294967296) (< .cse1 .cse8) (= .cse6 .cse9))))))) is different from false [2023-11-17 16:05:26,274 INFO L124 PetriNetUnfolderBase]: 1075/2064 cut-off events. [2023-11-17 16:05:26,274 INFO L125 PetriNetUnfolderBase]: For 55446/55446 co-relation queries the response was YES. [2023-11-17 16:05:26,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18616 conditions, 2064 events. 1075/2064 cut-off events. For 55446/55446 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 13443 event pairs, 432 based on Foata normal form. 3/2053 useless extension candidates. Maximal degree in co-relation 18353. Up to 1960 conditions per place. [2023-11-17 16:05:26,348 INFO L140 encePairwiseOnDemand]: 135/145 looper letters, 494 selfloop transitions, 36 changer transitions 19/549 dead transitions. [2023-11-17 16:05:26,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 549 transitions, 9955 flow [2023-11-17 16:05:26,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 16:05:26,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 16:05:26,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 862 transitions. [2023-11-17 16:05:26,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4572944297082228 [2023-11-17 16:05:26,350 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 862 transitions. [2023-11-17 16:05:26,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 862 transitions. [2023-11-17 16:05:26,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:26,350 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 862 transitions. [2023-11-17 16:05:26,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 66.3076923076923) internal successors, (862), 13 states have internal predecessors, (862), 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) [2023-11-17 16:05:26,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 145.0) internal successors, (2030), 14 states have internal predecessors, (2030), 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) [2023-11-17 16:05:26,354 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 145.0) internal successors, (2030), 14 states have internal predecessors, (2030), 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) [2023-11-17 16:05:26,354 INFO L175 Difference]: Start difference. First operand has 442 places, 502 transitions, 8144 flow. Second operand 13 states and 862 transitions. [2023-11-17 16:05:26,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 549 transitions, 9955 flow [2023-11-17 16:05:26,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 439 places, 549 transitions, 9532 flow, removed 172 selfloop flow, removed 13 redundant places. [2023-11-17 16:05:26,791 INFO L231 Difference]: Finished difference. Result has 448 places, 516 transitions, 8224 flow [2023-11-17 16:05:26,792 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=7731, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8224, PETRI_PLACES=448, PETRI_TRANSITIONS=516} [2023-11-17 16:05:26,792 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 428 predicate places. [2023-11-17 16:05:26,793 INFO L495 AbstractCegarLoop]: Abstraction has has 448 places, 516 transitions, 8224 flow [2023-11-17 16:05:26,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 63.35294117647059) internal successors, (1077), 17 states have internal predecessors, (1077), 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) [2023-11-17 16:05:26,793 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:26,793 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:26,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2023-11-17 16:05:26,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:26,999 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:05:26,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:27,000 INFO L85 PathProgramCache]: Analyzing trace with hash 878895744, now seen corresponding path program 27 times [2023-11-17 16:05:27,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:27,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615550556] [2023-11-17 16:05:27,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:27,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:27,740 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:27,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:27,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615550556] [2023-11-17 16:05:27,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615550556] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:27,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906994643] [2023-11-17 16:05:27,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:05:27,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:27,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:27,742 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:05:27,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2023-11-17 16:05:27,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 16:05:27,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:05:27,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 16:05:27,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:28,039 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:28,039 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:05:28,755 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:28,756 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906994643] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:05:28,756 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:05:28,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-11-17 16:05:28,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987237969] [2023-11-17 16:05:28,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:05:28,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 16:05:28,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:28,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 16:05:28,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2023-11-17 16:05:28,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 16:05:28,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 448 places, 516 transitions, 8224 flow. Second operand has 20 states, 20 states have (on average 54.8) internal successors, (1096), 20 states have internal predecessors, (1096), 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) [2023-11-17 16:05:28,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:28,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 16:05:28,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:34,000 INFO L124 PetriNetUnfolderBase]: 1136/2177 cut-off events. [2023-11-17 16:05:34,000 INFO L125 PetriNetUnfolderBase]: For 76193/76193 co-relation queries the response was YES. [2023-11-17 16:05:34,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20656 conditions, 2177 events. 1136/2177 cut-off events. For 76193/76193 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 14269 event pairs, 98 based on Foata normal form. 2/2163 useless extension candidates. Maximal degree in co-relation 20384. Up to 1499 conditions per place. [2023-11-17 16:05:34,023 INFO L140 encePairwiseOnDemand]: 136/145 looper letters, 419 selfloop transitions, 180 changer transitions 13/612 dead transitions. [2023-11-17 16:05:34,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 612 transitions, 11187 flow [2023-11-17 16:05:34,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-17 16:05:34,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-17 16:05:34,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1914 transitions. [2023-11-17 16:05:34,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4 [2023-11-17 16:05:34,026 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1914 transitions. [2023-11-17 16:05:34,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1914 transitions. [2023-11-17 16:05:34,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:34,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1914 transitions. [2023-11-17 16:05:34,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 58.0) internal successors, (1914), 33 states have internal predecessors, (1914), 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) [2023-11-17 16:05:34,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 145.0) internal successors, (4930), 34 states have internal predecessors, (4930), 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) [2023-11-17 16:05:34,030 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 145.0) internal successors, (4930), 34 states have internal predecessors, (4930), 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) [2023-11-17 16:05:34,030 INFO L175 Difference]: Start difference. First operand has 448 places, 516 transitions, 8224 flow. Second operand 33 states and 1914 transitions. [2023-11-17 16:05:34,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 612 transitions, 11187 flow [2023-11-17 16:05:34,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 612 transitions, 11100 flow, removed 22 selfloop flow, removed 8 redundant places. [2023-11-17 16:05:34,445 INFO L231 Difference]: Finished difference. Result has 473 places, 540 transitions, 9522 flow [2023-11-17 16:05:34,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=8141, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=347, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=9522, PETRI_PLACES=473, PETRI_TRANSITIONS=540} [2023-11-17 16:05:34,446 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 453 predicate places. [2023-11-17 16:05:34,446 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 540 transitions, 9522 flow [2023-11-17 16:05:34,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 54.8) internal successors, (1096), 20 states have internal predecessors, (1096), 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) [2023-11-17 16:05:34,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:34,446 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:34,453 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Ended with exit code 0 [2023-11-17 16:05:34,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2023-11-17 16:05:34,647 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:05:34,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:34,647 INFO L85 PathProgramCache]: Analyzing trace with hash 1852881524, now seen corresponding path program 28 times [2023-11-17 16:05:34,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:34,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929060382] [2023-11-17 16:05:34,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:34,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:35,433 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:35,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:35,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929060382] [2023-11-17 16:05:35,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929060382] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:35,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909110361] [2023-11-17 16:05:35,433 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:05:35,433 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:35,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:35,434 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:05:35,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2023-11-17 16:05:35,539 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:05:35,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:05:35,540 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 16:05:35,541 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:35,802 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:35,802 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:05:37,626 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:37,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909110361] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:05:37,626 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:05:37,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2023-11-17 16:05:37,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684673830] [2023-11-17 16:05:37,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:05:37,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 16:05:37,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:37,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 16:05:37,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2023-11-17 16:05:37,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 16:05:37,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 540 transitions, 9522 flow. Second operand has 22 states, 22 states have (on average 54.72727272727273) internal successors, (1204), 22 states have internal predecessors, (1204), 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) [2023-11-17 16:05:37,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:37,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 16:05:37,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:42,806 INFO L124 PetriNetUnfolderBase]: 1141/2185 cut-off events. [2023-11-17 16:05:42,806 INFO L125 PetriNetUnfolderBase]: For 80572/80572 co-relation queries the response was YES. [2023-11-17 16:05:42,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21413 conditions, 2185 events. 1141/2185 cut-off events. For 80572/80572 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 14335 event pairs, 138 based on Foata normal form. 5/2176 useless extension candidates. Maximal degree in co-relation 21247. Up to 1869 conditions per place. [2023-11-17 16:05:42,889 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 403 selfloop transitions, 168 changer transitions 15/586 dead transitions. [2023-11-17 16:05:42,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 586 transitions, 11221 flow [2023-11-17 16:05:42,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-17 16:05:42,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-11-17 16:05:42,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 1550 transitions. [2023-11-17 16:05:42,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3959131545338442 [2023-11-17 16:05:42,891 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 1550 transitions. [2023-11-17 16:05:42,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 1550 transitions. [2023-11-17 16:05:42,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:42,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 1550 transitions. [2023-11-17 16:05:42,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 57.407407407407405) internal successors, (1550), 27 states have internal predecessors, (1550), 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) [2023-11-17 16:05:42,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 145.0) internal successors, (4060), 28 states have internal predecessors, (4060), 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) [2023-11-17 16:05:42,896 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 145.0) internal successors, (4060), 28 states have internal predecessors, (4060), 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) [2023-11-17 16:05:42,896 INFO L175 Difference]: Start difference. First operand has 473 places, 540 transitions, 9522 flow. Second operand 27 states and 1550 transitions. [2023-11-17 16:05:42,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 497 places, 586 transitions, 11221 flow [2023-11-17 16:05:43,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 586 transitions, 10623 flow, removed 228 selfloop flow, removed 24 redundant places. [2023-11-17 16:05:43,542 INFO L231 Difference]: Finished difference. Result has 478 places, 542 transitions, 9373 flow [2023-11-17 16:05:43,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=8928, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=9373, PETRI_PLACES=478, PETRI_TRANSITIONS=542} [2023-11-17 16:05:43,543 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 458 predicate places. [2023-11-17 16:05:43,543 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 542 transitions, 9373 flow [2023-11-17 16:05:43,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 54.72727272727273) internal successors, (1204), 22 states have internal predecessors, (1204), 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) [2023-11-17 16:05:43,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:43,544 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:43,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2023-11-17 16:05:43,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2023-11-17 16:05:43,749 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:05:43,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:43,749 INFO L85 PathProgramCache]: Analyzing trace with hash -411646838, now seen corresponding path program 29 times [2023-11-17 16:05:43,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:43,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070384205] [2023-11-17 16:05:43,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:43,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:44,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:44,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:44,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070384205] [2023-11-17 16:05:44,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070384205] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:44,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010453634] [2023-11-17 16:05:44,331 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:05:44,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:44,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:44,333 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:05:44,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2023-11-17 16:05:44,506 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:05:44,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:05:44,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 16:05:44,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:44,839 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:44,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:05:45,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:45,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010453634] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:05:45,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:05:45,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 19 [2023-11-17 16:05:45,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311168496] [2023-11-17 16:05:45,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:05:45,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 16:05:45,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:05:45,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 16:05:45,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2023-11-17 16:05:45,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 16:05:45,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 542 transitions, 9373 flow. Second operand has 21 states, 21 states have (on average 54.76190476190476) internal successors, (1150), 21 states have internal predecessors, (1150), 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) [2023-11-17 16:05:45,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:05:45,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 16:05:45,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:05:51,289 INFO L124 PetriNetUnfolderBase]: 1195/2282 cut-off events. [2023-11-17 16:05:51,289 INFO L125 PetriNetUnfolderBase]: For 88125/88125 co-relation queries the response was YES. [2023-11-17 16:05:51,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22804 conditions, 2282 events. 1195/2282 cut-off events. For 88125/88125 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 15128 event pairs, 167 based on Foata normal form. 2/2272 useless extension candidates. Maximal degree in co-relation 22641. Up to 1516 conditions per place. [2023-11-17 16:05:51,317 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 444 selfloop transitions, 188 changer transitions 13/645 dead transitions. [2023-11-17 16:05:51,317 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 507 places, 645 transitions, 12560 flow [2023-11-17 16:05:51,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-17 16:05:51,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-17 16:05:51,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 1917 transitions. [2023-11-17 16:05:51,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006269592476489 [2023-11-17 16:05:51,320 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 1917 transitions. [2023-11-17 16:05:51,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 1917 transitions. [2023-11-17 16:05:51,320 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:05:51,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 1917 transitions. [2023-11-17 16:05:51,322 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 58.09090909090909) internal successors, (1917), 33 states have internal predecessors, (1917), 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) [2023-11-17 16:05:51,324 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 145.0) internal successors, (4930), 34 states have internal predecessors, (4930), 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) [2023-11-17 16:05:51,324 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 145.0) internal successors, (4930), 34 states have internal predecessors, (4930), 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) [2023-11-17 16:05:51,324 INFO L175 Difference]: Start difference. First operand has 478 places, 542 transitions, 9373 flow. Second operand 33 states and 1917 transitions. [2023-11-17 16:05:51,324 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 507 places, 645 transitions, 12560 flow [2023-11-17 16:05:51,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 645 transitions, 12178 flow, removed 77 selfloop flow, removed 22 redundant places. [2023-11-17 16:05:51,888 INFO L231 Difference]: Finished difference. Result has 492 places, 561 transitions, 10405 flow [2023-11-17 16:05:51,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=9012, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=541, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=362, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=10405, PETRI_PLACES=492, PETRI_TRANSITIONS=561} [2023-11-17 16:05:51,889 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 472 predicate places. [2023-11-17 16:05:51,889 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 561 transitions, 10405 flow [2023-11-17 16:05:51,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 54.76190476190476) internal successors, (1150), 21 states have internal predecessors, (1150), 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) [2023-11-17 16:05:51,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:05:51,889 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:05:51,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2023-11-17 16:05:52,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2023-11-17 16:05:52,094 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:05:52,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:05:52,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1089971394, now seen corresponding path program 30 times [2023-11-17 16:05:52,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:05:52,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717710346] [2023-11-17 16:05:52,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:05:52,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:05:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:05:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:52,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:05:52,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717710346] [2023-11-17 16:05:52,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717710346] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:05:52,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102482387] [2023-11-17 16:05:52,657 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:05:52,657 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:05:52,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:05:52,658 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:05:52,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2023-11-17 16:05:52,813 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 16:05:52,814 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:05:52,815 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-17 16:05:52,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:05:53,030 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:05:53,030 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:06:20,610 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (+ (mod c_thread2Thread1of1ForFork1_~i~1 4294967296) 1)) (.cse3 (mod (+ c_thread2Thread1of1ForFork1_~i~1 1) 4294967296)) (.cse0 (* (div c_~x_2~0 4294967296) 4294967296))) (and (forall ((v_z_359 Int)) (let ((.cse1 (* 2 v_z_359))) (let ((.cse2 (* (div (+ c_~x_1~0 .cse1) 4294967296) 4294967296))) (or (< (+ c_~x_1~0 .cse0 .cse1 4294967293) (+ c_~x_2~0 .cse2)) (< .cse3 v_z_359) (< v_z_359 .cse4) (< (+ c_~x_2~0 .cse2 1) (+ c_~x_1~0 .cse0 .cse1)))))) (forall ((v_z_361 Int)) (or (let ((.cse5 (* 2 v_z_361))) (< (+ c_~x_2~0 (* 4294967296 (div (+ .cse5 c_~x_1~0) 4294967296))) (+ .cse5 c_~x_1~0 4294967295 .cse0))) (< .cse3 v_z_361) (< v_z_361 .cse4))) (forall ((v_z_358 Int)) (or (< v_z_358 .cse4) (< .cse3 v_z_358) (let ((.cse6 (* 2 v_z_358))) (< (+ .cse6 c_~x_1~0 .cse0) (+ c_~x_2~0 3 (* (div (+ .cse6 c_~x_1~0) 4294967296) 4294967296)))))))) is different from false [2023-11-17 16:06:20,693 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:20,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102482387] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:06:20,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:06:20,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 18 [2023-11-17 16:06:20,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903315547] [2023-11-17 16:06:20,693 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:06:20,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 16:06:20,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:06:20,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 16:06:20,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=265, Unknown=13, NotChecked=34, Total=380 [2023-11-17 16:06:20,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 145 [2023-11-17 16:06:20,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 561 transitions, 10405 flow. Second operand has 20 states, 20 states have (on average 54.8) internal successors, (1096), 20 states have internal predecessors, (1096), 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) [2023-11-17 16:06:20,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:06:20,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 145 [2023-11-17 16:06:20,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:06:31,196 INFO L124 PetriNetUnfolderBase]: 1200/2293 cut-off events. [2023-11-17 16:06:31,196 INFO L125 PetriNetUnfolderBase]: For 93843/93843 co-relation queries the response was YES. [2023-11-17 16:06:31,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23438 conditions, 2293 events. 1200/2293 cut-off events. For 93843/93843 co-relation queries the response was YES. Maximal size of possible extension queue 233. Compared 15141 event pairs, 255 based on Foata normal form. 2/2283 useless extension candidates. Maximal degree in co-relation 23272. Up to 2187 conditions per place. [2023-11-17 16:06:31,221 INFO L140 encePairwiseOnDemand]: 137/145 looper letters, 516 selfloop transitions, 69 changer transitions 7/592 dead transitions. [2023-11-17 16:06:31,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 508 places, 592 transitions, 12068 flow [2023-11-17 16:06:31,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-17 16:06:31,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-17 16:06:31,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1090 transitions. [2023-11-17 16:06:31,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3956442831215971 [2023-11-17 16:06:31,223 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1090 transitions. [2023-11-17 16:06:31,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1090 transitions. [2023-11-17 16:06:31,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:06:31,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1090 transitions. [2023-11-17 16:06:31,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 57.36842105263158) internal successors, (1090), 19 states have internal predecessors, (1090), 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) [2023-11-17 16:06:31,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 145.0) internal successors, (2900), 20 states have internal predecessors, (2900), 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) [2023-11-17 16:06:31,225 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 145.0) internal successors, (2900), 20 states have internal predecessors, (2900), 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) [2023-11-17 16:06:31,225 INFO L175 Difference]: Start difference. First operand has 492 places, 561 transitions, 10405 flow. Second operand 19 states and 1090 transitions. [2023-11-17 16:06:31,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 508 places, 592 transitions, 12068 flow [2023-11-17 16:06:31,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 592 transitions, 11305 flow, removed 293 selfloop flow, removed 21 redundant places. [2023-11-17 16:06:31,854 INFO L231 Difference]: Finished difference. Result has 492 places, 565 transitions, 9960 flow [2023-11-17 16:06:31,855 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=145, PETRI_DIFFERENCE_MINUEND_FLOW=9642, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=9960, PETRI_PLACES=492, PETRI_TRANSITIONS=565} [2023-11-17 16:06:31,855 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 472 predicate places. [2023-11-17 16:06:31,855 INFO L495 AbstractCegarLoop]: Abstraction has has 492 places, 565 transitions, 9960 flow [2023-11-17 16:06:31,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 54.8) internal successors, (1096), 20 states have internal predecessors, (1096), 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) [2023-11-17 16:06:31,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:06:31,855 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:06:31,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2023-11-17 16:06:32,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:06:32,056 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-17 16:06:32,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:06:32,056 INFO L85 PathProgramCache]: Analyzing trace with hash -675691096, now seen corresponding path program 11 times [2023-11-17 16:06:32,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:06:32,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692236088] [2023-11-17 16:06:32,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:06:32,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:06:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:06:32,228 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:32,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:06:32,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692236088] [2023-11-17 16:06:32,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692236088] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:06:32,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087302610] [2023-11-17 16:06:32,228 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:06:32,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:06:32,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:06:32,230 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 16:06:32,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2023-11-17 16:06:32,330 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 16:06:32,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:06:32,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-17 16:06:32,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:06:34,493 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:06:34,493 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:07:27,991 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~x_1~0 4294967296)) (.cse0 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_366 Int) (v_y_366 Int)) (or (< 4294967295 v_z_366) (< v_z_366 0) (= (+ .cse0 v_z_366) .cse1) (not (= (+ (* 2863311531 v_z_366) (* v_y_366 4294967296)) 0)))) (forall ((v_z_366 Int) (v_y_366 Int)) (let ((.cse2 (+ .cse0 v_z_366))) (or (< 4294967295 .cse2) (< v_z_366 0) (= .cse2 .cse1) (not (= (+ (* 2863311531 v_z_366) (* v_y_366 4294967296)) 0))))))) is different from false [2023-11-17 16:07:39,326 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:07:39,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087302610] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:07:39,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:07:39,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 18 [2023-11-17 16:07:39,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220261417] [2023-11-17 16:07:39,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:07:39,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 16:07:39,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:07:39,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 16:07:39,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=256, Unknown=15, NotChecked=34, Total=380 [2023-11-17 16:07:39,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 145 [2023-11-17 16:07:39,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 492 places, 565 transitions, 9960 flow. Second operand has 20 states, 20 states have (on average 57.2) internal successors, (1144), 20 states have internal predecessors, (1144), 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) [2023-11-17 16:07:39,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:07:39,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 145 [2023-11-17 16:07:39,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:07:41,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 16:07:43,377 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse1 (mod c_~x_1~0 4294967296)) (.cse0 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_366 Int) (v_y_366 Int)) (or (< 4294967295 v_z_366) (< v_z_366 0) (= (+ .cse0 v_z_366) .cse1) (not (= (+ (* 2863311531 v_z_366) (* v_y_366 4294967296)) 0)))) (= c_~x_2~0 0) (forall ((v_z_366 Int) (v_y_366 Int)) (let ((.cse2 (+ .cse0 v_z_366))) (or (< 4294967295 .cse2) (< v_z_366 0) (= .cse2 .cse1) (not (= (+ (* 2863311531 v_z_366) (* v_y_366 4294967296)) 0))))) (= c_~x_1~0 0))) is different from false [2023-11-17 16:07:45,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-17 16:07:47,426 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 16:07:49,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 16:07:51,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-17 16:07:53,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-17 16:07:55,535 WARN L854 $PredicateComparison]: unable to prove that (and (= c_~x_2~0 0) (or (< 4294967294 (mod c_thread2Thread1of1ForFork1_~i~1 4294967296)) (let ((.cse1 (mod c_~x_1~0 4294967296)) (.cse0 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_366 Int) (v_y_366 Int)) (or (< 4294967295 v_z_366) (< v_z_366 0) (= (+ .cse0 v_z_366) .cse1) (not (= (+ (* 2863311531 v_z_366) (* v_y_366 4294967296)) 0)))) (forall ((v_z_366 Int) (v_y_366 Int)) (let ((.cse2 (+ .cse0 v_z_366))) (or (< 4294967295 .cse2) (< v_z_366 0) (= .cse2 .cse1) (not (= (+ (* 2863311531 v_z_366) (* v_y_366 4294967296)) 0)))))))) (= c_thread2Thread1of1ForFork1_~i~1 0) (= c_~x_1~0 0)) is different from false [2023-11-17 16:07:57,612 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 16:07:59,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 16:08:01,646 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-17 16:08:03,664 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-17 16:08:05,732 WARN L854 $PredicateComparison]: unable to prove that (and (= c_~x_2~0 0) (= c_thread1Thread1of1ForFork0_~i~0 0) (or (let ((.cse2 (mod c_~x_1~0 4294967296))) (let ((.cse7 (+ .cse2 4294967296)) (.cse3 (mod c_thread1Thread1of1ForFork0_~i~0 4294967296)) (.cse4 (mod c_~x_2~0 4294967296))) (and (forall ((v_z_366 Int) (v_y_366 Int)) (let ((.cse1 (+ .cse4 v_z_366)) (.cse0 (+ (* 2863311531 v_z_366) (* v_y_366 4294967296)))) (or (< .cse0 0) (< 4294967295 .cse1) (< v_z_366 0) (= .cse1 .cse2) (< .cse3 .cse0)))) (forall ((v_z_366 Int) (v_y_366 Int)) (let ((.cse6 (+ .cse4 v_z_366)) (.cse5 (+ (* 2863311531 v_z_366) (* v_y_366 4294967296)))) (or (< 4294967295 v_z_366) (< .cse5 0) (= .cse6 .cse7) (< .cse6 4294967296) (< .cse3 .cse5)))) (forall ((v_z_366 Int) (v_y_366 Int)) (let ((.cse9 (+ .cse4 v_z_366)) (.cse8 (+ (* 2863311531 v_z_366) (* v_y_366 4294967296)))) (or (< 4294967295 v_z_366) (< .cse8 0) (= .cse9 .cse7) (< v_z_366 0) (= .cse9 .cse2) (< .cse3 .cse8))))))) (< 4294967294 (mod c_thread2Thread1of1ForFork1_~i~1 4294967296))) (= c_thread2Thread1of1ForFork1_~i~1 0) (= c_~x_1~0 0)) is different from false [2023-11-17 16:08:07,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-17 16:08:09,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-17 16:08:11,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [1] [2023-11-17 16:08:13,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-11-17 16:08:15,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] Received shutdown request... [2023-11-17 16:08:17,882 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 16:08:17,914 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 [2023-11-17 16:08:18,369 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 [1] [2023-11-17 16:08:18,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2023-11-17 16:08:19,114 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2023-11-17 16:08:19,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 [2023-11-17 16:08:19,133 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 16:08:19,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-11-17 16:08:19,134 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-11-17 16:08:19,135 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 16:08:19,135 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 16:08:19,135 INFO L445 BasicCegarLoop]: Path program histogram: [30, 11, 6, 1] [2023-11-17 16:08:19,138 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 16:08:19,138 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 16:08:19,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 04:08:19 BasicIcfg [2023-11-17 16:08:19,140 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 16:08:19,140 INFO L158 Benchmark]: Toolchain (without parser) took 551252.82ms. Allocated memory was 269.5MB in the beginning and 679.5MB in the end (delta: 410.0MB). Free memory was 219.8MB in the beginning and 296.5MB in the end (delta: -76.8MB). Peak memory consumption was 334.3MB. Max. memory is 8.0GB. [2023-11-17 16:08:19,140 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 176.2MB. Free memory is still 129.6MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 16:08:19,140 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.38ms. Allocated memory is still 269.5MB. Free memory was 219.3MB in the beginning and 208.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-11-17 16:08:19,140 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.08ms. Allocated memory is still 269.5MB. Free memory was 208.4MB in the beginning and 207.2MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 16:08:19,141 INFO L158 Benchmark]: Boogie Preprocessor took 27.56ms. Allocated memory is still 269.5MB. Free memory was 207.2MB in the beginning and 205.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:08:19,141 INFO L158 Benchmark]: RCFGBuilder took 309.04ms. Allocated memory is still 269.5MB. Free memory was 205.7MB in the beginning and 193.6MB in the end (delta: 12.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 16:08:19,141 INFO L158 Benchmark]: TraceAbstraction took 550666.47ms. Allocated memory was 269.5MB in the beginning and 679.5MB in the end (delta: 410.0MB). Free memory was 192.7MB in the beginning and 296.5MB in the end (delta: -103.8MB). Peak memory consumption was 307.0MB. Max. memory is 8.0GB. [2023-11-17 16:08:19,142 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 176.2MB. Free memory is still 129.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 211.38ms. Allocated memory is still 269.5MB. Free memory was 219.3MB in the beginning and 208.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 30.08ms. Allocated memory is still 269.5MB. Free memory was 208.4MB in the beginning and 207.2MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.56ms. Allocated memory is still 269.5MB. Free memory was 207.2MB in the beginning and 205.7MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 309.04ms. Allocated memory is still 269.5MB. Free memory was 205.7MB in the beginning and 193.6MB in the end (delta: 12.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 550666.47ms. Allocated memory was 269.5MB in the beginning and 679.5MB in the end (delta: 410.0MB). Free memory was 192.7MB in the beginning and 296.5MB in the end (delta: -103.8MB). Peak memory consumption was 307.0MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 73 PlacesBefore, 20 PlacesAfterwards, 71 TransitionsBefore, 15 TransitionsAfterwards, 648 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 4 ConcurrentYvCompositions, 3 ChoiceCompositions, 63 TotalNumberOfCompositions, 584 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 584, independent: 584, independent conditional: 0, independent unconditional: 584, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 439, independent: 439, independent conditional: 0, independent unconditional: 439, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 439, independent: 439, independent conditional: 0, independent unconditional: 439, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 584, independent: 145, independent conditional: 0, independent unconditional: 145, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 439, unknown conditional: 0, unknown unconditional: 439] , Statistics on independence cache: Total cache size (in pairs): 24, Positive cache size: 24, Positive conditional cache size: 0, Positive unconditional cache size: 24, 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: 70]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 102 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 550.6s, OverallIterations: 48, TraceHistogramMax: 3, PathProgramHistogramMax: 30, EmptinessCheckTime: 0.0s, AutomataDifference: 183.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 16 mSolverCounterUnknown, 2381 SdHoareTripleChecker+Valid, 83.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2381 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 80.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2070 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 718 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 21153 IncrementalHoareTripleChecker+Invalid, 23958 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 718 mSolverCounterUnsat, 0 mSDtfsCounter, 21153 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2045 GetRequests, 870 SyntacticMatches, 67 SemanticMatches, 1108 ConstructedPredicates, 31 IntricatePredicates, 0 DeprecatedPredicates, 7956 ImplicationChecksByTransitivity, 240.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10405occurred in iteration=46, InterpolantAutomatonStates: 912, 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: 0.4s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 349.4s InterpolantComputationTime, 1457 NumberOfCodeBlocks, 1457 NumberOfCodeBlocksAsserted, 145 NumberOfCheckSat, 2037 ConstructedInterpolants, 56 QuantifiedInterpolants, 45842 SizeOfPredicates, 172 NumberOfNonLiveVariables, 5819 ConjunctsInSsa, 931 ConjunctsInUnsatCore, 142 InterpolantComputations, 2 PerfectInterpolantSequences, 6/462 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown