/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/popl20-figure3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 16:14:04,089 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 16:14:04,152 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 16:14:04,173 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 16:14:04,173 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 16:14:04,174 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 16:14:04,174 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 16:14:04,174 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 16:14:04,175 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 16:14:04,178 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 16:14:04,178 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 16:14:04,178 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 16:14:04,179 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 16:14:04,179 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 16:14:04,180 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 16:14:04,180 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 16:14:04,180 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 16:14:04,180 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 16:14:04,180 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 16:14:04,180 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 16:14:04,181 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 16:14:04,181 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 16:14:04,181 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 16:14:04,181 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 16:14:04,182 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 16:14:04,182 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:14:04,182 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 16:14:04,182 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 16:14:04,182 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 16:14:04,182 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 16:14:04,183 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 16:14:04,183 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 16:14:04,183 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 16:14:04,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 16:14:04,392 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 16:14:04,394 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 16:14:04,394 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 16:14:04,394 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 16:14:04,395 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-figure3.wvr.c [2023-11-17 16:14:05,406 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 16:14:05,597 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 16:14:05,598 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-figure3.wvr.c [2023-11-17 16:14:05,604 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/770e868f8/93c69f3a538147cc999079f6f60817e5/FLAG2e3c3ccef [2023-11-17 16:14:05,618 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/770e868f8/93c69f3a538147cc999079f6f60817e5 [2023-11-17 16:14:05,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 16:14:05,621 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 16:14:05,623 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 16:14:05,623 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 16:14:05,626 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 16:14:05,627 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:14:05" (1/1) ... [2023-11-17 16:14:05,628 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a82adc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:05, skipping insertion in model container [2023-11-17 16:14:05,628 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 04:14:05" (1/1) ... [2023-11-17 16:14:05,648 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 16:14:05,779 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/popl20-figure3.wvr.c[2147,2160] [2023-11-17 16:14:05,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:14:05,790 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 16:14:05,812 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/popl20-figure3.wvr.c[2147,2160] [2023-11-17 16:14:05,818 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 16:14:05,825 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:14:05,825 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 16:14:05,830 INFO L206 MainTranslator]: Completed translation [2023-11-17 16:14:05,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:05 WrapperNode [2023-11-17 16:14:05,830 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 16:14:05,831 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 16:14:05,831 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 16:14:05,831 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 16:14:05,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:05" (1/1) ... [2023-11-17 16:14:05,842 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:05" (1/1) ... [2023-11-17 16:14:05,856 INFO L138 Inliner]: procedures = 21, calls = 25, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 75 [2023-11-17 16:14:05,857 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 16:14:05,858 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 16:14:05,858 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 16:14:05,858 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 16:14:05,867 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:05" (1/1) ... [2023-11-17 16:14:05,867 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:05" (1/1) ... [2023-11-17 16:14:05,876 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:05" (1/1) ... [2023-11-17 16:14:05,876 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:05" (1/1) ... [2023-11-17 16:14:05,879 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:05" (1/1) ... [2023-11-17 16:14:05,881 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:05" (1/1) ... [2023-11-17 16:14:05,882 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:05" (1/1) ... [2023-11-17 16:14:05,882 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:05" (1/1) ... [2023-11-17 16:14:05,885 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 16:14:05,886 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 16:14:05,886 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 16:14:05,886 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 16:14:05,886 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:05" (1/1) ... [2023-11-17 16:14:05,890 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 16:14:05,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:05,911 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 16:14:05,946 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 16:14:05,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 16:14:05,962 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 16:14:05,963 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 16:14:05,963 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 16:14:05,963 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 16:14:05,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 16:14:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 16:14:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 16:14:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 16:14:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 16:14:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 16:14:05,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 16:14:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 16:14:05,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 16:14:05,965 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 16:14:06,031 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 16:14:06,033 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 16:14:06,158 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 16:14:06,183 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 16:14:06,183 INFO L307 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-17 16:14:06,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:14:06 BoogieIcfgContainer [2023-11-17 16:14:06,185 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 16:14:06,186 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 16:14:06,186 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 16:14:06,193 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 16:14:06,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 04:14:05" (1/3) ... [2023-11-17 16:14:06,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2406b14f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:14:06, skipping insertion in model container [2023-11-17 16:14:06,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 04:14:05" (2/3) ... [2023-11-17 16:14:06,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2406b14f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 04:14:06, skipping insertion in model container [2023-11-17 16:14:06,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 04:14:06" (3/3) ... [2023-11-17 16:14:06,195 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-figure3.wvr.c [2023-11-17 16:14:06,207 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 16:14:06,207 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 16:14:06,207 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 16:14:06,258 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-17 16:14:06,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 89 transitions, 192 flow [2023-11-17 16:14:06,318 INFO L124 PetriNetUnfolderBase]: 6/87 cut-off events. [2023-11-17 16:14:06,318 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 16:14:06,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96 conditions, 87 events. 6/87 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 56 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-17 16:14:06,332 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 89 transitions, 192 flow [2023-11-17 16:14:06,336 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 79 places, 78 transitions, 168 flow [2023-11-17 16:14:06,343 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 16:14:06,356 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 79 places, 78 transitions, 168 flow [2023-11-17 16:14:06,363 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 79 places, 78 transitions, 168 flow [2023-11-17 16:14:06,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 79 places, 78 transitions, 168 flow [2023-11-17 16:14:06,390 INFO L124 PetriNetUnfolderBase]: 6/78 cut-off events. [2023-11-17 16:14:06,391 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 16:14:06,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 78 events. 6/78 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. 0/72 useless extension candidates. Maximal degree in co-relation 50. Up to 2 conditions per place. [2023-11-17 16:14:06,392 INFO L119 LiptonReduction]: Number of co-enabled transitions 648 [2023-11-17 16:14:07,986 INFO L134 LiptonReduction]: Checked pairs total: 647 [2023-11-17 16:14:07,986 INFO L136 LiptonReduction]: Total number of compositions: 72 [2023-11-17 16:14:07,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 16:14:08,001 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;@4754f7b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 16:14:08,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-17 16:14:08,004 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 16:14:08,004 INFO L124 PetriNetUnfolderBase]: 2/14 cut-off events. [2023-11-17 16:14:08,004 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-17 16:14:08,004 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:08,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:08,005 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 16:14:08,008 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:08,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1212107646, now seen corresponding path program 1 times [2023-11-17 16:14:08,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:08,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068759069] [2023-11-17 16:14:08,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:08,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:08,208 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 16:14:08,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:08,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068759069] [2023-11-17 16:14:08,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068759069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:14:08,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:14:08,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 16:14:08,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592801574] [2023-11-17 16:14:08,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:14:08,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 16:14:08,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:08,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 16:14:08,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 16:14:08,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 161 [2023-11-17 16:14:08,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 15 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 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 16:14:08,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:08,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 161 [2023-11-17 16:14:08,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:08,273 INFO L124 PetriNetUnfolderBase]: 60/116 cut-off events. [2023-11-17 16:14:08,274 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-17 16:14:08,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 116 events. 60/116 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 303 event pairs, 24 based on Foata normal form. 1/95 useless extension candidates. Maximal degree in co-relation 188. Up to 61 conditions per place. [2023-11-17 16:14:08,275 INFO L140 encePairwiseOnDemand]: 157/161 looper letters, 19 selfloop transitions, 2 changer transitions 4/25 dead transitions. [2023-11-17 16:14:08,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 25 transitions, 121 flow [2023-11-17 16:14:08,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 16:14:08,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 16:14:08,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 255 transitions. [2023-11-17 16:14:08,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279503105590062 [2023-11-17 16:14:08,287 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 255 transitions. [2023-11-17 16:14:08,287 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 255 transitions. [2023-11-17 16:14:08,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:08,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 255 transitions. [2023-11-17 16:14:08,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 0 states have call successors, (0), 0 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 16:14:08,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 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 16:14:08,300 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 161.0) internal successors, (644), 4 states have internal predecessors, (644), 0 states have call successors, (0), 0 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 16:14:08,301 INFO L175 Difference]: Start difference. First operand has 20 places, 15 transitions, 42 flow. Second operand 3 states and 255 transitions. [2023-11-17 16:14:08,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 25 transitions, 121 flow [2023-11-17 16:14:08,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 25 transitions, 107 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 16:14:08,305 INFO L231 Difference]: Finished difference. Result has 19 places, 16 transitions, 48 flow [2023-11-17 16:14:08,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, 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=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=19, PETRI_TRANSITIONS=16} [2023-11-17 16:14:08,309 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, -1 predicate places. [2023-11-17 16:14:08,310 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 16 transitions, 48 flow [2023-11-17 16:14:08,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.33333333333333) internal successors, (241), 3 states have internal predecessors, (241), 0 states have call successors, (0), 0 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 16:14:08,310 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:08,310 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:08,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 16:14:08,310 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 16:14:08,311 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:08,311 INFO L85 PathProgramCache]: Analyzing trace with hash 350671970, now seen corresponding path program 1 times [2023-11-17 16:14:08,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:08,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072911829] [2023-11-17 16:14:08,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:08,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:08,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:08,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:08,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:08,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072911829] [2023-11-17 16:14:08,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072911829] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:14:08,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:14:08,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:14:08,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079661927] [2023-11-17 16:14:08,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:14:08,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:14:08,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:08,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:14:08,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:14:08,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:14:08,439 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 16 transitions, 48 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 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 16:14:08,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:08,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:14:08,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:08,518 INFO L124 PetriNetUnfolderBase]: 66/126 cut-off events. [2023-11-17 16:14:08,518 INFO L125 PetriNetUnfolderBase]: For 17/17 co-relation queries the response was YES. [2023-11-17 16:14:08,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 126 events. 66/126 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 340 event pairs, 37 based on Foata normal form. 2/128 useless extension candidates. Maximal degree in co-relation 130. Up to 106 conditions per place. [2023-11-17 16:14:08,520 INFO L140 encePairwiseOnDemand]: 156/161 looper letters, 19 selfloop transitions, 4 changer transitions 5/28 dead transitions. [2023-11-17 16:14:08,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 28 transitions, 132 flow [2023-11-17 16:14:08,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:14:08,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:14:08,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 354 transitions. [2023-11-17 16:14:08,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43975155279503103 [2023-11-17 16:14:08,544 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 354 transitions. [2023-11-17 16:14:08,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 354 transitions. [2023-11-17 16:14:08,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:08,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 354 transitions. [2023-11-17 16:14:08,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.8) internal successors, (354), 5 states have internal predecessors, (354), 0 states have call successors, (0), 0 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 16:14:08,547 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 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 16:14:08,548 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 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 16:14:08,548 INFO L175 Difference]: Start difference. First operand has 19 places, 16 transitions, 48 flow. Second operand 5 states and 354 transitions. [2023-11-17 16:14:08,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 28 transitions, 132 flow [2023-11-17 16:14:08,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 28 transitions, 129 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 16:14:08,549 INFO L231 Difference]: Finished difference. Result has 25 places, 18 transitions, 75 flow [2023-11-17 16:14:08,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=75, PETRI_PLACES=25, PETRI_TRANSITIONS=18} [2023-11-17 16:14:08,549 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 5 predicate places. [2023-11-17 16:14:08,550 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 18 transitions, 75 flow [2023-11-17 16:14:08,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 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 16:14:08,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:08,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:08,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 16:14:08,553 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 16:14:08,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:08,556 INFO L85 PathProgramCache]: Analyzing trace with hash -5632642, now seen corresponding path program 2 times [2023-11-17 16:14:08,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:08,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562507315] [2023-11-17 16:14:08,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:08,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:08,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:08,691 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 16:14:08,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:08,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562507315] [2023-11-17 16:14:08,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562507315] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:08,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142790191] [2023-11-17 16:14:08,692 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:14:08,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:08,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:08,695 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 16:14:08,740 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 16:14:08,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:14:08,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:14:08,787 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 16:14:08,790 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:08,837 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 16:14:08,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:08,876 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:08,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142790191] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:08,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 16:14:08,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 6 [2023-11-17 16:14:08,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337759987] [2023-11-17 16:14:08,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:14:08,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 16:14:08,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:08,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 16:14:08,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-17 16:14:08,878 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 161 [2023-11-17 16:14:08,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 18 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 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 16:14:08,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:08,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 161 [2023-11-17 16:14:08,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:08,921 INFO L124 PetriNetUnfolderBase]: 56/105 cut-off events. [2023-11-17 16:14:08,921 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2023-11-17 16:14:08,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 336 conditions, 105 events. 56/105 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 263 event pairs, 10 based on Foata normal form. 6/111 useless extension candidates. Maximal degree in co-relation 197. Up to 62 conditions per place. [2023-11-17 16:14:08,922 INFO L140 encePairwiseOnDemand]: 157/161 looper letters, 25 selfloop transitions, 4 changer transitions 0/29 dead transitions. [2023-11-17 16:14:08,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 29 transitions, 171 flow [2023-11-17 16:14:08,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 16:14:08,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 16:14:08,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2023-11-17 16:14:08,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720496894409938 [2023-11-17 16:14:08,924 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 304 transitions. [2023-11-17 16:14:08,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 304 transitions. [2023-11-17 16:14:08,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:08,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 304 transitions. [2023-11-17 16:14:08,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 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 16:14:08,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 0 states have call successors, (0), 0 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 16:14:08,927 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 161.0) internal successors, (805), 5 states have internal predecessors, (805), 0 states have call successors, (0), 0 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 16:14:08,927 INFO L175 Difference]: Start difference. First operand has 25 places, 18 transitions, 75 flow. Second operand 4 states and 304 transitions. [2023-11-17 16:14:08,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 29 transitions, 171 flow [2023-11-17 16:14:08,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 29 transitions, 155 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-17 16:14:08,928 INFO L231 Difference]: Finished difference. Result has 26 places, 20 transitions, 89 flow [2023-11-17 16:14:08,928 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=89, PETRI_PLACES=26, PETRI_TRANSITIONS=20} [2023-11-17 16:14:08,929 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 6 predicate places. [2023-11-17 16:14:08,929 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 20 transitions, 89 flow [2023-11-17 16:14:08,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.5) internal successors, (290), 4 states have internal predecessors, (290), 0 states have call successors, (0), 0 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 16:14:08,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:08,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:08,944 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 16:14:09,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:09,134 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 16:14:09,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:09,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1459922320, now seen corresponding path program 3 times [2023-11-17 16:14:09,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:09,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702240454] [2023-11-17 16:14:09,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:09,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:09,195 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:09,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:09,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702240454] [2023-11-17 16:14:09,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702240454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:14:09,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:14:09,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:14:09,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165310397] [2023-11-17 16:14:09,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:14:09,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:14:09,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:09,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:14:09,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:14:09,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:14:09,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 20 transitions, 89 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 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 16:14:09,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:09,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:14:09,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:09,256 INFO L124 PetriNetUnfolderBase]: 69/126 cut-off events. [2023-11-17 16:14:09,257 INFO L125 PetriNetUnfolderBase]: For 125/125 co-relation queries the response was YES. [2023-11-17 16:14:09,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429 conditions, 126 events. 69/126 cut-off events. For 125/125 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 316 event pairs, 19 based on Foata normal form. 2/128 useless extension candidates. Maximal degree in co-relation 159. Up to 89 conditions per place. [2023-11-17 16:14:09,258 INFO L140 encePairwiseOnDemand]: 156/161 looper letters, 22 selfloop transitions, 8 changer transitions 2/32 dead transitions. [2023-11-17 16:14:09,258 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 32 transitions, 202 flow [2023-11-17 16:14:09,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:14:09,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:14:09,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 353 transitions. [2023-11-17 16:14:09,259 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43850931677018634 [2023-11-17 16:14:09,259 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 353 transitions. [2023-11-17 16:14:09,259 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 353 transitions. [2023-11-17 16:14:09,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:09,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 353 transitions. [2023-11-17 16:14:09,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 70.6) internal successors, (353), 5 states have internal predecessors, (353), 0 states have call successors, (0), 0 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 16:14:09,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 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 16:14:09,261 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 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 16:14:09,261 INFO L175 Difference]: Start difference. First operand has 26 places, 20 transitions, 89 flow. Second operand 5 states and 353 transitions. [2023-11-17 16:14:09,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 32 transitions, 202 flow [2023-11-17 16:14:09,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 32 transitions, 197 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 16:14:09,263 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 144 flow [2023-11-17 16:14:09,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=85, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=144, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-11-17 16:14:09,263 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 12 predicate places. [2023-11-17 16:14:09,264 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 144 flow [2023-11-17 16:14:09,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 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 16:14:09,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:09,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:09,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 16:14:09,264 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 16:14:09,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:09,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1308771928, now seen corresponding path program 4 times [2023-11-17 16:14:09,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:09,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833868191] [2023-11-17 16:14:09,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:09,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:09,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:09,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:09,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833868191] [2023-11-17 16:14:09,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833868191] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 16:14:09,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 16:14:09,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 16:14:09,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893325829] [2023-11-17 16:14:09,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 16:14:09,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 16:14:09,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:09,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 16:14:09,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 16:14:09,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:14:09,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 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 16:14:09,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:09,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:14:09,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:09,417 INFO L124 PetriNetUnfolderBase]: 66/129 cut-off events. [2023-11-17 16:14:09,417 INFO L125 PetriNetUnfolderBase]: For 272/272 co-relation queries the response was YES. [2023-11-17 16:14:09,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 518 conditions, 129 events. 66/129 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 332 event pairs, 21 based on Foata normal form. 4/133 useless extension candidates. Maximal degree in co-relation 230. Up to 75 conditions per place. [2023-11-17 16:14:09,419 INFO L140 encePairwiseOnDemand]: 156/161 looper letters, 29 selfloop transitions, 6 changer transitions 2/37 dead transitions. [2023-11-17 16:14:09,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 261 flow [2023-11-17 16:14:09,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:14:09,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:14:09,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 358 transitions. [2023-11-17 16:14:09,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44472049689440996 [2023-11-17 16:14:09,420 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 358 transitions. [2023-11-17 16:14:09,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 358 transitions. [2023-11-17 16:14:09,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:09,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 358 transitions. [2023-11-17 16:14:09,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.6) internal successors, (358), 5 states have internal predecessors, (358), 0 states have call successors, (0), 0 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 16:14:09,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 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 16:14:09,423 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 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 16:14:09,423 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 144 flow. Second operand 5 states and 358 transitions. [2023-11-17 16:14:09,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 261 flow [2023-11-17 16:14:09,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 37 transitions, 247 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-17 16:14:09,427 INFO L231 Difference]: Finished difference. Result has 35 places, 24 transitions, 149 flow [2023-11-17 16:14:09,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=35, PETRI_TRANSITIONS=24} [2023-11-17 16:14:09,429 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 15 predicate places. [2023-11-17 16:14:09,429 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 24 transitions, 149 flow [2023-11-17 16:14:09,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.8) internal successors, (339), 5 states have internal predecessors, (339), 0 states have call successors, (0), 0 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 16:14:09,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:09,429 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:09,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 16:14:09,429 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 16:14:09,430 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:09,430 INFO L85 PathProgramCache]: Analyzing trace with hash -961948964, now seen corresponding path program 5 times [2023-11-17 16:14:09,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:09,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307662363] [2023-11-17 16:14:09,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:09,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:09,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:09,502 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 16:14:09,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:09,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307662363] [2023-11-17 16:14:09,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307662363] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:09,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549930566] [2023-11-17 16:14:09,503 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:14:09,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:09,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:09,504 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 16:14:09,508 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 16:14:09,562 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:14:09,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:14:09,563 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 16:14:09,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:09,594 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 16:14:09,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:09,619 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 16:14:09,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549930566] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:09,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:09,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2023-11-17 16:14:09,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61588252] [2023-11-17 16:14:09,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:09,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 16:14:09,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:09,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 16:14:09,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 16:14:09,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:14:09,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 24 transitions, 149 flow. Second operand has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:14:09,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:09,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:14:09,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:09,746 INFO L124 PetriNetUnfolderBase]: 84/161 cut-off events. [2023-11-17 16:14:09,746 INFO L125 PetriNetUnfolderBase]: For 540/540 co-relation queries the response was YES. [2023-11-17 16:14:09,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 161 events. 84/161 cut-off events. For 540/540 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 466 event pairs, 28 based on Foata normal form. 6/167 useless extension candidates. Maximal degree in co-relation 348. Up to 116 conditions per place. [2023-11-17 16:14:09,748 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 33 selfloop transitions, 15 changer transitions 1/49 dead transitions. [2023-11-17 16:14:09,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 49 transitions, 364 flow [2023-11-17 16:14:09,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 16:14:09,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 16:14:09,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 565 transitions. [2023-11-17 16:14:09,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4386645962732919 [2023-11-17 16:14:09,749 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 565 transitions. [2023-11-17 16:14:09,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 565 transitions. [2023-11-17 16:14:09,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:09,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 565 transitions. [2023-11-17 16:14:09,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.625) internal successors, (565), 8 states have internal predecessors, (565), 0 states have call successors, (0), 0 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 16:14:09,752 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 161.0) internal successors, (1449), 9 states have internal predecessors, (1449), 0 states have call successors, (0), 0 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 16:14:09,752 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 161.0) internal successors, (1449), 9 states have internal predecessors, (1449), 0 states have call successors, (0), 0 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 16:14:09,752 INFO L175 Difference]: Start difference. First operand has 35 places, 24 transitions, 149 flow. Second operand 8 states and 565 transitions. [2023-11-17 16:14:09,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 49 transitions, 364 flow [2023-11-17 16:14:09,754 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 49 transitions, 342 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-17 16:14:09,754 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 239 flow [2023-11-17 16:14:09,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=239, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2023-11-17 16:14:09,755 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 21 predicate places. [2023-11-17 16:14:09,755 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 239 flow [2023-11-17 16:14:09,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.28571428571429) internal successors, (478), 7 states have internal predecessors, (478), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:14:09,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:09,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:09,771 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 16:14:09,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-17 16:14:09,961 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 16:14:09,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:09,961 INFO L85 PathProgramCache]: Analyzing trace with hash 2116877232, now seen corresponding path program 6 times [2023-11-17 16:14:09,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:09,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311437389] [2023-11-17 16:14:09,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:09,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:10,019 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 16:14:10,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:10,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311437389] [2023-11-17 16:14:10,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311437389] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:10,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454632751] [2023-11-17 16:14:10,019 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:14:10,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:10,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:10,021 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 16:14:10,047 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 16:14:10,072 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-17 16:14:10,072 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:14:10,073 INFO L262 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-17 16:14:10,074 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:10,097 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 16:14:10,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:10,126 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 16:14:10,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454632751] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:10,126 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:10,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2023-11-17 16:14:10,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189244995] [2023-11-17 16:14:10,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:10,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 16:14:10,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:10,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 16:14:10,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-17 16:14:10,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:14:10,129 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 239 flow. Second operand has 8 states, 8 states have (on average 67.5) internal successors, (540), 8 states have internal predecessors, (540), 0 states have call successors, (0), 0 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 16:14:10,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:10,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:14:10,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:10,191 INFO L124 PetriNetUnfolderBase]: 77/144 cut-off events. [2023-11-17 16:14:10,191 INFO L125 PetriNetUnfolderBase]: For 564/564 co-relation queries the response was YES. [2023-11-17 16:14:10,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 669 conditions, 144 events. 77/144 cut-off events. For 564/564 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 381 event pairs, 21 based on Foata normal form. 6/150 useless extension candidates. Maximal degree in co-relation 549. Up to 91 conditions per place. [2023-11-17 16:14:10,192 INFO L140 encePairwiseOnDemand]: 156/161 looper letters, 26 selfloop transitions, 13 changer transitions 0/39 dead transitions. [2023-11-17 16:14:10,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 39 transitions, 337 flow [2023-11-17 16:14:10,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:14:10,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:14:10,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 356 transitions. [2023-11-17 16:14:10,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4422360248447205 [2023-11-17 16:14:10,194 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 356 transitions. [2023-11-17 16:14:10,194 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 356 transitions. [2023-11-17 16:14:10,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:10,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 356 transitions. [2023-11-17 16:14:10,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 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 16:14:10,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 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 16:14:10,195 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 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 16:14:10,196 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 239 flow. Second operand 5 states and 356 transitions. [2023-11-17 16:14:10,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 39 transitions, 337 flow [2023-11-17 16:14:10,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 39 transitions, 310 flow, removed 10 selfloop flow, removed 3 redundant places. [2023-11-17 16:14:10,198 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 226 flow [2023-11-17 16:14:10,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=226, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2023-11-17 16:14:10,198 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 21 predicate places. [2023-11-17 16:14:10,198 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 226 flow [2023-11-17 16:14:10,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 67.5) internal successors, (540), 8 states have internal predecessors, (540), 0 states have call successors, (0), 0 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 16:14:10,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:10,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:10,206 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 16:14:10,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:10,405 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 16:14:10,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:10,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1343508673, now seen corresponding path program 1 times [2023-11-17 16:14:10,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:10,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582114805] [2023-11-17 16:14:10,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:10,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:10,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:10,489 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 16:14:10,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:10,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582114805] [2023-11-17 16:14:10,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582114805] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:10,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152712921] [2023-11-17 16:14:10,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:10,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:10,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:10,494 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 16:14:10,518 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 16:14:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:10,543 INFO L262 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:14:10,544 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:10,571 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 16:14:10,571 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:10,615 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 16:14:10,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152712921] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:10,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:10,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-17 16:14:10,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137088076] [2023-11-17 16:14:10,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:10,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 16:14:10,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:10,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 16:14:10,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-17 16:14:10,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 161 [2023-11-17 16:14:10,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 226 flow. Second operand has 8 states, 8 states have (on average 71.25) internal successors, (570), 8 states have internal predecessors, (570), 0 states have call successors, (0), 0 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 16:14:10,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:10,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 161 [2023-11-17 16:14:10,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:10,692 INFO L124 PetriNetUnfolderBase]: 142/268 cut-off events. [2023-11-17 16:14:10,692 INFO L125 PetriNetUnfolderBase]: For 931/931 co-relation queries the response was YES. [2023-11-17 16:14:10,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1215 conditions, 268 events. 142/268 cut-off events. For 931/931 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 961 event pairs, 17 based on Foata normal form. 7/275 useless extension candidates. Maximal degree in co-relation 989. Up to 130 conditions per place. [2023-11-17 16:14:10,695 INFO L140 encePairwiseOnDemand]: 156/161 looper letters, 41 selfloop transitions, 13 changer transitions 6/60 dead transitions. [2023-11-17 16:14:10,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 60 transitions, 513 flow [2023-11-17 16:14:10,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 16:14:10,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 16:14:10,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 379 transitions. [2023-11-17 16:14:10,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47080745341614905 [2023-11-17 16:14:10,696 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 379 transitions. [2023-11-17 16:14:10,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 379 transitions. [2023-11-17 16:14:10,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:10,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 379 transitions. [2023-11-17 16:14:10,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 75.8) internal successors, (379), 5 states have internal predecessors, (379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 16:14:10,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 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 16:14:10,698 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 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 16:14:10,698 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 226 flow. Second operand 5 states and 379 transitions. [2023-11-17 16:14:10,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 60 transitions, 513 flow [2023-11-17 16:14:10,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 60 transitions, 481 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 16:14:10,701 INFO L231 Difference]: Finished difference. Result has 44 places, 37 transitions, 320 flow [2023-11-17 16:14:10,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=320, PETRI_PLACES=44, PETRI_TRANSITIONS=37} [2023-11-17 16:14:10,702 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 24 predicate places. [2023-11-17 16:14:10,702 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 37 transitions, 320 flow [2023-11-17 16:14:10,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.25) internal successors, (570), 8 states have internal predecessors, (570), 0 states have call successors, (0), 0 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 16:14:10,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:10,703 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:10,722 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 16:14:10,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:10,908 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 16:14:10,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:10,908 INFO L85 PathProgramCache]: Analyzing trace with hash 593366887, now seen corresponding path program 2 times [2023-11-17 16:14:10,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:10,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314113386] [2023-11-17 16:14:10,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:10,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:11,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:11,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:11,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314113386] [2023-11-17 16:14:11,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314113386] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:11,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883003346] [2023-11-17 16:14:11,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:14:11,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:11,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:11,029 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 16:14:11,057 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 16:14:11,105 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:14:11,105 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:14:11,106 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:14:11,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:11,151 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:11,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:11,206 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:11,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883003346] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:11,206 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:11,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2023-11-17 16:14:11,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688712793] [2023-11-17 16:14:11,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:11,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 16:14:11,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:11,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 16:14:11,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2023-11-17 16:14:11,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:14:11,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 37 transitions, 320 flow. Second operand has 14 states, 14 states have (on average 67.07142857142857) internal successors, (939), 14 states have internal predecessors, (939), 0 states have call successors, (0), 0 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 16:14:11,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:11,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:14:11,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:11,587 INFO L124 PetriNetUnfolderBase]: 260/444 cut-off events. [2023-11-17 16:14:11,587 INFO L125 PetriNetUnfolderBase]: For 1573/1573 co-relation queries the response was YES. [2023-11-17 16:14:11,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2199 conditions, 444 events. 260/444 cut-off events. For 1573/1573 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1676 event pairs, 24 based on Foata normal form. 14/458 useless extension candidates. Maximal degree in co-relation 1429. Up to 183 conditions per place. [2023-11-17 16:14:11,590 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 55 selfloop transitions, 61 changer transitions 11/127 dead transitions. [2023-11-17 16:14:11,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 127 transitions, 1239 flow [2023-11-17 16:14:11,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-17 16:14:11,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-17 16:14:11,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1329 transitions. [2023-11-17 16:14:11,593 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4344557044785878 [2023-11-17 16:14:11,593 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1329 transitions. [2023-11-17 16:14:11,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1329 transitions. [2023-11-17 16:14:11,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:11,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1329 transitions. [2023-11-17 16:14:11,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 69.94736842105263) internal successors, (1329), 19 states have internal predecessors, (1329), 0 states have call successors, (0), 0 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 16:14:11,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 161.0) internal successors, (3220), 20 states have internal predecessors, (3220), 0 states have call successors, (0), 0 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 16:14:11,599 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 161.0) internal successors, (3220), 20 states have internal predecessors, (3220), 0 states have call successors, (0), 0 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 16:14:11,599 INFO L175 Difference]: Start difference. First operand has 44 places, 37 transitions, 320 flow. Second operand 19 states and 1329 transitions. [2023-11-17 16:14:11,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 127 transitions, 1239 flow [2023-11-17 16:14:11,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 127 transitions, 1198 flow, removed 18 selfloop flow, removed 1 redundant places. [2023-11-17 16:14:11,605 INFO L231 Difference]: Finished difference. Result has 67 places, 82 transitions, 923 flow [2023-11-17 16:14:11,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=303, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=923, PETRI_PLACES=67, PETRI_TRANSITIONS=82} [2023-11-17 16:14:11,606 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 47 predicate places. [2023-11-17 16:14:11,607 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 82 transitions, 923 flow [2023-11-17 16:14:11,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 67.07142857142857) internal successors, (939), 14 states have internal predecessors, (939), 0 states have call successors, (0), 0 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 16:14:11,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:11,607 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:11,625 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-17 16:14:11,812 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:11,812 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 16:14:11,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:11,812 INFO L85 PathProgramCache]: Analyzing trace with hash -862301143, now seen corresponding path program 3 times [2023-11-17 16:14:11,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:11,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281957957] [2023-11-17 16:14:11,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:11,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:11,917 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:11,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:11,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281957957] [2023-11-17 16:14:11,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281957957] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:11,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804882711] [2023-11-17 16:14:11,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:14:11,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:11,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:11,919 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 16:14:11,961 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 16:14:12,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 16:14:12,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:14:12,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:14:12,030 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:12,093 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 16:14:12,094 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:12,163 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 16:14:12,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804882711] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:12,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:12,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2023-11-17 16:14:12,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323522868] [2023-11-17 16:14:12,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:12,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-17 16:14:12,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:12,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-17 16:14:12,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-17 16:14:12,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:14:12,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 82 transitions, 923 flow. Second operand has 12 states, 12 states have (on average 67.5) internal successors, (810), 12 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 16:14:12,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:12,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:14:12,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:12,539 INFO L124 PetriNetUnfolderBase]: 256/432 cut-off events. [2023-11-17 16:14:12,539 INFO L125 PetriNetUnfolderBase]: For 2462/2462 co-relation queries the response was YES. [2023-11-17 16:14:12,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2617 conditions, 432 events. 256/432 cut-off events. For 2462/2462 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1547 event pairs, 7 based on Foata normal form. 10/442 useless extension candidates. Maximal degree in co-relation 1807. Up to 175 conditions per place. [2023-11-17 16:14:12,542 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 79 selfloop transitions, 50 changer transitions 1/130 dead transitions. [2023-11-17 16:14:12,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 130 transitions, 1540 flow [2023-11-17 16:14:12,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-17 16:14:12,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-17 16:14:12,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 917 transitions. [2023-11-17 16:14:12,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43812709030100333 [2023-11-17 16:14:12,544 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 917 transitions. [2023-11-17 16:14:12,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 917 transitions. [2023-11-17 16:14:12,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:12,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 917 transitions. [2023-11-17 16:14:12,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 70.53846153846153) internal successors, (917), 13 states have internal predecessors, (917), 0 states have call successors, (0), 0 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 16:14:12,548 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 161.0) internal successors, (2254), 14 states have internal predecessors, (2254), 0 states have call successors, (0), 0 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 16:14:12,548 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 161.0) internal successors, (2254), 14 states have internal predecessors, (2254), 0 states have call successors, (0), 0 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 16:14:12,548 INFO L175 Difference]: Start difference. First operand has 67 places, 82 transitions, 923 flow. Second operand 13 states and 917 transitions. [2023-11-17 16:14:12,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 130 transitions, 1540 flow [2023-11-17 16:14:12,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 130 transitions, 1214 flow, removed 157 selfloop flow, removed 3 redundant places. [2023-11-17 16:14:12,558 INFO L231 Difference]: Finished difference. Result has 80 places, 93 transitions, 900 flow [2023-11-17 16:14:12,558 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=900, PETRI_PLACES=80, PETRI_TRANSITIONS=93} [2023-11-17 16:14:12,559 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 60 predicate places. [2023-11-17 16:14:12,559 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 93 transitions, 900 flow [2023-11-17 16:14:12,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 67.5) internal successors, (810), 12 states have internal predecessors, (810), 0 states have call successors, (0), 0 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 16:14:12,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:12,559 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:12,579 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 16:14:12,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:12,765 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 16:14:12,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:12,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1798633015, now seen corresponding path program 4 times [2023-11-17 16:14:12,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:12,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481897595] [2023-11-17 16:14:12,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:12,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:12,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:12,861 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:12,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:12,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481897595] [2023-11-17 16:14:12,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481897595] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:12,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248011713] [2023-11-17 16:14:12,861 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:14:12,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:12,862 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:12,881 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 16:14:12,908 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 16:14:12,930 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:14:12,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:14:12,931 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:14:12,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:12,971 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:12,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:13,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:13,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248011713] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:13,021 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:13,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2023-11-17 16:14:13,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961279679] [2023-11-17 16:14:13,022 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:13,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 16:14:13,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:13,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 16:14:13,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2023-11-17 16:14:13,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:14:13,024 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 93 transitions, 900 flow. Second operand has 15 states, 15 states have (on average 66.86666666666666) internal successors, (1003), 15 states have internal predecessors, (1003), 0 states have call successors, (0), 0 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 16:14:13,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:13,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:14:13,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:13,405 INFO L124 PetriNetUnfolderBase]: 268/462 cut-off events. [2023-11-17 16:14:13,405 INFO L125 PetriNetUnfolderBase]: For 3514/3514 co-relation queries the response was YES. [2023-11-17 16:14:13,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2510 conditions, 462 events. 268/462 cut-off events. For 3514/3514 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1742 event pairs, 17 based on Foata normal form. 24/486 useless extension candidates. Maximal degree in co-relation 2294. Up to 164 conditions per place. [2023-11-17 16:14:13,408 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 67 selfloop transitions, 74 changer transitions 4/145 dead transitions. [2023-11-17 16:14:13,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 145 transitions, 1498 flow [2023-11-17 16:14:13,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-17 16:14:13,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-17 16:14:13,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1606 transitions. [2023-11-17 16:14:13,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4337024034566568 [2023-11-17 16:14:13,411 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1606 transitions. [2023-11-17 16:14:13,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1606 transitions. [2023-11-17 16:14:13,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:13,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1606 transitions. [2023-11-17 16:14:13,414 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 69.82608695652173) internal successors, (1606), 23 states have internal predecessors, (1606), 0 states have call successors, (0), 0 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 16:14:13,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 161.0) internal successors, (3864), 24 states have internal predecessors, (3864), 0 states have call successors, (0), 0 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 16:14:13,418 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 161.0) internal successors, (3864), 24 states have internal predecessors, (3864), 0 states have call successors, (0), 0 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 16:14:13,418 INFO L175 Difference]: Start difference. First operand has 80 places, 93 transitions, 900 flow. Second operand 23 states and 1606 transitions. [2023-11-17 16:14:13,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 145 transitions, 1498 flow [2023-11-17 16:14:13,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 145 transitions, 1435 flow, removed 24 selfloop flow, removed 3 redundant places. [2023-11-17 16:14:13,427 INFO L231 Difference]: Finished difference. Result has 101 places, 95 transitions, 1056 flow [2023-11-17 16:14:13,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1056, PETRI_PLACES=101, PETRI_TRANSITIONS=95} [2023-11-17 16:14:13,428 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 81 predicate places. [2023-11-17 16:14:13,428 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 95 transitions, 1056 flow [2023-11-17 16:14:13,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 66.86666666666666) internal successors, (1003), 15 states have internal predecessors, (1003), 0 states have call successors, (0), 0 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 16:14:13,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:13,428 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:13,435 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 16:14:13,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:13,633 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 16:14:13,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:13,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1369480895, now seen corresponding path program 5 times [2023-11-17 16:14:13,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:13,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676088685] [2023-11-17 16:14:13,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:13,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:13,732 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:13,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:13,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676088685] [2023-11-17 16:14:13,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676088685] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:13,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506652313] [2023-11-17 16:14:13,733 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:14:13,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:13,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:13,750 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 16:14:13,781 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 16:14:13,837 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:14:13,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:14:13,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:14:13,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:13,892 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 16:14:13,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:13,954 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 16:14:13,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506652313] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:13,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:13,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2023-11-17 16:14:13,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307907117] [2023-11-17 16:14:13,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:13,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 16:14:13,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:13,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 16:14:13,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-17 16:14:13,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:14:13,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 95 transitions, 1056 flow. Second operand has 14 states, 14 states have (on average 67.57142857142857) internal successors, (946), 14 states have internal predecessors, (946), 0 states have call successors, (0), 0 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 16:14:13,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:13,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:14:13,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:14,342 INFO L124 PetriNetUnfolderBase]: 328/568 cut-off events. [2023-11-17 16:14:14,342 INFO L125 PetriNetUnfolderBase]: For 4468/4468 co-relation queries the response was YES. [2023-11-17 16:14:14,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3334 conditions, 568 events. 328/568 cut-off events. For 4468/4468 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2293 event pairs, 27 based on Foata normal form. 14/582 useless extension candidates. Maximal degree in co-relation 3104. Up to 216 conditions per place. [2023-11-17 16:14:14,346 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 92 selfloop transitions, 79 changer transitions 1/172 dead transitions. [2023-11-17 16:14:14,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 172 transitions, 1996 flow [2023-11-17 16:14:14,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-17 16:14:14,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-17 16:14:14,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1401 transitions. [2023-11-17 16:14:14,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43509316770186335 [2023-11-17 16:14:14,350 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1401 transitions. [2023-11-17 16:14:14,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1401 transitions. [2023-11-17 16:14:14,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:14,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1401 transitions. [2023-11-17 16:14:14,353 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 70.05) internal successors, (1401), 20 states have internal predecessors, (1401), 0 states have call successors, (0), 0 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 16:14:14,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 161.0) internal successors, (3381), 21 states have internal predecessors, (3381), 0 states have call successors, (0), 0 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 16:14:14,357 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 161.0) internal successors, (3381), 21 states have internal predecessors, (3381), 0 states have call successors, (0), 0 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 16:14:14,357 INFO L175 Difference]: Start difference. First operand has 101 places, 95 transitions, 1056 flow. Second operand 20 states and 1401 transitions. [2023-11-17 16:14:14,357 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 172 transitions, 1996 flow [2023-11-17 16:14:14,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 172 transitions, 1708 flow, removed 48 selfloop flow, removed 17 redundant places. [2023-11-17 16:14:14,374 INFO L231 Difference]: Finished difference. Result has 109 places, 125 transitions, 1330 flow [2023-11-17 16:14:14,374 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=841, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1330, PETRI_PLACES=109, PETRI_TRANSITIONS=125} [2023-11-17 16:14:14,374 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 89 predicate places. [2023-11-17 16:14:14,374 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 125 transitions, 1330 flow [2023-11-17 16:14:14,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 67.57142857142857) internal successors, (946), 14 states have internal predecessors, (946), 0 states have call successors, (0), 0 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 16:14:14,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:14,375 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:14,401 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-17 16:14:14,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-17 16:14:14,602 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 16:14:14,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:14,602 INFO L85 PathProgramCache]: Analyzing trace with hash 2107278873, now seen corresponding path program 6 times [2023-11-17 16:14:14,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:14,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564550727] [2023-11-17 16:14:14,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:14,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:14,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:14,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:14,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564550727] [2023-11-17 16:14:14,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564550727] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:14,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356295119] [2023-11-17 16:14:14,702 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:14:14,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:14,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:14,703 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 16:14:14,746 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 16:14:14,772 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-11-17 16:14:14,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:14:14,772 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:14:14,774 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:14,823 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 16:14:14,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:14,881 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 16:14:14,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356295119] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:14,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:14,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2023-11-17 16:14:14,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678187103] [2023-11-17 16:14:14,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:14,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 16:14:14,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:14,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 16:14:14,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2023-11-17 16:14:14,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:14:14,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 125 transitions, 1330 flow. Second operand has 15 states, 15 states have (on average 67.2) internal successors, (1008), 15 states have internal predecessors, (1008), 0 states have call successors, (0), 0 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 16:14:14,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:14,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:14:14,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:15,370 INFO L124 PetriNetUnfolderBase]: 509/871 cut-off events. [2023-11-17 16:14:15,371 INFO L125 PetriNetUnfolderBase]: For 10277/10277 co-relation queries the response was YES. [2023-11-17 16:14:15,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5195 conditions, 871 events. 509/871 cut-off events. For 10277/10277 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3895 event pairs, 72 based on Foata normal form. 36/907 useless extension candidates. Maximal degree in co-relation 4946. Up to 505 conditions per place. [2023-11-17 16:14:15,378 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 152 selfloop transitions, 113 changer transitions 3/268 dead transitions. [2023-11-17 16:14:15,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 268 transitions, 3208 flow [2023-11-17 16:14:15,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-17 16:14:15,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-17 16:14:15,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1682 transitions. [2023-11-17 16:14:15,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4353002070393375 [2023-11-17 16:14:15,383 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 1682 transitions. [2023-11-17 16:14:15,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 1682 transitions. [2023-11-17 16:14:15,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:15,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 1682 transitions. [2023-11-17 16:14:15,390 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 70.08333333333333) internal successors, (1682), 24 states have internal predecessors, (1682), 0 states have call successors, (0), 0 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 16:14:15,394 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 161.0) internal successors, (4025), 25 states have internal predecessors, (4025), 0 states have call successors, (0), 0 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 16:14:15,395 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 161.0) internal successors, (4025), 25 states have internal predecessors, (4025), 0 states have call successors, (0), 0 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 16:14:15,395 INFO L175 Difference]: Start difference. First operand has 109 places, 125 transitions, 1330 flow. Second operand 24 states and 1682 transitions. [2023-11-17 16:14:15,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 268 transitions, 3208 flow [2023-11-17 16:14:15,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 268 transitions, 2970 flow, removed 62 selfloop flow, removed 9 redundant places. [2023-11-17 16:14:15,423 INFO L231 Difference]: Finished difference. Result has 133 places, 193 transitions, 2473 flow [2023-11-17 16:14:15,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=1167, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2473, PETRI_PLACES=133, PETRI_TRANSITIONS=193} [2023-11-17 16:14:15,424 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 113 predicate places. [2023-11-17 16:14:15,424 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 193 transitions, 2473 flow [2023-11-17 16:14:15,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 67.2) internal successors, (1008), 15 states have internal predecessors, (1008), 0 states have call successors, (0), 0 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 16:14:15,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:15,425 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:15,448 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 16:14:15,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-17 16:14:15,630 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 16:14:15,630 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:15,630 INFO L85 PathProgramCache]: Analyzing trace with hash 497206977, now seen corresponding path program 7 times [2023-11-17 16:14:15,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:15,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542138660] [2023-11-17 16:14:15,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:15,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:15,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:15,767 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:15,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:15,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542138660] [2023-11-17 16:14:15,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542138660] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:15,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1511679168] [2023-11-17 16:14:15,767 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:14:15,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:15,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:15,794 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 16:14:15,808 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 16:14:15,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:15,854 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:14:15,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:15,890 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:15,890 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:15,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:15,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1511679168] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:15,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:15,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 15 [2023-11-17 16:14:15,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375879749] [2023-11-17 16:14:15,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:15,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 16:14:15,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:15,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 16:14:15,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2023-11-17 16:14:15,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:14:15,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 193 transitions, 2473 flow. Second operand has 15 states, 15 states have (on average 66.8) internal successors, (1002), 15 states have internal predecessors, (1002), 0 states have call successors, (0), 0 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 16:14:15,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:15,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:14:15,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:16,265 INFO L124 PetriNetUnfolderBase]: 557/965 cut-off events. [2023-11-17 16:14:16,265 INFO L125 PetriNetUnfolderBase]: For 12380/12380 co-relation queries the response was YES. [2023-11-17 16:14:16,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6325 conditions, 965 events. 557/965 cut-off events. For 12380/12380 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4509 event pairs, 63 based on Foata normal form. 24/989 useless extension candidates. Maximal degree in co-relation 6136. Up to 518 conditions per place. [2023-11-17 16:14:16,272 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 102 selfloop transitions, 144 changer transitions 4/250 dead transitions. [2023-11-17 16:14:16,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 250 transitions, 3598 flow [2023-11-17 16:14:16,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 16:14:16,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 16:14:16,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1117 transitions. [2023-11-17 16:14:16,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43361801242236025 [2023-11-17 16:14:16,273 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1117 transitions. [2023-11-17 16:14:16,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1117 transitions. [2023-11-17 16:14:16,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:16,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1117 transitions. [2023-11-17 16:14:16,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 69.8125) internal successors, (1117), 16 states have internal predecessors, (1117), 0 states have call successors, (0), 0 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 16:14:16,277 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 161.0) internal successors, (2737), 17 states have internal predecessors, (2737), 0 states have call successors, (0), 0 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 16:14:16,277 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 161.0) internal successors, (2737), 17 states have internal predecessors, (2737), 0 states have call successors, (0), 0 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 16:14:16,277 INFO L175 Difference]: Start difference. First operand has 133 places, 193 transitions, 2473 flow. Second operand 16 states and 1117 transitions. [2023-11-17 16:14:16,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 250 transitions, 3598 flow [2023-11-17 16:14:16,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 250 transitions, 3000 flow, removed 272 selfloop flow, removed 8 redundant places. [2023-11-17 16:14:16,313 INFO L231 Difference]: Finished difference. Result has 143 places, 218 transitions, 2838 flow [2023-11-17 16:14:16,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=1944, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2838, PETRI_PLACES=143, PETRI_TRANSITIONS=218} [2023-11-17 16:14:16,313 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 123 predicate places. [2023-11-17 16:14:16,313 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 218 transitions, 2838 flow [2023-11-17 16:14:16,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 66.8) internal successors, (1002), 15 states have internal predecessors, (1002), 0 states have call successors, (0), 0 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 16:14:16,314 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:16,314 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:16,341 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-11-17 16:14:16,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-17 16:14:16,525 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 16:14:16,525 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:16,525 INFO L85 PathProgramCache]: Analyzing trace with hash -2078821967, now seen corresponding path program 8 times [2023-11-17 16:14:16,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:16,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573547298] [2023-11-17 16:14:16,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:16,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:16,612 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:16,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:16,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573547298] [2023-11-17 16:14:16,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573547298] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:16,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553837683] [2023-11-17 16:14:16,613 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:14:16,613 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:16,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:16,614 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 16:14:16,628 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 16:14:16,680 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:14:16,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:14:16,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-17 16:14:16,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:16,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:16,717 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:16,774 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:16,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553837683] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:16,774 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:16,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2023-11-17 16:14:16,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272946243] [2023-11-17 16:14:16,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:16,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 16:14:16,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:16,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 16:14:16,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-17 16:14:16,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:14:16,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 218 transitions, 2838 flow. Second operand has 14 states, 14 states have (on average 66.85714285714286) internal successors, (936), 14 states have internal predecessors, (936), 0 states have call successors, (0), 0 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 16:14:16,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:16,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:14:16,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:17,101 INFO L124 PetriNetUnfolderBase]: 538/938 cut-off events. [2023-11-17 16:14:17,101 INFO L125 PetriNetUnfolderBase]: For 6868/6868 co-relation queries the response was YES. [2023-11-17 16:14:17,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6176 conditions, 938 events. 538/938 cut-off events. For 6868/6868 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4391 event pairs, 84 based on Foata normal form. 8/946 useless extension candidates. Maximal degree in co-relation 6017. Up to 597 conditions per place. [2023-11-17 16:14:17,107 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 108 selfloop transitions, 123 changer transitions 4/235 dead transitions. [2023-11-17 16:14:17,107 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 235 transitions, 3364 flow [2023-11-17 16:14:17,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-17 16:14:17,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-17 16:14:17,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 970 transitions. [2023-11-17 16:14:17,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4303460514640639 [2023-11-17 16:14:17,109 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 970 transitions. [2023-11-17 16:14:17,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 970 transitions. [2023-11-17 16:14:17,109 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:17,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 970 transitions. [2023-11-17 16:14:17,110 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 69.28571428571429) internal successors, (970), 14 states have internal predecessors, (970), 0 states have call successors, (0), 0 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 16:14:17,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 161.0) internal successors, (2415), 15 states have internal predecessors, (2415), 0 states have call successors, (0), 0 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 16:14:17,113 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 161.0) internal successors, (2415), 15 states have internal predecessors, (2415), 0 states have call successors, (0), 0 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 16:14:17,113 INFO L175 Difference]: Start difference. First operand has 143 places, 218 transitions, 2838 flow. Second operand 14 states and 970 transitions. [2023-11-17 16:14:17,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 235 transitions, 3364 flow [2023-11-17 16:14:17,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 235 transitions, 3098 flow, removed 98 selfloop flow, removed 6 redundant places. [2023-11-17 16:14:17,154 INFO L231 Difference]: Finished difference. Result has 151 places, 214 transitions, 2798 flow [2023-11-17 16:14:17,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=2529, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2798, PETRI_PLACES=151, PETRI_TRANSITIONS=214} [2023-11-17 16:14:17,155 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 131 predicate places. [2023-11-17 16:14:17,156 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 214 transitions, 2798 flow [2023-11-17 16:14:17,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 66.85714285714286) internal successors, (936), 14 states have internal predecessors, (936), 0 states have call successors, (0), 0 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 16:14:17,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:17,156 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:17,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-17 16:14:17,360 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,SelfDestructingSolverStorable14 [2023-11-17 16:14:17,361 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 16:14:17,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:17,361 INFO L85 PathProgramCache]: Analyzing trace with hash -876067036, now seen corresponding path program 9 times [2023-11-17 16:14:17,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:17,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441160722] [2023-11-17 16:14:17,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:17,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:17,449 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 16:14:17,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:17,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441160722] [2023-11-17 16:14:17,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441160722] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:17,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542353883] [2023-11-17 16:14:17,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:14:17,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:17,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:17,466 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 16:14:17,492 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 16:14:17,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 16:14:17,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:14:17,527 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-17 16:14:17,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:17,606 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 16:14:17,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:17,732 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 16:14:17,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542353883] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:17,732 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:17,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2023-11-17 16:14:17,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652641817] [2023-11-17 16:14:17,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:17,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 16:14:17,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:17,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 16:14:17,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2023-11-17 16:14:17,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 161 [2023-11-17 16:14:17,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 214 transitions, 2798 flow. Second operand has 16 states, 16 states have (on average 65.6875) internal successors, (1051), 16 states have internal predecessors, (1051), 0 states have call successors, (0), 0 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 16:14:17,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:17,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 161 [2023-11-17 16:14:17,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:17,997 INFO L124 PetriNetUnfolderBase]: 708/1257 cut-off events. [2023-11-17 16:14:17,997 INFO L125 PetriNetUnfolderBase]: For 10278/10278 co-relation queries the response was YES. [2023-11-17 16:14:18,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8336 conditions, 1257 events. 708/1257 cut-off events. For 10278/10278 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 6515 event pairs, 37 based on Foata normal form. 11/1266 useless extension candidates. Maximal degree in co-relation 8046. Up to 675 conditions per place. [2023-11-17 16:14:18,021 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 189 selfloop transitions, 91 changer transitions 43/323 dead transitions. [2023-11-17 16:14:18,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 323 transitions, 4708 flow [2023-11-17 16:14:18,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 16:14:18,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 16:14:18,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 705 transitions. [2023-11-17 16:14:18,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43788819875776397 [2023-11-17 16:14:18,022 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 705 transitions. [2023-11-17 16:14:18,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 705 transitions. [2023-11-17 16:14:18,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:18,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 705 transitions. [2023-11-17 16:14:18,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 70.5) internal successors, (705), 10 states have internal predecessors, (705), 0 states have call successors, (0), 0 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 16:14:18,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 161.0) internal successors, (1771), 11 states have internal predecessors, (1771), 0 states have call successors, (0), 0 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 16:14:18,025 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 161.0) internal successors, (1771), 11 states have internal predecessors, (1771), 0 states have call successors, (0), 0 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 16:14:18,025 INFO L175 Difference]: Start difference. First operand has 151 places, 214 transitions, 2798 flow. Second operand 10 states and 705 transitions. [2023-11-17 16:14:18,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 323 transitions, 4708 flow [2023-11-17 16:14:18,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 323 transitions, 4312 flow, removed 28 selfloop flow, removed 12 redundant places. [2023-11-17 16:14:18,104 INFO L231 Difference]: Finished difference. Result has 150 places, 235 transitions, 3166 flow [2023-11-17 16:14:18,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=2499, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3166, PETRI_PLACES=150, PETRI_TRANSITIONS=235} [2023-11-17 16:14:18,105 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 130 predicate places. [2023-11-17 16:14:18,105 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 235 transitions, 3166 flow [2023-11-17 16:14:18,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 65.6875) internal successors, (1051), 16 states have internal predecessors, (1051), 0 states have call successors, (0), 0 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 16:14:18,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:18,106 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:18,112 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 16:14:18,306 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,SelfDestructingSolverStorable15 [2023-11-17 16:14:18,306 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 16:14:18,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:18,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1989714274, now seen corresponding path program 10 times [2023-11-17 16:14:18,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:18,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590281111] [2023-11-17 16:14:18,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:18,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:18,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:18,404 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:18,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:18,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590281111] [2023-11-17 16:14:18,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590281111] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:18,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328306618] [2023-11-17 16:14:18,404 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:14:18,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:18,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:18,422 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 16:14:18,447 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 16:14:18,472 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:14:18,473 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:14:18,473 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:14:18,474 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:18,530 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:18,530 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:18,608 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:18,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328306618] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:18,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:18,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 15 [2023-11-17 16:14:18,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452715340] [2023-11-17 16:14:18,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:18,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-17 16:14:18,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:18,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-17 16:14:18,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-11-17 16:14:18,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:14:18,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 235 transitions, 3166 flow. Second operand has 15 states, 15 states have (on average 67.0) internal successors, (1005), 15 states have internal predecessors, (1005), 0 states have call successors, (0), 0 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 16:14:18,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:18,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:14:18,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:19,197 INFO L124 PetriNetUnfolderBase]: 1195/1986 cut-off events. [2023-11-17 16:14:19,197 INFO L125 PetriNetUnfolderBase]: For 16812/16812 co-relation queries the response was YES. [2023-11-17 16:14:19,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13923 conditions, 1986 events. 1195/1986 cut-off events. For 16812/16812 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 10408 event pairs, 9 based on Foata normal form. 16/2002 useless extension candidates. Maximal degree in co-relation 13645. Up to 766 conditions per place. [2023-11-17 16:14:19,213 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 275 selfloop transitions, 226 changer transitions 6/507 dead transitions. [2023-11-17 16:14:19,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 507 transitions, 7685 flow [2023-11-17 16:14:19,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-17 16:14:19,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-11-17 16:14:19,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1476 transitions. [2023-11-17 16:14:19,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43655723158828746 [2023-11-17 16:14:19,215 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1476 transitions. [2023-11-17 16:14:19,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1476 transitions. [2023-11-17 16:14:19,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:19,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1476 transitions. [2023-11-17 16:14:19,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 70.28571428571429) internal successors, (1476), 21 states have internal predecessors, (1476), 0 states have call successors, (0), 0 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 16:14:19,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 161.0) internal successors, (3542), 22 states have internal predecessors, (3542), 0 states have call successors, (0), 0 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 16:14:19,220 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 161.0) internal successors, (3542), 22 states have internal predecessors, (3542), 0 states have call successors, (0), 0 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 16:14:19,220 INFO L175 Difference]: Start difference. First operand has 150 places, 235 transitions, 3166 flow. Second operand 21 states and 1476 transitions. [2023-11-17 16:14:19,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 507 transitions, 7685 flow [2023-11-17 16:14:19,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 507 transitions, 7547 flow, removed 57 selfloop flow, removed 4 redundant places. [2023-11-17 16:14:19,316 INFO L231 Difference]: Finished difference. Result has 177 places, 393 transitions, 6068 flow [2023-11-17 16:14:19,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=3088, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=6068, PETRI_PLACES=177, PETRI_TRANSITIONS=393} [2023-11-17 16:14:19,316 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 157 predicate places. [2023-11-17 16:14:19,316 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 393 transitions, 6068 flow [2023-11-17 16:14:19,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 67.0) internal successors, (1005), 15 states have internal predecessors, (1005), 0 states have call successors, (0), 0 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 16:14:19,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:19,317 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:19,323 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 16:14:19,521 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,SelfDestructingSolverStorable16 [2023-11-17 16:14:19,521 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 16:14:19,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:19,521 INFO L85 PathProgramCache]: Analyzing trace with hash -94802592, now seen corresponding path program 11 times [2023-11-17 16:14:19,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:19,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112970906] [2023-11-17 16:14:19,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:19,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:19,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:19,671 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:19,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:19,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112970906] [2023-11-17 16:14:19,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112970906] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:19,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739459603] [2023-11-17 16:14:19,671 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:14:19,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:19,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:19,674 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 16:14:19,706 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 16:14:19,733 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:14:19,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:14:19,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:14:19,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:19,868 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:19,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:19,977 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:19,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739459603] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:19,977 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:19,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2023-11-17 16:14:19,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845100055] [2023-11-17 16:14:19,978 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:19,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 16:14:19,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:19,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 16:14:19,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2023-11-17 16:14:19,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:14:19,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 393 transitions, 6068 flow. Second operand has 18 states, 18 states have (on average 66.72222222222223) internal successors, (1201), 18 states have internal predecessors, (1201), 0 states have call successors, (0), 0 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 16:14:19,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:19,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:14:19,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:20,958 INFO L124 PetriNetUnfolderBase]: 1285/2140 cut-off events. [2023-11-17 16:14:20,958 INFO L125 PetriNetUnfolderBase]: For 26744/26744 co-relation queries the response was YES. [2023-11-17 16:14:20,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17065 conditions, 2140 events. 1285/2140 cut-off events. For 26744/26744 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 11528 event pairs, 70 based on Foata normal form. 26/2166 useless extension candidates. Maximal degree in co-relation 16813. Up to 796 conditions per place. [2023-11-17 16:14:20,974 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 275 selfloop transitions, 234 changer transitions 1/510 dead transitions. [2023-11-17 16:14:20,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 510 transitions, 8500 flow [2023-11-17 16:14:20,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-17 16:14:20,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-11-17 16:14:20,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 1814 transitions. [2023-11-17 16:14:20,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43334925943621594 [2023-11-17 16:14:20,977 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 1814 transitions. [2023-11-17 16:14:20,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 1814 transitions. [2023-11-17 16:14:20,977 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:20,977 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 1814 transitions. [2023-11-17 16:14:20,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 69.76923076923077) internal successors, (1814), 26 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 16:14:20,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 161.0) internal successors, (4347), 27 states have internal predecessors, (4347), 0 states have call successors, (0), 0 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 16:14:20,983 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 161.0) internal successors, (4347), 27 states have internal predecessors, (4347), 0 states have call successors, (0), 0 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 16:14:20,983 INFO L175 Difference]: Start difference. First operand has 177 places, 393 transitions, 6068 flow. Second operand 26 states and 1814 transitions. [2023-11-17 16:14:20,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 510 transitions, 8500 flow [2023-11-17 16:14:21,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 510 transitions, 8031 flow, removed 214 selfloop flow, removed 4 redundant places. [2023-11-17 16:14:21,107 INFO L231 Difference]: Finished difference. Result has 207 places, 432 transitions, 7148 flow [2023-11-17 16:14:21,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=5727, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=201, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=7148, PETRI_PLACES=207, PETRI_TRANSITIONS=432} [2023-11-17 16:14:21,107 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 187 predicate places. [2023-11-17 16:14:21,107 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 432 transitions, 7148 flow [2023-11-17 16:14:21,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 66.72222222222223) internal successors, (1201), 18 states have internal predecessors, (1201), 0 states have call successors, (0), 0 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 16:14:21,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:21,108 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:21,114 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 16:14:21,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:21,315 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 16:14:21,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:21,315 INFO L85 PathProgramCache]: Analyzing trace with hash -2084944874, now seen corresponding path program 12 times [2023-11-17 16:14:21,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:21,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444236723] [2023-11-17 16:14:21,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:21,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:21,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:21,485 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:21,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:21,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444236723] [2023-11-17 16:14:21,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444236723] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:21,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065667386] [2023-11-17 16:14:21,485 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:14:21,485 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:21,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:21,492 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 16:14:21,493 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 16:14:21,594 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-17 16:14:21,594 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:14:21,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:14:21,596 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:21,679 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:21,680 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:21,776 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:21,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065667386] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:21,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:21,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 22 [2023-11-17 16:14:21,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111814876] [2023-11-17 16:14:21,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:21,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 16:14:21,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:21,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 16:14:21,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2023-11-17 16:14:21,778 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:14:21,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 432 transitions, 7148 flow. Second operand has 22 states, 22 states have (on average 66.54545454545455) internal successors, (1464), 22 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 16:14:21,779 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:21,779 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:14:21,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:23,115 INFO L124 PetriNetUnfolderBase]: 1514/2471 cut-off events. [2023-11-17 16:14:23,115 INFO L125 PetriNetUnfolderBase]: For 43904/43904 co-relation queries the response was YES. [2023-11-17 16:14:23,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21440 conditions, 2471 events. 1514/2471 cut-off events. For 43904/43904 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 13399 event pairs, 112 based on Foata normal form. 26/2497 useless extension candidates. Maximal degree in co-relation 21203. Up to 1060 conditions per place. [2023-11-17 16:14:23,135 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 200 selfloop transitions, 450 changer transitions 20/670 dead transitions. [2023-11-17 16:14:23,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 670 transitions, 12620 flow [2023-11-17 16:14:23,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-17 16:14:23,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-11-17 16:14:23,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 2708 transitions. [2023-11-17 16:14:23,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43127886606147475 [2023-11-17 16:14:23,140 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 2708 transitions. [2023-11-17 16:14:23,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 2708 transitions. [2023-11-17 16:14:23,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:23,142 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 2708 transitions. [2023-11-17 16:14:23,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 69.43589743589743) internal successors, (2708), 39 states have internal predecessors, (2708), 0 states have call successors, (0), 0 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 16:14:23,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 161.0) internal successors, (6440), 40 states have internal predecessors, (6440), 0 states have call successors, (0), 0 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 16:14:23,155 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 161.0) internal successors, (6440), 40 states have internal predecessors, (6440), 0 states have call successors, (0), 0 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 16:14:23,155 INFO L175 Difference]: Start difference. First operand has 207 places, 432 transitions, 7148 flow. Second operand 39 states and 2708 transitions. [2023-11-17 16:14:23,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 670 transitions, 12620 flow [2023-11-17 16:14:23,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 670 transitions, 11995 flow, removed 222 selfloop flow, removed 12 redundant places. [2023-11-17 16:14:23,396 INFO L231 Difference]: Finished difference. Result has 240 places, 575 transitions, 11058 flow [2023-11-17 16:14:23,396 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=6745, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=432, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=318, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=11058, PETRI_PLACES=240, PETRI_TRANSITIONS=575} [2023-11-17 16:14:23,397 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 220 predicate places. [2023-11-17 16:14:23,397 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 575 transitions, 11058 flow [2023-11-17 16:14:23,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 66.54545454545455) internal successors, (1464), 22 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 16:14:23,397 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:23,397 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:23,401 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 16:14:23,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:23,601 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 16:14:23,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:23,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1858460648, now seen corresponding path program 13 times [2023-11-17 16:14:23,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:23,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891509101] [2023-11-17 16:14:23,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:23,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:23,685 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:23,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:23,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891509101] [2023-11-17 16:14:23,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891509101] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:23,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564644023] [2023-11-17 16:14:23,685 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:14:23,685 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:23,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:23,690 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 16:14:23,739 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 16:14:23,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:23,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:14:23,793 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:23,839 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:23,840 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:23,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564644023] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:23,931 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:23,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2023-11-17 16:14:23,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623219844] [2023-11-17 16:14:23,931 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:23,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 16:14:23,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:23,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 16:14:23,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2023-11-17 16:14:23,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:14:23,933 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 575 transitions, 11058 flow. Second operand has 17 states, 17 states have (on average 66.88235294117646) internal successors, (1137), 17 states have internal predecessors, (1137), 0 states have call successors, (0), 0 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 16:14:23,933 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:23,933 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:14:23,933 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:25,467 INFO L124 PetriNetUnfolderBase]: 1654/2719 cut-off events. [2023-11-17 16:14:25,467 INFO L125 PetriNetUnfolderBase]: For 49019/49019 co-relation queries the response was YES. [2023-11-17 16:14:25,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24665 conditions, 2719 events. 1654/2719 cut-off events. For 49019/49019 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 15100 event pairs, 74 based on Foata normal form. 42/2761 useless extension candidates. Maximal degree in co-relation 24413. Up to 809 conditions per place. [2023-11-17 16:14:25,491 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 312 selfloop transitions, 420 changer transitions 13/745 dead transitions. [2023-11-17 16:14:25,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 745 transitions, 14681 flow [2023-11-17 16:14:25,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-11-17 16:14:25,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-11-17 16:14:25,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 2854 transitions. [2023-11-17 16:14:25,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43235873352522347 [2023-11-17 16:14:25,494 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 2854 transitions. [2023-11-17 16:14:25,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 2854 transitions. [2023-11-17 16:14:25,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:25,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 2854 transitions. [2023-11-17 16:14:25,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 69.60975609756098) internal successors, (2854), 41 states have internal predecessors, (2854), 0 states have call successors, (0), 0 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 16:14:25,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 161.0) internal successors, (6762), 42 states have internal predecessors, (6762), 0 states have call successors, (0), 0 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 16:14:25,501 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 161.0) internal successors, (6762), 42 states have internal predecessors, (6762), 0 states have call successors, (0), 0 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 16:14:25,501 INFO L175 Difference]: Start difference. First operand has 240 places, 575 transitions, 11058 flow. Second operand 41 states and 2854 transitions. [2023-11-17 16:14:25,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 745 transitions, 14681 flow [2023-11-17 16:14:26,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 745 transitions, 13229 flow, removed 656 selfloop flow, removed 12 redundant places. [2023-11-17 16:14:26,023 INFO L231 Difference]: Finished difference. Result has 278 places, 643 transitions, 12259 flow [2023-11-17 16:14:26,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=9724, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=357, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=12259, PETRI_PLACES=278, PETRI_TRANSITIONS=643} [2023-11-17 16:14:26,023 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 258 predicate places. [2023-11-17 16:14:26,023 INFO L495 AbstractCegarLoop]: Abstraction has has 278 places, 643 transitions, 12259 flow [2023-11-17 16:14:26,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 66.88235294117646) internal successors, (1137), 17 states have internal predecessors, (1137), 0 states have call successors, (0), 0 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 16:14:26,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:26,024 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:26,039 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 16:14:26,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:26,229 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 16:14:26,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:26,229 INFO L85 PathProgramCache]: Analyzing trace with hash 462541062, now seen corresponding path program 14 times [2023-11-17 16:14:26,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:26,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265110947] [2023-11-17 16:14:26,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:26,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:26,400 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:26,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:26,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265110947] [2023-11-17 16:14:26,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265110947] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:26,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274006208] [2023-11-17 16:14:26,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:14:26,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:26,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:26,414 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 16:14:26,432 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 16:14:26,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:14:26,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:14:26,469 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:14:26,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:26,538 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:26,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:26,630 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:26,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274006208] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:26,631 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:26,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 23 [2023-11-17 16:14:26,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108153605] [2023-11-17 16:14:26,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:26,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 16:14:26,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:26,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 16:14:26,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2023-11-17 16:14:26,632 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:14:26,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 278 places, 643 transitions, 12259 flow. Second operand has 23 states, 23 states have (on average 66.47826086956522) internal successors, (1529), 23 states have internal predecessors, (1529), 0 states have call successors, (0), 0 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 16:14:26,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:26,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:14:26,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:28,522 INFO L124 PetriNetUnfolderBase]: 1651/2740 cut-off events. [2023-11-17 16:14:28,522 INFO L125 PetriNetUnfolderBase]: For 42664/42664 co-relation queries the response was YES. [2023-11-17 16:14:28,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24595 conditions, 2740 events. 1651/2740 cut-off events. For 42664/42664 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 15508 event pairs, 77 based on Foata normal form. 48/2788 useless extension candidates. Maximal degree in co-relation 24323. Up to 889 conditions per place. [2023-11-17 16:14:28,547 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 189 selfloop transitions, 560 changer transitions 1/750 dead transitions. [2023-11-17 16:14:28,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 750 transitions, 14663 flow [2023-11-17 16:14:28,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2023-11-17 16:14:28,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2023-11-17 16:14:28,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 3268 transitions. [2023-11-17 16:14:28,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43187524778644115 [2023-11-17 16:14:28,551 INFO L72 ComplementDD]: Start complementDD. Operand 47 states and 3268 transitions. [2023-11-17 16:14:28,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 47 states and 3268 transitions. [2023-11-17 16:14:28,551 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:28,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 47 states and 3268 transitions. [2023-11-17 16:14:28,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 48 states, 47 states have (on average 69.53191489361703) internal successors, (3268), 47 states have internal predecessors, (3268), 0 states have call successors, (0), 0 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 16:14:28,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 48 states, 48 states have (on average 161.0) internal successors, (7728), 48 states have internal predecessors, (7728), 0 states have call successors, (0), 0 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 16:14:28,646 INFO L81 ComplementDD]: Finished complementDD. Result has 48 states, 48 states have (on average 161.0) internal successors, (7728), 48 states have internal predecessors, (7728), 0 states have call successors, (0), 0 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 16:14:28,647 INFO L175 Difference]: Start difference. First operand has 278 places, 643 transitions, 12259 flow. Second operand 47 states and 3268 transitions. [2023-11-17 16:14:28,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 750 transitions, 14663 flow [2023-11-17 16:14:29,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 750 transitions, 14229 flow, removed 166 selfloop flow, removed 14 redundant places. [2023-11-17 16:14:29,223 INFO L231 Difference]: Finished difference. Result has 312 places, 658 transitions, 13432 flow [2023-11-17 16:14:29,224 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=11758, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=638, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=540, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=47, PETRI_FLOW=13432, PETRI_PLACES=312, PETRI_TRANSITIONS=658} [2023-11-17 16:14:29,237 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 292 predicate places. [2023-11-17 16:14:29,237 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 658 transitions, 13432 flow [2023-11-17 16:14:29,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 66.47826086956522) internal successors, (1529), 23 states have internal predecessors, (1529), 0 states have call successors, (0), 0 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 16:14:29,237 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:29,237 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:29,259 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 16:14:29,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:29,457 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 16:14:29,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:29,457 INFO L85 PathProgramCache]: Analyzing trace with hash -333439394, now seen corresponding path program 15 times [2023-11-17 16:14:29,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:29,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072575338] [2023-11-17 16:14:29,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:29,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:29,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:29,556 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:29,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:29,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072575338] [2023-11-17 16:14:29,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072575338] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:29,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1277440884] [2023-11-17 16:14:29,556 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:14:29,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:29,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:29,574 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 16:14:29,601 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 16:14:29,649 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-17 16:14:29,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:14:29,650 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:14:29,650 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:29,700 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:29,700 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:29,798 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:29,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1277440884] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:29,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:29,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 18 [2023-11-17 16:14:29,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225604307] [2023-11-17 16:14:29,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:29,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-17 16:14:29,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:29,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-17 16:14:29,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2023-11-17 16:14:29,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:14:29,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 658 transitions, 13432 flow. Second operand has 18 states, 18 states have (on average 66.61111111111111) internal successors, (1199), 18 states have internal predecessors, (1199), 0 states have call successors, (0), 0 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 16:14:29,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:29,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:14:29,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:31,905 INFO L124 PetriNetUnfolderBase]: 2029/3394 cut-off events. [2023-11-17 16:14:31,905 INFO L125 PetriNetUnfolderBase]: For 57216/57216 co-relation queries the response was YES. [2023-11-17 16:14:31,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32141 conditions, 3394 events. 2029/3394 cut-off events. For 57216/57216 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 20291 event pairs, 272 based on Foata normal form. 34/3428 useless extension candidates. Maximal degree in co-relation 31747. Up to 2070 conditions per place. [2023-11-17 16:14:31,934 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 522 selfloop transitions, 373 changer transitions 13/908 dead transitions. [2023-11-17 16:14:31,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 908 transitions, 19648 flow [2023-11-17 16:14:31,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-11-17 16:14:31,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-11-17 16:14:31,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 3044 transitions. [2023-11-17 16:14:31,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42970073404856013 [2023-11-17 16:14:31,937 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 3044 transitions. [2023-11-17 16:14:31,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 3044 transitions. [2023-11-17 16:14:31,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:31,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 3044 transitions. [2023-11-17 16:14:31,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 69.18181818181819) internal successors, (3044), 44 states have internal predecessors, (3044), 0 states have call successors, (0), 0 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 16:14:31,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 161.0) internal successors, (7245), 45 states have internal predecessors, (7245), 0 states have call successors, (0), 0 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 16:14:31,944 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 161.0) internal successors, (7245), 45 states have internal predecessors, (7245), 0 states have call successors, (0), 0 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 16:14:31,944 INFO L175 Difference]: Start difference. First operand has 312 places, 658 transitions, 13432 flow. Second operand 44 states and 3044 transitions. [2023-11-17 16:14:31,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 908 transitions, 19648 flow [2023-11-17 16:14:32,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 908 transitions, 18588 flow, removed 125 selfloop flow, removed 36 redundant places. [2023-11-17 16:14:32,580 INFO L231 Difference]: Finished difference. Result has 331 places, 776 transitions, 16579 flow [2023-11-17 16:14:32,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=12462, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=263, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=16579, PETRI_PLACES=331, PETRI_TRANSITIONS=776} [2023-11-17 16:14:32,581 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 311 predicate places. [2023-11-17 16:14:32,581 INFO L495 AbstractCegarLoop]: Abstraction has has 331 places, 776 transitions, 16579 flow [2023-11-17 16:14:32,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 66.61111111111111) internal successors, (1199), 18 states have internal predecessors, (1199), 0 states have call successors, (0), 0 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 16:14:32,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:32,581 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:32,600 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 16:14:32,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:32,786 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 16:14:32,786 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:32,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1312918848, now seen corresponding path program 16 times [2023-11-17 16:14:32,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:32,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893103921] [2023-11-17 16:14:32,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:32,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:32,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:32,918 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:32,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:32,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893103921] [2023-11-17 16:14:32,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893103921] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:32,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190335007] [2023-11-17 16:14:32,919 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:14:32,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:32,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:32,934 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 16:14:32,947 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 16:14:33,010 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:14:33,011 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:14:33,011 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:14:33,012 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:33,074 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:33,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:33,194 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:33,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190335007] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:33,194 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:33,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-11-17 16:14:33,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75350321] [2023-11-17 16:14:33,194 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:33,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 16:14:33,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:33,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 16:14:33,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-11-17 16:14:33,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:14:33,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 331 places, 776 transitions, 16579 flow. Second operand has 16 states, 16 states have (on average 66.9375) internal successors, (1071), 16 states have internal predecessors, (1071), 0 states have call successors, (0), 0 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 16:14:33,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:33,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:14:33,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:34,917 INFO L124 PetriNetUnfolderBase]: 2301/3864 cut-off events. [2023-11-17 16:14:34,917 INFO L125 PetriNetUnfolderBase]: For 64494/64494 co-relation queries the response was YES. [2023-11-17 16:14:34,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37077 conditions, 3864 events. 2301/3864 cut-off events. For 64494/64494 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 23677 event pairs, 412 based on Foata normal form. 18/3882 useless extension candidates. Maximal degree in co-relation 36663. Up to 2764 conditions per place. [2023-11-17 16:14:34,951 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 731 selfloop transitions, 278 changer transitions 1/1010 dead transitions. [2023-11-17 16:14:34,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 1010 transitions, 22220 flow [2023-11-17 16:14:34,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-11-17 16:14:34,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-11-17 16:14:34,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2789 transitions. [2023-11-17 16:14:34,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43307453416149067 [2023-11-17 16:14:34,955 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2789 transitions. [2023-11-17 16:14:34,955 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2789 transitions. [2023-11-17 16:14:34,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:34,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2789 transitions. [2023-11-17 16:14:34,958 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 69.725) internal successors, (2789), 40 states have internal predecessors, (2789), 0 states have call successors, (0), 0 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 16:14:34,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 161.0) internal successors, (6601), 41 states have internal predecessors, (6601), 0 states have call successors, (0), 0 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 16:14:34,961 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 161.0) internal successors, (6601), 41 states have internal predecessors, (6601), 0 states have call successors, (0), 0 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 16:14:34,961 INFO L175 Difference]: Start difference. First operand has 331 places, 776 transitions, 16579 flow. Second operand 40 states and 2789 transitions. [2023-11-17 16:14:34,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 1010 transitions, 22220 flow [2023-11-17 16:14:35,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 1010 transitions, 21772 flow, removed 160 selfloop flow, removed 21 redundant places. [2023-11-17 16:14:35,713 INFO L231 Difference]: Finished difference. Result has 361 places, 865 transitions, 18943 flow [2023-11-17 16:14:35,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=16131, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=776, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=200, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=529, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=18943, PETRI_PLACES=361, PETRI_TRANSITIONS=865} [2023-11-17 16:14:35,714 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 341 predicate places. [2023-11-17 16:14:35,714 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 865 transitions, 18943 flow [2023-11-17 16:14:35,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.9375) internal successors, (1071), 16 states have internal predecessors, (1071), 0 states have call successors, (0), 0 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 16:14:35,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:35,714 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:35,721 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 16:14:35,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:35,918 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 16:14:35,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:35,919 INFO L85 PathProgramCache]: Analyzing trace with hash 989307478, now seen corresponding path program 17 times [2023-11-17 16:14:35,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:35,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143696851] [2023-11-17 16:14:35,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:35,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:36,060 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:36,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:36,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143696851] [2023-11-17 16:14:36,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143696851] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:36,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923737350] [2023-11-17 16:14:36,060 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:14:36,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:36,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:36,061 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 16:14:36,087 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 16:14:36,121 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 16:14:36,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:14:36,122 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:14:36,123 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:36,170 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:36,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:36,262 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:36,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923737350] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:36,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:36,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-11-17 16:14:36,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879757956] [2023-11-17 16:14:36,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:36,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 16:14:36,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:36,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 16:14:36,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2023-11-17 16:14:36,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:14:36,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 865 transitions, 18943 flow. Second operand has 16 states, 16 states have (on average 66.9375) internal successors, (1071), 16 states have internal predecessors, (1071), 0 states have call successors, (0), 0 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 16:14:36,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:36,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:14:36,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:38,218 INFO L124 PetriNetUnfolderBase]: 2579/4332 cut-off events. [2023-11-17 16:14:38,219 INFO L125 PetriNetUnfolderBase]: For 84728/84728 co-relation queries the response was YES. [2023-11-17 16:14:38,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43109 conditions, 4332 events. 2579/4332 cut-off events. For 84728/84728 co-relation queries the response was YES. Maximal size of possible extension queue 323. Compared 27109 event pairs, 576 based on Foata normal form. 42/4374 useless extension candidates. Maximal degree in co-relation 42799. Up to 3510 conditions per place. [2023-11-17 16:14:38,261 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 885 selfloop transitions, 198 changer transitions 4/1087 dead transitions. [2023-11-17 16:14:38,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 1087 transitions, 24966 flow [2023-11-17 16:14:38,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-17 16:14:38,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-17 16:14:38,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2577 transitions. [2023-11-17 16:14:38,265 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43260030216551953 [2023-11-17 16:14:38,265 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2577 transitions. [2023-11-17 16:14:38,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2577 transitions. [2023-11-17 16:14:38,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:38,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2577 transitions. [2023-11-17 16:14:38,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 69.64864864864865) internal successors, (2577), 37 states have internal predecessors, (2577), 0 states have call successors, (0), 0 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 16:14:38,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 161.0) internal successors, (6118), 38 states have internal predecessors, (6118), 0 states have call successors, (0), 0 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 16:14:38,287 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 161.0) internal successors, (6118), 38 states have internal predecessors, (6118), 0 states have call successors, (0), 0 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 16:14:38,287 INFO L175 Difference]: Start difference. First operand has 361 places, 865 transitions, 18943 flow. Second operand 37 states and 2577 transitions. [2023-11-17 16:14:38,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 1087 transitions, 24966 flow [2023-11-17 16:14:39,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 1087 transitions, 24046 flow, removed 276 selfloop flow, removed 12 redundant places. [2023-11-17 16:14:39,437 INFO L231 Difference]: Finished difference. Result has 402 places, 952 transitions, 21023 flow [2023-11-17 16:14:39,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=18123, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=865, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=708, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=21023, PETRI_PLACES=402, PETRI_TRANSITIONS=952} [2023-11-17 16:14:39,438 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 382 predicate places. [2023-11-17 16:14:39,438 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 952 transitions, 21023 flow [2023-11-17 16:14:39,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.9375) internal successors, (1071), 16 states have internal predecessors, (1071), 0 states have call successors, (0), 0 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 16:14:39,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:39,439 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:39,443 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 16:14:39,643 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,SelfDestructingSolverStorable23 [2023-11-17 16:14:39,643 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 16:14:39,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:39,643 INFO L85 PathProgramCache]: Analyzing trace with hash 148295642, now seen corresponding path program 18 times [2023-11-17 16:14:39,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:39,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698899404] [2023-11-17 16:14:39,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:39,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:39,771 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:39,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:39,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698899404] [2023-11-17 16:14:39,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698899404] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:39,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [186959975] [2023-11-17 16:14:39,771 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:14:39,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:39,772 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:39,772 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 16:14:39,798 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 16:14:39,828 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 16:14:39,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:14:39,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:14:39,830 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:39,878 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:39,879 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:40,008 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:40,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [186959975] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:40,008 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:40,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2023-11-17 16:14:40,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85512500] [2023-11-17 16:14:40,009 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:40,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 16:14:40,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:40,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 16:14:40,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2023-11-17 16:14:40,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:14:40,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 952 transitions, 21023 flow. Second operand has 17 states, 17 states have (on average 66.88235294117646) internal successors, (1137), 17 states have internal predecessors, (1137), 0 states have call successors, (0), 0 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 16:14:40,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:40,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:14:40,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:42,582 INFO L124 PetriNetUnfolderBase]: 2765/4654 cut-off events. [2023-11-17 16:14:42,582 INFO L125 PetriNetUnfolderBase]: For 96102/96102 co-relation queries the response was YES. [2023-11-17 16:14:42,614 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47067 conditions, 4654 events. 2765/4654 cut-off events. For 96102/96102 co-relation queries the response was YES. Maximal size of possible extension queue 330. Compared 29458 event pairs, 572 based on Foata normal form. 26/4680 useless extension candidates. Maximal degree in co-relation 46725. Up to 3522 conditions per place. [2023-11-17 16:14:42,638 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 778 selfloop transitions, 307 changer transitions 14/1099 dead transitions. [2023-11-17 16:14:42,638 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 1099 transitions, 25599 flow [2023-11-17 16:14:42,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-11-17 16:14:42,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-11-17 16:14:42,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2290 transitions. [2023-11-17 16:14:42,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43101825710521363 [2023-11-17 16:14:42,641 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2290 transitions. [2023-11-17 16:14:42,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2290 transitions. [2023-11-17 16:14:42,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:42,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2290 transitions. [2023-11-17 16:14:42,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 69.39393939393939) internal successors, (2290), 33 states have internal predecessors, (2290), 0 states have call successors, (0), 0 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 16:14:42,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 161.0) internal successors, (5474), 34 states have internal predecessors, (5474), 0 states have call successors, (0), 0 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 16:14:42,646 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 161.0) internal successors, (5474), 34 states have internal predecessors, (5474), 0 states have call successors, (0), 0 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 16:14:42,646 INFO L175 Difference]: Start difference. First operand has 402 places, 952 transitions, 21023 flow. Second operand 33 states and 2290 transitions. [2023-11-17 16:14:42,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 1099 transitions, 25599 flow [2023-11-17 16:14:43,925 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 420 places, 1099 transitions, 24679 flow, removed 414 selfloop flow, removed 13 redundant places. [2023-11-17 16:14:43,944 INFO L231 Difference]: Finished difference. Result has 432 places, 1018 transitions, 22857 flow [2023-11-17 16:14:43,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=20069, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=946, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=242, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=664, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=22857, PETRI_PLACES=432, PETRI_TRANSITIONS=1018} [2023-11-17 16:14:43,945 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 412 predicate places. [2023-11-17 16:14:43,945 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 1018 transitions, 22857 flow [2023-11-17 16:14:43,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 66.88235294117646) internal successors, (1137), 17 states have internal predecessors, (1137), 0 states have call successors, (0), 0 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 16:14:43,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:43,945 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:43,949 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 16:14:44,149 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,SelfDestructingSolverStorable24 [2023-11-17 16:14:44,149 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 16:14:44,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:44,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1931237636, now seen corresponding path program 19 times [2023-11-17 16:14:44,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:44,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153952328] [2023-11-17 16:14:44,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:44,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:44,261 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:44,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:44,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153952328] [2023-11-17 16:14:44,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153952328] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:44,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751404820] [2023-11-17 16:14:44,262 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:14:44,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:44,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:44,263 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 16:14:44,306 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 16:14:44,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:44,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:14:44,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:44,386 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:44,386 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:44,480 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:44,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751404820] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:44,480 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:44,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2023-11-17 16:14:44,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069099505] [2023-11-17 16:14:44,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:44,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-17 16:14:44,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:44,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-17 16:14:44,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-11-17 16:14:44,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:14:44,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 1018 transitions, 22857 flow. Second operand has 16 states, 16 states have (on average 66.75) internal successors, (1068), 16 states have internal predecessors, (1068), 0 states have call successors, (0), 0 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 16:14:44,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:44,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:14:44,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:46,698 INFO L124 PetriNetUnfolderBase]: 2872/4835 cut-off events. [2023-11-17 16:14:46,698 INFO L125 PetriNetUnfolderBase]: For 105384/105384 co-relation queries the response was YES. [2023-11-17 16:14:46,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49443 conditions, 4835 events. 2872/4835 cut-off events. For 105384/105384 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 30886 event pairs, 697 based on Foata normal form. 48/4883 useless extension candidates. Maximal degree in co-relation 49003. Up to 4269 conditions per place. [2023-11-17 16:14:46,750 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 1031 selfloop transitions, 148 changer transitions 0/1179 dead transitions. [2023-11-17 16:14:46,751 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 468 places, 1179 transitions, 27516 flow [2023-11-17 16:14:46,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-17 16:14:46,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-17 16:14:46,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2577 transitions. [2023-11-17 16:14:46,753 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43260030216551953 [2023-11-17 16:14:46,753 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2577 transitions. [2023-11-17 16:14:46,753 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2577 transitions. [2023-11-17 16:14:46,754 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:46,754 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2577 transitions. [2023-11-17 16:14:46,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 69.64864864864865) internal successors, (2577), 37 states have internal predecessors, (2577), 0 states have call successors, (0), 0 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 16:14:46,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 161.0) internal successors, (6118), 38 states have internal predecessors, (6118), 0 states have call successors, (0), 0 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 16:14:46,759 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 161.0) internal successors, (6118), 38 states have internal predecessors, (6118), 0 states have call successors, (0), 0 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 16:14:46,759 INFO L175 Difference]: Start difference. First operand has 432 places, 1018 transitions, 22857 flow. Second operand 37 states and 2577 transitions. [2023-11-17 16:14:46,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 468 places, 1179 transitions, 27516 flow [2023-11-17 16:14:48,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 1179 transitions, 26798 flow, removed 248 selfloop flow, removed 22 redundant places. [2023-11-17 16:14:48,187 INFO L231 Difference]: Finished difference. Result has 462 places, 1079 transitions, 24018 flow [2023-11-17 16:14:48,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=22143, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1018, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=911, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=24018, PETRI_PLACES=462, PETRI_TRANSITIONS=1079} [2023-11-17 16:14:48,189 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 442 predicate places. [2023-11-17 16:14:48,189 INFO L495 AbstractCegarLoop]: Abstraction has has 462 places, 1079 transitions, 24018 flow [2023-11-17 16:14:48,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 66.75) internal successors, (1068), 16 states have internal predecessors, (1068), 0 states have call successors, (0), 0 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 16:14:48,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:48,189 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:48,202 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 16:14:48,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-17 16:14:48,393 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 16:14:48,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:48,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1264139472, now seen corresponding path program 20 times [2023-11-17 16:14:48,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:48,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49114610] [2023-11-17 16:14:48,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:48,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:48,550 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:48,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:48,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49114610] [2023-11-17 16:14:48,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49114610] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:48,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322247427] [2023-11-17 16:14:48,550 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:14:48,550 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:48,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:48,551 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 16:14:48,576 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 16:14:48,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:14:48,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:14:48,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:14:48,626 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:48,697 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:48,697 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:48,822 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:48,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322247427] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:48,823 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:48,823 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2023-11-17 16:14:48,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692746564] [2023-11-17 16:14:48,823 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:48,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 16:14:48,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:48,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 16:14:48,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2023-11-17 16:14:48,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:14:48,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 462 places, 1079 transitions, 24018 flow. Second operand has 21 states, 21 states have (on average 66.66666666666667) internal successors, (1400), 21 states have internal predecessors, (1400), 0 states have call successors, (0), 0 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 16:14:48,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:48,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:14:48,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:51,476 INFO L124 PetriNetUnfolderBase]: 3051/5104 cut-off events. [2023-11-17 16:14:51,476 INFO L125 PetriNetUnfolderBase]: For 108573/108573 co-relation queries the response was YES. [2023-11-17 16:14:51,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52892 conditions, 5104 events. 3051/5104 cut-off events. For 108573/108573 co-relation queries the response was YES. Maximal size of possible extension queue 378. Compared 32718 event pairs, 454 based on Foata normal form. 22/5126 useless extension candidates. Maximal degree in co-relation 52233. Up to 3220 conditions per place. [2023-11-17 16:14:51,534 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 545 selfloop transitions, 693 changer transitions 15/1253 dead transitions. [2023-11-17 16:14:51,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 1253 transitions, 29952 flow [2023-11-17 16:14:51,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-17 16:14:51,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-17 16:14:51,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2151 transitions. [2023-11-17 16:14:51,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43097575636145063 [2023-11-17 16:14:51,536 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2151 transitions. [2023-11-17 16:14:51,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2151 transitions. [2023-11-17 16:14:51,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:51,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2151 transitions. [2023-11-17 16:14:51,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 69.38709677419355) internal successors, (2151), 31 states have internal predecessors, (2151), 0 states have call successors, (0), 0 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 16:14:51,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 161.0) internal successors, (5152), 32 states have internal predecessors, (5152), 0 states have call successors, (0), 0 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 16:14:51,541 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 161.0) internal successors, (5152), 32 states have internal predecessors, (5152), 0 states have call successors, (0), 0 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 16:14:51,541 INFO L175 Difference]: Start difference. First operand has 462 places, 1079 transitions, 24018 flow. Second operand 31 states and 2151 transitions. [2023-11-17 16:14:51,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 1253 transitions, 29952 flow [2023-11-17 16:14:53,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 1253 transitions, 28804 flow, removed 503 selfloop flow, removed 15 redundant places. [2023-11-17 16:14:53,350 INFO L231 Difference]: Finished difference. Result has 486 places, 1192 transitions, 28110 flow [2023-11-17 16:14:53,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=22989, PETRI_DIFFERENCE_MINUEND_PLACES=447, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1079, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=587, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=28110, PETRI_PLACES=486, PETRI_TRANSITIONS=1192} [2023-11-17 16:14:53,351 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 466 predicate places. [2023-11-17 16:14:53,351 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 1192 transitions, 28110 flow [2023-11-17 16:14:53,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 66.66666666666667) internal successors, (1400), 21 states have internal predecessors, (1400), 0 states have call successors, (0), 0 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 16:14:53,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:14:53,351 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:14:53,355 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 16:14:53,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:53,552 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 16:14:53,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:14:53,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1443410808, now seen corresponding path program 21 times [2023-11-17 16:14:53,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:14:53,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699589309] [2023-11-17 16:14:53,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:14:53,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:14:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:14:53,708 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:53,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:14:53,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699589309] [2023-11-17 16:14:53,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699589309] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:14:53,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506428030] [2023-11-17 16:14:53,709 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:14:53,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:14:53,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:14:53,720 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 16:14:53,721 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 16:14:53,788 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-17 16:14:53,788 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:14:53,789 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:14:53,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:14:53,846 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:53,847 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:14:53,942 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:14:53,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506428030] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:14:53,943 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:14:53,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2023-11-17 16:14:53,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729064089] [2023-11-17 16:14:53,943 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:14:53,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 16:14:53,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:14:53,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 16:14:53,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2023-11-17 16:14:53,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:14:53,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 1192 transitions, 28110 flow. Second operand has 21 states, 21 states have (on average 66.71428571428571) internal successors, (1401), 21 states have internal predecessors, (1401), 0 states have call successors, (0), 0 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 16:14:53,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:14:53,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:14:53,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:14:57,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:14:58,971 INFO L124 PetriNetUnfolderBase]: 3071/5159 cut-off events. [2023-11-17 16:14:58,971 INFO L125 PetriNetUnfolderBase]: For 124118/124118 co-relation queries the response was YES. [2023-11-17 16:14:59,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55846 conditions, 5159 events. 3071/5159 cut-off events. For 124118/124118 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 33253 event pairs, 333 based on Foata normal form. 48/5207 useless extension candidates. Maximal degree in co-relation 55363. Up to 2624 conditions per place. [2023-11-17 16:14:59,028 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 466 selfloop transitions, 808 changer transitions 4/1278 dead transitions. [2023-11-17 16:14:59,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 521 places, 1278 transitions, 31810 flow [2023-11-17 16:14:59,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-17 16:14:59,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-17 16:14:59,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2572 transitions. [2023-11-17 16:14:59,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4317609535000839 [2023-11-17 16:14:59,031 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2572 transitions. [2023-11-17 16:14:59,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2572 transitions. [2023-11-17 16:14:59,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:14:59,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2572 transitions. [2023-11-17 16:14:59,033 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 69.51351351351352) internal successors, (2572), 37 states have internal predecessors, (2572), 0 states have call successors, (0), 0 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 16:14:59,036 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 161.0) internal successors, (6118), 38 states have internal predecessors, (6118), 0 states have call successors, (0), 0 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 16:14:59,036 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 161.0) internal successors, (6118), 38 states have internal predecessors, (6118), 0 states have call successors, (0), 0 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 16:14:59,036 INFO L175 Difference]: Start difference. First operand has 486 places, 1192 transitions, 28110 flow. Second operand 37 states and 2572 transitions. [2023-11-17 16:14:59,036 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 521 places, 1278 transitions, 31810 flow [2023-11-17 16:15:00,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 505 places, 1278 transitions, 30633 flow, removed 528 selfloop flow, removed 16 redundant places. [2023-11-17 16:15:00,963 INFO L231 Difference]: Finished difference. Result has 507 places, 1213 transitions, 29396 flow [2023-11-17 16:15:00,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=27033, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=780, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=29396, PETRI_PLACES=507, PETRI_TRANSITIONS=1213} [2023-11-17 16:15:00,968 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 487 predicate places. [2023-11-17 16:15:00,968 INFO L495 AbstractCegarLoop]: Abstraction has has 507 places, 1213 transitions, 29396 flow [2023-11-17 16:15:00,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 66.71428571428571) internal successors, (1401), 21 states have internal predecessors, (1401), 0 states have call successors, (0), 0 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 16:15:00,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:15:00,969 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:15:00,975 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 16:15:01,173 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,SelfDestructingSolverStorable27 [2023-11-17 16:15:01,173 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 16:15:01,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:15:01,173 INFO L85 PathProgramCache]: Analyzing trace with hash -698708310, now seen corresponding path program 22 times [2023-11-17 16:15:01,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:15:01,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619120079] [2023-11-17 16:15:01,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:15:01,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:15:01,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:15:01,253 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:15:01,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:15:01,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619120079] [2023-11-17 16:15:01,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619120079] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:15:01,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784135116] [2023-11-17 16:15:01,254 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:15:01,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:15:01,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:15:01,255 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 16:15:01,277 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 16:15:01,318 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:15:01,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:15:01,319 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-17 16:15:01,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:15:01,365 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:15:01,365 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:15:01,460 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:15:01,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784135116] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:15:01,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:15:01,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2023-11-17 16:15:01,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164024661] [2023-11-17 16:15:01,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:15:01,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-17 16:15:01,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:15:01,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-17 16:15:01,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2023-11-17 16:15:01,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:15:01,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 507 places, 1213 transitions, 29396 flow. Second operand has 17 states, 17 states have (on average 66.88235294117646) internal successors, (1137), 17 states have internal predecessors, (1137), 0 states have call successors, (0), 0 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 16:15:01,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:15:01,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:15:01,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:15:04,691 INFO L124 PetriNetUnfolderBase]: 3326/5614 cut-off events. [2023-11-17 16:15:04,691 INFO L125 PetriNetUnfolderBase]: For 125333/125333 co-relation queries the response was YES. [2023-11-17 16:15:04,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61811 conditions, 5614 events. 3326/5614 cut-off events. For 125333/125333 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 36829 event pairs, 604 based on Foata normal form. 26/5640 useless extension candidates. Maximal degree in co-relation 61252. Up to 3819 conditions per place. [2023-11-17 16:15:04,756 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 886 selfloop transitions, 488 changer transitions 12/1386 dead transitions. [2023-11-17 16:15:04,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 1386 transitions, 35263 flow [2023-11-17 16:15:04,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-17 16:15:04,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-17 16:15:04,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 2564 transitions. [2023-11-17 16:15:04,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43041799563538696 [2023-11-17 16:15:04,759 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 2564 transitions. [2023-11-17 16:15:04,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 2564 transitions. [2023-11-17 16:15:04,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:15:04,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 2564 transitions. [2023-11-17 16:15:04,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 69.29729729729729) internal successors, (2564), 37 states have internal predecessors, (2564), 0 states have call successors, (0), 0 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 16:15:04,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 161.0) internal successors, (6118), 38 states have internal predecessors, (6118), 0 states have call successors, (0), 0 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 16:15:04,767 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 161.0) internal successors, (6118), 38 states have internal predecessors, (6118), 0 states have call successors, (0), 0 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 16:15:04,767 INFO L175 Difference]: Start difference. First operand has 507 places, 1213 transitions, 29396 flow. Second operand 37 states and 2564 transitions. [2023-11-17 16:15:04,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 1386 transitions, 35263 flow [2023-11-17 16:15:06,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 517 places, 1386 transitions, 33478 flow, removed 218 selfloop flow, removed 26 redundant places. [2023-11-17 16:15:06,940 INFO L231 Difference]: Finished difference. Result has 527 places, 1307 transitions, 31784 flow [2023-11-17 16:15:06,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=27740, PETRI_DIFFERENCE_MINUEND_PLACES=481, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=406, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=751, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=31784, PETRI_PLACES=527, PETRI_TRANSITIONS=1307} [2023-11-17 16:15:06,942 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 507 predicate places. [2023-11-17 16:15:06,942 INFO L495 AbstractCegarLoop]: Abstraction has has 527 places, 1307 transitions, 31784 flow [2023-11-17 16:15:06,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 66.88235294117646) internal successors, (1137), 17 states have internal predecessors, (1137), 0 states have call successors, (0), 0 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 16:15:06,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:15:06,943 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:15:06,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2023-11-17 16:15:07,147 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,SelfDestructingSolverStorable28 [2023-11-17 16:15:07,147 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 16:15:07,147 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:15:07,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1835923477, now seen corresponding path program 23 times [2023-11-17 16:15:07,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:15:07,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853464803] [2023-11-17 16:15:07,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:15:07,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:15:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:15:07,244 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:15:07,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:15:07,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853464803] [2023-11-17 16:15:07,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853464803] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:15:07,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827338217] [2023-11-17 16:15:07,246 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:15:07,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:15:07,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:15:07,263 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 16:15:07,280 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 16:15:07,355 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-17 16:15:07,356 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:15:07,362 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 16:15:07,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:15:07,395 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:15:07,395 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:15:07,478 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 16:15:07,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827338217] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:15:07,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:15:07,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-17 16:15:07,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930179034] [2023-11-17 16:15:07,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:15:07,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 16:15:07,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:15:07,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 16:15:07,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-17 16:15:07,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 161 [2023-11-17 16:15:07,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 1307 transitions, 31784 flow. Second operand has 13 states, 13 states have (on average 70.61538461538461) internal successors, (918), 13 states have internal predecessors, (918), 0 states have call successors, (0), 0 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 16:15:07,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:15:07,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 161 [2023-11-17 16:15:07,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:15:10,208 INFO L124 PetriNetUnfolderBase]: 4376/7500 cut-off events. [2023-11-17 16:15:10,208 INFO L125 PetriNetUnfolderBase]: For 181125/181125 co-relation queries the response was YES. [2023-11-17 16:15:10,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83151 conditions, 7500 events. 4376/7500 cut-off events. For 181125/181125 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 52836 event pairs, 174 based on Foata normal form. 24/7524 useless extension candidates. Maximal degree in co-relation 82566. Up to 3968 conditions per place. [2023-11-17 16:15:10,311 INFO L140 encePairwiseOnDemand]: 156/161 looper letters, 1056 selfloop transitions, 644 changer transitions 123/1823 dead transitions. [2023-11-17 16:15:10,311 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 533 places, 1823 transitions, 48014 flow [2023-11-17 16:15:10,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 16:15:10,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 16:15:10,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 538 transitions. [2023-11-17 16:15:10,312 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47737355811889975 [2023-11-17 16:15:10,312 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 538 transitions. [2023-11-17 16:15:10,312 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 538 transitions. [2023-11-17 16:15:10,312 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:15:10,312 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 538 transitions. [2023-11-17 16:15:10,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 0 states have call successors, (0), 0 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 16:15:10,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 161.0) internal successors, (1288), 8 states have internal predecessors, (1288), 0 states have call successors, (0), 0 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 16:15:10,313 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 161.0) internal successors, (1288), 8 states have internal predecessors, (1288), 0 states have call successors, (0), 0 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 16:15:10,313 INFO L175 Difference]: Start difference. First operand has 527 places, 1307 transitions, 31784 flow. Second operand 7 states and 538 transitions. [2023-11-17 16:15:10,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 533 places, 1823 transitions, 48014 flow [2023-11-17 16:15:13,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 1823 transitions, 47411 flow, removed 203 selfloop flow, removed 22 redundant places. [2023-11-17 16:15:13,893 INFO L231 Difference]: Finished difference. Result has 516 places, 1531 transitions, 39742 flow [2023-11-17 16:15:13,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=31370, PETRI_DIFFERENCE_MINUEND_PLACES=505, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=397, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=681, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=39742, PETRI_PLACES=516, PETRI_TRANSITIONS=1531} [2023-11-17 16:15:13,895 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 496 predicate places. [2023-11-17 16:15:13,895 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 1531 transitions, 39742 flow [2023-11-17 16:15:13,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 70.61538461538461) internal successors, (918), 13 states have internal predecessors, (918), 0 states have call successors, (0), 0 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 16:15:13,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:15:13,895 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:15:13,900 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2023-11-17 16:15:14,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:15:14,096 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 16:15:14,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:15:14,096 INFO L85 PathProgramCache]: Analyzing trace with hash -2133504559, now seen corresponding path program 24 times [2023-11-17 16:15:14,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:15:14,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811331848] [2023-11-17 16:15:14,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:15:14,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:15:14,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:15:14,229 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:15:14,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:15:14,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811331848] [2023-11-17 16:15:14,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811331848] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:15:14,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204424048] [2023-11-17 16:15:14,229 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:15:14,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:15:14,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:15:14,230 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 16:15:14,286 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 16:15:14,331 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-11-17 16:15:14,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:15:14,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 16:15:14,332 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:15:14,399 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:15:14,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:15:14,505 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:15:14,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204424048] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:15:14,506 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:15:14,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 19 [2023-11-17 16:15:14,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81962665] [2023-11-17 16:15:14,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:15:14,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-17 16:15:14,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:15:14,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-17 16:15:14,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2023-11-17 16:15:14,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:15:14,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 1531 transitions, 39742 flow. Second operand has 19 states, 19 states have (on average 66.78947368421052) internal successors, (1269), 19 states have internal predecessors, (1269), 0 states have call successors, (0), 0 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 16:15:14,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:15:14,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:15:14,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:15:19,639 INFO L124 PetriNetUnfolderBase]: 6553/10632 cut-off events. [2023-11-17 16:15:19,639 INFO L125 PetriNetUnfolderBase]: For 256090/256090 co-relation queries the response was YES. [2023-11-17 16:15:19,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127298 conditions, 10632 events. 6553/10632 cut-off events. For 256090/256090 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 73197 event pairs, 123 based on Foata normal form. 30/10662 useless extension candidates. Maximal degree in co-relation 126568. Up to 4470 conditions per place. [2023-11-17 16:15:19,775 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 1503 selfloop transitions, 1128 changer transitions 10/2641 dead transitions. [2023-11-17 16:15:19,776 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 546 places, 2641 transitions, 73004 flow [2023-11-17 16:15:19,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-17 16:15:19,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-17 16:15:19,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2173 transitions. [2023-11-17 16:15:19,777 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4353836906431577 [2023-11-17 16:15:19,778 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 2173 transitions. [2023-11-17 16:15:19,778 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 2173 transitions. [2023-11-17 16:15:19,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:15:19,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 2173 transitions. [2023-11-17 16:15:19,780 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 70.09677419354838) internal successors, (2173), 31 states have internal predecessors, (2173), 0 states have call successors, (0), 0 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 16:15:19,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 161.0) internal successors, (5152), 32 states have internal predecessors, (5152), 0 states have call successors, (0), 0 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 16:15:19,782 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 161.0) internal successors, (5152), 32 states have internal predecessors, (5152), 0 states have call successors, (0), 0 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 16:15:19,782 INFO L175 Difference]: Start difference. First operand has 516 places, 1531 transitions, 39742 flow. Second operand 31 states and 2173 transitions. [2023-11-17 16:15:19,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 546 places, 2641 transitions, 73004 flow [2023-11-17 16:15:25,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 542 places, 2641 transitions, 72025 flow, removed 409 selfloop flow, removed 4 redundant places. [2023-11-17 16:15:25,828 INFO L231 Difference]: Finished difference. Result has 552 places, 2176 transitions, 59450 flow [2023-11-17 16:15:25,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=39117, PETRI_DIFFERENCE_MINUEND_PLACES=512, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=576, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=870, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=59450, PETRI_PLACES=552, PETRI_TRANSITIONS=2176} [2023-11-17 16:15:25,829 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 532 predicate places. [2023-11-17 16:15:25,829 INFO L495 AbstractCegarLoop]: Abstraction has has 552 places, 2176 transitions, 59450 flow [2023-11-17 16:15:25,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 66.78947368421052) internal successors, (1269), 19 states have internal predecessors, (1269), 0 states have call successors, (0), 0 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 16:15:25,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:15:25,830 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:15:25,834 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 16:15:26,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:15:26,034 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 16:15:26,034 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:15:26,034 INFO L85 PathProgramCache]: Analyzing trace with hash -42375271, now seen corresponding path program 25 times [2023-11-17 16:15:26,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:15:26,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770413017] [2023-11-17 16:15:26,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:15:26,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:15:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:15:26,151 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:15:26,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:15:26,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770413017] [2023-11-17 16:15:26,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770413017] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:15:26,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1802818100] [2023-11-17 16:15:26,153 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:15:26,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:15:26,153 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:15:26,154 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 16:15:26,155 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 16:15:26,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:15:26,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 16:15:26,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:15:26,277 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:15:26,278 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:15:26,413 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:15:26,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1802818100] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:15:26,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:15:26,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-11-17 16:15:26,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565242154] [2023-11-17 16:15:26,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:15:26,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 16:15:26,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:15:26,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 16:15:26,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2023-11-17 16:15:26,414 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:15:26,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 552 places, 2176 transitions, 59450 flow. Second operand has 23 states, 23 states have (on average 66.47826086956522) internal successors, (1529), 23 states have internal predecessors, (1529), 0 states have call successors, (0), 0 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 16:15:26,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:15:26,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:15:26,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:15:38,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:15:47,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:15:56,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:16:05,983 INFO L124 PetriNetUnfolderBase]: 7152/11471 cut-off events. [2023-11-17 16:16:05,983 INFO L125 PetriNetUnfolderBase]: For 300129/300129 co-relation queries the response was YES. [2023-11-17 16:16:06,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143358 conditions, 11471 events. 7152/11471 cut-off events. For 300129/300129 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 79010 event pairs, 572 based on Foata normal form. 48/11519 useless extension candidates. Maximal degree in co-relation 142792. Up to 5126 conditions per place. [2023-11-17 16:16:06,170 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 778 selfloop transitions, 2237 changer transitions 58/3073 dead transitions. [2023-11-17 16:16:06,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 624 places, 3073 transitions, 87898 flow [2023-11-17 16:16:06,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2023-11-17 16:16:06,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2023-11-17 16:16:06,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 5070 transitions. [2023-11-17 16:16:06,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43137922232621456 [2023-11-17 16:16:06,173 INFO L72 ComplementDD]: Start complementDD. Operand 73 states and 5070 transitions. [2023-11-17 16:16:06,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 73 states and 5070 transitions. [2023-11-17 16:16:06,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:16:06,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 73 states and 5070 transitions. [2023-11-17 16:16:06,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 74 states, 73 states have (on average 69.45205479452055) internal successors, (5070), 73 states have internal predecessors, (5070), 0 states have call successors, (0), 0 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 16:16:06,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 74 states, 74 states have (on average 161.0) internal successors, (11914), 74 states have internal predecessors, (11914), 0 states have call successors, (0), 0 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 16:16:06,184 INFO L81 ComplementDD]: Finished complementDD. Result has 74 states, 74 states have (on average 161.0) internal successors, (11914), 74 states have internal predecessors, (11914), 0 states have call successors, (0), 0 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 16:16:06,184 INFO L175 Difference]: Start difference. First operand has 552 places, 2176 transitions, 59450 flow. Second operand 73 states and 5070 transitions. [2023-11-17 16:16:06,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 624 places, 3073 transitions, 87898 flow [2023-11-17 16:16:14,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 616 places, 3073 transitions, 85449 flow, removed 1130 selfloop flow, removed 8 redundant places. [2023-11-17 16:16:14,255 INFO L231 Difference]: Finished difference. Result has 624 places, 2822 transitions, 80850 flow [2023-11-17 16:16:14,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=57643, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1612, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=73, PETRI_FLOW=80850, PETRI_PLACES=624, PETRI_TRANSITIONS=2822} [2023-11-17 16:16:14,257 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 604 predicate places. [2023-11-17 16:16:14,257 INFO L495 AbstractCegarLoop]: Abstraction has has 624 places, 2822 transitions, 80850 flow [2023-11-17 16:16:14,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 66.47826086956522) internal successors, (1529), 23 states have internal predecessors, (1529), 0 states have call successors, (0), 0 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 16:16:14,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:16:14,257 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:16:14,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2023-11-17 16:16:14,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:16:14,462 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 16:16:14,462 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:16:14,462 INFO L85 PathProgramCache]: Analyzing trace with hash -286679663, now seen corresponding path program 26 times [2023-11-17 16:16:14,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:16:14,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620543875] [2023-11-17 16:16:14,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:16:14,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:16:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:16:14,586 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:16:14,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:16:14,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620543875] [2023-11-17 16:16:14,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620543875] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:16:14,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486932245] [2023-11-17 16:16:14,587 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:16:14,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:16:14,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:16:14,588 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 16:16:14,617 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 16:16:14,679 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:16:14,679 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:16:14,680 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 16:16:14,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:16:14,753 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:16:14,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:16:14,883 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:16:14,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486932245] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:16:14,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:16:14,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2023-11-17 16:16:14,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242070596] [2023-11-17 16:16:14,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:16:14,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 16:16:14,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:16:14,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 16:16:14,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-11-17 16:16:14,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:16:14,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 624 places, 2822 transitions, 80850 flow. Second operand has 20 states, 20 states have (on average 66.75) internal successors, (1335), 20 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 16:16:14,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:16:14,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:16:14,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:16:23,855 INFO L124 PetriNetUnfolderBase]: 7416/11881 cut-off events. [2023-11-17 16:16:23,856 INFO L125 PetriNetUnfolderBase]: For 303861/303861 co-relation queries the response was YES. [2023-11-17 16:16:23,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151575 conditions, 11881 events. 7416/11881 cut-off events. For 303861/303861 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 82115 event pairs, 493 based on Foata normal form. 62/11943 useless extension candidates. Maximal degree in co-relation 150928. Up to 4535 conditions per place. [2023-11-17 16:16:24,029 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 1767 selfloop transitions, 1492 changer transitions 0/3259 dead transitions. [2023-11-17 16:16:24,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 685 places, 3259 transitions, 96169 flow [2023-11-17 16:16:24,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2023-11-17 16:16:24,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2023-11-17 16:16:24,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 4383 transitions. [2023-11-17 16:16:24,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4321206743566992 [2023-11-17 16:16:24,032 INFO L72 ComplementDD]: Start complementDD. Operand 63 states and 4383 transitions. [2023-11-17 16:16:24,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 4383 transitions. [2023-11-17 16:16:24,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:16:24,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 63 states and 4383 transitions. [2023-11-17 16:16:24,042 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 64 states, 63 states have (on average 69.57142857142857) internal successors, (4383), 63 states have internal predecessors, (4383), 0 states have call successors, (0), 0 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 16:16:24,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 64 states, 64 states have (on average 161.0) internal successors, (10304), 64 states have internal predecessors, (10304), 0 states have call successors, (0), 0 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 16:16:24,065 INFO L81 ComplementDD]: Finished complementDD. Result has 64 states, 64 states have (on average 161.0) internal successors, (10304), 64 states have internal predecessors, (10304), 0 states have call successors, (0), 0 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 16:16:24,065 INFO L175 Difference]: Start difference. First operand has 624 places, 2822 transitions, 80850 flow. Second operand 63 states and 4383 transitions. [2023-11-17 16:16:24,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 685 places, 3259 transitions, 96169 flow [2023-11-17 16:16:34,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 657 places, 3259 transitions, 88471 flow, removed 2975 selfloop flow, removed 28 redundant places. [2023-11-17 16:16:34,309 INFO L231 Difference]: Finished difference. Result has 670 places, 2999 transitions, 82168 flow [2023-11-17 16:16:34,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=74349, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2822, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1335, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=63, PETRI_FLOW=82168, PETRI_PLACES=670, PETRI_TRANSITIONS=2999} [2023-11-17 16:16:34,312 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 650 predicate places. [2023-11-17 16:16:34,312 INFO L495 AbstractCegarLoop]: Abstraction has has 670 places, 2999 transitions, 82168 flow [2023-11-17 16:16:34,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 66.75) internal successors, (1335), 20 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 16:16:34,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:16:34,312 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:16:34,319 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 16:16:34,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:16:34,517 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 16:16:34,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:16:34,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1287705407, now seen corresponding path program 27 times [2023-11-17 16:16:34,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:16:34,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439691365] [2023-11-17 16:16:34,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:16:34,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:16:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:16:34,630 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:16:34,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:16:34,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439691365] [2023-11-17 16:16:34,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439691365] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:16:34,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993904337] [2023-11-17 16:16:34,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:16:34,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:16:34,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:16:34,642 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 16:16:34,643 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 16:16:34,719 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-17 16:16:34,720 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:16:34,720 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 16:16:34,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:16:34,780 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:16:34,781 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:16:34,920 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:16:34,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993904337] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:16:34,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:16:34,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-11-17 16:16:34,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608793048] [2023-11-17 16:16:34,920 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:16:34,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-17 16:16:34,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:16:34,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-17 16:16:34,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2023-11-17 16:16:34,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:16:34,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 670 places, 2999 transitions, 82168 flow. Second operand has 23 states, 23 states have (on average 66.65217391304348) internal successors, (1533), 23 states have internal predecessors, (1533), 0 states have call successors, (0), 0 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 16:16:34,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:16:34,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:16:34,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:17:17,786 INFO L124 PetriNetUnfolderBase]: 8088/12913 cut-off events. [2023-11-17 16:17:17,786 INFO L125 PetriNetUnfolderBase]: For 327166/327166 co-relation queries the response was YES. [2023-11-17 16:17:17,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156824 conditions, 12913 events. 8088/12913 cut-off events. For 327166/327166 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 89265 event pairs, 286 based on Foata normal form. 114/13027 useless extension candidates. Maximal degree in co-relation 156260. Up to 4415 conditions per place. [2023-11-17 16:17:17,980 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 626 selfloop transitions, 2920 changer transitions 10/3556 dead transitions. [2023-11-17 16:17:17,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 764 places, 3556 transitions, 99777 flow [2023-11-17 16:17:17,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2023-11-17 16:17:17,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2023-11-17 16:17:17,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 6606 transitions. [2023-11-17 16:17:17,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43190585158548545 [2023-11-17 16:17:17,985 INFO L72 ComplementDD]: Start complementDD. Operand 95 states and 6606 transitions. [2023-11-17 16:17:17,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 95 states and 6606 transitions. [2023-11-17 16:17:17,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:17:17,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 95 states and 6606 transitions. [2023-11-17 16:17:17,991 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 96 states, 95 states have (on average 69.53684210526316) internal successors, (6606), 95 states have internal predecessors, (6606), 0 states have call successors, (0), 0 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 16:17:17,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 96 states, 96 states have (on average 161.0) internal successors, (15456), 96 states have internal predecessors, (15456), 0 states have call successors, (0), 0 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 16:17:17,998 INFO L81 ComplementDD]: Finished complementDD. Result has 96 states, 96 states have (on average 161.0) internal successors, (15456), 96 states have internal predecessors, (15456), 0 states have call successors, (0), 0 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 16:17:17,998 INFO L175 Difference]: Start difference. First operand has 670 places, 2999 transitions, 82168 flow. Second operand 95 states and 6606 transitions. [2023-11-17 16:17:17,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 764 places, 3556 transitions, 99777 flow [2023-11-17 16:17:28,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 751 places, 3556 transitions, 98267 flow, removed 607 selfloop flow, removed 13 redundant places. [2023-11-17 16:17:28,624 INFO L231 Difference]: Finished difference. Result has 762 places, 3327 transitions, 96117 flow [2023-11-17 16:17:28,626 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=80678, PETRI_DIFFERENCE_MINUEND_PLACES=657, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2990, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2592, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=95, PETRI_FLOW=96117, PETRI_PLACES=762, PETRI_TRANSITIONS=3327} [2023-11-17 16:17:28,626 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 742 predicate places. [2023-11-17 16:17:28,627 INFO L495 AbstractCegarLoop]: Abstraction has has 762 places, 3327 transitions, 96117 flow [2023-11-17 16:17:28,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 66.65217391304348) internal successors, (1533), 23 states have internal predecessors, (1533), 0 states have call successors, (0), 0 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 16:17:28,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:17:28,627 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:17:28,634 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 16:17:28,830 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,SelfDestructingSolverStorable33 [2023-11-17 16:17:28,831 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 16:17:28,831 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:17:28,831 INFO L85 PathProgramCache]: Analyzing trace with hash -1187748161, now seen corresponding path program 28 times [2023-11-17 16:17:28,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:17:28,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311734276] [2023-11-17 16:17:28,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:17:28,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:17:28,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:17:28,952 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:17:28,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:17:28,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311734276] [2023-11-17 16:17:28,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311734276] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:17:28,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998975166] [2023-11-17 16:17:28,952 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 16:17:28,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:17:28,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:17:28,953 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 16:17:28,955 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 16:17:29,020 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 16:17:29,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:17:29,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 16:17:29,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:17:29,154 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:17:29,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:17:29,282 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:17:29,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998975166] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:17:29,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:17:29,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2023-11-17 16:17:29,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623232045] [2023-11-17 16:17:29,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:17:29,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 16:17:29,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:17:29,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 16:17:29,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2023-11-17 16:17:29,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:17:29,285 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 762 places, 3327 transitions, 96117 flow. Second operand has 22 states, 22 states have (on average 66.5) internal successors, (1463), 22 states have internal predecessors, (1463), 0 states have call successors, (0), 0 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 16:17:29,285 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:17:29,285 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:17:29,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:17:47,895 INFO L124 PetriNetUnfolderBase]: 9384/14881 cut-off events. [2023-11-17 16:17:47,895 INFO L125 PetriNetUnfolderBase]: For 394162/394162 co-relation queries the response was YES. [2023-11-17 16:17:48,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191676 conditions, 14881 events. 9384/14881 cut-off events. For 394162/394162 co-relation queries the response was YES. Maximal size of possible extension queue 999. Compared 104228 event pairs, 332 based on Foata normal form. 166/15047 useless extension candidates. Maximal degree in co-relation 191055. Up to 5339 conditions per place. [2023-11-17 16:17:48,129 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 1498 selfloop transitions, 2681 changer transitions 54/4233 dead transitions. [2023-11-17 16:17:48,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 842 places, 4233 transitions, 126779 flow [2023-11-17 16:17:48,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2023-11-17 16:17:48,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2023-11-17 16:17:48,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 5628 transitions. [2023-11-17 16:17:48,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43156199677938806 [2023-11-17 16:17:48,133 INFO L72 ComplementDD]: Start complementDD. Operand 81 states and 5628 transitions. [2023-11-17 16:17:48,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 81 states and 5628 transitions. [2023-11-17 16:17:48,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:17:48,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 81 states and 5628 transitions. [2023-11-17 16:17:48,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 82 states, 81 states have (on average 69.48148148148148) internal successors, (5628), 81 states have internal predecessors, (5628), 0 states have call successors, (0), 0 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 16:17:48,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 82 states, 82 states have (on average 161.0) internal successors, (13202), 82 states have internal predecessors, (13202), 0 states have call successors, (0), 0 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 16:17:48,152 INFO L81 ComplementDD]: Finished complementDD. Result has 82 states, 82 states have (on average 161.0) internal successors, (13202), 82 states have internal predecessors, (13202), 0 states have call successors, (0), 0 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 16:17:48,152 INFO L175 Difference]: Start difference. First operand has 762 places, 3327 transitions, 96117 flow. Second operand 81 states and 5628 transitions. [2023-11-17 16:17:48,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 842 places, 4233 transitions, 126779 flow [2023-11-17 16:18:03,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 805 places, 4233 transitions, 124289 flow, removed 1063 selfloop flow, removed 37 redundant places. [2023-11-17 16:18:03,248 INFO L231 Difference]: Finished difference. Result has 835 places, 3930 transitions, 119428 flow [2023-11-17 16:18:03,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=93690, PETRI_DIFFERENCE_MINUEND_PLACES=725, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=81, PETRI_FLOW=119428, PETRI_PLACES=835, PETRI_TRANSITIONS=3930} [2023-11-17 16:18:03,251 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 815 predicate places. [2023-11-17 16:18:03,251 INFO L495 AbstractCegarLoop]: Abstraction has has 835 places, 3930 transitions, 119428 flow [2023-11-17 16:18:03,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 66.5) internal successors, (1463), 22 states have internal predecessors, (1463), 0 states have call successors, (0), 0 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 16:18:03,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:18:03,252 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:18:03,257 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 16:18:03,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:18:03,457 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 16:18:03,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:18:03,457 INFO L85 PathProgramCache]: Analyzing trace with hash -566789761, now seen corresponding path program 29 times [2023-11-17 16:18:03,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:18:03,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473116750] [2023-11-17 16:18:03,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:18:03,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:18:03,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:18:03,576 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:18:03,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:18:03,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473116750] [2023-11-17 16:18:03,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473116750] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:18:03,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203416658] [2023-11-17 16:18:03,577 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 16:18:03,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:18:03,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:18:03,578 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 16:18:03,585 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 16:18:03,685 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 16:18:03,686 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:18:03,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 16:18:03,687 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:18:03,755 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:18:03,755 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:18:03,890 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:18:03,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203416658] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:18:03,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:18:03,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2023-11-17 16:18:03,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410637874] [2023-11-17 16:18:03,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:18:03,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 16:18:03,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:18:03,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 16:18:03,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2023-11-17 16:18:03,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:18:03,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 835 places, 3930 transitions, 119428 flow. Second operand has 21 states, 21 states have (on average 66.71428571428571) internal successors, (1401), 21 states have internal predecessors, (1401), 0 states have call successors, (0), 0 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 16:18:03,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:18:03,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:18:03,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:18:32,988 INFO L124 PetriNetUnfolderBase]: 9570/15255 cut-off events. [2023-11-17 16:18:32,988 INFO L125 PetriNetUnfolderBase]: For 441342/441342 co-relation queries the response was YES. [2023-11-17 16:18:33,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206463 conditions, 15255 events. 9570/15255 cut-off events. For 441342/441342 co-relation queries the response was YES. Maximal size of possible extension queue 1031. Compared 108369 event pairs, 465 based on Foata normal form. 58/15313 useless extension candidates. Maximal degree in co-relation 205825. Up to 5213 conditions per place. [2023-11-17 16:18:33,279 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 2180 selfloop transitions, 2124 changer transitions 28/4332 dead transitions. [2023-11-17 16:18:33,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 910 places, 4332 transitions, 136078 flow [2023-11-17 16:18:33,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2023-11-17 16:18:33,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2023-11-17 16:18:33,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 5276 transitions. [2023-11-17 16:18:33,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4311866623079438 [2023-11-17 16:18:33,306 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 5276 transitions. [2023-11-17 16:18:33,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 5276 transitions. [2023-11-17 16:18:33,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:18:33,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 5276 transitions. [2023-11-17 16:18:33,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 69.42105263157895) internal successors, (5276), 76 states have internal predecessors, (5276), 0 states have call successors, (0), 0 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 16:18:33,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 161.0) internal successors, (12397), 77 states have internal predecessors, (12397), 0 states have call successors, (0), 0 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 16:18:33,315 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 161.0) internal successors, (12397), 77 states have internal predecessors, (12397), 0 states have call successors, (0), 0 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 16:18:33,316 INFO L175 Difference]: Start difference. First operand has 835 places, 3930 transitions, 119428 flow. Second operand 76 states and 5276 transitions. [2023-11-17 16:18:33,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 910 places, 4332 transitions, 136078 flow [2023-11-17 16:18:51,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 881 places, 4332 transitions, 131616 flow, removed 2008 selfloop flow, removed 29 redundant places. [2023-11-17 16:18:52,014 INFO L231 Difference]: Finished difference. Result has 900 places, 4059 transitions, 124731 flow [2023-11-17 16:18:52,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=115362, PETRI_DIFFERENCE_MINUEND_PLACES=806, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=3930, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1995, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1895, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=124731, PETRI_PLACES=900, PETRI_TRANSITIONS=4059} [2023-11-17 16:18:52,032 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 880 predicate places. [2023-11-17 16:18:52,032 INFO L495 AbstractCegarLoop]: Abstraction has has 900 places, 4059 transitions, 124731 flow [2023-11-17 16:18:52,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 66.71428571428571) internal successors, (1401), 21 states have internal predecessors, (1401), 0 states have call successors, (0), 0 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 16:18:52,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:18:52,032 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:18:52,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2023-11-17 16:18:52,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:18:52,237 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 16:18:52,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:18:52,238 INFO L85 PathProgramCache]: Analyzing trace with hash -760350631, now seen corresponding path program 30 times [2023-11-17 16:18:52,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:18:52,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676859569] [2023-11-17 16:18:52,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:18:52,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:18:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:18:52,421 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:18:52,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:18:52,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676859569] [2023-11-17 16:18:52,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676859569] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:18:52,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606178506] [2023-11-17 16:18:52,422 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 16:18:52,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:18:52,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:18:52,423 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 16:18:52,424 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 16:18:52,521 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 16:18:52,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:18:52,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 16:18:52,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:18:52,586 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:18:52,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:18:52,718 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:18:52,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606178506] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:18:52,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:18:52,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 20 [2023-11-17 16:18:52,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872869906] [2023-11-17 16:18:52,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:18:52,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-17 16:18:52,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:18:52,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-17 16:18:52,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2023-11-17 16:18:52,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:18:52,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 900 places, 4059 transitions, 124731 flow. Second operand has 20 states, 20 states have (on average 66.75) internal successors, (1335), 20 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 16:18:52,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:18:52,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:18:52,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:19:13,330 INFO L124 PetriNetUnfolderBase]: 10809/17356 cut-off events. [2023-11-17 16:19:13,330 INFO L125 PetriNetUnfolderBase]: For 563449/563449 co-relation queries the response was YES. [2023-11-17 16:19:13,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237903 conditions, 17356 events. 10809/17356 cut-off events. For 563449/563449 co-relation queries the response was YES. Maximal size of possible extension queue 1147. Compared 126553 event pairs, 1793 based on Foata normal form. 34/17390 useless extension candidates. Maximal degree in co-relation 237249. Up to 12659 conditions per place. [2023-11-17 16:19:13,673 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 3672 selfloop transitions, 1209 changer transitions 0/4881 dead transitions. [2023-11-17 16:19:13,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 985 places, 4881 transitions, 157091 flow [2023-11-17 16:19:13,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2023-11-17 16:19:13,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2023-11-17 16:19:13,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 5981 transitions. [2023-11-17 16:19:13,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4319659107323415 [2023-11-17 16:19:13,677 INFO L72 ComplementDD]: Start complementDD. Operand 86 states and 5981 transitions. [2023-11-17 16:19:13,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 86 states and 5981 transitions. [2023-11-17 16:19:13,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:19:13,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 86 states and 5981 transitions. [2023-11-17 16:19:13,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 87 states, 86 states have (on average 69.54651162790698) internal successors, (5981), 86 states have internal predecessors, (5981), 0 states have call successors, (0), 0 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 16:19:13,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 87 states, 87 states have (on average 161.0) internal successors, (14007), 87 states have internal predecessors, (14007), 0 states have call successors, (0), 0 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 16:19:13,687 INFO L81 ComplementDD]: Finished complementDD. Result has 87 states, 87 states have (on average 161.0) internal successors, (14007), 87 states have internal predecessors, (14007), 0 states have call successors, (0), 0 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 16:19:13,687 INFO L175 Difference]: Start difference. First operand has 900 places, 4059 transitions, 124731 flow. Second operand 86 states and 5981 transitions. [2023-11-17 16:19:13,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 985 places, 4881 transitions, 157091 flow [2023-11-17 16:19:38,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 956 places, 4881 transitions, 154459 flow, removed 1029 selfloop flow, removed 29 redundant places. [2023-11-17 16:19:38,888 INFO L231 Difference]: Finished difference. Result has 976 places, 4440 transitions, 139011 flow [2023-11-17 16:19:38,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=123041, PETRI_DIFFERENCE_MINUEND_PLACES=871, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4059, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=870, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=3036, PETRI_DIFFERENCE_SUBTRAHEND_STATES=86, PETRI_FLOW=139011, PETRI_PLACES=976, PETRI_TRANSITIONS=4440} [2023-11-17 16:19:38,891 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 956 predicate places. [2023-11-17 16:19:38,891 INFO L495 AbstractCegarLoop]: Abstraction has has 976 places, 4440 transitions, 139011 flow [2023-11-17 16:19:38,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 66.75) internal successors, (1335), 20 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 16:19:38,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:19:38,892 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:19:38,896 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 16:19:39,096 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,SelfDestructingSolverStorable36 [2023-11-17 16:19:39,097 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 16:19:39,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:19:39,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1769818423, now seen corresponding path program 31 times [2023-11-17 16:19:39,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:19:39,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709846573] [2023-11-17 16:19:39,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:19:39,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:19:39,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:19:39,198 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:19:39,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:19:39,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709846573] [2023-11-17 16:19:39,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709846573] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:19:39,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [224190775] [2023-11-17 16:19:39,198 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 16:19:39,198 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:19:39,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:19:39,199 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 16:19:39,201 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 16:19:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:19:39,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 16:19:39,268 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:19:39,345 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:19:39,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:19:39,482 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:19:39,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [224190775] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:19:39,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:19:39,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2023-11-17 16:19:39,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587619638] [2023-11-17 16:19:39,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:19:39,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 16:19:39,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:19:39,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 16:19:39,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=385, Unknown=0, NotChecked=0, Total=462 [2023-11-17 16:19:39,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:19:39,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 976 places, 4440 transitions, 139011 flow. Second operand has 22 states, 22 states have (on average 66.68181818181819) internal successors, (1467), 22 states have internal predecessors, (1467), 0 states have call successors, (0), 0 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 16:19:39,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:19:39,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:19:39,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:20:16,970 INFO L124 PetriNetUnfolderBase]: 12163/19608 cut-off events. [2023-11-17 16:20:16,970 INFO L125 PetriNetUnfolderBase]: For 669890/669890 co-relation queries the response was YES. [2023-11-17 16:20:17,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272596 conditions, 19608 events. 12163/19608 cut-off events. For 669890/669890 co-relation queries the response was YES. Maximal size of possible extension queue 1287. Compared 146871 event pairs, 1754 based on Foata normal form. 56/19664 useless extension candidates. Maximal degree in co-relation 271927. Up to 13122 conditions per place. [2023-11-17 16:20:17,412 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 3618 selfloop transitions, 1678 changer transitions 34/5330 dead transitions. [2023-11-17 16:20:17,412 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1063 places, 5330 transitions, 175477 flow [2023-11-17 16:20:17,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2023-11-17 16:20:17,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2023-11-17 16:20:17,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 6096 transitions. [2023-11-17 16:20:17,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4302653867871259 [2023-11-17 16:20:17,433 INFO L72 ComplementDD]: Start complementDD. Operand 88 states and 6096 transitions. [2023-11-17 16:20:17,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 88 states and 6096 transitions. [2023-11-17 16:20:17,434 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:20:17,434 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 88 states and 6096 transitions. [2023-11-17 16:20:17,438 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 89 states, 88 states have (on average 69.27272727272727) internal successors, (6096), 88 states have internal predecessors, (6096), 0 states have call successors, (0), 0 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 16:20:17,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 89 states, 89 states have (on average 161.0) internal successors, (14329), 89 states have internal predecessors, (14329), 0 states have call successors, (0), 0 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 16:20:17,444 INFO L81 ComplementDD]: Finished complementDD. Result has 89 states, 89 states have (on average 161.0) internal successors, (14329), 89 states have internal predecessors, (14329), 0 states have call successors, (0), 0 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 16:20:17,445 INFO L175 Difference]: Start difference. First operand has 976 places, 4440 transitions, 139011 flow. Second operand 88 states and 6096 transitions. [2023-11-17 16:20:17,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1063 places, 5330 transitions, 175477 flow [2023-11-17 16:20:51,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1035 places, 5330 transitions, 173238 flow, removed 873 selfloop flow, removed 28 redundant places. [2023-11-17 16:20:51,645 INFO L231 Difference]: Finished difference. Result has 1053 places, 4825 transitions, 155766 flow [2023-11-17 16:20:51,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=137001, PETRI_DIFFERENCE_MINUEND_PLACES=948, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1321, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2966, PETRI_DIFFERENCE_SUBTRAHEND_STATES=88, PETRI_FLOW=155766, PETRI_PLACES=1053, PETRI_TRANSITIONS=4825} [2023-11-17 16:20:51,648 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 1033 predicate places. [2023-11-17 16:20:51,648 INFO L495 AbstractCegarLoop]: Abstraction has has 1053 places, 4825 transitions, 155766 flow [2023-11-17 16:20:51,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 66.68181818181819) internal successors, (1467), 22 states have internal predecessors, (1467), 0 states have call successors, (0), 0 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 16:20:51,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:20:51,649 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:20:51,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2023-11-17 16:20:51,853 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,SelfDestructingSolverStorable37 [2023-11-17 16:20:51,854 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 16:20:51,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:20:51,855 INFO L85 PathProgramCache]: Analyzing trace with hash 547375463, now seen corresponding path program 32 times [2023-11-17 16:20:51,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:20:51,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562576619] [2023-11-17 16:20:51,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:20:51,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:20:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:20:51,960 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:20:51,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:20:51,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562576619] [2023-11-17 16:20:51,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562576619] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:20:51,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615182174] [2023-11-17 16:20:51,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 16:20:51,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:20:51,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:20:51,961 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 16:20:51,990 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 16:20:52,038 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 16:20:52,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:20:52,039 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 16:20:52,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:20:52,115 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:20:52,116 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:20:52,242 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:20:52,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615182174] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:20:52,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:20:52,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 11] total 22 [2023-11-17 16:20:52,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874390737] [2023-11-17 16:20:52,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:20:52,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-17 16:20:52,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:20:52,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-17 16:20:52,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2023-11-17 16:20:52,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:20:52,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1053 places, 4825 transitions, 155766 flow. Second operand has 22 states, 22 states have (on average 66.72727272727273) internal successors, (1468), 22 states have internal predecessors, (1468), 0 states have call successors, (0), 0 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 16:20:52,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:20:52,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:20:52,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:20:56,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:21:26,096 INFO L124 PetriNetUnfolderBase]: 13814/22473 cut-off events. [2023-11-17 16:21:26,096 INFO L125 PetriNetUnfolderBase]: For 841468/841468 co-relation queries the response was YES. [2023-11-17 16:21:26,478 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317988 conditions, 22473 events. 13814/22473 cut-off events. For 841468/841468 co-relation queries the response was YES. Maximal size of possible extension queue 1530. Compared 174672 event pairs, 1821 based on Foata normal form. 142/22615 useless extension candidates. Maximal degree in co-relation 317293. Up to 13665 conditions per place. [2023-11-17 16:21:26,768 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 3212 selfloop transitions, 2484 changer transitions 81/5777 dead transitions. [2023-11-17 16:21:26,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1119 places, 5777 transitions, 195953 flow [2023-11-17 16:21:26,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-11-17 16:21:26,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-11-17 16:21:26,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 4630 transitions. [2023-11-17 16:21:26,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4292203578381385 [2023-11-17 16:21:26,772 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 4630 transitions. [2023-11-17 16:21:26,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 4630 transitions. [2023-11-17 16:21:26,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:21:26,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 4630 transitions. [2023-11-17 16:21:26,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 69.1044776119403) internal successors, (4630), 67 states have internal predecessors, (4630), 0 states have call successors, (0), 0 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 16:21:26,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 161.0) internal successors, (10948), 68 states have internal predecessors, (10948), 0 states have call successors, (0), 0 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 16:21:26,780 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 161.0) internal successors, (10948), 68 states have internal predecessors, (10948), 0 states have call successors, (0), 0 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 16:21:26,784 INFO L175 Difference]: Start difference. First operand has 1053 places, 4825 transitions, 155766 flow. Second operand 67 states and 4630 transitions. [2023-11-17 16:21:26,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1119 places, 5777 transitions, 195953 flow [2023-11-17 16:22:10,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1081 places, 5777 transitions, 194040 flow, removed 743 selfloop flow, removed 38 redundant places. [2023-11-17 16:22:10,832 INFO L231 Difference]: Finished difference. Result has 1100 places, 5355 transitions, 180655 flow [2023-11-17 16:22:10,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=153222, PETRI_DIFFERENCE_MINUEND_PLACES=1015, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=4792, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1967, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=2569, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=180655, PETRI_PLACES=1100, PETRI_TRANSITIONS=5355} [2023-11-17 16:22:10,837 INFO L281 CegarLoopForPetriNet]: 20 programPoint places, 1080 predicate places. [2023-11-17 16:22:10,837 INFO L495 AbstractCegarLoop]: Abstraction has has 1100 places, 5355 transitions, 180655 flow [2023-11-17 16:22:10,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 66.72727272727273) internal successors, (1468), 22 states have internal predecessors, (1468), 0 states have call successors, (0), 0 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 16:22:10,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 16:22:10,838 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 16:22:10,843 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 16:22:11,042 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,SelfDestructingSolverStorable38 [2023-11-17 16:22:11,043 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 16:22:11,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 16:22:11,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1044689009, now seen corresponding path program 33 times [2023-11-17 16:22:11,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 16:22:11,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501032910] [2023-11-17 16:22:11,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 16:22:11,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 16:22:11,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 16:22:11,166 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:22:11,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 16:22:11,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501032910] [2023-11-17 16:22:11,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501032910] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 16:22:11,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316366653] [2023-11-17 16:22:11,166 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 16:22:11,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 16:22:11,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 16:22:11,167 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 16:22:11,169 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 16:22:11,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-11-17 16:22:11,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 16:22:11,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-17 16:22:11,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 16:22:11,337 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:22:11,337 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 16:22:11,479 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 16:22:11,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316366653] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 16:22:11,479 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 16:22:11,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2023-11-17 16:22:11,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430285365] [2023-11-17 16:22:11,479 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 16:22:11,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-17 16:22:11,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 16:22:11,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-17 16:22:11,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2023-11-17 16:22:11,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 161 [2023-11-17 16:22:11,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1100 places, 5355 transitions, 180655 flow. Second operand has 21 states, 21 states have (on average 66.71428571428571) internal successors, (1401), 21 states have internal predecessors, (1401), 0 states have call successors, (0), 0 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 16:22:11,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 16:22:11,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 161 [2023-11-17 16:22:11,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 16:22:15,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-17 16:22:54,711 INFO L124 PetriNetUnfolderBase]: 14255/23292 cut-off events. [2023-11-17 16:22:54,711 INFO L125 PetriNetUnfolderBase]: For 873716/873716 co-relation queries the response was YES. [2023-11-17 16:22:55,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340361 conditions, 23292 events. 14255/23292 cut-off events. For 873716/873716 co-relation queries the response was YES. Maximal size of possible extension queue 1550. Compared 182307 event pairs, 3013 based on Foata normal form. 40/23332 useless extension candidates. Maximal degree in co-relation 339655. Up to 18893 conditions per place. [2023-11-17 16:22:55,331 INFO L140 encePairwiseOnDemand]: 155/161 looper letters, 4663 selfloop transitions, 1051 changer transitions 58/5772 dead transitions. [2023-11-17 16:22:55,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1163 places, 5772 transitions, 203469 flow [2023-11-17 16:22:55,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2023-11-17 16:22:55,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2023-11-17 16:22:55,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 4436 transitions. [2023-11-17 16:22:55,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43051242236024845 [2023-11-17 16:22:55,334 INFO L72 ComplementDD]: Start complementDD. Operand 64 states and 4436 transitions. [2023-11-17 16:22:55,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 64 states and 4436 transitions. [2023-11-17 16:22:55,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 16:22:55,335 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 64 states and 4436 transitions. [2023-11-17 16:22:55,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 65 states, 64 states have (on average 69.3125) internal successors, (4436), 64 states have internal predecessors, (4436), 0 states have call successors, (0), 0 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 16:22:55,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 65 states, 65 states have (on average 161.0) internal successors, (10465), 65 states have internal predecessors, (10465), 0 states have call successors, (0), 0 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 16:22:55,342 INFO L81 ComplementDD]: Finished complementDD. Result has 65 states, 65 states have (on average 161.0) internal successors, (10465), 65 states have internal predecessors, (10465), 0 states have call successors, (0), 0 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 16:22:55,342 INFO L175 Difference]: Start difference. First operand has 1100 places, 5355 transitions, 180655 flow. Second operand 64 states and 4436 transitions. [2023-11-17 16:22:55,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1163 places, 5772 transitions, 203469 flow Received shutdown request... [2023-11-17 16:23:05,416 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-17 16:23:05,433 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 16:23:05,439 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 16:23:05,440 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 16:23:05,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2023-11-17 16:23:05,621 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-11-17 16:23:05,626 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-17 16:23:05,626 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-17 16:23:05,627 INFO L445 BasicCegarLoop]: Path program histogram: [33, 6, 1] [2023-11-17 16:23:05,629 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 16:23:05,629 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 16:23:05,634 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 04:23:05 BasicIcfg [2023-11-17 16:23:05,634 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 16:23:05,635 INFO L158 Benchmark]: Toolchain (without parser) took 540013.53ms. Allocated memory was 259.0MB in the beginning and 5.6GB in the end (delta: 5.4GB). Free memory was 223.5MB in the beginning and 4.2GB in the end (delta: -4.0GB). Peak memory consumption was 4.4GB. Max. memory is 8.0GB. [2023-11-17 16:23:05,635 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 176.2MB. Free memory is still 126.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 16:23:05,635 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.98ms. Allocated memory is still 259.0MB. Free memory was 223.2MB in the beginning and 212.1MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 16:23:05,635 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.39ms. Allocated memory is still 259.0MB. Free memory was 212.1MB in the beginning and 210.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 16:23:05,636 INFO L158 Benchmark]: Boogie Preprocessor took 27.58ms. Allocated memory is still 259.0MB. Free memory was 210.6MB in the beginning and 209.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 16:23:05,636 INFO L158 Benchmark]: RCFGBuilder took 299.01ms. Allocated memory is still 259.0MB. Free memory was 209.0MB in the beginning and 194.8MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2023-11-17 16:23:05,636 INFO L158 Benchmark]: TraceAbstraction took 539448.15ms. Allocated memory was 259.0MB in the beginning and 5.6GB in the end (delta: 5.4GB). Free memory was 193.8MB in the beginning and 4.2GB in the end (delta: -4.0GB). Peak memory consumption was 4.4GB. Max. memory is 8.0GB. [2023-11-17 16:23:05,645 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 176.2MB. Free memory is still 126.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 206.98ms. Allocated memory is still 259.0MB. Free memory was 223.2MB in the beginning and 212.1MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 26.39ms. Allocated memory is still 259.0MB. Free memory was 212.1MB in the beginning and 210.6MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.58ms. Allocated memory is still 259.0MB. Free memory was 210.6MB in the beginning and 209.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 299.01ms. Allocated memory is still 259.0MB. Free memory was 209.0MB in the beginning and 194.8MB in the end (delta: 14.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 539448.15ms. Allocated memory was 259.0MB in the beginning and 5.6GB in the end (delta: 5.4GB). Free memory was 193.8MB in the beginning and 4.2GB in the end (delta: -4.0GB). Peak memory consumption was 4.4GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 79 PlacesBefore, 20 PlacesAfterwards, 78 TransitionsBefore, 15 TransitionsAfterwards, 648 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 21 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 4 ConcurrentYvCompositions, 4 ChoiceCompositions, 72 TotalNumberOfCompositions, 647 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 618, independent: 614, independent conditional: 0, independent unconditional: 614, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 441, independent: 437, independent conditional: 0, independent unconditional: 437, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 441, independent: 437, independent conditional: 0, independent unconditional: 437, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 4, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 4, dependent conditional: 0, dependent unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 33, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 618, independent: 177, independent conditional: 0, independent unconditional: 177, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 441, unknown conditional: 0, unknown unconditional: 441] , 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: 76]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 70]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 71]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 108 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: 539.3s, OverallIterations: 40, TraceHistogramMax: 4, PathProgramHistogramMax: 33, EmptinessCheckTime: 0.0s, AutomataDifference: 517.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 5 mSolverCounterUnknown, 4131 SdHoareTripleChecker+Valid, 32.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4131 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 30.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1058 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 23722 IncrementalHoareTripleChecker+Invalid, 24785 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1058 mSolverCounterUnsat, 0 mSDtfsCounter, 23722 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2623 GetRequests, 1051 SyntacticMatches, 73 SemanticMatches, 1499 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27603 ImplicationChecksByTransitivity, 117.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=180655occurred in iteration=39, InterpolantAutomatonStates: 1316, 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: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 1333 NumberOfCodeBlocks, 1322 NumberOfCodeBlocksAsserted, 124 NumberOfCheckSat, 1860 ConstructedInterpolants, 0 QuantifiedInterpolants, 11609 SizeOfPredicates, 54 NumberOfNonLiveVariables, 4822 ConjunctsInSsa, 497 ConjunctsInUnsatCore, 112 InterpolantComputations, 5 PerfectInterpolantSequences, 124/987 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown [2023-11-17 16:23:05,679 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 0 !ENTRY org.eclipse.osgi 4 0 2023-11-17 16:23:05.878 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/770e868f8/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:190) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/770e868f8/.metadata/.log.