/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-commit-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 02:14:00,491 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 02:14:00,545 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 02:14:00,554 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 02:14:00,554 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 02:14:00,592 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 02:14:00,592 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 02:14:00,593 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 02:14:00,593 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 02:14:00,597 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 02:14:00,597 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 02:14:00,598 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 02:14:00,598 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 02:14:00,599 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 02:14:00,599 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 02:14:00,599 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 02:14:00,600 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 02:14:00,600 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 02:14:00,600 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 02:14:00,600 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 02:14:00,600 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 02:14:00,601 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 02:14:00,601 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 02:14:00,602 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 02:14:00,602 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 02:14:00,602 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 02:14:00,602 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 02:14:00,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 02:14:00,603 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 02:14:00,603 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 02:14:00,604 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 02:14:00,604 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 02:14:00,604 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 02:14:00,604 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 02:14:00,604 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 02:14:00,605 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-24 02:14:00,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 02:14:00,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 02:14:00,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 02:14:00,951 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 02:14:00,952 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 02:14:00,954 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-commit-1.wvr.c [2023-08-24 02:14:02,176 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 02:14:02,424 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 02:14:02,424 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-commit-1.wvr.c [2023-08-24 02:14:02,436 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c88098be/1cc77b2ba6a847bcb6833ba9e63661ed/FLAGde3d58a65 [2023-08-24 02:14:02,451 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c88098be/1cc77b2ba6a847bcb6833ba9e63661ed [2023-08-24 02:14:02,455 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 02:14:02,458 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 02:14:02,461 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 02:14:02,461 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 02:14:02,463 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 02:14:02,465 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 02:14:02" (1/1) ... [2023-08-24 02:14:02,466 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@599ffb29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:14:02, skipping insertion in model container [2023-08-24 02:14:02,466 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 02:14:02" (1/1) ... [2023-08-24 02:14:02,499 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 02:14:02,687 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-commit-1.wvr.c[4604,4617] [2023-08-24 02:14:02,696 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 02:14:02,709 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 02:14:02,753 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-commit-1.wvr.c[4604,4617] [2023-08-24 02:14:02,755 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 02:14:02,763 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 02:14:02,764 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 02:14:02,769 INFO L206 MainTranslator]: Completed translation [2023-08-24 02:14:02,770 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:14:02 WrapperNode [2023-08-24 02:14:02,770 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 02:14:02,771 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 02:14:02,771 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 02:14:02,771 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 02:14:02,777 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:14:02" (1/1) ... [2023-08-24 02:14:02,801 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:14:02" (1/1) ... [2023-08-24 02:14:02,839 INFO L138 Inliner]: procedures = 25, calls = 68, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 350 [2023-08-24 02:14:02,839 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 02:14:02,840 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 02:14:02,840 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 02:14:02,840 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 02:14:02,850 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:14:02" (1/1) ... [2023-08-24 02:14:02,850 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:14:02" (1/1) ... [2023-08-24 02:14:02,857 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:14:02" (1/1) ... [2023-08-24 02:14:02,857 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:14:02" (1/1) ... [2023-08-24 02:14:02,866 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:14:02" (1/1) ... [2023-08-24 02:14:02,870 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:14:02" (1/1) ... [2023-08-24 02:14:02,872 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:14:02" (1/1) ... [2023-08-24 02:14:02,873 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:14:02" (1/1) ... [2023-08-24 02:14:02,876 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 02:14:02,877 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 02:14:02,877 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 02:14:02,877 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 02:14:02,878 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:14:02" (1/1) ... [2023-08-24 02:14:02,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 02:14:02,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 02:14:02,906 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 02:14:02,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 02:14:02,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 02:14:02,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 02:14:02,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 02:14:02,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 02:14:02,942 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 02:14:02,943 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 02:14:02,943 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 02:14:02,943 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 02:14:02,943 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 02:14:02,943 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 02:14:02,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 02:14:02,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 02:14:02,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 02:14:02,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 02:14:02,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 02:14:02,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 02:14:02,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 02:14:02,945 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 02:14:03,049 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 02:14:03,051 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 02:14:03,554 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 02:14:03,730 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 02:14:03,730 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-24 02:14:03,732 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 02:14:03 BoogieIcfgContainer [2023-08-24 02:14:03,732 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 02:14:03,734 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 02:14:03,734 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 02:14:03,736 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 02:14:03,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 02:14:02" (1/3) ... [2023-08-24 02:14:03,737 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6f9f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 02:14:03, skipping insertion in model container [2023-08-24 02:14:03,737 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:14:02" (2/3) ... [2023-08-24 02:14:03,738 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e6f9f97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 02:14:03, skipping insertion in model container [2023-08-24 02:14:03,738 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 02:14:03" (3/3) ... [2023-08-24 02:14:03,739 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2023-08-24 02:14:03,754 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 02:14:03,755 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 02:14:03,755 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 02:14:03,828 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 02:14:03,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 251 transitions, 526 flow [2023-08-24 02:14:03,935 INFO L124 PetriNetUnfolderBase]: 19/248 cut-off events. [2023-08-24 02:14:03,935 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 02:14:03,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 248 events. 19/248 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 144 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 212. Up to 2 conditions per place. [2023-08-24 02:14:03,941 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 251 transitions, 526 flow [2023-08-24 02:14:03,946 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 229 places, 238 transitions, 494 flow [2023-08-24 02:14:03,949 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 02:14:03,956 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 229 places, 238 transitions, 494 flow [2023-08-24 02:14:03,958 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 229 places, 238 transitions, 494 flow [2023-08-24 02:14:03,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 229 places, 238 transitions, 494 flow [2023-08-24 02:14:04,022 INFO L124 PetriNetUnfolderBase]: 19/238 cut-off events. [2023-08-24 02:14:04,023 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 02:14:04,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 251 conditions, 238 events. 19/238 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 143 event pairs, 0 based on Foata normal form. 0/219 useless extension candidates. Maximal degree in co-relation 212. Up to 2 conditions per place. [2023-08-24 02:14:04,028 INFO L119 LiptonReduction]: Number of co-enabled transitions 1460 [2023-08-24 02:14:12,320 INFO L134 LiptonReduction]: Checked pairs total: 2881 [2023-08-24 02:14:12,321 INFO L136 LiptonReduction]: Total number of compositions: 253 [2023-08-24 02:14:12,333 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 02:14:12,338 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e1c3a68, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 02:14:12,338 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 02:14:12,344 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 02:14:12,345 INFO L124 PetriNetUnfolderBase]: 6/29 cut-off events. [2023-08-24 02:14:12,345 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 02:14:12,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:14:12,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 02:14:12,346 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 02:14:12,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:14:12,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1396026719, now seen corresponding path program 1 times [2023-08-24 02:14:12,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:14:12,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82974839] [2023-08-24 02:14:12,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:14:12,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:14:12,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:14:12,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:14:12,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:14:12,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82974839] [2023-08-24 02:14:12,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82974839] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 02:14:12,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 02:14:12,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 02:14:12,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241738824] [2023-08-24 02:14:12,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 02:14:12,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 02:14:12,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:14:12,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 02:14:12,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 02:14:12,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 220 out of 504 [2023-08-24 02:14:12,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:12,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:14:12,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 220 of 504 [2023-08-24 02:14:12,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:14:13,162 INFO L124 PetriNetUnfolderBase]: 451/666 cut-off events. [2023-08-24 02:14:13,163 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-08-24 02:14:13,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1414 conditions, 666 events. 451/666 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2337 event pairs, 73 based on Foata normal form. 1/500 useless extension candidates. Maximal degree in co-relation 1134. Up to 548 conditions per place. [2023-08-24 02:14:13,171 INFO L140 encePairwiseOnDemand]: 499/504 looper letters, 42 selfloop transitions, 4 changer transitions 1/47 dead transitions. [2023-08-24 02:14:13,171 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 221 flow [2023-08-24 02:14:13,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 02:14:13,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 02:14:13,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 708 transitions. [2023-08-24 02:14:13,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46825396825396826 [2023-08-24 02:14:13,191 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 708 transitions. [2023-08-24 02:14:13,192 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 708 transitions. [2023-08-24 02:14:13,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:14:13,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 708 transitions. [2023-08-24 02:14:13,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:13,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:13,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:13,213 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 78 flow. Second operand 3 states and 708 transitions. [2023-08-24 02:14:13,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 221 flow [2023-08-24 02:14:13,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 47 transitions, 199 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 02:14:13,220 INFO L231 Difference]: Finished difference. Result has 31 places, 33 transitions, 92 flow [2023-08-24 02:14:13,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=31, PETRI_TRANSITIONS=33} [2023-08-24 02:14:13,224 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -3 predicate places. [2023-08-24 02:14:13,224 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 33 transitions, 92 flow [2023-08-24 02:14:13,225 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:13,225 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:14:13,225 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] [2023-08-24 02:14:13,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 02:14:13,226 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 02:14:13,233 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:14:13,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1739376497, now seen corresponding path program 1 times [2023-08-24 02:14:13,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:14:13,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941626932] [2023-08-24 02:14:13,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:14:13,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:14:13,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:14:13,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:14:13,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:14:13,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941626932] [2023-08-24 02:14:13,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941626932] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 02:14:13,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 02:14:13,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 02:14:13,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708303148] [2023-08-24 02:14:13,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 02:14:13,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 02:14:13,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:14:13,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 02:14:13,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 02:14:13,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 504 [2023-08-24 02:14:13,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 33 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 189.25) internal successors, (757), 4 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:13,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:14:13,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 504 [2023-08-24 02:14:13,448 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:14:13,662 INFO L124 PetriNetUnfolderBase]: 516/794 cut-off events. [2023-08-24 02:14:13,662 INFO L125 PetriNetUnfolderBase]: For 165/165 co-relation queries the response was YES. [2023-08-24 02:14:13,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1880 conditions, 794 events. 516/794 cut-off events. For 165/165 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2744 event pairs, 359 based on Foata normal form. 36/770 useless extension candidates. Maximal degree in co-relation 584. Up to 667 conditions per place. [2023-08-24 02:14:13,667 INFO L140 encePairwiseOnDemand]: 494/504 looper letters, 32 selfloop transitions, 2 changer transitions 24/58 dead transitions. [2023-08-24 02:14:13,667 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 58 transitions, 267 flow [2023-08-24 02:14:13,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 02:14:13,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 02:14:13,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 978 transitions. [2023-08-24 02:14:13,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880952380952381 [2023-08-24 02:14:13,671 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 978 transitions. [2023-08-24 02:14:13,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 978 transitions. [2023-08-24 02:14:13,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:14:13,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 978 transitions. [2023-08-24 02:14:13,674 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 195.6) internal successors, (978), 5 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:13,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 504.0) internal successors, (3024), 6 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:13,679 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 504.0) internal successors, (3024), 6 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:13,680 INFO L175 Difference]: Start difference. First operand has 31 places, 33 transitions, 92 flow. Second operand 5 states and 978 transitions. [2023-08-24 02:14:13,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 58 transitions, 267 flow [2023-08-24 02:14:13,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 58 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 02:14:13,682 INFO L231 Difference]: Finished difference. Result has 37 places, 34 transitions, 116 flow [2023-08-24 02:14:13,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=37, PETRI_TRANSITIONS=34} [2023-08-24 02:14:13,683 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-24 02:14:13,684 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 34 transitions, 116 flow [2023-08-24 02:14:13,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 189.25) internal successors, (757), 4 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:13,687 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:14:13,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 02:14:13,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 02:14:13,692 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 02:14:13,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:14:13,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1913333911, now seen corresponding path program 1 times [2023-08-24 02:14:13,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:14:13,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703713145] [2023-08-24 02:14:13,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:14:13,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:14:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:14:13,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 02:14:13,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:14:13,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703713145] [2023-08-24 02:14:13,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703713145] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 02:14:13,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 02:14:13,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 02:14:13,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909809814] [2023-08-24 02:14:13,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 02:14:13,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 02:14:13,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:14:13,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 02:14:13,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 02:14:13,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 219 out of 504 [2023-08-24 02:14:13,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 34 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:13,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:14:13,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 219 of 504 [2023-08-24 02:14:13,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:14:14,021 INFO L124 PetriNetUnfolderBase]: 533/811 cut-off events. [2023-08-24 02:14:14,022 INFO L125 PetriNetUnfolderBase]: For 287/287 co-relation queries the response was YES. [2023-08-24 02:14:14,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2015 conditions, 811 events. 533/811 cut-off events. For 287/287 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2953 event pairs, 183 based on Foata normal form. 48/857 useless extension candidates. Maximal degree in co-relation 2000. Up to 512 conditions per place. [2023-08-24 02:14:14,026 INFO L140 encePairwiseOnDemand]: 501/504 looper letters, 49 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-08-24 02:14:14,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 51 transitions, 265 flow [2023-08-24 02:14:14,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 02:14:14,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 02:14:14,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 706 transitions. [2023-08-24 02:14:14,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4669312169312169 [2023-08-24 02:14:14,029 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 706 transitions. [2023-08-24 02:14:14,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 706 transitions. [2023-08-24 02:14:14,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:14:14,029 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 706 transitions. [2023-08-24 02:14:14,031 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.33333333333334) internal successors, (706), 3 states have internal predecessors, (706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:14,034 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:14,034 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:14,034 INFO L175 Difference]: Start difference. First operand has 37 places, 34 transitions, 116 flow. Second operand 3 states and 706 transitions. [2023-08-24 02:14:14,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 51 transitions, 265 flow [2023-08-24 02:14:14,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 51 transitions, 253 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-24 02:14:14,039 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 112 flow [2023-08-24 02:14:14,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2023-08-24 02:14:14,040 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-08-24 02:14:14,043 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 112 flow [2023-08-24 02:14:14,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.33333333333334) internal successors, (679), 3 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:14,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:14:14,044 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 02:14:14,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 02:14:14,044 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 02:14:14,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:14:14,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1625216484, now seen corresponding path program 1 times [2023-08-24 02:14:14,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:14:14,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651206013] [2023-08-24 02:14:14,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:14:14,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:14:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:14:14,219 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 02:14:14,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:14:14,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651206013] [2023-08-24 02:14:14,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651206013] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 02:14:14,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 02:14:14,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 02:14:14,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721168220] [2023-08-24 02:14:14,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 02:14:14,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 02:14:14,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:14:14,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 02:14:14,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 02:14:14,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 504 [2023-08-24 02:14:14,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:14,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:14:14,226 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 504 [2023-08-24 02:14:14,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:14:14,411 INFO L124 PetriNetUnfolderBase]: 549/835 cut-off events. [2023-08-24 02:14:14,412 INFO L125 PetriNetUnfolderBase]: For 391/391 co-relation queries the response was YES. [2023-08-24 02:14:14,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2163 conditions, 835 events. 549/835 cut-off events. For 391/391 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2944 event pairs, 167 based on Foata normal form. 30/862 useless extension candidates. Maximal degree in co-relation 2143. Up to 520 conditions per place. [2023-08-24 02:14:14,416 INFO L140 encePairwiseOnDemand]: 501/504 looper letters, 43 selfloop transitions, 2 changer transitions 6/51 dead transitions. [2023-08-24 02:14:14,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 51 transitions, 259 flow [2023-08-24 02:14:14,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 02:14:14,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 02:14:14,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 699 transitions. [2023-08-24 02:14:14,418 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4623015873015873 [2023-08-24 02:14:14,419 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 699 transitions. [2023-08-24 02:14:14,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 699 transitions. [2023-08-24 02:14:14,419 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:14:14,419 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 699 transitions. [2023-08-24 02:14:14,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:14,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:14,424 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:14,424 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 112 flow. Second operand 3 states and 699 transitions. [2023-08-24 02:14:14,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 51 transitions, 259 flow [2023-08-24 02:14:14,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 51 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 02:14:14,428 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 118 flow [2023-08-24 02:14:14,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2023-08-24 02:14:14,430 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2023-08-24 02:14:14,430 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 118 flow [2023-08-24 02:14:14,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:14,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:14:14,431 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] [2023-08-24 02:14:14,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 02:14:14,431 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 02:14:14,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:14:14,432 INFO L85 PathProgramCache]: Analyzing trace with hash -878592147, now seen corresponding path program 1 times [2023-08-24 02:14:14,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:14:14,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547475053] [2023-08-24 02:14:14,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:14:14,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:14:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:14:14,605 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 02:14:14,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:14:14,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547475053] [2023-08-24 02:14:14,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547475053] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 02:14:14,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 02:14:14,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 02:14:14,606 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101605710] [2023-08-24 02:14:14,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 02:14:14,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 02:14:14,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:14:14,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 02:14:14,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 02:14:14,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 504 [2023-08-24 02:14:14,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 118 flow. Second operand has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:14,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:14:14,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 504 [2023-08-24 02:14:14,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:14:14,820 INFO L124 PetriNetUnfolderBase]: 733/1147 cut-off events. [2023-08-24 02:14:14,820 INFO L125 PetriNetUnfolderBase]: For 670/670 co-relation queries the response was YES. [2023-08-24 02:14:14,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3037 conditions, 1147 events. 733/1147 cut-off events. For 670/670 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 4509 event pairs, 587 based on Foata normal form. 26/1168 useless extension candidates. Maximal degree in co-relation 3015. Up to 833 conditions per place. [2023-08-24 02:14:14,825 INFO L140 encePairwiseOnDemand]: 499/504 looper letters, 32 selfloop transitions, 3 changer transitions 23/58 dead transitions. [2023-08-24 02:14:14,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 58 transitions, 302 flow [2023-08-24 02:14:14,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 02:14:14,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 02:14:14,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 791 transitions. [2023-08-24 02:14:14,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2023-08-24 02:14:14,828 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 791 transitions. [2023-08-24 02:14:14,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 791 transitions. [2023-08-24 02:14:14,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:14:14,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 791 transitions. [2023-08-24 02:14:14,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 197.75) internal successors, (791), 4 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:14,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 504.0) internal successors, (2520), 5 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:14,835 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 504.0) internal successors, (2520), 5 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:14,835 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 118 flow. Second operand 4 states and 791 transitions. [2023-08-24 02:14:14,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 58 transitions, 302 flow [2023-08-24 02:14:14,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 58 transitions, 300 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 02:14:14,837 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 134 flow [2023-08-24 02:14:14,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2023-08-24 02:14:14,840 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-08-24 02:14:14,840 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 134 flow [2023-08-24 02:14:14,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:14,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:14:14,840 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] [2023-08-24 02:14:14,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 02:14:14,841 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 02:14:14,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:14:14,841 INFO L85 PathProgramCache]: Analyzing trace with hash 2081456295, now seen corresponding path program 1 times [2023-08-24 02:14:14,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:14:14,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196886983] [2023-08-24 02:14:14,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:14:14,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:14:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:14:14,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 02:14:14,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:14:14,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196886983] [2023-08-24 02:14:14,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196886983] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 02:14:14,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 02:14:14,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 02:14:14,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351499034] [2023-08-24 02:14:14,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 02:14:14,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 02:14:14,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:14:14,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 02:14:14,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 02:14:14,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 504 [2023-08-24 02:14:14,994 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 190.25) internal successors, (761), 4 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:14,995 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:14:14,995 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 504 [2023-08-24 02:14:14,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:14:15,177 INFO L124 PetriNetUnfolderBase]: 634/996 cut-off events. [2023-08-24 02:14:15,177 INFO L125 PetriNetUnfolderBase]: For 637/637 co-relation queries the response was YES. [2023-08-24 02:14:15,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2658 conditions, 996 events. 634/996 cut-off events. For 637/637 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 3740 event pairs, 505 based on Foata normal form. 18/1011 useless extension candidates. Maximal degree in co-relation 2631. Up to 831 conditions per place. [2023-08-24 02:14:15,183 INFO L140 encePairwiseOnDemand]: 496/504 looper letters, 30 selfloop transitions, 6 changer transitions 17/53 dead transitions. [2023-08-24 02:14:15,183 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 53 transitions, 288 flow [2023-08-24 02:14:15,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 02:14:15,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 02:14:15,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 971 transitions. [2023-08-24 02:14:15,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38531746031746034 [2023-08-24 02:14:15,186 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 971 transitions. [2023-08-24 02:14:15,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 971 transitions. [2023-08-24 02:14:15,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:14:15,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 971 transitions. [2023-08-24 02:14:15,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 194.2) internal successors, (971), 5 states have internal predecessors, (971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:15,192 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 504.0) internal successors, (3024), 6 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:15,193 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 504.0) internal successors, (3024), 6 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:15,193 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 134 flow. Second operand 5 states and 971 transitions. [2023-08-24 02:14:15,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 53 transitions, 288 flow [2023-08-24 02:14:15,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 53 transitions, 278 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-24 02:14:15,196 INFO L231 Difference]: Finished difference. Result has 45 places, 36 transitions, 150 flow [2023-08-24 02:14:15,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=150, PETRI_PLACES=45, PETRI_TRANSITIONS=36} [2023-08-24 02:14:15,198 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 11 predicate places. [2023-08-24 02:14:15,199 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 36 transitions, 150 flow [2023-08-24 02:14:15,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 190.25) internal successors, (761), 4 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:15,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:14:15,199 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] [2023-08-24 02:14:15,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 02:14:15,199 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 02:14:15,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:14:15,200 INFO L85 PathProgramCache]: Analyzing trace with hash 190233785, now seen corresponding path program 1 times [2023-08-24 02:14:15,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:14:15,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376493914] [2023-08-24 02:14:15,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:14:15,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:14:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:14:15,467 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 02:14:15,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:14:15,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376493914] [2023-08-24 02:14:15,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376493914] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 02:14:15,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 02:14:15,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 02:14:15,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196687208] [2023-08-24 02:14:15,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 02:14:15,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 02:14:15,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:14:15,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 02:14:15,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 02:14:15,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 504 [2023-08-24 02:14:15,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 36 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:15,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:14:15,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 504 [2023-08-24 02:14:15,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:14:15,579 INFO L124 PetriNetUnfolderBase]: 353/547 cut-off events. [2023-08-24 02:14:15,579 INFO L125 PetriNetUnfolderBase]: For 347/347 co-relation queries the response was YES. [2023-08-24 02:14:15,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1475 conditions, 547 events. 353/547 cut-off events. For 347/347 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1618 event pairs, 139 based on Foata normal form. 14/560 useless extension candidates. Maximal degree in co-relation 1445. Up to 460 conditions per place. [2023-08-24 02:14:15,582 INFO L140 encePairwiseOnDemand]: 501/504 looper letters, 37 selfloop transitions, 2 changer transitions 7/46 dead transitions. [2023-08-24 02:14:15,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 46 transitions, 267 flow [2023-08-24 02:14:15,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 02:14:15,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 02:14:15,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 689 transitions. [2023-08-24 02:14:15,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4556878306878307 [2023-08-24 02:14:15,585 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 689 transitions. [2023-08-24 02:14:15,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 689 transitions. [2023-08-24 02:14:15,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:14:15,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 689 transitions. [2023-08-24 02:14:15,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 229.66666666666666) internal successors, (689), 3 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:15,589 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:15,589 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 504.0) internal successors, (2016), 4 states have internal predecessors, (2016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:15,589 INFO L175 Difference]: Start difference. First operand has 45 places, 36 transitions, 150 flow. Second operand 3 states and 689 transitions. [2023-08-24 02:14:15,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 46 transitions, 267 flow [2023-08-24 02:14:15,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 46 transitions, 253 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-24 02:14:15,593 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 150 flow [2023-08-24 02:14:15,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2023-08-24 02:14:15,594 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 11 predicate places. [2023-08-24 02:14:15,594 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 150 flow [2023-08-24 02:14:15,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.66666666666666) internal successors, (674), 3 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:15,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:14:15,594 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] [2023-08-24 02:14:15,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 02:14:15,595 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 02:14:15,595 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:14:15,595 INFO L85 PathProgramCache]: Analyzing trace with hash -447511681, now seen corresponding path program 1 times [2023-08-24 02:14:15,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:14:15,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000199521] [2023-08-24 02:14:15,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:14:15,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:14:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:14:15,873 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 02:14:15,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:14:15,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000199521] [2023-08-24 02:14:15,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000199521] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 02:14:15,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 02:14:15,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 02:14:15,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702745579] [2023-08-24 02:14:15,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 02:14:15,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 02:14:15,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:14:15,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 02:14:15,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 02:14:15,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 504 [2023-08-24 02:14:15,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 221.6) internal successors, (1108), 5 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:15,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:14:15,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 504 [2023-08-24 02:14:15,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:14:16,108 INFO L124 PetriNetUnfolderBase]: 881/1331 cut-off events. [2023-08-24 02:14:16,108 INFO L125 PetriNetUnfolderBase]: For 970/970 co-relation queries the response was YES. [2023-08-24 02:14:16,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3770 conditions, 1331 events. 881/1331 cut-off events. For 970/970 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4920 event pairs, 346 based on Foata normal form. 42/1372 useless extension candidates. Maximal degree in co-relation 3742. Up to 492 conditions per place. [2023-08-24 02:14:16,116 INFO L140 encePairwiseOnDemand]: 499/504 looper letters, 64 selfloop transitions, 9 changer transitions 0/73 dead transitions. [2023-08-24 02:14:16,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 73 transitions, 422 flow [2023-08-24 02:14:16,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 02:14:16,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 02:14:16,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 930 transitions. [2023-08-24 02:14:16,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46130952380952384 [2023-08-24 02:14:16,119 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 930 transitions. [2023-08-24 02:14:16,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 930 transitions. [2023-08-24 02:14:16,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:14:16,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 930 transitions. [2023-08-24 02:14:16,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 232.5) internal successors, (930), 4 states have internal predecessors, (930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:16,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 504.0) internal successors, (2520), 5 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:16,125 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 504.0) internal successors, (2520), 5 states have internal predecessors, (2520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:16,125 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 150 flow. Second operand 4 states and 930 transitions. [2023-08-24 02:14:16,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 73 transitions, 422 flow [2023-08-24 02:14:16,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 73 transitions, 418 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 02:14:16,128 INFO L231 Difference]: Finished difference. Result has 49 places, 43 transitions, 219 flow [2023-08-24 02:14:16,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=219, PETRI_PLACES=49, PETRI_TRANSITIONS=43} [2023-08-24 02:14:16,129 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 15 predicate places. [2023-08-24 02:14:16,129 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 43 transitions, 219 flow [2023-08-24 02:14:16,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 221.6) internal successors, (1108), 5 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:16,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:14:16,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 02:14:16,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 02:14:16,130 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 02:14:16,130 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:14:16,130 INFO L85 PathProgramCache]: Analyzing trace with hash 2035079892, now seen corresponding path program 1 times [2023-08-24 02:14:16,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:14:16,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262738211] [2023-08-24 02:14:16,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:14:16,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:14:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:14:16,338 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 02:14:16,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:14:16,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262738211] [2023-08-24 02:14:16,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262738211] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 02:14:16,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631085243] [2023-08-24 02:14:16,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:14:16,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:14:16,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 02:14:16,349 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 02:14:16,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 02:14:16,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:14:16,506 INFO L262 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 02:14:16,512 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 02:14:16,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 02:14:16,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 02:14:16,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-24 02:14:16,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631085243] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 02:14:16,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 02:14:16,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-24 02:14:16,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768222001] [2023-08-24 02:14:16,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 02:14:16,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 02:14:16,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:14:16,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 02:14:16,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-08-24 02:14:16,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 504 [2023-08-24 02:14:16,714 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 43 transitions, 219 flow. Second operand has 12 states, 12 states have (on average 185.83333333333334) internal successors, (2230), 12 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:16,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:14:16,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 504 [2023-08-24 02:14:16,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:14:17,047 INFO L124 PetriNetUnfolderBase]: 949/1470 cut-off events. [2023-08-24 02:14:17,047 INFO L125 PetriNetUnfolderBase]: For 1943/1943 co-relation queries the response was YES. [2023-08-24 02:14:17,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4703 conditions, 1470 events. 949/1470 cut-off events. For 1943/1943 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 5640 event pairs, 669 based on Foata normal form. 2/1470 useless extension candidates. Maximal degree in co-relation 4308. Up to 1331 conditions per place. [2023-08-24 02:14:17,057 INFO L140 encePairwiseOnDemand]: 498/504 looper letters, 41 selfloop transitions, 3 changer transitions 32/76 dead transitions. [2023-08-24 02:14:17,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 76 transitions, 486 flow [2023-08-24 02:14:17,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 02:14:17,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 02:14:17,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1337 transitions. [2023-08-24 02:14:17,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37896825396825395 [2023-08-24 02:14:17,062 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1337 transitions. [2023-08-24 02:14:17,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1337 transitions. [2023-08-24 02:14:17,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:14:17,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1337 transitions. [2023-08-24 02:14:17,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:17,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 504.0) internal successors, (4032), 8 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:17,071 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 504.0) internal successors, (4032), 8 states have internal predecessors, (4032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:17,071 INFO L175 Difference]: Start difference. First operand has 49 places, 43 transitions, 219 flow. Second operand 7 states and 1337 transitions. [2023-08-24 02:14:17,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 76 transitions, 486 flow [2023-08-24 02:14:17,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 76 transitions, 464 flow, removed 11 selfloop flow, removed 0 redundant places. [2023-08-24 02:14:17,077 INFO L231 Difference]: Finished difference. Result has 59 places, 44 transitions, 223 flow [2023-08-24 02:14:17,077 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=223, PETRI_PLACES=59, PETRI_TRANSITIONS=44} [2023-08-24 02:14:17,078 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 25 predicate places. [2023-08-24 02:14:17,078 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 44 transitions, 223 flow [2023-08-24 02:14:17,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 185.83333333333334) internal successors, (2230), 12 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:17,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:14:17,080 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 02:14:17,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 02:14:17,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:14:17,287 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 02:14:17,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:14:17,287 INFO L85 PathProgramCache]: Analyzing trace with hash -137605045, now seen corresponding path program 2 times [2023-08-24 02:14:17,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:14:17,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699805625] [2023-08-24 02:14:17,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:14:17,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:14:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:14:17,708 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-24 02:14:17,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:14:17,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699805625] [2023-08-24 02:14:17,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699805625] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 02:14:17,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704615611] [2023-08-24 02:14:17,708 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 02:14:17,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:14:17,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 02:14:17,710 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 02:14:17,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 02:14:17,891 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 02:14:17,892 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 02:14:17,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 12 conjunts are in the unsatisfiable core [2023-08-24 02:14:17,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 02:14:17,991 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-24 02:14:17,992 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 02:14:18,085 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-24 02:14:18,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704615611] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 02:14:18,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 02:14:18,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-24 02:14:18,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242633193] [2023-08-24 02:14:18,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 02:14:18,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 02:14:18,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:14:18,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 02:14:18,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-08-24 02:14:18,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 182 out of 504 [2023-08-24 02:14:18,092 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 44 transitions, 223 flow. Second operand has 12 states, 12 states have (on average 186.16666666666666) internal successors, (2234), 12 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:18,092 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:14:18,092 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 182 of 504 [2023-08-24 02:14:18,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:14:18,531 INFO L124 PetriNetUnfolderBase]: 1118/1782 cut-off events. [2023-08-24 02:14:18,531 INFO L125 PetriNetUnfolderBase]: For 2155/2155 co-relation queries the response was YES. [2023-08-24 02:14:18,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5469 conditions, 1782 events. 1118/1782 cut-off events. For 2155/2155 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 7451 event pairs, 731 based on Foata normal form. 132/1914 useless extension candidates. Maximal degree in co-relation 5433. Up to 1328 conditions per place. [2023-08-24 02:14:18,543 INFO L140 encePairwiseOnDemand]: 497/504 looper letters, 39 selfloop transitions, 6 changer transitions 44/89 dead transitions. [2023-08-24 02:14:18,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 89 transitions, 596 flow [2023-08-24 02:14:18,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-24 02:14:18,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-24 02:14:18,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1710 transitions. [2023-08-24 02:14:18,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.376984126984127 [2023-08-24 02:14:18,548 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1710 transitions. [2023-08-24 02:14:18,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1710 transitions. [2023-08-24 02:14:18,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:14:18,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1710 transitions. [2023-08-24 02:14:18,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 190.0) internal successors, (1710), 9 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:18,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 504.0) internal successors, (5040), 10 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:18,559 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 504.0) internal successors, (5040), 10 states have internal predecessors, (5040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:18,559 INFO L175 Difference]: Start difference. First operand has 59 places, 44 transitions, 223 flow. Second operand 9 states and 1710 transitions. [2023-08-24 02:14:18,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 89 transitions, 596 flow [2023-08-24 02:14:18,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 89 transitions, 574 flow, removed 9 selfloop flow, removed 5 redundant places. [2023-08-24 02:14:18,564 INFO L231 Difference]: Finished difference. Result has 62 places, 45 transitions, 237 flow [2023-08-24 02:14:18,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=504, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=237, PETRI_PLACES=62, PETRI_TRANSITIONS=45} [2023-08-24 02:14:18,565 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 28 predicate places. [2023-08-24 02:14:18,565 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 45 transitions, 237 flow [2023-08-24 02:14:18,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 186.16666666666666) internal successors, (2234), 12 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:14:18,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:14:18,566 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 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] [2023-08-24 02:14:18,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 02:14:18,772 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,SelfDestructingSolverStorable9 [2023-08-24 02:14:18,773 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 02:14:18,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:14:18,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1131612675, now seen corresponding path program 3 times [2023-08-24 02:14:18,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:14:18,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141428747] [2023-08-24 02:14:18,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:14:18,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:14:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:14:22,681 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:14:22,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:14:22,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141428747] [2023-08-24 02:14:22,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141428747] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 02:14:22,704 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204005443] [2023-08-24 02:14:22,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 02:14:22,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:14:22,704 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 02:14:22,709 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 02:14:22,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 02:14:23,128 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-08-24 02:14:23,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 02:14:23,132 INFO L262 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 113 conjunts are in the unsatisfiable core [2023-08-24 02:14:23,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 02:14:23,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 02:14:23,177 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 02:14:23,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 02:14:23,211 INFO L322 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-08-24 02:14:23,212 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 15 treesize of output 32 [2023-08-24 02:14:23,352 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-24 02:14:23,438 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-24 02:14:23,439 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-24 02:14:23,543 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 02:14:23,632 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 02:14:23,739 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-24 02:14:23,740 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-24 02:14:23,846 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 02:14:23,925 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 02:14:24,034 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 02:14:24,136 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 02:14:25,203 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:14:25,204 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 02:14:44,666 WARN L234 SmtUtils]: Spent 14.06s on a formula simplification that was a NOOP. DAG size: 107 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 02:15:00,812 WARN L234 SmtUtils]: Spent 12.05s on a formula simplification that was a NOOP. DAG size: 114 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-24 02:15:00,928 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:15:00,928 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 148 treesize of output 112 [2023-08-24 02:15:01,090 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:15:01,093 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 129630189 treesize of output 127238216 [2023-08-24 02:15:05,788 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:15:05,790 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 51469 treesize of output 50073 [2023-08-24 02:15:06,689 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:15:06,691 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 49997 treesize of output 47129 [2023-08-24 02:15:07,445 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:15:07,446 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 47053 treesize of output 46393 [2023-08-24 02:15:08,199 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:15:08,200 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 46317 treesize of output 34617 [2023-08-24 02:15:08,933 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:15:08,934 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 34541 treesize of output 28729 [2023-08-24 02:17:03,428 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:17:03,428 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 221 treesize of output 161 [2023-08-24 02:17:03,778 INFO L322 Elim1Store]: treesize reduction 9, result has 93.8 percent of original size [2023-08-24 02:17:03,784 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 505881570 treesize of output 496047210 [2023-08-24 02:17:09,022 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 02:17:09,085 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:17:09,086 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 52246 treesize of output 40394 [2023-08-24 02:17:09,736 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 02:17:09,791 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:17:09,792 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 39980 treesize of output 39348 [2023-08-24 02:17:10,481 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 02:17:10,536 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:17:10,538 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 39530 treesize of output 36654 [2023-08-24 02:17:11,294 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 02:17:11,362 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:17:11,363 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 36538 treesize of output 30670 [2023-08-24 02:17:12,146 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 02:17:12,212 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:17:12,213 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 2 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 8 case distinctions, treesize of input 30351 treesize of output 28971 Received shutdown request... [2023-08-24 02:27:49,007 WARN L266 SmtUtils]: Removed 2 from assertion stack [2023-08-24 02:27:49,008 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 02:27:49,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-24 02:27:49,022 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 02:27:49,025 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 02:27:49,215 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 [2023-08-24 02:27:49,215 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 26ms.. [2023-08-24 02:27:49,217 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 02:27:49,217 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 02:27:49,217 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 02:27:49,217 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 02:27:49,220 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 02:27:49,220 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 02:27:49,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 02:27:49 BasicIcfg [2023-08-24 02:27:49,223 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 02:27:49,224 INFO L158 Benchmark]: Toolchain (without parser) took 826765.42ms. Allocated memory was 354.4MB in the beginning and 1.9GB in the end (delta: 1.5GB). Free memory was 330.9MB in the beginning and 1.3GB in the end (delta: -985.6MB). Peak memory consumption was 1.2GB. Max. memory is 16.0GB. [2023-08-24 02:27:49,224 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 354.4MB. Free memory was 331.7MB in the beginning and 331.6MB in the end (delta: 75.4kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 02:27:49,224 INFO L158 Benchmark]: CACSL2BoogieTranslator took 309.53ms. Allocated memory is still 354.4MB. Free memory was 330.6MB in the beginning and 318.1MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 02:27:49,225 INFO L158 Benchmark]: Boogie Procedure Inliner took 68.38ms. Allocated memory is still 354.4MB. Free memory was 318.1MB in the beginning and 315.3MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-24 02:27:49,227 INFO L158 Benchmark]: Boogie Preprocessor took 36.66ms. Allocated memory is still 354.4MB. Free memory was 315.3MB in the beginning and 313.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 02:27:49,227 INFO L158 Benchmark]: RCFGBuilder took 855.16ms. Allocated memory is still 354.4MB. Free memory was 313.2MB in the beginning and 311.5MB in the end (delta: 1.7MB). Peak memory consumption was 38.2MB. Max. memory is 16.0GB. [2023-08-24 02:27:49,227 INFO L158 Benchmark]: TraceAbstraction took 825488.90ms. Allocated memory was 354.4MB in the beginning and 1.9GB in the end (delta: 1.5GB). Free memory was 311.0MB in the beginning and 1.3GB in the end (delta: -1.0GB). Peak memory consumption was 1.2GB. Max. memory is 16.0GB. [2023-08-24 02:27:49,231 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 354.4MB. Free memory was 331.7MB in the beginning and 331.6MB in the end (delta: 75.4kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 309.53ms. Allocated memory is still 354.4MB. Free memory was 330.6MB in the beginning and 318.1MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 68.38ms. Allocated memory is still 354.4MB. Free memory was 318.1MB in the beginning and 315.3MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.66ms. Allocated memory is still 354.4MB. Free memory was 315.3MB in the beginning and 313.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 855.16ms. Allocated memory is still 354.4MB. Free memory was 313.2MB in the beginning and 311.5MB in the end (delta: 1.7MB). Peak memory consumption was 38.2MB. Max. memory is 16.0GB. * TraceAbstraction took 825488.90ms. Allocated memory was 354.4MB in the beginning and 1.9GB in the end (delta: 1.5GB). Free memory was 311.0MB in the beginning and 1.3GB in the end (delta: -1.0GB). Peak memory consumption was 1.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.4s, 229 PlacesBefore, 34 PlacesAfterwards, 238 TransitionsBefore, 30 TransitionsAfterwards, 1460 CoEnabledTransitionPairs, 7 FixpointIterations, 167 TrivialSequentialCompositions, 27 ConcurrentSequentialCompositions, 34 TrivialYvCompositions, 12 ConcurrentYvCompositions, 13 ChoiceCompositions, 253 TotalNumberOfCompositions, 2881 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2023, independent: 1934, independent conditional: 0, independent unconditional: 1934, dependent: 89, dependent conditional: 0, dependent unconditional: 89, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 860, independent: 837, independent conditional: 0, independent unconditional: 837, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2023, independent: 1097, independent conditional: 0, independent unconditional: 1097, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 860, unknown conditional: 0, unknown unconditional: 860] , Statistics on independence cache: Total cache size (in pairs): 74, Positive cache size: 65, Positive conditional cache size: 0, Positive unconditional cache size: 65, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 148]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 26ms.. - TimeoutResultAtElement [Line: 140]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 26ms.. - TimeoutResultAtElement [Line: 142]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 26ms.. - TimeoutResultAtElement [Line: 141]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 33 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 4 for 26ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 265 locations, 4 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: 825.4s, OverallIterations: 11, TraceHistogramMax: 2, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 187 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 187 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 29 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1048 IncrementalHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 29 mSolverCounterUnsat, 0 mSDtfsCounter, 1048 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 159 GetRequests, 118 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=237occurred in iteration=10, InterpolantAutomatonStates: 46, 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: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 309 NumberOfCodeBlocks, 309 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 356 ConstructedInterpolants, 0 QuantifiedInterpolants, 1114 SizeOfPredicates, 9 NumberOfNonLiveVariables, 799 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 53/61 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