/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 12:29:39,402 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 12:29:39,488 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 12:29:39,519 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 12:29:39,520 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 12:29:39,520 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 12:29:39,521 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 12:29:39,521 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 12:29:39,522 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 12:29:39,525 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 12:29:39,526 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 12:29:39,526 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 12:29:39,527 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 12:29:39,528 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 12:29:39,528 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 12:29:39,528 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 12:29:39,528 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 12:29:39,529 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 12:29:39,529 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 12:29:39,529 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 12:29:39,529 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 12:29:39,530 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 12:29:39,530 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 12:29:39,530 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 12:29:39,531 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 12:29:39,531 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:29:39,531 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 12:29:39,531 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 12:29:39,532 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 12:29:39,532 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 12:29:39,533 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 12:29:39,533 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 12:29:39,533 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 12:29:39,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 12:29:39,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 12:29:39,831 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 12:29:39,833 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 12:29:39,833 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 12:29:39,834 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-11-17 12:29:41,043 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 12:29:41,236 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 12:29:41,236 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-11-17 12:29:41,245 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9d62247/286b32d0c0db45f8913758a65ee09d4d/FLAG405042112 [2023-11-17 12:29:41,265 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cd9d62247/286b32d0c0db45f8913758a65ee09d4d [2023-11-17 12:29:41,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 12:29:41,269 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 12:29:41,271 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 12:29:41,271 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 12:29:41,276 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 12:29:41,277 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:29:41" (1/1) ... [2023-11-17 12:29:41,279 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c59187f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:29:41, skipping insertion in model container [2023-11-17 12:29:41,279 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 12:29:41" (1/1) ... [2023-11-17 12:29:41,305 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 12:29:41,461 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c[2663,2676] [2023-11-17 12:29:41,472 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:29:41,481 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 12:29:41,513 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c[2663,2676] [2023-11-17 12:29:41,514 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 12:29:41,522 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:29:41,523 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 12:29:41,530 INFO L206 MainTranslator]: Completed translation [2023-11-17 12:29:41,530 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:29:41 WrapperNode [2023-11-17 12:29:41,530 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 12:29:41,531 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 12:29:41,531 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 12:29:41,531 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 12:29:41,539 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:29:41" (1/1) ... [2023-11-17 12:29:41,558 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:29:41" (1/1) ... [2023-11-17 12:29:41,580 INFO L138 Inliner]: procedures = 22, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 138 [2023-11-17 12:29:41,580 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 12:29:41,581 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 12:29:41,581 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 12:29:41,581 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 12:29:41,588 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:29:41" (1/1) ... [2023-11-17 12:29:41,588 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:29:41" (1/1) ... [2023-11-17 12:29:41,596 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:29:41" (1/1) ... [2023-11-17 12:29:41,596 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:29:41" (1/1) ... [2023-11-17 12:29:41,602 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:29:41" (1/1) ... [2023-11-17 12:29:41,605 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:29:41" (1/1) ... [2023-11-17 12:29:41,607 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:29:41" (1/1) ... [2023-11-17 12:29:41,608 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:29:41" (1/1) ... [2023-11-17 12:29:41,610 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 12:29:41,611 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 12:29:41,611 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 12:29:41,611 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 12:29:41,612 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:29:41" (1/1) ... [2023-11-17 12:29:41,616 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 12:29:41,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:29:41,648 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 12:29:41,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 12:29:41,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 12:29:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-17 12:29:41,677 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-17 12:29:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-17 12:29:41,677 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-17 12:29:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-17 12:29:41,677 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-17 12:29:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-17 12:29:41,678 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-17 12:29:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 12:29:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 12:29:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 12:29:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 12:29:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 12:29:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 12:29:41,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 12:29:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-17 12:29:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 12:29:41,680 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 12:29:41,766 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 12:29:41,768 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 12:29:42,026 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 12:29:42,246 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 12:29:42,246 INFO L307 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-17 12:29:42,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:29:42 BoogieIcfgContainer [2023-11-17 12:29:42,247 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 12:29:42,254 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 12:29:42,255 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 12:29:42,258 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 12:29:42,258 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 12:29:41" (1/3) ... [2023-11-17 12:29:42,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225c00bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:29:42, skipping insertion in model container [2023-11-17 12:29:42,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 12:29:41" (2/3) ... [2023-11-17 12:29:42,259 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225c00bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 12:29:42, skipping insertion in model container [2023-11-17 12:29:42,259 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 12:29:42" (3/3) ... [2023-11-17 12:29:42,261 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-11-17 12:29:42,280 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 12:29:42,281 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-17 12:29:42,281 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 12:29:42,391 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-17 12:29:42,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 39 transitions, 106 flow [2023-11-17 12:29:42,480 INFO L124 PetriNetUnfolderBase]: 4/35 cut-off events. [2023-11-17 12:29:42,480 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 12:29:42,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 35 events. 4/35 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2023-11-17 12:29:42,486 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 39 transitions, 106 flow [2023-11-17 12:29:42,491 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 34 transitions, 92 flow [2023-11-17 12:29:42,503 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 12:29:42,518 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 43 places, 34 transitions, 92 flow [2023-11-17 12:29:42,520 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 43 places, 34 transitions, 92 flow [2023-11-17 12:29:42,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 34 transitions, 92 flow [2023-11-17 12:29:42,534 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2023-11-17 12:29:42,534 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 12:29:42,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51 conditions, 34 events. 4/34 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 29. Up to 2 conditions per place. [2023-11-17 12:29:42,536 INFO L119 LiptonReduction]: Number of co-enabled transitions 416 [2023-11-17 12:29:42,730 INFO L134 LiptonReduction]: Checked pairs total: 328 [2023-11-17 12:29:42,730 INFO L136 LiptonReduction]: Total number of compositions: 5 [2023-11-17 12:29:42,745 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 12:29:42,751 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@259b5f80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 12:29:42,751 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-17 12:29:42,760 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 12:29:42,760 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2023-11-17 12:29:42,760 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-17 12:29:42,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:29:42,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:29:42,762 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 2 more)] === [2023-11-17 12:29:42,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:29:42,766 INFO L85 PathProgramCache]: Analyzing trace with hash -659705921, now seen corresponding path program 1 times [2023-11-17 12:29:42,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:29:42,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373855224] [2023-11-17 12:29:42,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:29:42,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:29:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:29:43,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:29:43,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:29:43,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373855224] [2023-11-17 12:29:43,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [373855224] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:29:43,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:29:43,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 12:29:43,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954867177] [2023-11-17 12:29:43,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:29:43,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 12:29:43,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:29:43,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 12:29:43,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 12:29:43,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2023-11-17 12:29:43,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 29 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:43,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:29:43,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2023-11-17 12:29:43,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:29:43,467 INFO L124 PetriNetUnfolderBase]: 1343/1736 cut-off events. [2023-11-17 12:29:43,467 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2023-11-17 12:29:43,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3612 conditions, 1736 events. 1343/1736 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 5865 event pairs, 215 based on Foata normal form. 1/1055 useless extension candidates. Maximal degree in co-relation 2691. Up to 1515 conditions per place. [2023-11-17 12:29:43,486 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 39 selfloop transitions, 3 changer transitions 3/49 dead transitions. [2023-11-17 12:29:43,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 49 transitions, 233 flow [2023-11-17 12:29:43,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 12:29:43,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 12:29:43,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 87 transitions. [2023-11-17 12:29:43,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6590909090909091 [2023-11-17 12:29:43,499 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 87 transitions. [2023-11-17 12:29:43,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 87 transitions. [2023-11-17 12:29:43,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:29:43,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 87 transitions. [2023-11-17 12:29:43,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:43,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:43,511 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 44.0) internal successors, (176), 4 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:43,513 INFO L175 Difference]: Start difference. First operand has 38 places, 29 transitions, 82 flow. Second operand 3 states and 87 transitions. [2023-11-17 12:29:43,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 49 transitions, 233 flow [2023-11-17 12:29:43,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 49 transitions, 203 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-11-17 12:29:43,524 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 89 flow [2023-11-17 12:29:43,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=33, PETRI_TRANSITIONS=31} [2023-11-17 12:29:43,530 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -5 predicate places. [2023-11-17 12:29:43,530 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 89 flow [2023-11-17 12:29:43,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:43,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:29:43,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:29:43,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 12:29:43,531 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 2 more)] === [2023-11-17 12:29:43,532 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:29:43,532 INFO L85 PathProgramCache]: Analyzing trace with hash 307199467, now seen corresponding path program 1 times [2023-11-17 12:29:43,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:29:43,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263468840] [2023-11-17 12:29:43,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:29:43,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:29:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:29:43,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:29:43,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:29:43,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263468840] [2023-11-17 12:29:43,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263468840] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:29:43,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:29:43,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:29:43,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511740300] [2023-11-17 12:29:43,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:29:43,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:29:43,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:29:43,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:29:43,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:29:43,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2023-11-17 12:29:43,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:43,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:29:43,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2023-11-17 12:29:43,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:29:44,088 INFO L124 PetriNetUnfolderBase]: 1757/2308 cut-off events. [2023-11-17 12:29:44,088 INFO L125 PetriNetUnfolderBase]: For 543/543 co-relation queries the response was YES. [2023-11-17 12:29:44,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5615 conditions, 2308 events. 1757/2308 cut-off events. For 543/543 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 8600 event pairs, 230 based on Foata normal form. 30/2338 useless extension candidates. Maximal degree in co-relation 2334. Up to 1387 conditions per place. [2023-11-17 12:29:44,104 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 75 selfloop transitions, 7 changer transitions 0/86 dead transitions. [2023-11-17 12:29:44,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 86 transitions, 405 flow [2023-11-17 12:29:44,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:29:44,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:29:44,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 135 transitions. [2023-11-17 12:29:44,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6136363636363636 [2023-11-17 12:29:44,109 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 135 transitions. [2023-11-17 12:29:44,109 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 135 transitions. [2023-11-17 12:29:44,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:29:44,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 135 transitions. [2023-11-17 12:29:44,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:44,113 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:44,113 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:44,114 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 89 flow. Second operand 5 states and 135 transitions. [2023-11-17 12:29:44,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 86 transitions, 405 flow [2023-11-17 12:29:44,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 86 transitions, 401 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:29:44,117 INFO L231 Difference]: Finished difference. Result has 38 places, 36 transitions, 137 flow [2023-11-17 12:29:44,117 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=137, PETRI_PLACES=38, PETRI_TRANSITIONS=36} [2023-11-17 12:29:44,118 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 0 predicate places. [2023-11-17 12:29:44,118 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 36 transitions, 137 flow [2023-11-17 12:29:44,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:44,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:29:44,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:29:44,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 12:29:44,126 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 2 more)] === [2023-11-17 12:29:44,129 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:29:44,129 INFO L85 PathProgramCache]: Analyzing trace with hash -672374986, now seen corresponding path program 1 times [2023-11-17 12:29:44,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:29:44,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285674517] [2023-11-17 12:29:44,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:29:44,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:29:44,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:29:44,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:29:44,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:29:44,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285674517] [2023-11-17 12:29:44,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285674517] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:29:44,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388414933] [2023-11-17 12:29:44,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:29:44,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:29:44,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:29:44,293 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:29:44,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-17 12:29:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:29:44,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 12:29:44,434 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:29:44,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:29:44,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:29:44,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:29:44,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388414933] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 12:29:44,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 12:29:44,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2023-11-17 12:29:44,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220485565] [2023-11-17 12:29:44,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:29:44,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:29:44,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:29:44,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:29:44,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-17 12:29:44,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2023-11-17 12:29:44,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 36 transitions, 137 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:44,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:29:44,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2023-11-17 12:29:44,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:29:44,925 INFO L124 PetriNetUnfolderBase]: 2255/3102 cut-off events. [2023-11-17 12:29:44,925 INFO L125 PetriNetUnfolderBase]: For 3292/3296 co-relation queries the response was YES. [2023-11-17 12:29:44,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9294 conditions, 3102 events. 2255/3102 cut-off events. For 3292/3296 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 13221 event pairs, 432 based on Foata normal form. 102/3202 useless extension candidates. Maximal degree in co-relation 4532. Up to 1229 conditions per place. [2023-11-17 12:29:44,950 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 71 selfloop transitions, 6 changer transitions 0/81 dead transitions. [2023-11-17 12:29:44,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 81 transitions, 480 flow [2023-11-17 12:29:44,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:29:44,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:29:44,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 105 transitions. [2023-11-17 12:29:44,952 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5965909090909091 [2023-11-17 12:29:44,952 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 105 transitions. [2023-11-17 12:29:44,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 105 transitions. [2023-11-17 12:29:44,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:29:44,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 105 transitions. [2023-11-17 12:29:44,953 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:44,954 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:44,954 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:44,955 INFO L175 Difference]: Start difference. First operand has 38 places, 36 transitions, 137 flow. Second operand 4 states and 105 transitions. [2023-11-17 12:29:44,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 81 transitions, 480 flow [2023-11-17 12:29:44,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 81 transitions, 472 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:29:44,958 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 179 flow [2023-11-17 12:29:44,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-11-17 12:29:44,959 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 5 predicate places. [2023-11-17 12:29:44,960 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 179 flow [2023-11-17 12:29:44,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:44,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:29:44,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:29:44,973 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-17 12:29:45,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:29:45,167 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 2 more)] === [2023-11-17 12:29:45,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:29:45,167 INFO L85 PathProgramCache]: Analyzing trace with hash 839314002, now seen corresponding path program 2 times [2023-11-17 12:29:45,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:29:45,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250623877] [2023-11-17 12:29:45,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:29:45,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:29:45,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:29:45,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:29:45,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:29:45,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250623877] [2023-11-17 12:29:45,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250623877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:29:45,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:29:45,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:29:45,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627156322] [2023-11-17 12:29:45,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:29:45,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:29:45,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:29:45,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:29:45,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:29:45,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2023-11-17 12:29:45,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 179 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:45,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:29:45,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2023-11-17 12:29:45,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:29:45,679 INFO L124 PetriNetUnfolderBase]: 2497/3429 cut-off events. [2023-11-17 12:29:45,679 INFO L125 PetriNetUnfolderBase]: For 6031/6031 co-relation queries the response was YES. [2023-11-17 12:29:45,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12076 conditions, 3429 events. 2497/3429 cut-off events. For 6031/6031 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 14833 event pairs, 769 based on Foata normal form. 24/3453 useless extension candidates. Maximal degree in co-relation 4762. Up to 2871 conditions per place. [2023-11-17 12:29:45,707 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 64 selfloop transitions, 5 changer transitions 18/91 dead transitions. [2023-11-17 12:29:45,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 91 transitions, 534 flow [2023-11-17 12:29:45,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:29:45,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:29:45,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2023-11-17 12:29:45,709 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5909090909090909 [2023-11-17 12:29:45,709 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 130 transitions. [2023-11-17 12:29:45,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 130 transitions. [2023-11-17 12:29:45,709 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:29:45,709 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 130 transitions. [2023-11-17 12:29:45,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:45,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:45,711 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:45,711 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 179 flow. Second operand 5 states and 130 transitions. [2023-11-17 12:29:45,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 91 transitions, 534 flow [2023-11-17 12:29:45,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 91 transitions, 534 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 12:29:45,718 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 209 flow [2023-11-17 12:29:45,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=209, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-11-17 12:29:45,719 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 10 predicate places. [2023-11-17 12:29:45,719 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 209 flow [2023-11-17 12:29:45,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:45,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:29:45,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:29:45,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 12:29:45,720 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 2 more)] === [2023-11-17 12:29:45,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:29:45,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1567695537, now seen corresponding path program 2 times [2023-11-17 12:29:45,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:29:45,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868066732] [2023-11-17 12:29:45,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:29:45,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:29:45,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:29:45,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:29:45,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:29:45,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868066732] [2023-11-17 12:29:45,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868066732] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:29:45,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:29:45,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:29:45,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497152585] [2023-11-17 12:29:45,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:29:45,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:29:45,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:29:45,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:29:45,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:29:45,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2023-11-17 12:29:45,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 209 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:45,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:29:45,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2023-11-17 12:29:45,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:29:46,200 INFO L124 PetriNetUnfolderBase]: 2955/4131 cut-off events. [2023-11-17 12:29:46,200 INFO L125 PetriNetUnfolderBase]: For 7847/7851 co-relation queries the response was YES. [2023-11-17 12:29:46,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14987 conditions, 4131 events. 2955/4131 cut-off events. For 7847/7851 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 18755 event pairs, 837 based on Foata normal form. 16/4145 useless extension candidates. Maximal degree in co-relation 5876. Up to 2701 conditions per place. [2023-11-17 12:29:46,235 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 86 selfloop transitions, 10 changer transitions 2/102 dead transitions. [2023-11-17 12:29:46,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 102 transitions, 687 flow [2023-11-17 12:29:46,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:29:46,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:29:46,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2023-11-17 12:29:46,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5863636363636363 [2023-11-17 12:29:46,237 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 129 transitions. [2023-11-17 12:29:46,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 129 transitions. [2023-11-17 12:29:46,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:29:46,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 129 transitions. [2023-11-17 12:29:46,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.8) internal successors, (129), 5 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:46,238 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:46,239 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:46,239 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 209 flow. Second operand 5 states and 129 transitions. [2023-11-17 12:29:46,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 102 transitions, 687 flow [2023-11-17 12:29:46,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 102 transitions, 674 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-17 12:29:46,246 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 297 flow [2023-11-17 12:29:46,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=297, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-11-17 12:29:46,247 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 14 predicate places. [2023-11-17 12:29:46,247 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 297 flow [2023-11-17 12:29:46,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:46,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:29:46,247 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:29:46,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 12:29:46,248 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 2 more)] === [2023-11-17 12:29:46,248 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:29:46,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1679208235, now seen corresponding path program 3 times [2023-11-17 12:29:46,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:29:46,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375483924] [2023-11-17 12:29:46,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:29:46,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:29:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:29:46,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:29:46,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:29:46,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375483924] [2023-11-17 12:29:46,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375483924] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:29:46,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472502150] [2023-11-17 12:29:46,339 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 12:29:46,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:29:46,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:29:46,341 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:29:46,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-17 12:29:46,451 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 12:29:46,451 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:29:46,453 INFO L262 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-17 12:29:46,455 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:29:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:29:46,564 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:29:46,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:29:46,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472502150] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-17 12:29:46,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-17 12:29:46,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 7 [2023-11-17 12:29:46,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096383949] [2023-11-17 12:29:46,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:29:46,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:29:46,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:29:46,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:29:46,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-17 12:29:46,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2023-11-17 12:29:46,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 297 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:46,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:29:46,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2023-11-17 12:29:46,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:29:47,105 INFO L124 PetriNetUnfolderBase]: 3373/4763 cut-off events. [2023-11-17 12:29:47,106 INFO L125 PetriNetUnfolderBase]: For 11263/11267 co-relation queries the response was YES. [2023-11-17 12:29:47,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18392 conditions, 4763 events. 3373/4763 cut-off events. For 11263/11267 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 22789 event pairs, 565 based on Foata normal form. 64/4825 useless extension candidates. Maximal degree in co-relation 12425. Up to 2431 conditions per place. [2023-11-17 12:29:47,141 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 73 selfloop transitions, 13 changer transitions 0/90 dead transitions. [2023-11-17 12:29:47,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 90 transitions, 658 flow [2023-11-17 12:29:47,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:29:47,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:29:47,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2023-11-17 12:29:47,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6079545454545454 [2023-11-17 12:29:47,143 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 107 transitions. [2023-11-17 12:29:47,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 107 transitions. [2023-11-17 12:29:47,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:29:47,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 107 transitions. [2023-11-17 12:29:47,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:47,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:47,144 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:47,145 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 297 flow. Second operand 4 states and 107 transitions. [2023-11-17 12:29:47,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 90 transitions, 658 flow [2023-11-17 12:29:47,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 90 transitions, 658 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 12:29:47,152 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 399 flow [2023-11-17 12:29:47,152 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=399, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2023-11-17 12:29:47,154 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 20 predicate places. [2023-11-17 12:29:47,154 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 399 flow [2023-11-17 12:29:47,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:47,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:29:47,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:29:47,165 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-17 12:29:47,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-17 12:29:47,361 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 2 more)] === [2023-11-17 12:29:47,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:29:47,362 INFO L85 PathProgramCache]: Analyzing trace with hash -269251560, now seen corresponding path program 3 times [2023-11-17 12:29:47,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:29:47,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953368887] [2023-11-17 12:29:47,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:29:47,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:29:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:29:47,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:29:47,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:29:47,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953368887] [2023-11-17 12:29:47,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953368887] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:29:47,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:29:47,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:29:47,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850584824] [2023-11-17 12:29:47,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:29:47,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:29:47,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:29:47,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:29:47,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:29:47,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2023-11-17 12:29:47,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 399 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:47,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:29:47,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2023-11-17 12:29:47,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:29:48,102 INFO L124 PetriNetUnfolderBase]: 3973/5738 cut-off events. [2023-11-17 12:29:48,102 INFO L125 PetriNetUnfolderBase]: For 20859/20863 co-relation queries the response was YES. [2023-11-17 12:29:48,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24382 conditions, 5738 events. 3973/5738 cut-off events. For 20859/20863 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 29127 event pairs, 1013 based on Foata normal form. 46/5782 useless extension candidates. Maximal degree in co-relation 17622. Up to 4077 conditions per place. [2023-11-17 12:29:48,149 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 108 selfloop transitions, 10 changer transitions 7/129 dead transitions. [2023-11-17 12:29:48,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 129 transitions, 1122 flow [2023-11-17 12:29:48,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:29:48,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:29:48,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 133 transitions. [2023-11-17 12:29:48,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6045454545454545 [2023-11-17 12:29:48,151 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 133 transitions. [2023-11-17 12:29:48,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 133 transitions. [2023-11-17 12:29:48,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:29:48,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 133 transitions. [2023-11-17 12:29:48,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 26.6) internal successors, (133), 5 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:48,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:48,152 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:48,152 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 399 flow. Second operand 5 states and 133 transitions. [2023-11-17 12:29:48,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 129 transitions, 1122 flow [2023-11-17 12:29:48,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 129 transitions, 1104 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-17 12:29:48,170 INFO L231 Difference]: Finished difference. Result has 63 places, 61 transitions, 487 flow [2023-11-17 12:29:48,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=487, PETRI_PLACES=63, PETRI_TRANSITIONS=61} [2023-11-17 12:29:48,171 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 25 predicate places. [2023-11-17 12:29:48,171 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 61 transitions, 487 flow [2023-11-17 12:29:48,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:48,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:29:48,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:29:48,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 12:29:48,172 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 2 more)] === [2023-11-17 12:29:48,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:29:48,172 INFO L85 PathProgramCache]: Analyzing trace with hash 94514710, now seen corresponding path program 4 times [2023-11-17 12:29:48,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:29:48,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859988968] [2023-11-17 12:29:48,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:29:48,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:29:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:29:48,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:29:48,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:29:48,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859988968] [2023-11-17 12:29:48,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859988968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:29:48,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:29:48,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:29:48,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229128152] [2023-11-17 12:29:48,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:29:48,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:29:48,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:29:48,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:29:48,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:29:48,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2023-11-17 12:29:48,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 61 transitions, 487 flow. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:48,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:29:48,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2023-11-17 12:29:48,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:29:48,836 INFO L124 PetriNetUnfolderBase]: 4121/5978 cut-off events. [2023-11-17 12:29:48,837 INFO L125 PetriNetUnfolderBase]: For 28793/28797 co-relation queries the response was YES. [2023-11-17 12:29:48,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28502 conditions, 5978 events. 4121/5978 cut-off events. For 28793/28797 co-relation queries the response was YES. Maximal size of possible extension queue 347. Compared 30769 event pairs, 1174 based on Foata normal form. 2/5976 useless extension candidates. Maximal degree in co-relation 21837. Up to 4487 conditions per place. [2023-11-17 12:29:48,897 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 92 selfloop transitions, 9 changer transitions 9/114 dead transitions. [2023-11-17 12:29:48,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 114 transitions, 1035 flow [2023-11-17 12:29:48,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:29:48,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:29:48,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 128 transitions. [2023-11-17 12:29:48,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5818181818181818 [2023-11-17 12:29:48,899 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 128 transitions. [2023-11-17 12:29:48,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 128 transitions. [2023-11-17 12:29:48,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:29:48,899 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 128 transitions. [2023-11-17 12:29:48,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 25.6) internal successors, (128), 5 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:48,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:48,900 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:48,900 INFO L175 Difference]: Start difference. First operand has 63 places, 61 transitions, 487 flow. Second operand 5 states and 128 transitions. [2023-11-17 12:29:48,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 114 transitions, 1035 flow [2023-11-17 12:29:48,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 114 transitions, 1029 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 12:29:48,923 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 510 flow [2023-11-17 12:29:48,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=510, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2023-11-17 12:29:48,923 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 29 predicate places. [2023-11-17 12:29:48,924 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 510 flow [2023-11-17 12:29:48,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:48,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:29:48,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:29:48,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 12:29:48,924 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 2 more)] === [2023-11-17 12:29:48,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:29:48,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1578919738, now seen corresponding path program 1 times [2023-11-17 12:29:48,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:29:48,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485337198] [2023-11-17 12:29:48,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:29:48,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:29:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:29:49,007 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:29:49,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:29:49,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485337198] [2023-11-17 12:29:49,007 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485337198] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:29:49,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:29:49,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:29:49,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505828264] [2023-11-17 12:29:49,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:29:49,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:29:49,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:29:49,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:29:49,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:29:49,010 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2023-11-17 12:29:49,010 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 510 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:49,010 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:29:49,010 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2023-11-17 12:29:49,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:29:49,522 INFO L124 PetriNetUnfolderBase]: 3624/5232 cut-off events. [2023-11-17 12:29:49,522 INFO L125 PetriNetUnfolderBase]: For 25011/25013 co-relation queries the response was YES. [2023-11-17 12:29:49,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25623 conditions, 5232 events. 3624/5232 cut-off events. For 25011/25013 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 26177 event pairs, 674 based on Foata normal form. 214/5445 useless extension candidates. Maximal degree in co-relation 19237. Up to 3719 conditions per place. [2023-11-17 12:29:49,578 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 96 selfloop transitions, 10 changer transitions 0/110 dead transitions. [2023-11-17 12:29:49,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 110 transitions, 1062 flow [2023-11-17 12:29:49,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:29:49,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:29:49,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2023-11-17 12:29:49,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6079545454545454 [2023-11-17 12:29:49,579 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 107 transitions. [2023-11-17 12:29:49,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 107 transitions. [2023-11-17 12:29:49,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:29:49,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 107 transitions. [2023-11-17 12:29:49,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:49,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:49,581 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:49,581 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 510 flow. Second operand 4 states and 107 transitions. [2023-11-17 12:29:49,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 110 transitions, 1062 flow [2023-11-17 12:29:49,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 110 transitions, 1041 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-17 12:29:49,607 INFO L231 Difference]: Finished difference. Result has 69 places, 61 transitions, 529 flow [2023-11-17 12:29:49,607 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=486, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=529, PETRI_PLACES=69, PETRI_TRANSITIONS=61} [2023-11-17 12:29:49,608 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 31 predicate places. [2023-11-17 12:29:49,608 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 61 transitions, 529 flow [2023-11-17 12:29:49,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:49,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:29:49,608 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:29:49,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 12:29:49,609 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 2 more)] === [2023-11-17 12:29:49,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:29:49,609 INFO L85 PathProgramCache]: Analyzing trace with hash -2025774181, now seen corresponding path program 1 times [2023-11-17 12:29:49,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:29:49,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988390710] [2023-11-17 12:29:49,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:29:49,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:29:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:29:49,695 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:29:49,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:29:49,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988390710] [2023-11-17 12:29:49,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988390710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 12:29:49,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 12:29:49,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 12:29:49,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526757319] [2023-11-17 12:29:49,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 12:29:49,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 12:29:49,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:29:49,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 12:29:49,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 12:29:49,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2023-11-17 12:29:49,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 61 transitions, 529 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:49,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:29:49,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2023-11-17 12:29:49,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:29:50,057 INFO L124 PetriNetUnfolderBase]: 2326/3339 cut-off events. [2023-11-17 12:29:50,058 INFO L125 PetriNetUnfolderBase]: For 20402/20402 co-relation queries the response was YES. [2023-11-17 12:29:50,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17569 conditions, 3339 events. 2326/3339 cut-off events. For 20402/20402 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 15097 event pairs, 836 based on Foata normal form. 80/3419 useless extension candidates. Maximal degree in co-relation 6847. Up to 2997 conditions per place. [2023-11-17 12:29:50,090 INFO L140 encePairwiseOnDemand]: 40/44 looper letters, 62 selfloop transitions, 8 changer transitions 13/87 dead transitions. [2023-11-17 12:29:50,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 87 transitions, 812 flow [2023-11-17 12:29:50,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:29:50,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:29:50,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 100 transitions. [2023-11-17 12:29:50,091 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2023-11-17 12:29:50,091 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 100 transitions. [2023-11-17 12:29:50,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 100 transitions. [2023-11-17 12:29:50,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:29:50,092 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 100 transitions. [2023-11-17 12:29:50,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:50,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:50,093 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:50,093 INFO L175 Difference]: Start difference. First operand has 69 places, 61 transitions, 529 flow. Second operand 4 states and 100 transitions. [2023-11-17 12:29:50,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 87 transitions, 812 flow [2023-11-17 12:29:50,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 87 transitions, 801 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 12:29:50,106 INFO L231 Difference]: Finished difference. Result has 69 places, 56 transitions, 490 flow [2023-11-17 12:29:50,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=483, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=490, PETRI_PLACES=69, PETRI_TRANSITIONS=56} [2023-11-17 12:29:50,107 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 31 predicate places. [2023-11-17 12:29:50,107 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 56 transitions, 490 flow [2023-11-17 12:29:50,107 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:50,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:29:50,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:29:50,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 12:29:50,107 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 2 more)] === [2023-11-17 12:29:50,108 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:29:50,108 INFO L85 PathProgramCache]: Analyzing trace with hash 270609756, now seen corresponding path program 1 times [2023-11-17 12:29:50,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:29:50,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550619392] [2023-11-17 12:29:50,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:29:50,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:29:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:29:50,213 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:29:50,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:29:50,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550619392] [2023-11-17 12:29:50,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550619392] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:29:50,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098129372] [2023-11-17 12:29:50,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:29:50,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:29:50,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:29:50,216 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:29:50,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-17 12:29:50,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:29:50,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-17 12:29:50,333 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:29:50,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:29:50,367 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:29:50,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:29:50,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098129372] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:29:50,403 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:29:50,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2023-11-17 12:29:50,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873750665] [2023-11-17 12:29:50,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:29:50,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:29:50,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:29:50,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:29:50,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:29:50,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2023-11-17 12:29:50,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 56 transitions, 490 flow. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:50,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:29:50,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2023-11-17 12:29:50,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:29:50,989 INFO L124 PetriNetUnfolderBase]: 3521/5107 cut-off events. [2023-11-17 12:29:50,989 INFO L125 PetriNetUnfolderBase]: For 35194/35194 co-relation queries the response was YES. [2023-11-17 12:29:51,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26947 conditions, 5107 events. 3521/5107 cut-off events. For 35194/35194 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 24888 event pairs, 663 based on Foata normal form. 806/5913 useless extension candidates. Maximal degree in co-relation 11275. Up to 2231 conditions per place. [2023-11-17 12:29:51,034 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 138 selfloop transitions, 44 changer transitions 0/186 dead transitions. [2023-11-17 12:29:51,035 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 186 transitions, 1713 flow [2023-11-17 12:29:51,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 12:29:51,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 12:29:51,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 224 transitions. [2023-11-17 12:29:51,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2023-11-17 12:29:51,036 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 224 transitions. [2023-11-17 12:29:51,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 224 transitions. [2023-11-17 12:29:51,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:29:51,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 224 transitions. [2023-11-17 12:29:51,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 28.0) internal successors, (224), 8 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:51,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:51,039 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 44.0) internal successors, (396), 9 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:51,039 INFO L175 Difference]: Start difference. First operand has 69 places, 56 transitions, 490 flow. Second operand 8 states and 224 transitions. [2023-11-17 12:29:51,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 186 transitions, 1713 flow [2023-11-17 12:29:51,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 186 transitions, 1639 flow, removed 28 selfloop flow, removed 3 redundant places. [2023-11-17 12:29:51,070 INFO L231 Difference]: Finished difference. Result has 76 places, 91 transitions, 1093 flow [2023-11-17 12:29:51,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1093, PETRI_PLACES=76, PETRI_TRANSITIONS=91} [2023-11-17 12:29:51,071 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 38 predicate places. [2023-11-17 12:29:51,072 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 91 transitions, 1093 flow [2023-11-17 12:29:51,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 6 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:51,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:29:51,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:29:51,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-17 12:29:51,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:29:51,278 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 2 more)] === [2023-11-17 12:29:51,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:29:51,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1362091585, now seen corresponding path program 1 times [2023-11-17 12:29:51,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:29:51,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596851878] [2023-11-17 12:29:51,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:29:51,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:29:51,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:29:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:29:51,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:29:51,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596851878] [2023-11-17 12:29:51,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596851878] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:29:51,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351165111] [2023-11-17 12:29:51,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:29:51,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:29:51,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:29:51,437 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:29:51,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-17 12:29:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:29:51,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-17 12:29:51,550 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:29:51,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:29:51,591 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:29:51,639 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:29:51,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351165111] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:29:51,640 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:29:51,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3, 3] total 4 [2023-11-17 12:29:51,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74411110] [2023-11-17 12:29:51,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:29:51,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 12:29:51,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:29:51,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 12:29:51,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-17 12:29:51,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2023-11-17 12:29:51,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 91 transitions, 1093 flow. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:51,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:29:51,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2023-11-17 12:29:51,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:29:52,211 INFO L124 PetriNetUnfolderBase]: 3521/5111 cut-off events. [2023-11-17 12:29:52,212 INFO L125 PetriNetUnfolderBase]: For 46078/46089 co-relation queries the response was YES. [2023-11-17 12:29:52,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31257 conditions, 5111 events. 3521/5111 cut-off events. For 46078/46089 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 25195 event pairs, 977 based on Foata normal form. 9/5120 useless extension candidates. Maximal degree in co-relation 19870. Up to 2417 conditions per place. [2023-11-17 12:29:52,259 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 85 selfloop transitions, 39 changer transitions 4/132 dead transitions. [2023-11-17 12:29:52,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 132 transitions, 1545 flow [2023-11-17 12:29:52,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 12:29:52,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 12:29:52,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 121 transitions. [2023-11-17 12:29:52,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6875 [2023-11-17 12:29:52,260 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 121 transitions. [2023-11-17 12:29:52,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 121 transitions. [2023-11-17 12:29:52,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:29:52,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 121 transitions. [2023-11-17 12:29:52,261 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:52,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:52,261 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 44.0) internal successors, (220), 5 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:52,261 INFO L175 Difference]: Start difference. First operand has 76 places, 91 transitions, 1093 flow. Second operand 4 states and 121 transitions. [2023-11-17 12:29:52,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 132 transitions, 1545 flow [2023-11-17 12:29:52,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 132 transitions, 1461 flow, removed 40 selfloop flow, removed 1 redundant places. [2023-11-17 12:29:52,306 INFO L231 Difference]: Finished difference. Result has 79 places, 90 transitions, 1103 flow [2023-11-17 12:29:52,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1009, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1103, PETRI_PLACES=79, PETRI_TRANSITIONS=90} [2023-11-17 12:29:52,308 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 41 predicate places. [2023-11-17 12:29:52,308 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 90 transitions, 1103 flow [2023-11-17 12:29:52,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:52,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:29:52,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:29:52,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-17 12:29:52,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:29:52,515 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 2 more)] === [2023-11-17 12:29:52,516 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:29:52,516 INFO L85 PathProgramCache]: Analyzing trace with hash 662060037, now seen corresponding path program 2 times [2023-11-17 12:29:52,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:29:52,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555073138] [2023-11-17 12:29:52,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:29:52,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:29:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:29:52,648 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:29:52,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:29:52,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555073138] [2023-11-17 12:29:52,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555073138] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:29:52,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074156286] [2023-11-17 12:29:52,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-17 12:29:52,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:29:52,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:29:52,650 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:29:52,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-17 12:29:52,758 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-17 12:29:52,758 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:29:52,759 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 11 conjunts are in the unsatisfiable core [2023-11-17 12:29:52,762 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:29:52,794 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:29:52,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:29:52,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 12:29:52,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074156286] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:29:52,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:29:52,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-11-17 12:29:52,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841045664] [2023-11-17 12:29:52,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:29:52,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 12:29:52,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:29:52,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 12:29:52,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 12:29:52,832 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 44 [2023-11-17 12:29:52,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 90 transitions, 1103 flow. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:52,832 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:29:52,832 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 44 [2023-11-17 12:29:52,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:29:53,853 INFO L124 PetriNetUnfolderBase]: 6915/10041 cut-off events. [2023-11-17 12:29:53,853 INFO L125 PetriNetUnfolderBase]: For 107928/107933 co-relation queries the response was YES. [2023-11-17 12:29:53,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61243 conditions, 10041 events. 6915/10041 cut-off events. For 107928/107933 co-relation queries the response was YES. Maximal size of possible extension queue 500. Compared 56058 event pairs, 1623 based on Foata normal form. 545/10586 useless extension candidates. Maximal degree in co-relation 25437. Up to 3805 conditions per place. [2023-11-17 12:29:53,960 INFO L140 encePairwiseOnDemand]: 38/44 looper letters, 106 selfloop transitions, 93 changer transitions 4/207 dead transitions. [2023-11-17 12:29:53,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 207 transitions, 2616 flow [2023-11-17 12:29:53,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 12:29:53,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 12:29:53,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 159 transitions. [2023-11-17 12:29:53,961 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7227272727272728 [2023-11-17 12:29:53,961 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 159 transitions. [2023-11-17 12:29:53,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 159 transitions. [2023-11-17 12:29:53,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:29:53,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 159 transitions. [2023-11-17 12:29:53,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 31.8) internal successors, (159), 5 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:53,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:53,963 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 44.0) internal successors, (264), 6 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:53,963 INFO L175 Difference]: Start difference. First operand has 79 places, 90 transitions, 1103 flow. Second operand 5 states and 159 transitions. [2023-11-17 12:29:53,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 207 transitions, 2616 flow [2023-11-17 12:29:54,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 207 transitions, 2538 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-17 12:29:54,116 INFO L231 Difference]: Finished difference. Result has 83 places, 144 transitions, 2231 flow [2023-11-17 12:29:54,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=1025, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2231, PETRI_PLACES=83, PETRI_TRANSITIONS=144} [2023-11-17 12:29:54,117 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 45 predicate places. [2023-11-17 12:29:54,117 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 144 transitions, 2231 flow [2023-11-17 12:29:54,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 5 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:54,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:29:54,118 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:29:54,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-17 12:29:54,323 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 [2023-11-17 12:29:54,324 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 2 more)] === [2023-11-17 12:29:54,324 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:29:54,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1915929347, now seen corresponding path program 3 times [2023-11-17 12:29:54,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:29:54,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581328407] [2023-11-17 12:29:54,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:29:54,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:29:54,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:29:54,455 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:29:54,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:29:54,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581328407] [2023-11-17 12:29:54,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581328407] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:29:54,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [891707146] [2023-11-17 12:29:54,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-17 12:29:54,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:29:54,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:29:54,457 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:29:54,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-17 12:29:54,566 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-17 12:29:54,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:29:54,568 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 12:29:54,569 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:29:54,672 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:29:54,672 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:29:54,761 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:29:54,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [891707146] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:29:54,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:29:54,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 13 [2023-11-17 12:29:54,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712300604] [2023-11-17 12:29:54,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:29:54,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-17 12:29:54,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:29:54,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-17 12:29:54,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-11-17 12:29:54,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2023-11-17 12:29:54,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 144 transitions, 2231 flow. Second operand has 14 states, 14 states have (on average 14.428571428571429) internal successors, (202), 14 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:54,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:29:54,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2023-11-17 12:29:54,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:29:59,050 INFO L124 PetriNetUnfolderBase]: 20581/29800 cut-off events. [2023-11-17 12:29:59,051 INFO L125 PetriNetUnfolderBase]: For 371032/371041 co-relation queries the response was YES. [2023-11-17 12:29:59,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211273 conditions, 29800 events. 20581/29800 cut-off events. For 371032/371041 co-relation queries the response was YES. Maximal size of possible extension queue 1454. Compared 191643 event pairs, 1255 based on Foata normal form. 4563/34362 useless extension candidates. Maximal degree in co-relation 88297. Up to 11789 conditions per place. [2023-11-17 12:29:59,359 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 768 selfloop transitions, 480 changer transitions 15/1267 dead transitions. [2023-11-17 12:29:59,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 1267 transitions, 21084 flow [2023-11-17 12:29:59,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-17 12:29:59,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2023-11-17 12:29:59,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 813 transitions. [2023-11-17 12:29:59,363 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49938574938574937 [2023-11-17 12:29:59,363 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 813 transitions. [2023-11-17 12:29:59,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 813 transitions. [2023-11-17 12:29:59,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:29:59,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 813 transitions. [2023-11-17 12:29:59,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 21.972972972972972) internal successors, (813), 37 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:59,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 44.0) internal successors, (1672), 38 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:59,369 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 44.0) internal successors, (1672), 38 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:59,369 INFO L175 Difference]: Start difference. First operand has 83 places, 144 transitions, 2231 flow. Second operand 37 states and 813 transitions. [2023-11-17 12:29:59,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 1267 transitions, 21084 flow [2023-11-17 12:29:59,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 1267 transitions, 19474 flow, removed 716 selfloop flow, removed 1 redundant places. [2023-11-17 12:29:59,903 INFO L231 Difference]: Finished difference. Result has 148 places, 618 transitions, 11847 flow [2023-11-17 12:29:59,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=11847, PETRI_PLACES=148, PETRI_TRANSITIONS=618} [2023-11-17 12:29:59,904 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 110 predicate places. [2023-11-17 12:29:59,904 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 618 transitions, 11847 flow [2023-11-17 12:29:59,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 14.428571428571429) internal successors, (202), 14 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:29:59,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:29:59,904 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:29:59,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-17 12:30:00,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:30:00,112 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 2 more)] === [2023-11-17 12:30:00,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:30:00,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1208129860, now seen corresponding path program 4 times [2023-11-17 12:30:00,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:30:00,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333454968] [2023-11-17 12:30:00,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:30:00,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:30:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:30:00,235 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:30:00,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:30:00,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333454968] [2023-11-17 12:30:00,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333454968] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:30:00,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858705160] [2023-11-17 12:30:00,235 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-17 12:30:00,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:30:00,236 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:30:00,237 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:30:00,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-17 12:30:00,341 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-17 12:30:00,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:30:00,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 12:30:00,348 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:30:00,455 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:30:00,455 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:30:00,541 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:30:00,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858705160] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:30:00,542 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:30:00,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-11-17 12:30:00,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021326278] [2023-11-17 12:30:00,542 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:30:00,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 12:30:00,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:30:00,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 12:30:00,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-11-17 12:30:00,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2023-11-17 12:30:00,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 618 transitions, 11847 flow. Second operand has 13 states, 13 states have (on average 15.538461538461538) internal successors, (202), 13 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:30:00,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:30:00,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2023-11-17 12:30:00,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:30:08,827 INFO L124 PetriNetUnfolderBase]: 27201/38650 cut-off events. [2023-11-17 12:30:08,828 INFO L125 PetriNetUnfolderBase]: For 1636661/1636661 co-relation queries the response was YES. [2023-11-17 12:30:09,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392338 conditions, 38650 events. 27201/38650 cut-off events. For 1636661/1636661 co-relation queries the response was YES. Maximal size of possible extension queue 1841. Compared 247979 event pairs, 2884 based on Foata normal form. 1220/39870 useless extension candidates. Maximal degree in co-relation 321966. Up to 16971 conditions per place. [2023-11-17 12:30:09,505 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 1116 selfloop transitions, 223 changer transitions 132/1475 dead transitions. [2023-11-17 12:30:09,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 1475 transitions, 30817 flow [2023-11-17 12:30:09,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-17 12:30:09,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-17 12:30:09,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 389 transitions. [2023-11-17 12:30:09,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5200534759358288 [2023-11-17 12:30:09,506 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 389 transitions. [2023-11-17 12:30:09,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 389 transitions. [2023-11-17 12:30:09,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:30:09,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 389 transitions. [2023-11-17 12:30:09,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 22.88235294117647) internal successors, (389), 17 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:30:09,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 44.0) internal successors, (792), 18 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:30:09,510 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 44.0) internal successors, (792), 18 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:30:09,510 INFO L175 Difference]: Start difference. First operand has 148 places, 618 transitions, 11847 flow. Second operand 17 states and 389 transitions. [2023-11-17 12:30:09,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 1475 transitions, 30817 flow [2023-11-17 12:30:15,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 1475 transitions, 27579 flow, removed 1458 selfloop flow, removed 4 redundant places. [2023-11-17 12:30:15,806 INFO L231 Difference]: Finished difference. Result has 165 places, 762 transitions, 13536 flow [2023-11-17 12:30:15,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=9746, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=587, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=13536, PETRI_PLACES=165, PETRI_TRANSITIONS=762} [2023-11-17 12:30:15,807 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 127 predicate places. [2023-11-17 12:30:15,807 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 762 transitions, 13536 flow [2023-11-17 12:30:15,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 15.538461538461538) internal successors, (202), 13 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:30:15,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:30:15,807 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:30:15,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-17 12:30:16,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:30:16,008 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 2 more)] === [2023-11-17 12:30:16,009 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:30:16,009 INFO L85 PathProgramCache]: Analyzing trace with hash -202692858, now seen corresponding path program 5 times [2023-11-17 12:30:16,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:30:16,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376875720] [2023-11-17 12:30:16,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:30:16,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:30:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:30:16,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:30:16,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:30:16,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376875720] [2023-11-17 12:30:16,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376875720] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:30:16,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1144910289] [2023-11-17 12:30:16,124 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-17 12:30:16,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:30:16,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:30:16,129 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:30:16,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-17 12:30:16,234 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-11-17 12:30:16,235 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:30:16,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 12:30:16,238 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:30:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:30:16,339 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:30:16,424 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:30:16,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1144910289] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:30:16,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:30:16,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-11-17 12:30:16,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913483265] [2023-11-17 12:30:16,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:30:16,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 12:30:16,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:30:16,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 12:30:16,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-11-17 12:30:16,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2023-11-17 12:30:16,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 762 transitions, 13536 flow. Second operand has 13 states, 13 states have (on average 14.23076923076923) internal successors, (185), 13 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:30:16,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:30:16,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2023-11-17 12:30:16,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:30:29,190 INFO L124 PetriNetUnfolderBase]: 38537/54386 cut-off events. [2023-11-17 12:30:29,190 INFO L125 PetriNetUnfolderBase]: For 2381284/2381284 co-relation queries the response was YES. [2023-11-17 12:30:29,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 559360 conditions, 54386 events. 38537/54386 cut-off events. For 2381284/2381284 co-relation queries the response was YES. Maximal size of possible extension queue 2509. Compared 358697 event pairs, 3494 based on Foata normal form. 2336/56722 useless extension candidates. Maximal degree in co-relation 549334. Up to 23637 conditions per place. [2023-11-17 12:30:30,264 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 1513 selfloop transitions, 436 changer transitions 65/2018 dead transitions. [2023-11-17 12:30:30,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 2018 transitions, 39868 flow [2023-11-17 12:30:30,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-17 12:30:30,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-11-17 12:30:30,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 446 transitions. [2023-11-17 12:30:30,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5068181818181818 [2023-11-17 12:30:30,266 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 446 transitions. [2023-11-17 12:30:30,266 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 446 transitions. [2023-11-17 12:30:30,266 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:30:30,266 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 446 transitions. [2023-11-17 12:30:30,268 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 22.3) internal successors, (446), 20 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:30:30,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 44.0) internal successors, (924), 21 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:30:30,270 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 44.0) internal successors, (924), 21 states have internal predecessors, (924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:30:30,270 INFO L175 Difference]: Start difference. First operand has 165 places, 762 transitions, 13536 flow. Second operand 20 states and 446 transitions. [2023-11-17 12:30:30,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 2018 transitions, 39868 flow [2023-11-17 12:30:44,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 2018 transitions, 38907 flow, removed 456 selfloop flow, removed 6 redundant places. [2023-11-17 12:30:44,956 INFO L231 Difference]: Finished difference. Result has 182 places, 958 transitions, 18251 flow [2023-11-17 12:30:44,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=12809, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=252, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=18251, PETRI_PLACES=182, PETRI_TRANSITIONS=958} [2023-11-17 12:30:44,957 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 144 predicate places. [2023-11-17 12:30:44,957 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 958 transitions, 18251 flow [2023-11-17 12:30:44,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.23076923076923) internal successors, (185), 13 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:30:44,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:30:44,957 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:30:44,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-17 12:30:45,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-17 12:30:45,158 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 2 more)] === [2023-11-17 12:30:45,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:30:45,159 INFO L85 PathProgramCache]: Analyzing trace with hash -2066503249, now seen corresponding path program 6 times [2023-11-17 12:30:45,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:30:45,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970173876] [2023-11-17 12:30:45,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:30:45,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:30:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:30:45,303 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:30:45,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:30:45,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970173876] [2023-11-17 12:30:45,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970173876] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:30:45,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224393695] [2023-11-17 12:30:45,304 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-17 12:30:45,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:30:45,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:30:45,305 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:30:45,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-17 12:30:45,419 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-11-17 12:30:45,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-17 12:30:45,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 12:30:45,425 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:30:45,547 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:30:45,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:30:45,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-17 12:30:45,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224393695] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:30:45,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:30:45,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-11-17 12:30:45,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846862098] [2023-11-17 12:30:45,645 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:30:45,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 12:30:45,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:30:45,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 12:30:45,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2023-11-17 12:30:45,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 44 [2023-11-17 12:30:45,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 958 transitions, 18251 flow. Second operand has 13 states, 13 states have (on average 14.538461538461538) internal successors, (189), 13 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:30:45,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:30:45,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 44 [2023-11-17 12:30:45,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:31:09,338 INFO L124 PetriNetUnfolderBase]: 60867/85442 cut-off events. [2023-11-17 12:31:09,339 INFO L125 PetriNetUnfolderBase]: For 4510940/4510946 co-relation queries the response was YES. [2023-11-17 12:31:10,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 966304 conditions, 85442 events. 60867/85442 cut-off events. For 4510940/4510946 co-relation queries the response was YES. Maximal size of possible extension queue 3928. Compared 586226 event pairs, 3734 based on Foata normal form. 1656/87097 useless extension candidates. Maximal degree in co-relation 840693. Up to 40079 conditions per place. [2023-11-17 12:31:11,212 INFO L140 encePairwiseOnDemand]: 37/44 looper letters, 1787 selfloop transitions, 914 changer transitions 57/2762 dead transitions. [2023-11-17 12:31:11,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 2762 transitions, 62433 flow [2023-11-17 12:31:11,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-17 12:31:11,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-11-17 12:31:11,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 646 transitions. [2023-11-17 12:31:11,214 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4736070381231672 [2023-11-17 12:31:11,214 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 646 transitions. [2023-11-17 12:31:11,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 646 transitions. [2023-11-17 12:31:11,214 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:31:11,214 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 646 transitions. [2023-11-17 12:31:11,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 20.838709677419356) internal successors, (646), 31 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:31:11,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 44.0) internal successors, (1408), 32 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:31:11,218 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 44.0) internal successors, (1408), 32 states have internal predecessors, (1408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:31:11,218 INFO L175 Difference]: Start difference. First operand has 182 places, 958 transitions, 18251 flow. Second operand 31 states and 646 transitions. [2023-11-17 12:31:11,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 2762 transitions, 62433 flow [2023-11-17 12:32:07,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 2762 transitions, 58768 flow, removed 1646 selfloop flow, removed 7 redundant places. [2023-11-17 12:32:07,254 INFO L231 Difference]: Finished difference. Result has 227 places, 1494 transitions, 33067 flow [2023-11-17 12:32:07,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=44, PETRI_DIFFERENCE_MINUEND_FLOW=16910, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=934, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=418, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=33067, PETRI_PLACES=227, PETRI_TRANSITIONS=1494} [2023-11-17 12:32:07,255 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 189 predicate places. [2023-11-17 12:32:07,255 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 1494 transitions, 33067 flow [2023-11-17 12:32:07,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 14.538461538461538) internal successors, (189), 13 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:32:07,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 12:32:07,256 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 12:32:07,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-17 12:32:07,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-17 12:32:07,465 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 2 more)] === [2023-11-17 12:32:07,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 12:32:07,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1299790664, now seen corresponding path program 7 times [2023-11-17 12:32:07,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 12:32:07,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256100893] [2023-11-17 12:32:07,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 12:32:07,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 12:32:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:32:07,606 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:32:07,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 12:32:07,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256100893] [2023-11-17 12:32:07,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256100893] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-17 12:32:07,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969465532] [2023-11-17 12:32:07,607 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-11-17 12:32:07,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-17 12:32:07,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 12:32:07,608 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-17 12:32:07,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-17 12:32:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 12:32:07,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-17 12:32:07,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-17 12:32:07,830 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:32:07,830 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-17 12:32:07,922 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-17 12:32:07,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969465532] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-17 12:32:07,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-17 12:32:07,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-11-17 12:32:07,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846394518] [2023-11-17 12:32:07,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-17 12:32:07,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-17 12:32:07,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 12:32:07,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-17 12:32:07,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2023-11-17 12:32:07,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 44 [2023-11-17 12:32:07,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 1494 transitions, 33067 flow. Second operand has 13 states, 13 states have (on average 15.153846153846153) internal successors, (197), 13 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:32:07,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 12:32:07,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 44 [2023-11-17 12:32:07,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 12:32:52,487 INFO L124 PetriNetUnfolderBase]: 73713/105460 cut-off events. [2023-11-17 12:32:52,488 INFO L125 PetriNetUnfolderBase]: For 7229201/7229201 co-relation queries the response was YES. [2023-11-17 12:32:54,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1325351 conditions, 105460 events. 73713/105460 cut-off events. For 7229201/7229201 co-relation queries the response was YES. Maximal size of possible extension queue 4761. Compared 773025 event pairs, 5884 based on Foata normal form. 2306/107766 useless extension candidates. Maximal degree in co-relation 1283388. Up to 46221 conditions per place. [2023-11-17 12:32:55,206 INFO L140 encePairwiseOnDemand]: 39/44 looper letters, 2308 selfloop transitions, 687 changer transitions 195/3194 dead transitions. [2023-11-17 12:32:55,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 3194 transitions, 81363 flow [2023-11-17 12:32:55,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-17 12:32:55,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-17 12:32:55,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 359 transitions. [2023-11-17 12:32:55,207 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.543939393939394 [2023-11-17 12:32:55,207 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 359 transitions. [2023-11-17 12:32:55,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 359 transitions. [2023-11-17 12:32:55,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 12:32:55,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 359 transitions. [2023-11-17 12:32:55,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 23.933333333333334) internal successors, (359), 15 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:32:55,209 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 44.0) internal successors, (704), 16 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:32:55,210 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 44.0) internal successors, (704), 16 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 12:32:55,210 INFO L175 Difference]: Start difference. First operand has 227 places, 1494 transitions, 33067 flow. Second operand 15 states and 359 transitions. [2023-11-17 12:32:55,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 3194 transitions, 81363 flow Received shutdown request... [2023-11-17 12:38:41,965 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 12:38:41,965 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-11-17 12:38:42,648 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-17 12:38:42,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-17 12:38:42,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-17 12:38:42,849 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-11-17 12:38:42,851 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-11-17 12:38:42,851 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-11-17 12:38:42,851 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-11-17 12:38:42,851 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-17 12:38:42,851 INFO L445 BasicCegarLoop]: Path program histogram: [7, 4, 3, 1, 1, 1, 1] [2023-11-17 12:38:42,855 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 12:38:42,855 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 12:38:42,857 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 12:38:42 BasicIcfg [2023-11-17 12:38:42,858 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 12:38:42,858 INFO L158 Benchmark]: Toolchain (without parser) took 541589.13ms. Allocated memory was 287.3MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 241.7MB in the beginning and 5.1GB in the end (delta: -4.9GB). Peak memory consumption was 5.5GB. Max. memory is 8.0GB. [2023-11-17 12:38:42,858 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 181.4MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 12:38:42,858 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.35ms. Allocated memory is still 287.3MB. Free memory was 241.7MB in the beginning and 230.2MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-11-17 12:38:42,859 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.30ms. Allocated memory is still 287.3MB. Free memory was 229.8MB in the beginning and 228.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 12:38:42,859 INFO L158 Benchmark]: Boogie Preprocessor took 29.37ms. Allocated memory is still 287.3MB. Free memory was 228.1MB in the beginning and 226.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 12:38:42,859 INFO L158 Benchmark]: RCFGBuilder took 636.63ms. Allocated memory is still 287.3MB. Free memory was 226.4MB in the beginning and 186.6MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2023-11-17 12:38:42,859 INFO L158 Benchmark]: TraceAbstraction took 540603.30ms. Allocated memory was 287.3MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 185.8MB in the beginning and 5.1GB in the end (delta: -4.9GB). Peak memory consumption was 5.5GB. Max. memory is 8.0GB. [2023-11-17 12:38:42,860 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 181.4MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 259.35ms. Allocated memory is still 287.3MB. Free memory was 241.7MB in the beginning and 230.2MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 49.30ms. Allocated memory is still 287.3MB. Free memory was 229.8MB in the beginning and 228.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.37ms. Allocated memory is still 287.3MB. Free memory was 228.1MB in the beginning and 226.6MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 636.63ms. Allocated memory is still 287.3MB. Free memory was 226.4MB in the beginning and 186.6MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. * TraceAbstraction took 540603.30ms. Allocated memory was 287.3MB in the beginning and 7.9GB in the end (delta: 7.6GB). Free memory was 185.8MB in the beginning and 5.1GB in the end (delta: -4.9GB). Peak memory consumption was 5.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 0.2s, 43 PlacesBefore, 38 PlacesAfterwards, 34 TransitionsBefore, 29 TransitionsAfterwards, 416 CoEnabledTransitionPairs, 1 FixpointIterations, 1 TrivialSequentialCompositions, 4 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 5 TotalNumberOfCompositions, 328 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 328, independent: 328, independent conditional: 0, independent unconditional: 328, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 216, independent: 216, independent conditional: 0, independent unconditional: 216, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 216, independent: 216, independent conditional: 0, independent unconditional: 216, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 328, independent: 112, independent conditional: 0, independent unconditional: 112, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 216, unknown conditional: 0, unknown unconditional: 216] , Statistics on independence cache: Total cache size (in pairs): 112, Positive cache size: 112, Positive conditional cache size: 0, Positive unconditional cache size: 112, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that a call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 56 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 540.4s, OverallIterations: 18, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 532.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2097 SdHoareTripleChecker+Valid, 2.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2097 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 138 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4045 IncrementalHoareTripleChecker+Invalid, 4183 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 138 mSolverCounterUnsat, 0 mSDtfsCounter, 4045 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 707 GetRequests, 521 SyntacticMatches, 7 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 947 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33067occurred in iteration=17, InterpolantAutomatonStates: 166, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 785 NumberOfCodeBlocks, 785 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 1035 ConstructedInterpolants, 0 QuantifiedInterpolants, 5201 SizeOfPredicates, 32 NumberOfNonLiveVariables, 2476 ConjunctsInSsa, 68 ConjunctsInUnsatCore, 38 InterpolantComputations, 10 PerfectInterpolantSequences, 78/138 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown