/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 07:44:07,131 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 07:44:07,197 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 07:44:07,201 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 07:44:07,201 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 07:44:07,223 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 07:44:07,223 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 07:44:07,224 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 07:44:07,224 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 07:44:07,227 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 07:44:07,227 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 07:44:07,227 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 07:44:07,227 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 07:44:07,228 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 07:44:07,228 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 07:44:07,228 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 07:44:07,229 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 07:44:07,229 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 07:44:07,229 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 07:44:07,229 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 07:44:07,229 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 07:44:07,230 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 07:44:07,230 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 07:44:07,230 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 07:44:07,230 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 07:44:07,230 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 07:44:07,231 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 07:44:07,231 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 07:44:07,231 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 07:44:07,231 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 07:44:07,232 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 07:44:07,232 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 07:44:07,232 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 07:44:07,232 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 07:44:07,232 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 07:44:07,232 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-24 07:44:07,435 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 07:44:07,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 07:44:07,452 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 07:44:07,453 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 07:44:07,453 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 07:44:07,454 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c [2023-08-24 07:44:08,439 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 07:44:08,606 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 07:44:08,606 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-nzb-file-trans.wvr.c [2023-08-24 07:44:08,612 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d699041d/271e8b7f73454bc3a12846a8841f6d04/FLAGc69d9afdf [2023-08-24 07:44:08,622 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d699041d/271e8b7f73454bc3a12846a8841f6d04 [2023-08-24 07:44:08,623 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 07:44:08,624 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 07:44:08,625 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 07:44:08,625 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 07:44:08,626 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 07:44:08,627 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 07:44:08" (1/1) ... [2023-08-24 07:44:08,627 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32c271f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:44:08, skipping insertion in model container [2023-08-24 07:44:08,628 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 07:44:08" (1/1) ... [2023-08-24 07:44:08,643 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 07:44:08,766 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/chl-nzb-file-trans.wvr.c[6450,6463] [2023-08-24 07:44:08,773 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 07:44:08,779 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 07:44:08,811 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/chl-nzb-file-trans.wvr.c[6450,6463] [2023-08-24 07:44:08,814 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 07:44:08,834 INFO L206 MainTranslator]: Completed translation [2023-08-24 07:44:08,834 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:44:08 WrapperNode [2023-08-24 07:44:08,834 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 07:44:08,836 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 07:44:08,836 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 07:44:08,836 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 07:44:08,840 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:44:08" (1/1) ... [2023-08-24 07:44:08,864 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:44:08" (1/1) ... [2023-08-24 07:44:08,901 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 604 [2023-08-24 07:44:08,901 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 07:44:08,902 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 07:44:08,902 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 07:44:08,902 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 07:44:08,910 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:44:08" (1/1) ... [2023-08-24 07:44:08,910 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:44:08" (1/1) ... [2023-08-24 07:44:08,916 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:44:08" (1/1) ... [2023-08-24 07:44:08,916 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:44:08" (1/1) ... [2023-08-24 07:44:08,940 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:44:08" (1/1) ... [2023-08-24 07:44:08,944 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:44:08" (1/1) ... [2023-08-24 07:44:08,946 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:44:08" (1/1) ... [2023-08-24 07:44:08,947 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:44:08" (1/1) ... [2023-08-24 07:44:08,964 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 07:44:08,965 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 07:44:08,965 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 07:44:08,965 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 07:44:08,966 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:44:08" (1/1) ... [2023-08-24 07:44:08,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 07:44:08,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:44:08,992 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 07:44:08,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 07:44:09,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 07:44:09,019 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 07:44:09,019 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 07:44:09,019 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 07:44:09,020 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 07:44:09,020 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 07:44:09,020 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 07:44:09,020 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 07:44:09,020 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 07:44:09,020 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 07:44:09,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 07:44:09,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 07:44:09,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 07:44:09,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 07:44:09,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 07:44:09,041 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 07:44:09,150 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 07:44:09,151 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 07:44:09,710 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 07:44:09,717 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 07:44:09,717 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-24 07:44:09,718 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 07:44:09 BoogieIcfgContainer [2023-08-24 07:44:09,718 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 07:44:09,720 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 07:44:09,720 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 07:44:09,729 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 07:44:09,729 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 07:44:08" (1/3) ... [2023-08-24 07:44:09,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d64e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 07:44:09, skipping insertion in model container [2023-08-24 07:44:09,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 07:44:08" (2/3) ... [2023-08-24 07:44:09,730 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d64e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 07:44:09, skipping insertion in model container [2023-08-24 07:44:09,730 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 07:44:09" (3/3) ... [2023-08-24 07:44:09,731 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-trans.wvr.c [2023-08-24 07:44:09,741 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 07:44:09,741 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 07:44:09,741 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 07:44:09,867 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 07:44:09,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 657 places, 720 transitions, 1464 flow [2023-08-24 07:44:10,154 INFO L124 PetriNetUnfolderBase]: 73/717 cut-off events. [2023-08-24 07:44:10,154 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 07:44:10,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 717 events. 73/717 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2387 event pairs, 0 based on Foata normal form. 0/643 useless extension candidates. Maximal degree in co-relation 535. Up to 2 conditions per place. [2023-08-24 07:44:10,168 INFO L82 GeneralOperation]: Start removeDead. Operand has 657 places, 720 transitions, 1464 flow [2023-08-24 07:44:10,178 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 644 places, 707 transitions, 1432 flow [2023-08-24 07:44:10,181 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 07:44:10,193 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 644 places, 707 transitions, 1432 flow [2023-08-24 07:44:10,195 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 644 places, 707 transitions, 1432 flow [2023-08-24 07:44:10,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 644 places, 707 transitions, 1432 flow [2023-08-24 07:44:10,321 INFO L124 PetriNetUnfolderBase]: 73/707 cut-off events. [2023-08-24 07:44:10,321 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 07:44:10,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 720 conditions, 707 events. 73/707 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2389 event pairs, 0 based on Foata normal form. 0/634 useless extension candidates. Maximal degree in co-relation 535. Up to 2 conditions per place. [2023-08-24 07:44:10,393 INFO L119 LiptonReduction]: Number of co-enabled transitions 157248 [2023-08-24 07:44:31,848 INFO L134 LiptonReduction]: Checked pairs total: 151635 [2023-08-24 07:44:31,849 INFO L136 LiptonReduction]: Total number of compositions: 895 [2023-08-24 07:44:31,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 07:44:31,861 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3e4156fc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 07:44:31,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 07:44:31,875 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 07:44:31,875 INFO L124 PetriNetUnfolderBase]: 13/48 cut-off events. [2023-08-24 07:44:31,875 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 07:44:31,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:31,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:31,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:44:31,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:31,879 INFO L85 PathProgramCache]: Analyzing trace with hash -544715285, now seen corresponding path program 1 times [2023-08-24 07:44:31,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:31,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257481758] [2023-08-24 07:44:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:31,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:32,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 07:44:32,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:32,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257481758] [2023-08-24 07:44:32,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257481758] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:44:32,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:44:32,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 07:44:32,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032225378] [2023-08-24 07:44:32,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:44:32,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 07:44:32,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:44:32,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 07:44:32,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 07:44:32,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 643 out of 1615 [2023-08-24 07:44:32,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 49 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 649.3333333333334) internal successors, (1948), 3 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:32,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:44:32,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 643 of 1615 [2023-08-24 07:44:32,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:32,703 INFO L124 PetriNetUnfolderBase]: 2694/3589 cut-off events. [2023-08-24 07:44:32,703 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2023-08-24 07:44:32,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7439 conditions, 3589 events. 2694/3589 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12602 event pairs, 1657 based on Foata normal form. 0/2552 useless extension candidates. Maximal degree in co-relation 6908. Up to 3587 conditions per place. [2023-08-24 07:44:32,715 INFO L140 encePairwiseOnDemand]: 1607/1615 looper letters, 45 selfloop transitions, 6 changer transitions 0/51 dead transitions. [2023-08-24 07:44:32,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 51 transitions, 222 flow [2023-08-24 07:44:32,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 07:44:32,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 07:44:32,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1984 transitions. [2023-08-24 07:44:32,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40949432404540764 [2023-08-24 07:44:32,729 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1984 transitions. [2023-08-24 07:44:32,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1984 transitions. [2023-08-24 07:44:32,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:32,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1984 transitions. [2023-08-24 07:44:32,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 661.3333333333334) internal successors, (1984), 3 states have internal predecessors, (1984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:32,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1615.0) internal successors, (6460), 4 states have internal predecessors, (6460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:32,747 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1615.0) internal successors, (6460), 4 states have internal predecessors, (6460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:32,749 INFO L175 Difference]: Start difference. First operand has 46 places, 49 transitions, 116 flow. Second operand 3 states and 1984 transitions. [2023-08-24 07:44:32,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 51 transitions, 222 flow [2023-08-24 07:44:32,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 51 transitions, 210 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 07:44:32,754 INFO L231 Difference]: Finished difference. Result has 43 places, 51 transitions, 134 flow [2023-08-24 07:44:32,755 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1615, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=43, PETRI_TRANSITIONS=51} [2023-08-24 07:44:32,757 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-08-24 07:44:32,757 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 51 transitions, 134 flow [2023-08-24 07:44:32,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 649.3333333333334) internal successors, (1948), 3 states have internal predecessors, (1948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:32,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:32,759 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:32,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 07:44:32,759 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:44:32,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:32,759 INFO L85 PathProgramCache]: Analyzing trace with hash -705807123, now seen corresponding path program 1 times [2023-08-24 07:44:32,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:32,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289910335] [2023-08-24 07:44:32,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:32,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 07:44:32,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:32,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289910335] [2023-08-24 07:44:32,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289910335] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:44:32,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169685612] [2023-08-24 07:44:32,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:32,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:44:32,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:44:32,858 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:44:32,863 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 07:44:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:32,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-24 07:44:32,990 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:44:33,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 07:44:33,021 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:44:33,036 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 07:44:33,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169685612] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 07:44:33,037 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 07:44:33,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-24 07:44:33,037 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487365523] [2023-08-24 07:44:33,037 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 07:44:33,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-24 07:44:33,038 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:44:33,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-24 07:44:33,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-24 07:44:33,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 643 out of 1615 [2023-08-24 07:44:33,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 51 transitions, 134 flow. Second operand has 8 states, 8 states have (on average 646.5) internal successors, (5172), 8 states have internal predecessors, (5172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:33,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:44:33,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 643 of 1615 [2023-08-24 07:44:33,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:33,518 INFO L124 PetriNetUnfolderBase]: 2694/3598 cut-off events. [2023-08-24 07:44:33,518 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-24 07:44:33,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7333 conditions, 3598 events. 2694/3598 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 12611 event pairs, 1657 based on Foata normal form. 6/2569 useless extension candidates. Maximal degree in co-relation 7284. Up to 3587 conditions per place. [2023-08-24 07:44:33,531 INFO L140 encePairwiseOnDemand]: 1608/1615 looper letters, 45 selfloop transitions, 15 changer transitions 0/60 dead transitions. [2023-08-24 07:44:33,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 60 transitions, 290 flow [2023-08-24 07:44:33,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 07:44:33,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 07:44:33,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3927 transitions. [2023-08-24 07:44:33,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4052631578947368 [2023-08-24 07:44:33,538 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3927 transitions. [2023-08-24 07:44:33,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3927 transitions. [2023-08-24 07:44:33,539 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:33,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3927 transitions. [2023-08-24 07:44:33,545 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 654.5) internal successors, (3927), 6 states have internal predecessors, (3927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:33,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1615.0) internal successors, (11305), 7 states have internal predecessors, (11305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:33,560 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1615.0) internal successors, (11305), 7 states have internal predecessors, (11305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:33,563 INFO L175 Difference]: Start difference. First operand has 43 places, 51 transitions, 134 flow. Second operand 6 states and 3927 transitions. [2023-08-24 07:44:33,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 60 transitions, 290 flow [2023-08-24 07:44:33,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 60 transitions, 284 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 07:44:33,565 INFO L231 Difference]: Finished difference. Result has 50 places, 60 transitions, 224 flow [2023-08-24 07:44:33,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1615, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=224, PETRI_PLACES=50, PETRI_TRANSITIONS=60} [2023-08-24 07:44:33,565 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 4 predicate places. [2023-08-24 07:44:33,565 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 60 transitions, 224 flow [2023-08-24 07:44:33,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 646.5) internal successors, (5172), 8 states have internal predecessors, (5172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:33,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:33,568 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:33,574 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-24 07:44:33,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:44:33,773 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:44:33,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:33,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1135023085, now seen corresponding path program 2 times [2023-08-24 07:44:33,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:33,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578899129] [2023-08-24 07:44:33,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:33,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:33,953 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-24 07:44:33,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:33,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578899129] [2023-08-24 07:44:33,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578899129] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:44:33,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043652488] [2023-08-24 07:44:33,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 07:44:33,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:44:33,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:44:33,954 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:44:33,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 07:44:34,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-24 07:44:34,086 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 07:44:34,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 07:44:34,091 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:44:34,868 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 07:44:34,868 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 07:44:34,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043652488] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:44:34,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 07:44:34,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-08-24 07:44:34,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881923261] [2023-08-24 07:44:34,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:44:34,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:44:34,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:44:34,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:44:34,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-24 07:44:34,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 618 out of 1615 [2023-08-24 07:44:34,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 60 transitions, 224 flow. Second operand has 5 states, 5 states have (on average 622.4) internal successors, (3112), 5 states have internal predecessors, (3112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:34,874 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:44:34,874 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 618 of 1615 [2023-08-24 07:44:34,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:35,849 INFO L124 PetriNetUnfolderBase]: 3034/4117 cut-off events. [2023-08-24 07:44:35,849 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-08-24 07:44:35,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8413 conditions, 4117 events. 3034/4117 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 15798 event pairs, 1657 based on Foata normal form. 1/2930 useless extension candidates. Maximal degree in co-relation 8325. Up to 3517 conditions per place. [2023-08-24 07:44:35,861 INFO L140 encePairwiseOnDemand]: 1611/1615 looper letters, 98 selfloop transitions, 2 changer transitions 7/107 dead transitions. [2023-08-24 07:44:35,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 107 transitions, 544 flow [2023-08-24 07:44:35,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 07:44:35,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 07:44:35,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3186 transitions. [2023-08-24 07:44:35,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3945510835913313 [2023-08-24 07:44:35,867 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3186 transitions. [2023-08-24 07:44:35,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3186 transitions. [2023-08-24 07:44:35,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:35,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3186 transitions. [2023-08-24 07:44:35,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 637.2) internal successors, (3186), 5 states have internal predecessors, (3186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:35,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1615.0) internal successors, (9690), 6 states have internal predecessors, (9690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:35,883 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1615.0) internal successors, (9690), 6 states have internal predecessors, (9690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:35,883 INFO L175 Difference]: Start difference. First operand has 50 places, 60 transitions, 224 flow. Second operand 5 states and 3186 transitions. [2023-08-24 07:44:35,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 107 transitions, 544 flow [2023-08-24 07:44:35,885 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 107 transitions, 520 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-08-24 07:44:35,886 INFO L231 Difference]: Finished difference. Result has 56 places, 61 transitions, 215 flow [2023-08-24 07:44:35,886 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1615, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=215, PETRI_PLACES=56, PETRI_TRANSITIONS=61} [2023-08-24 07:44:35,886 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 10 predicate places. [2023-08-24 07:44:35,887 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 61 transitions, 215 flow [2023-08-24 07:44:35,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 622.4) internal successors, (3112), 5 states have internal predecessors, (3112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:35,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:35,888 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:35,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 07:44:36,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-24 07:44:36,093 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:44:36,093 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:36,093 INFO L85 PathProgramCache]: Analyzing trace with hash -142941975, now seen corresponding path program 3 times [2023-08-24 07:44:36,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:36,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530310600] [2023-08-24 07:44:36,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:36,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:36,223 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-24 07:44:36,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:36,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530310600] [2023-08-24 07:44:36,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530310600] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:44:36,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049742726] [2023-08-24 07:44:36,224 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 07:44:36,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:44:36,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:44:36,225 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:44:36,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 07:44:36,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-24 07:44:36,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 07:44:36,364 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 07:44:36,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:44:36,961 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-24 07:44:36,961 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-24 07:44:36,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049742726] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:44:36,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-24 07:44:36,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 10 [2023-08-24 07:44:36,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771796364] [2023-08-24 07:44:36,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:44:36,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:44:36,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:44:36,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:44:36,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-08-24 07:44:36,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 618 out of 1615 [2023-08-24 07:44:36,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 61 transitions, 215 flow. Second operand has 5 states, 5 states have (on average 622.4) internal successors, (3112), 5 states have internal predecessors, (3112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:36,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:44:36,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 618 of 1615 [2023-08-24 07:44:36,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:37,951 INFO L124 PetriNetUnfolderBase]: 3224/4457 cut-off events. [2023-08-24 07:44:37,951 INFO L125 PetriNetUnfolderBase]: For 719/719 co-relation queries the response was YES. [2023-08-24 07:44:37,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9603 conditions, 4457 events. 3224/4457 cut-off events. For 719/719 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 18151 event pairs, 1919 based on Foata normal form. 1/3672 useless extension candidates. Maximal degree in co-relation 9571. Up to 3969 conditions per place. [2023-08-24 07:44:37,965 INFO L140 encePairwiseOnDemand]: 1611/1615 looper letters, 101 selfloop transitions, 3 changer transitions 7/111 dead transitions. [2023-08-24 07:44:37,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 111 transitions, 559 flow [2023-08-24 07:44:37,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 07:44:37,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 07:44:37,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3189 transitions. [2023-08-24 07:44:37,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39492260061919504 [2023-08-24 07:44:37,971 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3189 transitions. [2023-08-24 07:44:37,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3189 transitions. [2023-08-24 07:44:37,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:37,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3189 transitions. [2023-08-24 07:44:37,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 637.8) internal successors, (3189), 5 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:37,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1615.0) internal successors, (9690), 6 states have internal predecessors, (9690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:37,985 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1615.0) internal successors, (9690), 6 states have internal predecessors, (9690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:37,985 INFO L175 Difference]: Start difference. First operand has 56 places, 61 transitions, 215 flow. Second operand 5 states and 3189 transitions. [2023-08-24 07:44:37,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 111 transitions, 559 flow [2023-08-24 07:44:37,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 111 transitions, 550 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-24 07:44:37,989 INFO L231 Difference]: Finished difference. Result has 60 places, 62 transitions, 232 flow [2023-08-24 07:44:37,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1615, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=232, PETRI_PLACES=60, PETRI_TRANSITIONS=62} [2023-08-24 07:44:37,989 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 14 predicate places. [2023-08-24 07:44:37,989 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 62 transitions, 232 flow [2023-08-24 07:44:37,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 622.4) internal successors, (3112), 5 states have internal predecessors, (3112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:37,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:37,990 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:37,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 07:44:38,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:44:38,195 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:44:38,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:38,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1411267767, now seen corresponding path program 4 times [2023-08-24 07:44:38,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:38,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490321385] [2023-08-24 07:44:38,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:38,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:38,343 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-24 07:44:38,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:38,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490321385] [2023-08-24 07:44:38,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490321385] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:44:38,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1290807429] [2023-08-24 07:44:38,346 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 07:44:38,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:44:38,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:44:38,347 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:44:38,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 07:44:38,636 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 07:44:38,636 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 07:44:38,638 INFO L262 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 07:44:38,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:44:38,693 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-24 07:44:38,693 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:44:38,753 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-24 07:44:38,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1290807429] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 07:44:38,754 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 07:44:38,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-08-24 07:44:38,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076486381] [2023-08-24 07:44:38,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 07:44:38,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-24 07:44:38,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:44:38,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-24 07:44:38,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-08-24 07:44:38,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 643 out of 1615 [2023-08-24 07:44:38,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 62 transitions, 232 flow. Second operand has 17 states, 17 states have (on average 645.1764705882352) internal successors, (10968), 17 states have internal predecessors, (10968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:38,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:44:38,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 643 of 1615 [2023-08-24 07:44:38,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:39,399 INFO L124 PetriNetUnfolderBase]: 3223/4452 cut-off events. [2023-08-24 07:44:39,399 INFO L125 PetriNetUnfolderBase]: For 1844/1844 co-relation queries the response was YES. [2023-08-24 07:44:39,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10113 conditions, 4452 events. 3223/4452 cut-off events. For 1844/1844 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 17872 event pairs, 2136 based on Foata normal form. 1/3667 useless extension candidates. Maximal degree in co-relation 10079. Up to 4438 conditions per place. [2023-08-24 07:44:39,413 INFO L140 encePairwiseOnDemand]: 1608/1615 looper letters, 47 selfloop transitions, 18 changer transitions 0/65 dead transitions. [2023-08-24 07:44:39,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 380 flow [2023-08-24 07:44:39,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 07:44:39,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 07:44:39,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4567 transitions. [2023-08-24 07:44:39,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4039805395842547 [2023-08-24 07:44:39,421 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4567 transitions. [2023-08-24 07:44:39,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4567 transitions. [2023-08-24 07:44:39,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:39,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4567 transitions. [2023-08-24 07:44:39,428 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 652.4285714285714) internal successors, (4567), 7 states have internal predecessors, (4567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:39,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 1615.0) internal successors, (12920), 8 states have internal predecessors, (12920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:39,438 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 1615.0) internal successors, (12920), 8 states have internal predecessors, (12920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:39,438 INFO L175 Difference]: Start difference. First operand has 60 places, 62 transitions, 232 flow. Second operand 7 states and 4567 transitions. [2023-08-24 07:44:39,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 380 flow [2023-08-24 07:44:39,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 65 transitions, 374 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-24 07:44:39,441 INFO L231 Difference]: Finished difference. Result has 64 places, 65 transitions, 294 flow [2023-08-24 07:44:39,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1615, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=294, PETRI_PLACES=64, PETRI_TRANSITIONS=65} [2023-08-24 07:44:39,442 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2023-08-24 07:44:39,442 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 65 transitions, 294 flow [2023-08-24 07:44:39,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 645.1764705882352) internal successors, (10968), 17 states have internal predecessors, (10968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:39,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:39,444 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:39,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 07:44:39,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:44:39,649 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:44:39,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:39,650 INFO L85 PathProgramCache]: Analyzing trace with hash 520294367, now seen corresponding path program 5 times [2023-08-24 07:44:39,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:39,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157419219] [2023-08-24 07:44:39,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:39,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:40,288 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 07:44:40,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:40,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157419219] [2023-08-24 07:44:40,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157419219] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:44:40,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:44:40,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 07:44:40,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46774269] [2023-08-24 07:44:40,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:44:40,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:44:40,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:44:40,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:44:40,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 07:44:40,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 618 out of 1615 [2023-08-24 07:44:40,292 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 65 transitions, 294 flow. Second operand has 5 states, 5 states have (on average 622.4) internal successors, (3112), 5 states have internal predecessors, (3112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:40,292 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:44:40,292 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 618 of 1615 [2023-08-24 07:44:40,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:41,161 INFO L124 PetriNetUnfolderBase]: 3898/5538 cut-off events. [2023-08-24 07:44:41,162 INFO L125 PetriNetUnfolderBase]: For 1202/1202 co-relation queries the response was YES. [2023-08-24 07:44:41,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12147 conditions, 5538 events. 3898/5538 cut-off events. For 1202/1202 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 25447 event pairs, 2135 based on Foata normal form. 1/4567 useless extension candidates. Maximal degree in co-relation 12034. Up to 4114 conditions per place. [2023-08-24 07:44:41,179 INFO L140 encePairwiseOnDemand]: 1603/1615 looper letters, 123 selfloop transitions, 14 changer transitions 4/141 dead transitions. [2023-08-24 07:44:41,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 141 transitions, 759 flow [2023-08-24 07:44:41,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 07:44:41,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 07:44:41,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3214 transitions. [2023-08-24 07:44:41,185 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39801857585139316 [2023-08-24 07:44:41,185 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3214 transitions. [2023-08-24 07:44:41,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3214 transitions. [2023-08-24 07:44:41,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:41,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3214 transitions. [2023-08-24 07:44:41,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 642.8) internal successors, (3214), 5 states have internal predecessors, (3214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:41,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1615.0) internal successors, (9690), 6 states have internal predecessors, (9690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:41,197 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1615.0) internal successors, (9690), 6 states have internal predecessors, (9690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:41,197 INFO L175 Difference]: Start difference. First operand has 64 places, 65 transitions, 294 flow. Second operand 5 states and 3214 transitions. [2023-08-24 07:44:41,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 141 transitions, 759 flow [2023-08-24 07:44:41,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 141 transitions, 723 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-24 07:44:41,202 INFO L231 Difference]: Finished difference. Result has 67 places, 77 transitions, 374 flow [2023-08-24 07:44:41,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1615, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=374, PETRI_PLACES=67, PETRI_TRANSITIONS=77} [2023-08-24 07:44:41,202 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2023-08-24 07:44:41,202 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 77 transitions, 374 flow [2023-08-24 07:44:41,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 622.4) internal successors, (3112), 5 states have internal predecessors, (3112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:41,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:41,203 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:41,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 07:44:41,203 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:44:41,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:41,204 INFO L85 PathProgramCache]: Analyzing trace with hash -95749075, now seen corresponding path program 6 times [2023-08-24 07:44:41,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:41,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351532249] [2023-08-24 07:44:41,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:41,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:41,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:41,729 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 07:44:41,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:41,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351532249] [2023-08-24 07:44:41,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351532249] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:44:41,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:44:41,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 07:44:41,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048776200] [2023-08-24 07:44:41,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:44:41,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:44:41,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:44:41,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:44:41,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 07:44:41,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 618 out of 1615 [2023-08-24 07:44:41,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 77 transitions, 374 flow. Second operand has 5 states, 5 states have (on average 622.4) internal successors, (3112), 5 states have internal predecessors, (3112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:41,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:44:41,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 618 of 1615 [2023-08-24 07:44:41,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:42,587 INFO L124 PetriNetUnfolderBase]: 4036/5744 cut-off events. [2023-08-24 07:44:42,587 INFO L125 PetriNetUnfolderBase]: For 4958/4958 co-relation queries the response was YES. [2023-08-24 07:44:42,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14674 conditions, 5744 events. 4036/5744 cut-off events. For 4958/4958 co-relation queries the response was YES. Maximal size of possible extension queue 220. Compared 26539 event pairs, 2579 based on Foata normal form. 1/5029 useless extension candidates. Maximal degree in co-relation 14575. Up to 4960 conditions per place. [2023-08-24 07:44:42,607 INFO L140 encePairwiseOnDemand]: 1604/1615 looper letters, 122 selfloop transitions, 19 changer transitions 2/143 dead transitions. [2023-08-24 07:44:42,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 143 transitions, 866 flow [2023-08-24 07:44:42,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 07:44:42,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 07:44:42,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3203 transitions. [2023-08-24 07:44:42,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.396656346749226 [2023-08-24 07:44:42,612 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3203 transitions. [2023-08-24 07:44:42,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3203 transitions. [2023-08-24 07:44:42,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:42,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3203 transitions. [2023-08-24 07:44:42,617 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 640.6) internal successors, (3203), 5 states have internal predecessors, (3203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:42,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1615.0) internal successors, (9690), 6 states have internal predecessors, (9690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:42,623 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1615.0) internal successors, (9690), 6 states have internal predecessors, (9690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:42,623 INFO L175 Difference]: Start difference. First operand has 67 places, 77 transitions, 374 flow. Second operand 5 states and 3203 transitions. [2023-08-24 07:44:42,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 143 transitions, 866 flow [2023-08-24 07:44:42,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 143 transitions, 856 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-24 07:44:42,631 INFO L231 Difference]: Finished difference. Result has 73 places, 91 transitions, 534 flow [2023-08-24 07:44:42,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1615, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=534, PETRI_PLACES=73, PETRI_TRANSITIONS=91} [2023-08-24 07:44:42,632 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 27 predicate places. [2023-08-24 07:44:42,632 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 91 transitions, 534 flow [2023-08-24 07:44:42,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 622.4) internal successors, (3112), 5 states have internal predecessors, (3112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:42,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:42,632 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:42,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 07:44:42,633 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:44:42,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:42,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1244371145, now seen corresponding path program 7 times [2023-08-24 07:44:42,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:42,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474192428] [2023-08-24 07:44:42,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:42,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:43,070 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 07:44:43,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:43,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474192428] [2023-08-24 07:44:43,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474192428] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:44:43,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:44:43,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 07:44:43,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918134058] [2023-08-24 07:44:43,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:44:43,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:44:43,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:44:43,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:44:43,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 07:44:43,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 618 out of 1615 [2023-08-24 07:44:43,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 91 transitions, 534 flow. Second operand has 5 states, 5 states have (on average 622.4) internal successors, (3112), 5 states have internal predecessors, (3112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:43,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:44:43,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 618 of 1615 [2023-08-24 07:44:43,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:44,722 INFO L124 PetriNetUnfolderBase]: 8335/11701 cut-off events. [2023-08-24 07:44:44,722 INFO L125 PetriNetUnfolderBase]: For 13309/13309 co-relation queries the response was YES. [2023-08-24 07:44:44,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33453 conditions, 11701 events. 8335/11701 cut-off events. For 13309/13309 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 60263 event pairs, 1895 based on Foata normal form. 1/10032 useless extension candidates. Maximal degree in co-relation 33351. Up to 4802 conditions per place. [2023-08-24 07:44:44,763 INFO L140 encePairwiseOnDemand]: 1602/1615 looper letters, 148 selfloop transitions, 48 changer transitions 2/198 dead transitions. [2023-08-24 07:44:44,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 198 transitions, 1379 flow [2023-08-24 07:44:44,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 07:44:44,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 07:44:44,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3238 transitions. [2023-08-24 07:44:44,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4009907120743034 [2023-08-24 07:44:44,768 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3238 transitions. [2023-08-24 07:44:44,768 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3238 transitions. [2023-08-24 07:44:44,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:44,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3238 transitions. [2023-08-24 07:44:44,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 647.6) internal successors, (3238), 5 states have internal predecessors, (3238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:44,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 1615.0) internal successors, (9690), 6 states have internal predecessors, (9690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:44,779 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 1615.0) internal successors, (9690), 6 states have internal predecessors, (9690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:44,779 INFO L175 Difference]: Start difference. First operand has 73 places, 91 transitions, 534 flow. Second operand 5 states and 3238 transitions. [2023-08-24 07:44:44,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 198 transitions, 1379 flow [2023-08-24 07:44:44,795 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 198 transitions, 1358 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-24 07:44:44,797 INFO L231 Difference]: Finished difference. Result has 79 places, 120 transitions, 927 flow [2023-08-24 07:44:44,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1615, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=927, PETRI_PLACES=79, PETRI_TRANSITIONS=120} [2023-08-24 07:44:44,798 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 33 predicate places. [2023-08-24 07:44:44,798 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 120 transitions, 927 flow [2023-08-24 07:44:44,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 622.4) internal successors, (3112), 5 states have internal predecessors, (3112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:44,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:44,798 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:44,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 07:44:44,799 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:44:44,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:44,799 INFO L85 PathProgramCache]: Analyzing trace with hash 249887811, now seen corresponding path program 8 times [2023-08-24 07:44:44,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:44,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170694429] [2023-08-24 07:44:44,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:44,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:44,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:45,267 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 07:44:45,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:45,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170694429] [2023-08-24 07:44:45,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170694429] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:44:45,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:44:45,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 07:44:45,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010710975] [2023-08-24 07:44:45,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:44:45,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:44:45,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:44:45,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:44:45,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 07:44:45,270 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 618 out of 1615 [2023-08-24 07:44:45,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 120 transitions, 927 flow. Second operand has 5 states, 5 states have (on average 622.4) internal successors, (3112), 5 states have internal predecessors, (3112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:45,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:44:45,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 618 of 1615 [2023-08-24 07:44:45,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:47,646 INFO L124 PetriNetUnfolderBase]: 11467/16067 cut-off events. [2023-08-24 07:44:47,646 INFO L125 PetriNetUnfolderBase]: For 31819/31819 co-relation queries the response was YES. [2023-08-24 07:44:47,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55584 conditions, 16067 events. 11467/16067 cut-off events. For 31819/31819 co-relation queries the response was YES. Maximal size of possible extension queue 540. Compared 87545 event pairs, 1293 based on Foata normal form. 1/13496 useless extension candidates. Maximal degree in co-relation 55479. Up to 5734 conditions per place. [2023-08-24 07:44:47,712 INFO L140 encePairwiseOnDemand]: 1602/1615 looper letters, 195 selfloop transitions, 73 changer transitions 2/270 dead transitions. [2023-08-24 07:44:47,712 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 270 transitions, 2240 flow [2023-08-24 07:44:47,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 07:44:47,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 07:44:47,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3892 transitions. [2023-08-24 07:44:47,717 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40165118679050565 [2023-08-24 07:44:47,717 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3892 transitions. [2023-08-24 07:44:47,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3892 transitions. [2023-08-24 07:44:47,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:47,718 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3892 transitions. [2023-08-24 07:44:47,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 648.6666666666666) internal successors, (3892), 6 states have internal predecessors, (3892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:47,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1615.0) internal successors, (11305), 7 states have internal predecessors, (11305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:47,728 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1615.0) internal successors, (11305), 7 states have internal predecessors, (11305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:47,728 INFO L175 Difference]: Start difference. First operand has 79 places, 120 transitions, 927 flow. Second operand 6 states and 3892 transitions. [2023-08-24 07:44:47,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 270 transitions, 2240 flow [2023-08-24 07:44:47,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 270 transitions, 2198 flow, removed 21 selfloop flow, removed 0 redundant places. [2023-08-24 07:44:47,793 INFO L231 Difference]: Finished difference. Result has 89 places, 168 transitions, 1696 flow [2023-08-24 07:44:47,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1615, PETRI_DIFFERENCE_MINUEND_FLOW=907, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1696, PETRI_PLACES=89, PETRI_TRANSITIONS=168} [2023-08-24 07:44:47,795 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 43 predicate places. [2023-08-24 07:44:47,795 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 168 transitions, 1696 flow [2023-08-24 07:44:47,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 622.4) internal successors, (3112), 5 states have internal predecessors, (3112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:47,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:47,796 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:47,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-24 07:44:47,796 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:44:47,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:47,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1141453108, now seen corresponding path program 1 times [2023-08-24 07:44:47,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:47,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479543071] [2023-08-24 07:44:47,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:47,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:47,904 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 07:44:47,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:47,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479543071] [2023-08-24 07:44:47,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479543071] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:44:47,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:44:47,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 07:44:47,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362371864] [2023-08-24 07:44:47,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:44:47,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 07:44:47,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:44:47,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 07:44:47,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 07:44:47,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 647 out of 1615 [2023-08-24 07:44:47,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 168 transitions, 1696 flow. Second operand has 3 states, 3 states have (on average 654.6666666666666) internal successors, (1964), 3 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:47,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:44:47,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 647 of 1615 [2023-08-24 07:44:47,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:50,697 INFO L124 PetriNetUnfolderBase]: 13891/19382 cut-off events. [2023-08-24 07:44:50,697 INFO L125 PetriNetUnfolderBase]: For 69599/69599 co-relation queries the response was YES. [2023-08-24 07:44:50,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75661 conditions, 19382 events. 13891/19382 cut-off events. For 69599/69599 co-relation queries the response was YES. Maximal size of possible extension queue 479. Compared 100629 event pairs, 6583 based on Foata normal form. 238/16416 useless extension candidates. Maximal degree in co-relation 75551. Up to 15544 conditions per place. [2023-08-24 07:44:50,799 INFO L140 encePairwiseOnDemand]: 1612/1615 looper letters, 211 selfloop transitions, 10 changer transitions 0/221 dead transitions. [2023-08-24 07:44:50,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 221 transitions, 2592 flow [2023-08-24 07:44:50,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 07:44:50,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 07:44:50,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2017 transitions. [2023-08-24 07:44:50,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41630546955624353 [2023-08-24 07:44:50,803 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2017 transitions. [2023-08-24 07:44:50,803 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2017 transitions. [2023-08-24 07:44:50,803 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:50,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2017 transitions. [2023-08-24 07:44:50,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 672.3333333333334) internal successors, (2017), 3 states have internal predecessors, (2017), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:50,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1615.0) internal successors, (6460), 4 states have internal predecessors, (6460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:50,809 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1615.0) internal successors, (6460), 4 states have internal predecessors, (6460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:50,809 INFO L175 Difference]: Start difference. First operand has 89 places, 168 transitions, 1696 flow. Second operand 3 states and 2017 transitions. [2023-08-24 07:44:50,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 221 transitions, 2592 flow [2023-08-24 07:44:51,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 221 transitions, 2516 flow, removed 38 selfloop flow, removed 0 redundant places. [2023-08-24 07:44:51,059 INFO L231 Difference]: Finished difference. Result has 92 places, 163 transitions, 1606 flow [2023-08-24 07:44:51,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1615, PETRI_DIFFERENCE_MINUEND_FLOW=1562, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1606, PETRI_PLACES=92, PETRI_TRANSITIONS=163} [2023-08-24 07:44:51,059 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 46 predicate places. [2023-08-24 07:44:51,059 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 163 transitions, 1606 flow [2023-08-24 07:44:51,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 654.6666666666666) internal successors, (1964), 3 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:51,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:51,060 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:51,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-24 07:44:51,060 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:44:51,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:51,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1759787863, now seen corresponding path program 1 times [2023-08-24 07:44:51,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:51,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2003499158] [2023-08-24 07:44:51,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:51,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:51,170 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 07:44:51,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:51,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2003499158] [2023-08-24 07:44:51,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2003499158] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:44:51,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:44:51,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 07:44:51,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583114240] [2023-08-24 07:44:51,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:44:51,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 07:44:51,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:44:51,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 07:44:51,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 07:44:51,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 647 out of 1615 [2023-08-24 07:44:51,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 163 transitions, 1606 flow. Second operand has 3 states, 3 states have (on average 654.6666666666666) internal successors, (1964), 3 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:51,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:44:51,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 647 of 1615 [2023-08-24 07:44:51,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:54,360 INFO L124 PetriNetUnfolderBase]: 15167/21188 cut-off events. [2023-08-24 07:44:54,360 INFO L125 PetriNetUnfolderBase]: For 68308/68308 co-relation queries the response was YES. [2023-08-24 07:44:54,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81402 conditions, 21188 events. 15167/21188 cut-off events. For 68308/68308 co-relation queries the response was YES. Maximal size of possible extension queue 514. Compared 114503 event pairs, 7213 based on Foata normal form. 0/17994 useless extension candidates. Maximal degree in co-relation 81290. Up to 18748 conditions per place. [2023-08-24 07:44:54,457 INFO L140 encePairwiseOnDemand]: 1612/1615 looper letters, 192 selfloop transitions, 14 changer transitions 0/206 dead transitions. [2023-08-24 07:44:54,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 206 transitions, 2344 flow [2023-08-24 07:44:54,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 07:44:54,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 07:44:54,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2021 transitions. [2023-08-24 07:44:54,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4171310629514964 [2023-08-24 07:44:54,460 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2021 transitions. [2023-08-24 07:44:54,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2021 transitions. [2023-08-24 07:44:54,461 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:54,461 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2021 transitions. [2023-08-24 07:44:54,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 673.6666666666666) internal successors, (2021), 3 states have internal predecessors, (2021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:54,465 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1615.0) internal successors, (6460), 4 states have internal predecessors, (6460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:54,465 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1615.0) internal successors, (6460), 4 states have internal predecessors, (6460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:54,465 INFO L175 Difference]: Start difference. First operand has 92 places, 163 transitions, 1606 flow. Second operand 3 states and 2021 transitions. [2023-08-24 07:44:54,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 206 transitions, 2344 flow [2023-08-24 07:44:54,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 206 transitions, 2330 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 07:44:54,562 INFO L231 Difference]: Finished difference. Result has 94 places, 162 transitions, 1648 flow [2023-08-24 07:44:54,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1615, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1648, PETRI_PLACES=94, PETRI_TRANSITIONS=162} [2023-08-24 07:44:54,563 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 48 predicate places. [2023-08-24 07:44:54,563 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 162 transitions, 1648 flow [2023-08-24 07:44:54,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 654.6666666666666) internal successors, (1964), 3 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:54,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:44:54,563 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:44:54,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-24 07:44:54,563 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:44:54,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:44:54,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1952376036, now seen corresponding path program 1 times [2023-08-24 07:44:54,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:44:54,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562041512] [2023-08-24 07:44:54,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:44:54,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:44:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:44:54,674 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 07:44:54,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:44:54,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562041512] [2023-08-24 07:44:54,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562041512] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:44:54,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:44:54,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 07:44:54,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251871561] [2023-08-24 07:44:54,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:44:54,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 07:44:54,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:44:54,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 07:44:54,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 07:44:54,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 647 out of 1615 [2023-08-24 07:44:54,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 162 transitions, 1648 flow. Second operand has 3 states, 3 states have (on average 654.6666666666666) internal successors, (1964), 3 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:54,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:44:54,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 647 of 1615 [2023-08-24 07:44:54,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:44:59,666 INFO L124 PetriNetUnfolderBase]: 23601/32874 cut-off events. [2023-08-24 07:44:59,666 INFO L125 PetriNetUnfolderBase]: For 129616/129616 co-relation queries the response was YES. [2023-08-24 07:44:59,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128637 conditions, 32874 events. 23601/32874 cut-off events. For 129616/129616 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 183357 event pairs, 9294 based on Foata normal form. 586/28520 useless extension candidates. Maximal degree in co-relation 128524. Up to 21623 conditions per place. [2023-08-24 07:44:59,875 INFO L140 encePairwiseOnDemand]: 1610/1615 looper letters, 214 selfloop transitions, 12 changer transitions 0/226 dead transitions. [2023-08-24 07:44:59,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 226 transitions, 2705 flow [2023-08-24 07:44:59,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 07:44:59,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 07:44:59,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2019 transitions. [2023-08-24 07:44:59,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41671826625387 [2023-08-24 07:44:59,879 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2019 transitions. [2023-08-24 07:44:59,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2019 transitions. [2023-08-24 07:44:59,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:44:59,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2019 transitions. [2023-08-24 07:44:59,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 673.0) internal successors, (2019), 3 states have internal predecessors, (2019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:59,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1615.0) internal successors, (6460), 4 states have internal predecessors, (6460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:59,885 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1615.0) internal successors, (6460), 4 states have internal predecessors, (6460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:44:59,885 INFO L175 Difference]: Start difference. First operand has 94 places, 162 transitions, 1648 flow. Second operand 3 states and 2019 transitions. [2023-08-24 07:44:59,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 226 transitions, 2705 flow [2023-08-24 07:45:00,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 226 transitions, 2658 flow, removed 13 selfloop flow, removed 1 redundant places. [2023-08-24 07:45:00,060 INFO L231 Difference]: Finished difference. Result has 96 places, 162 transitions, 1652 flow [2023-08-24 07:45:00,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1615, PETRI_DIFFERENCE_MINUEND_FLOW=1604, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1652, PETRI_PLACES=96, PETRI_TRANSITIONS=162} [2023-08-24 07:45:00,061 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 50 predicate places. [2023-08-24 07:45:00,061 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 162 transitions, 1652 flow [2023-08-24 07:45:00,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 654.6666666666666) internal successors, (1964), 3 states have internal predecessors, (1964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:00,061 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:45:00,061 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:45:00,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-24 07:45:00,061 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:45:00,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:45:00,062 INFO L85 PathProgramCache]: Analyzing trace with hash 57120697, now seen corresponding path program 1 times [2023-08-24 07:45:00,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:45:00,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158501073] [2023-08-24 07:45:00,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:45:00,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:45:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:45:00,483 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 07:45:00,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:45:00,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158501073] [2023-08-24 07:45:00,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158501073] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:45:00,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [47656526] [2023-08-24 07:45:00,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:45:00,484 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:45:00,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:45:00,484 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:45:00,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 07:45:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:45:00,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-24 07:45:00,681 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:45:00,871 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 07:45:00,871 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:45:01,023 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 07:45:01,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [47656526] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 07:45:01,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 07:45:01,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-24 07:45:01,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291501762] [2023-08-24 07:45:01,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 07:45:01,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-24 07:45:01,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:45:01,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-24 07:45:01,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-08-24 07:45:01,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 635 out of 1615 [2023-08-24 07:45:01,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 162 transitions, 1652 flow. Second operand has 10 states, 10 states have (on average 639.4) internal successors, (6394), 10 states have internal predecessors, (6394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:01,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:45:01,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 635 of 1615 [2023-08-24 07:45:01,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:45:06,806 INFO L124 PetriNetUnfolderBase]: 24205/34049 cut-off events. [2023-08-24 07:45:06,806 INFO L125 PetriNetUnfolderBase]: For 123082/123082 co-relation queries the response was YES. [2023-08-24 07:45:06,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134845 conditions, 34049 events. 24205/34049 cut-off events. For 123082/123082 co-relation queries the response was YES. Maximal size of possible extension queue 780. Compared 195696 event pairs, 2760 based on Foata normal form. 829/29602 useless extension candidates. Maximal degree in co-relation 134731. Up to 16113 conditions per place. [2023-08-24 07:45:07,037 INFO L140 encePairwiseOnDemand]: 1604/1615 looper letters, 284 selfloop transitions, 93 changer transitions 40/417 dead transitions. [2023-08-24 07:45:07,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 417 transitions, 4107 flow [2023-08-24 07:45:07,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 07:45:07,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 07:45:07,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 8517 transitions. [2023-08-24 07:45:07,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40566801619433196 [2023-08-24 07:45:07,048 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 8517 transitions. [2023-08-24 07:45:07,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 8517 transitions. [2023-08-24 07:45:07,050 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:45:07,050 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 8517 transitions. [2023-08-24 07:45:07,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 655.1538461538462) internal successors, (8517), 13 states have internal predecessors, (8517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:07,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 1615.0) internal successors, (22610), 14 states have internal predecessors, (22610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:07,068 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 1615.0) internal successors, (22610), 14 states have internal predecessors, (22610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:07,068 INFO L175 Difference]: Start difference. First operand has 96 places, 162 transitions, 1652 flow. Second operand 13 states and 8517 transitions. [2023-08-24 07:45:07,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 417 transitions, 4107 flow [2023-08-24 07:45:07,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 417 transitions, 4073 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 07:45:07,307 INFO L231 Difference]: Finished difference. Result has 117 places, 204 transitions, 2579 flow [2023-08-24 07:45:07,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1615, PETRI_DIFFERENCE_MINUEND_FLOW=1604, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2579, PETRI_PLACES=117, PETRI_TRANSITIONS=204} [2023-08-24 07:45:07,307 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 71 predicate places. [2023-08-24 07:45:07,307 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 204 transitions, 2579 flow [2023-08-24 07:45:07,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 639.4) internal successors, (6394), 10 states have internal predecessors, (6394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:07,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:45:07,308 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:45:07,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-24 07:45:07,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-24 07:45:07,509 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:45:07,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:45:07,509 INFO L85 PathProgramCache]: Analyzing trace with hash -52529297, now seen corresponding path program 2 times [2023-08-24 07:45:07,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:45:07,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472675239] [2023-08-24 07:45:07,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:45:07,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:45:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:45:07,789 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-08-24 07:45:07,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:45:07,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472675239] [2023-08-24 07:45:07,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472675239] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:45:07,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:45:07,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 07:45:07,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875189983] [2023-08-24 07:45:07,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:45:07,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:45:07,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:45:07,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:45:07,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 07:45:07,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 643 out of 1615 [2023-08-24 07:45:07,794 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 204 transitions, 2579 flow. Second operand has 5 states, 5 states have (on average 647.8) internal successors, (3239), 5 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:07,794 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:45:07,794 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 643 of 1615 [2023-08-24 07:45:07,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:45:13,644 INFO L124 PetriNetUnfolderBase]: 24351/34401 cut-off events. [2023-08-24 07:45:13,644 INFO L125 PetriNetUnfolderBase]: For 169241/169241 co-relation queries the response was YES. [2023-08-24 07:45:13,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143759 conditions, 34401 events. 24351/34401 cut-off events. For 169241/169241 co-relation queries the response was YES. Maximal size of possible extension queue 808. Compared 201445 event pairs, 6174 based on Foata normal form. 5/29126 useless extension candidates. Maximal degree in co-relation 143645. Up to 15130 conditions per place. [2023-08-24 07:45:13,854 INFO L140 encePairwiseOnDemand]: 1604/1615 looper letters, 208 selfloop transitions, 107 changer transitions 33/348 dead transitions. [2023-08-24 07:45:13,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 348 transitions, 4204 flow [2023-08-24 07:45:13,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 07:45:13,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 07:45:13,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4035 transitions. [2023-08-24 07:45:13,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41640866873065013 [2023-08-24 07:45:13,859 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4035 transitions. [2023-08-24 07:45:13,859 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4035 transitions. [2023-08-24 07:45:13,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:45:13,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4035 transitions. [2023-08-24 07:45:13,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 672.5) internal successors, (4035), 6 states have internal predecessors, (4035), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:13,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1615.0) internal successors, (11305), 7 states have internal predecessors, (11305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:13,868 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1615.0) internal successors, (11305), 7 states have internal predecessors, (11305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:13,868 INFO L175 Difference]: Start difference. First operand has 117 places, 204 transitions, 2579 flow. Second operand 6 states and 4035 transitions. [2023-08-24 07:45:13,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 348 transitions, 4204 flow [2023-08-24 07:45:14,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 348 transitions, 4114 flow, removed 45 selfloop flow, removed 2 redundant places. [2023-08-24 07:45:14,307 INFO L231 Difference]: Finished difference. Result has 122 places, 222 transitions, 3147 flow [2023-08-24 07:45:14,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1615, PETRI_DIFFERENCE_MINUEND_FLOW=2517, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3147, PETRI_PLACES=122, PETRI_TRANSITIONS=222} [2023-08-24 07:45:14,307 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 76 predicate places. [2023-08-24 07:45:14,307 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 222 transitions, 3147 flow [2023-08-24 07:45:14,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 647.8) internal successors, (3239), 5 states have internal predecessors, (3239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:14,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:45:14,308 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:45:14,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-24 07:45:14,308 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:45:14,308 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:45:14,308 INFO L85 PathProgramCache]: Analyzing trace with hash 43483001, now seen corresponding path program 1 times [2023-08-24 07:45:14,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:45:14,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742612597] [2023-08-24 07:45:14,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:45:14,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:45:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:45:14,508 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 07:45:14,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:45:14,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742612597] [2023-08-24 07:45:14,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742612597] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:45:14,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215172107] [2023-08-24 07:45:14,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:45:14,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:45:14,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:45:14,509 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:45:14,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 07:45:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:45:14,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 29 conjunts are in the unsatisfiable core [2023-08-24 07:45:14,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:45:14,950 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:45:14,951 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 36 [2023-08-24 07:45:15,041 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 07:45:15,042 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:45:15,428 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-08-24 07:45:15,449 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 07:45:15,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215172107] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 07:45:15,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 07:45:15,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 9, 8] total 17 [2023-08-24 07:45:15,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049456298] [2023-08-24 07:45:15,449 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 07:45:15,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-24 07:45:15,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:45:15,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-24 07:45:15,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2023-08-24 07:45:15,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 580 out of 1615 [2023-08-24 07:45:15,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 222 transitions, 3147 flow. Second operand has 18 states, 18 states have (on average 583.0555555555555) internal successors, (10495), 18 states have internal predecessors, (10495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:15,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:45:15,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 580 of 1615 [2023-08-24 07:45:15,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:45:20,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-24 07:45:43,389 INFO L124 PetriNetUnfolderBase]: 99252/138019 cut-off events. [2023-08-24 07:45:43,389 INFO L125 PetriNetUnfolderBase]: For 719382/719382 co-relation queries the response was YES. [2023-08-24 07:45:44,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574808 conditions, 138019 events. 99252/138019 cut-off events. For 719382/719382 co-relation queries the response was YES. Maximal size of possible extension queue 2664. Compared 904844 event pairs, 3763 based on Foata normal form. 46/114345 useless extension candidates. Maximal degree in co-relation 574681. Up to 29023 conditions per place. [2023-08-24 07:45:44,740 INFO L140 encePairwiseOnDemand]: 1599/1615 looper letters, 1366 selfloop transitions, 97 changer transitions 668/2131 dead transitions. [2023-08-24 07:45:44,740 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 2131 transitions, 27426 flow [2023-08-24 07:45:44,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2023-08-24 07:45:44,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2023-08-24 07:45:44,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 30117 transitions. [2023-08-24 07:45:44,764 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37296594427244584 [2023-08-24 07:45:44,765 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 30117 transitions. [2023-08-24 07:45:44,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 30117 transitions. [2023-08-24 07:45:44,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:45:44,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 30117 transitions. [2023-08-24 07:45:44,790 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 602.34) internal successors, (30117), 50 states have internal predecessors, (30117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:44,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 1615.0) internal successors, (82365), 51 states have internal predecessors, (82365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:44,841 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 1615.0) internal successors, (82365), 51 states have internal predecessors, (82365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:44,841 INFO L175 Difference]: Start difference. First operand has 122 places, 222 transitions, 3147 flow. Second operand 50 states and 30117 transitions. [2023-08-24 07:45:44,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 2131 transitions, 27426 flow [2023-08-24 07:45:47,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 2131 transitions, 27341 flow, removed 40 selfloop flow, removed 2 redundant places. [2023-08-24 07:45:47,671 INFO L231 Difference]: Finished difference. Result has 208 places, 292 transitions, 3725 flow [2023-08-24 07:45:47,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1615, PETRI_DIFFERENCE_MINUEND_FLOW=3066, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=3725, PETRI_PLACES=208, PETRI_TRANSITIONS=292} [2023-08-24 07:45:47,672 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 162 predicate places. [2023-08-24 07:45:47,672 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 292 transitions, 3725 flow [2023-08-24 07:45:47,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 583.0555555555555) internal successors, (10495), 18 states have internal predecessors, (10495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:47,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:45:47,673 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:45:47,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-24 07:45:47,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-24 07:45:47,878 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:45:47,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:45:47,878 INFO L85 PathProgramCache]: Analyzing trace with hash -816864291, now seen corresponding path program 1 times [2023-08-24 07:45:47,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:45:47,878 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875527964] [2023-08-24 07:45:47,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:45:47,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:45:48,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:45:48,161 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-08-24 07:45:48,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:45:48,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875527964] [2023-08-24 07:45:48,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875527964] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:45:48,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:45:48,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 07:45:48,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859062202] [2023-08-24 07:45:48,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:45:48,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 07:45:48,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:45:48,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 07:45:48,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 07:45:48,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 637 out of 1615 [2023-08-24 07:45:48,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 292 transitions, 3725 flow. Second operand has 5 states, 5 states have (on average 643.0) internal successors, (3215), 5 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:45:48,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:45:48,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 637 of 1615 [2023-08-24 07:45:48,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:46:13,404 INFO L124 PetriNetUnfolderBase]: 91596/126130 cut-off events. [2023-08-24 07:46:13,405 INFO L125 PetriNetUnfolderBase]: For 950742/950742 co-relation queries the response was YES. [2023-08-24 07:46:15,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 659160 conditions, 126130 events. 91596/126130 cut-off events. For 950742/950742 co-relation queries the response was YES. Maximal size of possible extension queue 2449. Compared 797023 event pairs, 46800 based on Foata normal form. 5/112045 useless extension candidates. Maximal degree in co-relation 658994. Up to 112900 conditions per place. [2023-08-24 07:46:15,958 INFO L140 encePairwiseOnDemand]: 1612/1615 looper letters, 279 selfloop transitions, 7 changer transitions 101/387 dead transitions. [2023-08-24 07:46:15,958 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 387 transitions, 5239 flow [2023-08-24 07:46:15,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 07:46:15,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 07:46:15,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2647 transitions. [2023-08-24 07:46:15,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40975232198142414 [2023-08-24 07:46:15,961 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2647 transitions. [2023-08-24 07:46:15,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2647 transitions. [2023-08-24 07:46:15,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:46:15,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2647 transitions. [2023-08-24 07:46:15,964 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 661.75) internal successors, (2647), 4 states have internal predecessors, (2647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:15,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1615.0) internal successors, (8075), 5 states have internal predecessors, (8075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:15,968 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1615.0) internal successors, (8075), 5 states have internal predecessors, (8075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:15,968 INFO L175 Difference]: Start difference. First operand has 208 places, 292 transitions, 3725 flow. Second operand 4 states and 2647 transitions. [2023-08-24 07:46:15,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 387 transitions, 5239 flow [2023-08-24 07:46:31,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 387 transitions, 5067 flow, removed 72 selfloop flow, removed 17 redundant places. [2023-08-24 07:46:31,326 INFO L231 Difference]: Finished difference. Result has 171 places, 264 transitions, 3027 flow [2023-08-24 07:46:31,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1615, PETRI_DIFFERENCE_MINUEND_FLOW=3619, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3027, PETRI_PLACES=171, PETRI_TRANSITIONS=264} [2023-08-24 07:46:31,326 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 125 predicate places. [2023-08-24 07:46:31,326 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 264 transitions, 3027 flow [2023-08-24 07:46:31,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 643.0) internal successors, (3215), 5 states have internal predecessors, (3215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:31,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:46:31,327 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:46:31,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-24 07:46:31,327 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:46:31,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:46:31,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1316469913, now seen corresponding path program 1 times [2023-08-24 07:46:31,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:46:31,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484747396] [2023-08-24 07:46:31,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:46:31,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:46:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:46:31,531 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 07:46:31,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:46:31,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484747396] [2023-08-24 07:46:31,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484747396] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:46:31,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329778663] [2023-08-24 07:46:31,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:46:31,532 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:46:31,532 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:46:31,533 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:46:31,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 07:46:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:46:31,752 INFO L262 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-24 07:46:31,756 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:46:31,837 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 07:46:31,837 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:46:31,951 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 07:46:31,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329778663] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 07:46:31,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 07:46:31,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-08-24 07:46:31,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973662344] [2023-08-24 07:46:31,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 07:46:31,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 07:46:31,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:46:31,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 07:46:31,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-24 07:46:31,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 653 out of 1615 [2023-08-24 07:46:31,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 264 transitions, 3027 flow. Second operand has 6 states, 6 states have (on average 662.0) internal successors, (3972), 6 states have internal predecessors, (3972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:31,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:46:31,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 653 of 1615 [2023-08-24 07:46:31,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:46:53,295 INFO L124 PetriNetUnfolderBase]: 83732/113938 cut-off events. [2023-08-24 07:46:53,296 INFO L125 PetriNetUnfolderBase]: For 714879/714879 co-relation queries the response was YES. [2023-08-24 07:46:54,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 561074 conditions, 113938 events. 83732/113938 cut-off events. For 714879/714879 co-relation queries the response was YES. Maximal size of possible extension queue 2157. Compared 690358 event pairs, 36716 based on Foata normal form. 6/100292 useless extension candidates. Maximal degree in co-relation 560944. Up to 112501 conditions per place. [2023-08-24 07:46:55,034 INFO L140 encePairwiseOnDemand]: 1611/1615 looper letters, 221 selfloop transitions, 11 changer transitions 76/308 dead transitions. [2023-08-24 07:46:55,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 308 transitions, 3991 flow [2023-08-24 07:46:55,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 07:46:55,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 07:46:55,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2694 transitions. [2023-08-24 07:46:55,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4170278637770898 [2023-08-24 07:46:55,036 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2694 transitions. [2023-08-24 07:46:55,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2694 transitions. [2023-08-24 07:46:55,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:46:55,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2694 transitions. [2023-08-24 07:46:55,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 673.5) internal successors, (2694), 4 states have internal predecessors, (2694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:55,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1615.0) internal successors, (8075), 5 states have internal predecessors, (8075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:55,041 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1615.0) internal successors, (8075), 5 states have internal predecessors, (8075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:46:55,041 INFO L175 Difference]: Start difference. First operand has 171 places, 264 transitions, 3027 flow. Second operand 4 states and 2694 transitions. [2023-08-24 07:46:55,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 308 transitions, 3991 flow [2023-08-24 07:47:01,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 308 transitions, 3882 flow, removed 28 selfloop flow, removed 13 redundant places. [2023-08-24 07:47:01,720 INFO L231 Difference]: Finished difference. Result has 162 places, 224 transitions, 2357 flow [2023-08-24 07:47:01,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1615, PETRI_DIFFERENCE_MINUEND_FLOW=2926, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2357, PETRI_PLACES=162, PETRI_TRANSITIONS=224} [2023-08-24 07:47:01,721 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 116 predicate places. [2023-08-24 07:47:01,721 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 224 transitions, 2357 flow [2023-08-24 07:47:01,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 662.0) internal successors, (3972), 6 states have internal predecessors, (3972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:01,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:47:01,721 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:47:01,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-24 07:47:01,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:47:01,926 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:47:01,927 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:47:01,927 INFO L85 PathProgramCache]: Analyzing trace with hash 154563667, now seen corresponding path program 2 times [2023-08-24 07:47:01,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:47:01,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769499536] [2023-08-24 07:47:01,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:47:01,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:47:01,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:47:02,136 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-08-24 07:47:02,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:47:02,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769499536] [2023-08-24 07:47:02,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769499536] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 07:47:02,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 07:47:02,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 07:47:02,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972792046] [2023-08-24 07:47:02,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 07:47:02,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 07:47:02,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:47:02,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 07:47:02,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 07:47:02,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 653 out of 1615 [2023-08-24 07:47:02,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 224 transitions, 2357 flow. Second operand has 4 states, 4 states have (on average 660.5) internal successors, (2642), 4 states have internal predecessors, (2642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:02,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:47:02,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 653 of 1615 [2023-08-24 07:47:02,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:47:22,029 INFO L124 PetriNetUnfolderBase]: 82739/112424 cut-off events. [2023-08-24 07:47:22,029 INFO L125 PetriNetUnfolderBase]: For 659175/659175 co-relation queries the response was YES. [2023-08-24 07:47:23,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 541670 conditions, 112424 events. 82739/112424 cut-off events. For 659175/659175 co-relation queries the response was YES. Maximal size of possible extension queue 2151. Compared 677221 event pairs, 45365 based on Foata normal form. 5/98043 useless extension candidates. Maximal degree in co-relation 541610. Up to 111471 conditions per place. [2023-08-24 07:47:23,475 INFO L140 encePairwiseOnDemand]: 1612/1615 looper letters, 190 selfloop transitions, 0 changer transitions 70/260 dead transitions. [2023-08-24 07:47:23,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 260 transitions, 3140 flow [2023-08-24 07:47:23,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 07:47:23,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 07:47:23,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2690 transitions. [2023-08-24 07:47:23,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41640866873065013 [2023-08-24 07:47:23,477 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2690 transitions. [2023-08-24 07:47:23,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2690 transitions. [2023-08-24 07:47:23,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 07:47:23,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2690 transitions. [2023-08-24 07:47:23,479 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 672.5) internal successors, (2690), 4 states have internal predecessors, (2690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:23,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1615.0) internal successors, (8075), 5 states have internal predecessors, (8075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:23,482 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1615.0) internal successors, (8075), 5 states have internal predecessors, (8075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:23,482 INFO L175 Difference]: Start difference. First operand has 162 places, 224 transitions, 2357 flow. Second operand 4 states and 2690 transitions. [2023-08-24 07:47:23,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 260 transitions, 3140 flow [2023-08-24 07:47:30,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 260 transitions, 2981 flow, removed 15 selfloop flow, removed 9 redundant places. [2023-08-24 07:47:30,985 INFO L231 Difference]: Finished difference. Result has 150 places, 190 transitions, 1659 flow [2023-08-24 07:47:30,985 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1615, PETRI_DIFFERENCE_MINUEND_FLOW=2211, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1659, PETRI_PLACES=150, PETRI_TRANSITIONS=190} [2023-08-24 07:47:30,986 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 104 predicate places. [2023-08-24 07:47:30,986 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 190 transitions, 1659 flow [2023-08-24 07:47:30,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 660.5) internal successors, (2642), 4 states have internal predecessors, (2642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:30,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 07:47:30,986 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 07:47:30,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-24 07:47:30,987 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 07:47:30,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 07:47:30,987 INFO L85 PathProgramCache]: Analyzing trace with hash 2011201855, now seen corresponding path program 1 times [2023-08-24 07:47:30,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 07:47:30,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083357095] [2023-08-24 07:47:30,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:47:30,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 07:47:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:47:32,490 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 07:47:32,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 07:47:32,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083357095] [2023-08-24 07:47:32,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083357095] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 07:47:32,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356711158] [2023-08-24 07:47:32,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 07:47:32,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 07:47:32,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 07:47:32,492 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 07:47:32,498 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-24 07:47:32,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 07:47:32,738 INFO L262 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 31 conjunts are in the unsatisfiable core [2023-08-24 07:47:32,747 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 07:47:32,873 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-08-24 07:47:34,373 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:47:34,374 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 209 treesize of output 481 [2023-08-24 07:47:35,152 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 07:47:35,152 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 07:47:38,875 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 07:47:38,875 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 234 treesize of output 261 [2023-08-24 07:47:40,529 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 6 [2023-08-24 07:47:40,565 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-24 07:47:40,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356711158] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 07:47:40,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 07:47:40,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 13] total 37 [2023-08-24 07:47:40,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497182790] [2023-08-24 07:47:40,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 07:47:40,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-24 07:47:40,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 07:47:40,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-24 07:47:40,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=1232, Unknown=0, NotChecked=0, Total=1406 [2023-08-24 07:47:40,573 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 554 out of 1615 [2023-08-24 07:47:40,578 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 190 transitions, 1659 flow. Second operand has 38 states, 38 states have (on average 557.078947368421) internal successors, (21169), 38 states have internal predecessors, (21169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 07:47:40,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 07:47:40,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 554 of 1615 [2023-08-24 07:47:40,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 07:47:43,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 07:47:50,033 WARN L234 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 85 DAG size of output: 77 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:47:56,478 WARN L234 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 87 DAG size of output: 71 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:48:03,189 WARN L234 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 100 DAG size of output: 82 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:48:10,601 WARN L234 SmtUtils]: Spent 6.23s on a formula simplification. DAG size of input: 98 DAG size of output: 77 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:48:13,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 07:48:19,920 WARN L234 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 86 DAG size of output: 73 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:48:37,979 WARN L234 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 109 DAG size of output: 94 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:49:00,074 WARN L234 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 92 DAG size of output: 89 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:49:08,412 WARN L234 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 91 DAG size of output: 85 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:49:17,105 WARN L234 SmtUtils]: Spent 8.50s on a formula simplification. DAG size of input: 95 DAG size of output: 88 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:49:25,656 WARN L234 SmtUtils]: Spent 8.45s on a formula simplification. DAG size of input: 107 DAG size of output: 89 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:49:37,699 WARN L234 SmtUtils]: Spent 11.60s on a formula simplification. DAG size of input: 96 DAG size of output: 92 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:49:46,658 WARN L234 SmtUtils]: Spent 8.87s on a formula simplification. DAG size of input: 115 DAG size of output: 80 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:49:54,989 WARN L234 SmtUtils]: Spent 6.34s on a formula simplification. DAG size of input: 98 DAG size of output: 90 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:50:01,343 WARN L234 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 92 DAG size of output: 82 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:50:12,385 WARN L234 SmtUtils]: Spent 6.35s on a formula simplification. DAG size of input: 99 DAG size of output: 94 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 07:50:18,852 WARN L234 SmtUtils]: Spent 6.38s on a formula simplification. DAG size of input: 103 DAG size of output: 97 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)