/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-more-min-array.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 02:59:05,867 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 02:59:05,912 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 02:59:05,919 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 02:59:05,920 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 02:59:05,941 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 02:59:05,942 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 02:59:05,943 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 02:59:05,943 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 02:59:05,947 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 02:59:05,947 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 02:59:05,947 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 02:59:05,948 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 02:59:05,949 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 02:59:05,949 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 02:59:05,949 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 02:59:05,949 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 02:59:05,950 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 02:59:05,950 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 02:59:05,950 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 02:59:05,950 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 02:59:05,951 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 02:59:05,951 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 02:59:05,952 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 02:59:05,952 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 02:59:05,952 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 02:59:05,952 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 02:59:05,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 02:59:05,953 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 02:59:05,953 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 02:59:05,954 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 02:59:05,954 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 02:59:05,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 02:59:05,955 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 02:59:05,955 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 02:59:05,955 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-08-24 02:59:06,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 02:59:06,299 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 02:59:06,301 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 02:59:06,302 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 02:59:06,304 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 02:59:06,305 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c [2023-08-24 02:59:07,600 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 02:59:07,762 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 02:59:07,763 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-min-array.wvr.c [2023-08-24 02:59:07,773 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f59a0dae/0ba96aa0ef4140da854c527ee308034a/FLAGf9140486b [2023-08-24 02:59:07,788 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f59a0dae/0ba96aa0ef4140da854c527ee308034a [2023-08-24 02:59:07,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 02:59:07,796 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 02:59:07,801 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 02:59:07,801 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 02:59:07,803 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 02:59:07,805 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 02:59:07" (1/1) ... [2023-08-24 02:59:07,806 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b6e2719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:59:07, skipping insertion in model container [2023-08-24 02:59:07,806 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 02:59:07" (1/1) ... [2023-08-24 02:59:07,829 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 02:59:07,992 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-more-min-array.wvr.c[2553,2566] [2023-08-24 02:59:08,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 02:59:08,013 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 02:59:08,033 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-more-min-array.wvr.c[2553,2566] [2023-08-24 02:59:08,036 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 02:59:08,043 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 02:59:08,043 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 02:59:08,049 INFO L206 MainTranslator]: Completed translation [2023-08-24 02:59:08,052 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:59:08 WrapperNode [2023-08-24 02:59:08,052 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 02:59:08,053 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 02:59:08,053 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 02:59:08,053 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 02:59:08,059 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:59:08" (1/1) ... [2023-08-24 02:59:08,066 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:59:08" (1/1) ... [2023-08-24 02:59:08,090 INFO L138 Inliner]: procedures = 24, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 105 [2023-08-24 02:59:08,091 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 02:59:08,091 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 02:59:08,091 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 02:59:08,091 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 02:59:08,098 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:59:08" (1/1) ... [2023-08-24 02:59:08,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:59:08" (1/1) ... [2023-08-24 02:59:08,103 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:59:08" (1/1) ... [2023-08-24 02:59:08,103 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:59:08" (1/1) ... [2023-08-24 02:59:08,111 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:59:08" (1/1) ... [2023-08-24 02:59:08,115 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:59:08" (1/1) ... [2023-08-24 02:59:08,119 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:59:08" (1/1) ... [2023-08-24 02:59:08,120 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:59:08" (1/1) ... [2023-08-24 02:59:08,122 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 02:59:08,123 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 02:59:08,123 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 02:59:08,123 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 02:59:08,124 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:59:08" (1/1) ... [2023-08-24 02:59:08,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 02:59:08,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 02:59:08,178 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 02:59:08,202 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 02:59:08,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 02:59:08,217 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 02:59:08,217 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 02:59:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 02:59:08,218 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 02:59:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 02:59:08,218 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 02:59:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 02:59:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 02:59:08,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 02:59:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 02:59:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 02:59:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 02:59:08,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 02:59:08,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 02:59:08,220 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 02:59:08,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 02:59:08,222 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 02:59:08,316 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 02:59:08,318 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 02:59:08,608 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 02:59:08,653 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 02:59:08,653 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-24 02:59:08,655 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 02:59:08 BoogieIcfgContainer [2023-08-24 02:59:08,655 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 02:59:08,659 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 02:59:08,659 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 02:59:08,662 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 02:59:08,662 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 02:59:07" (1/3) ... [2023-08-24 02:59:08,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b0cdf3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 02:59:08, skipping insertion in model container [2023-08-24 02:59:08,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:59:08" (2/3) ... [2023-08-24 02:59:08,663 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b0cdf3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 02:59:08, skipping insertion in model container [2023-08-24 02:59:08,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 02:59:08" (3/3) ... [2023-08-24 02:59:08,664 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-min-array.wvr.c [2023-08-24 02:59:08,679 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 02:59:08,679 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 02:59:08,680 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 02:59:08,745 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-24 02:59:08,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 148 transitions, 320 flow [2023-08-24 02:59:08,885 INFO L124 PetriNetUnfolderBase]: 12/145 cut-off events. [2023-08-24 02:59:08,885 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 02:59:08,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 145 events. 12/145 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 100 event pairs, 0 based on Foata normal form. 0/132 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-08-24 02:59:08,893 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 148 transitions, 320 flow [2023-08-24 02:59:08,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 135 transitions, 288 flow [2023-08-24 02:59:08,905 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 02:59:08,920 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 135 transitions, 288 flow [2023-08-24 02:59:08,924 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 135 transitions, 288 flow [2023-08-24 02:59:08,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 135 transitions, 288 flow [2023-08-24 02:59:08,979 INFO L124 PetriNetUnfolderBase]: 12/135 cut-off events. [2023-08-24 02:59:08,979 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 02:59:08,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 135 events. 12/135 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 101 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 108. Up to 2 conditions per place. [2023-08-24 02:59:08,983 INFO L119 LiptonReduction]: Number of co-enabled transitions 1518 [2023-08-24 02:59:13,180 INFO L134 LiptonReduction]: Checked pairs total: 1676 [2023-08-24 02:59:13,180 INFO L136 LiptonReduction]: Total number of compositions: 132 [2023-08-24 02:59:13,192 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 02:59:13,197 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;@72bf8c73, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 02:59:13,198 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-24 02:59:13,202 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 02:59:13,202 INFO L124 PetriNetUnfolderBase]: 4/23 cut-off events. [2023-08-24 02:59:13,202 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-24 02:59:13,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:59:13,203 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] [2023-08-24 02:59:13,203 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 02:59:13,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:59:13,207 INFO L85 PathProgramCache]: Analyzing trace with hash 1009444864, now seen corresponding path program 1 times [2023-08-24 02:59:13,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:59:13,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881635720] [2023-08-24 02:59:13,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:59:13,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:59:13,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:59:13,876 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 02:59:13,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:59:13,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881635720] [2023-08-24 02:59:13,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881635720] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 02:59:13,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 02:59:13,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 02:59:13,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646394411] [2023-08-24 02:59:13,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 02:59:13,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 02:59:13,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:59:13,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 02:59:13,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 02:59:13,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 280 [2023-08-24 02:59:13,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 24 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 119.25) internal successors, (477), 4 states have internal predecessors, (477), 0 states have call successors, (0), 0 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 02:59:13,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:59:13,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 280 [2023-08-24 02:59:13,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:59:14,100 INFO L124 PetriNetUnfolderBase]: 441/639 cut-off events. [2023-08-24 02:59:14,101 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2023-08-24 02:59:14,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1344 conditions, 639 events. 441/639 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2251 event pairs, 76 based on Foata normal form. 2/394 useless extension candidates. Maximal degree in co-relation 803. Up to 465 conditions per place. [2023-08-24 02:59:14,111 INFO L140 encePairwiseOnDemand]: 274/280 looper letters, 46 selfloop transitions, 8 changer transitions 2/59 dead transitions. [2023-08-24 02:59:14,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 59 transitions, 281 flow [2023-08-24 02:59:14,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 02:59:14,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 02:59:14,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 518 transitions. [2023-08-24 02:59:14,132 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4625 [2023-08-24 02:59:14,133 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 518 transitions. [2023-08-24 02:59:14,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 518 transitions. [2023-08-24 02:59:14,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:59:14,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 518 transitions. [2023-08-24 02:59:14,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 0 states have call successors, (0), 0 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 02:59:14,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 280.0) internal successors, (1400), 5 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:59:14,147 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 280.0) internal successors, (1400), 5 states have internal predecessors, (1400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:59:14,149 INFO L175 Difference]: Start difference. First operand has 30 places, 24 transitions, 66 flow. Second operand 4 states and 518 transitions. [2023-08-24 02:59:14,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 59 transitions, 281 flow [2023-08-24 02:59:14,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 59 transitions, 247 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-24 02:59:14,156 INFO L231 Difference]: Finished difference. Result has 29 places, 31 transitions, 105 flow [2023-08-24 02:59:14,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=105, PETRI_PLACES=29, PETRI_TRANSITIONS=31} [2023-08-24 02:59:14,161 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2023-08-24 02:59:14,162 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 31 transitions, 105 flow [2023-08-24 02:59:14,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.25) internal successors, (477), 4 states have internal predecessors, (477), 0 states have call successors, (0), 0 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 02:59:14,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:59:14,163 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 02:59:14,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 02:59:14,163 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 02:59:14,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:59:14,164 INFO L85 PathProgramCache]: Analyzing trace with hash -802388598, now seen corresponding path program 1 times [2023-08-24 02:59:14,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:59:14,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182383442] [2023-08-24 02:59:14,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:59:14,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:59:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:59:14,323 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 02:59:14,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:59:14,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182383442] [2023-08-24 02:59:14,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182383442] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 02:59:14,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 02:59:14,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 02:59:14,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685326109] [2023-08-24 02:59:14,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 02:59:14,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 02:59:14,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:59:14,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 02:59:14,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 02:59:14,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 280 [2023-08-24 02:59:14,330 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 31 transitions, 105 flow. Second operand has 5 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 0 states have call successors, (0), 0 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 02:59:14,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:59:14,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 280 [2023-08-24 02:59:14,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:59:14,433 INFO L124 PetriNetUnfolderBase]: 336/500 cut-off events. [2023-08-24 02:59:14,434 INFO L125 PetriNetUnfolderBase]: For 147/150 co-relation queries the response was YES. [2023-08-24 02:59:14,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1239 conditions, 500 events. 336/500 cut-off events. For 147/150 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1748 event pairs, 170 based on Foata normal form. 1/470 useless extension candidates. Maximal degree in co-relation 1220. Up to 484 conditions per place. [2023-08-24 02:59:14,437 INFO L140 encePairwiseOnDemand]: 277/280 looper letters, 24 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-08-24 02:59:14,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 142 flow [2023-08-24 02:59:14,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 02:59:14,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 02:59:14,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2023-08-24 02:59:14,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40714285714285714 [2023-08-24 02:59:14,439 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2023-08-24 02:59:14,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2023-08-24 02:59:14,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:59:14,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2023-08-24 02:59:14,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 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 02:59:14,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 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 02:59:14,444 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 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 02:59:14,444 INFO L175 Difference]: Start difference. First operand has 29 places, 31 transitions, 105 flow. Second operand 3 states and 342 transitions. [2023-08-24 02:59:14,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 142 flow [2023-08-24 02:59:14,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 138 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-24 02:59:14,447 INFO L231 Difference]: Finished difference. Result has 32 places, 28 transitions, 94 flow [2023-08-24 02:59:14,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=32, PETRI_TRANSITIONS=28} [2023-08-24 02:59:14,449 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2023-08-24 02:59:14,449 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 28 transitions, 94 flow [2023-08-24 02:59:14,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 0 states have call successors, (0), 0 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 02:59:14,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:59:14,450 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 02:59:14,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 02:59:14,451 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 02:59:14,451 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:59:14,451 INFO L85 PathProgramCache]: Analyzing trace with hash 283968075, now seen corresponding path program 1 times [2023-08-24 02:59:14,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:59:14,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513261800] [2023-08-24 02:59:14,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:59:14,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:59:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:59:14,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 02:59:14,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:59:14,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513261800] [2023-08-24 02:59:14,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513261800] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 02:59:14,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790283418] [2023-08-24 02:59:14,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:59:14,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:59:14,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 02:59:14,597 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 02:59:14,626 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 02:59:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:59:14,698 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 02:59:14,703 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 02:59:14,803 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 02:59:14,803 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 02:59:14,861 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 02:59:14,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790283418] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 02:59:14,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 02:59:14,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2023-08-24 02:59:14,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300497851] [2023-08-24 02:59:14,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 02:59:14,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-24 02:59:14,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:59:14,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-24 02:59:14,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2023-08-24 02:59:14,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 280 [2023-08-24 02:59:14,865 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 28 transitions, 94 flow. Second operand has 7 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 0 states have call successors, (0), 0 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 02:59:14,865 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:59:14,865 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 280 [2023-08-24 02:59:14,865 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:59:15,017 INFO L124 PetriNetUnfolderBase]: 404/586 cut-off events. [2023-08-24 02:59:15,017 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2023-08-24 02:59:15,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1461 conditions, 586 events. 404/586 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2019 event pairs, 94 based on Foata normal form. 44/628 useless extension candidates. Maximal degree in co-relation 1445. Up to 261 conditions per place. [2023-08-24 02:59:15,021 INFO L140 encePairwiseOnDemand]: 272/280 looper letters, 46 selfloop transitions, 13 changer transitions 0/60 dead transitions. [2023-08-24 02:59:15,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 60 transitions, 310 flow [2023-08-24 02:59:15,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 02:59:15,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 02:59:15,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 837 transitions. [2023-08-24 02:59:15,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736607142857143 [2023-08-24 02:59:15,025 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 837 transitions. [2023-08-24 02:59:15,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 837 transitions. [2023-08-24 02:59:15,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:59:15,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 837 transitions. [2023-08-24 02:59:15,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 104.625) internal successors, (837), 8 states have internal predecessors, (837), 0 states have call successors, (0), 0 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 02:59:15,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 280.0) internal successors, (2520), 9 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 02:59:15,032 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 280.0) internal successors, (2520), 9 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 02:59:15,032 INFO L175 Difference]: Start difference. First operand has 32 places, 28 transitions, 94 flow. Second operand 8 states and 837 transitions. [2023-08-24 02:59:15,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 60 transitions, 310 flow [2023-08-24 02:59:15,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 60 transitions, 295 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-24 02:59:15,035 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 146 flow [2023-08-24 02:59:15,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=146, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2023-08-24 02:59:15,035 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 8 predicate places. [2023-08-24 02:59:15,035 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 146 flow [2023-08-24 02:59:15,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 101.0) internal successors, (707), 7 states have internal predecessors, (707), 0 states have call successors, (0), 0 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 02:59:15,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:59:15,036 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 02:59:15,045 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 02:59:15,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:59:15,242 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 02:59:15,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:59:15,242 INFO L85 PathProgramCache]: Analyzing trace with hash 782105989, now seen corresponding path program 1 times [2023-08-24 02:59:15,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:59:15,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10681754] [2023-08-24 02:59:15,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:59:15,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:59:15,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:59:15,357 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 02:59:15,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:59:15,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10681754] [2023-08-24 02:59:15,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10681754] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 02:59:15,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678767185] [2023-08-24 02:59:15,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:59:15,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:59:15,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 02:59:15,359 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 02:59:15,398 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 02:59:15,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:59:15,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-24 02:59:15,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 02:59:15,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 02:59:15,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 02:59:15,539 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 02:59:15,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678767185] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 02:59:15,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 02:59:15,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-08-24 02:59:15,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133189451] [2023-08-24 02:59:15,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 02:59:15,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 02:59:15,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:59:15,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 02:59:15,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-24 02:59:15,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 280 [2023-08-24 02:59:15,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 146 flow. Second operand has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 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 02:59:15,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:59:15,544 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 280 [2023-08-24 02:59:15,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:59:15,648 INFO L124 PetriNetUnfolderBase]: 341/506 cut-off events. [2023-08-24 02:59:15,649 INFO L125 PetriNetUnfolderBase]: For 575/634 co-relation queries the response was YES. [2023-08-24 02:59:15,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1580 conditions, 506 events. 341/506 cut-off events. For 575/634 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1699 event pairs, 85 based on Foata normal form. 67/561 useless extension candidates. Maximal degree in co-relation 1560. Up to 380 conditions per place. [2023-08-24 02:59:15,653 INFO L140 encePairwiseOnDemand]: 275/280 looper letters, 41 selfloop transitions, 5 changer transitions 0/50 dead transitions. [2023-08-24 02:59:15,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 314 flow [2023-08-24 02:59:15,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 02:59:15,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 02:59:15,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 564 transitions. [2023-08-24 02:59:15,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40285714285714286 [2023-08-24 02:59:15,656 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 564 transitions. [2023-08-24 02:59:15,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 564 transitions. [2023-08-24 02:59:15,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:59:15,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 564 transitions. [2023-08-24 02:59:15,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 0 states have call successors, (0), 0 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 02:59:15,660 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 02:59:15,661 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 280.0) internal successors, (1680), 6 states have internal predecessors, (1680), 0 states have call successors, (0), 0 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 02:59:15,662 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 146 flow. Second operand 5 states and 564 transitions. [2023-08-24 02:59:15,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 314 flow [2023-08-24 02:59:15,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 50 transitions, 291 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-08-24 02:59:15,667 INFO L231 Difference]: Finished difference. Result has 40 places, 35 transitions, 152 flow [2023-08-24 02:59:15,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=40, PETRI_TRANSITIONS=35} [2023-08-24 02:59:15,671 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2023-08-24 02:59:15,675 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 35 transitions, 152 flow [2023-08-24 02:59:15,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 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 02:59:15,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:59:15,676 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] [2023-08-24 02:59:15,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-24 02:59:15,880 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,SelfDestructingSolverStorable3 [2023-08-24 02:59:15,880 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 02:59:15,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:59:15,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1804398087, now seen corresponding path program 1 times [2023-08-24 02:59:15,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:59:15,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027953525] [2023-08-24 02:59:15,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:59:15,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:59:15,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:59:16,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:59:16,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:59:16,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027953525] [2023-08-24 02:59:16,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027953525] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 02:59:16,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420838294] [2023-08-24 02:59:16,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:59:16,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:59:16,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 02:59:16,745 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 02:59:16,776 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 02:59:16,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:59:16,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 37 conjunts are in the unsatisfiable core [2023-08-24 02:59:16,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 02:59:17,163 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 02:59:17,170 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-08-24 02:59:17,312 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 02:59:17,314 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:59:17,314 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 37 [2023-08-24 02:59:17,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:59:17,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 02:59:17,549 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset (* 4 c_~M~0)))) (and (forall ((v_ArrVal_173 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_173) c_~A~0.base) .cse1))) (or (<= c_~min2~0 .cse0) (= c_~min1~0 .cse0)))) (or (= c_~min2~0 c_~min1~0) (forall ((v_ArrVal_173 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_173) c_~A~0.base) .cse1) c_~min2~0))))) is different from false [2023-08-24 02:59:17,602 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:59:17,602 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 139 treesize of output 99 [2023-08-24 02:59:17,617 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 57 [2023-08-24 02:59:17,623 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 51 [2023-08-24 02:59:17,940 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:59:17,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420838294] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 02:59:17,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 02:59:17,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 26 [2023-08-24 02:59:17,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470977395] [2023-08-24 02:59:17,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 02:59:17,942 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-08-24 02:59:17,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:59:17,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-08-24 02:59:17,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=588, Unknown=1, NotChecked=50, Total=756 [2023-08-24 02:59:17,946 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 280 [2023-08-24 02:59:17,948 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 35 transitions, 152 flow. Second operand has 28 states, 28 states have (on average 77.25) internal successors, (2163), 28 states have internal predecessors, (2163), 0 states have call successors, (0), 0 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 02:59:17,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:59:17,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 280 [2023-08-24 02:59:17,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:59:19,305 INFO L124 PetriNetUnfolderBase]: 843/1254 cut-off events. [2023-08-24 02:59:19,305 INFO L125 PetriNetUnfolderBase]: For 1170/1170 co-relation queries the response was YES. [2023-08-24 02:59:19,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4122 conditions, 1254 events. 843/1254 cut-off events. For 1170/1170 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4705 event pairs, 48 based on Foata normal form. 8/1262 useless extension candidates. Maximal degree in co-relation 3209. Up to 695 conditions per place. [2023-08-24 02:59:19,314 INFO L140 encePairwiseOnDemand]: 267/280 looper letters, 132 selfloop transitions, 59 changer transitions 7/198 dead transitions. [2023-08-24 02:59:19,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 198 transitions, 1182 flow [2023-08-24 02:59:19,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-24 02:59:19,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-24 02:59:19,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1597 transitions. [2023-08-24 02:59:19,320 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.300187969924812 [2023-08-24 02:59:19,320 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1597 transitions. [2023-08-24 02:59:19,320 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1597 transitions. [2023-08-24 02:59:19,321 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:59:19,321 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1597 transitions. [2023-08-24 02:59:19,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 84.05263157894737) internal successors, (1597), 19 states have internal predecessors, (1597), 0 states have call successors, (0), 0 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 02:59:19,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 280.0) internal successors, (5600), 20 states have internal predecessors, (5600), 0 states have call successors, (0), 0 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 02:59:19,332 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 280.0) internal successors, (5600), 20 states have internal predecessors, (5600), 0 states have call successors, (0), 0 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 02:59:19,332 INFO L175 Difference]: Start difference. First operand has 40 places, 35 transitions, 152 flow. Second operand 19 states and 1597 transitions. [2023-08-24 02:59:19,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 198 transitions, 1182 flow [2023-08-24 02:59:19,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 198 transitions, 1157 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-08-24 02:59:19,341 INFO L231 Difference]: Finished difference. Result has 65 places, 87 transitions, 615 flow [2023-08-24 02:59:19,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=615, PETRI_PLACES=65, PETRI_TRANSITIONS=87} [2023-08-24 02:59:19,342 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2023-08-24 02:59:19,342 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 87 transitions, 615 flow [2023-08-24 02:59:19,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 77.25) internal successors, (2163), 28 states have internal predecessors, (2163), 0 states have call successors, (0), 0 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 02:59:19,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:59:19,343 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] [2023-08-24 02:59:19,357 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 02:59:19,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:59:19,553 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 02:59:19,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:59:19,553 INFO L85 PathProgramCache]: Analyzing trace with hash 184922273, now seen corresponding path program 2 times [2023-08-24 02:59:19,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:59:19,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543808530] [2023-08-24 02:59:19,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:59:19,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:59:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:59:20,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:59:20,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:59:20,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543808530] [2023-08-24 02:59:20,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543808530] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 02:59:20,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061086217] [2023-08-24 02:59:20,126 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 02:59:20,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:59:20,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 02:59:20,129 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 02:59:20,155 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 02:59:20,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 02:59:20,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 02:59:20,231 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-24 02:59:20,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 02:59:20,570 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:59:20,571 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 42 [2023-08-24 02:59:20,747 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:59:20,747 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 02:59:20,917 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:59:20,918 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 45 [2023-08-24 02:59:21,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:59:21,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061086217] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 02:59:21,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 02:59:21,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 8] total 23 [2023-08-24 02:59:21,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421462317] [2023-08-24 02:59:21,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 02:59:21,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-24 02:59:21,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:59:21,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-24 02:59:21,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=487, Unknown=0, NotChecked=0, Total=600 [2023-08-24 02:59:21,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 280 [2023-08-24 02:59:21,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 87 transitions, 615 flow. Second operand has 25 states, 25 states have (on average 81.64) internal successors, (2041), 25 states have internal predecessors, (2041), 0 states have call successors, (0), 0 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 02:59:21,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:59:21,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 280 [2023-08-24 02:59:21,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:59:22,575 INFO L124 PetriNetUnfolderBase]: 1225/1825 cut-off events. [2023-08-24 02:59:22,575 INFO L125 PetriNetUnfolderBase]: For 4635/4635 co-relation queries the response was YES. [2023-08-24 02:59:22,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7767 conditions, 1825 events. 1225/1825 cut-off events. For 4635/4635 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7367 event pairs, 144 based on Foata normal form. 2/1827 useless extension candidates. Maximal degree in co-relation 7665. Up to 1135 conditions per place. [2023-08-24 02:59:22,591 INFO L140 encePairwiseOnDemand]: 266/280 looper letters, 139 selfloop transitions, 103 changer transitions 9/251 dead transitions. [2023-08-24 02:59:22,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 251 transitions, 1990 flow [2023-08-24 02:59:22,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-08-24 02:59:22,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2023-08-24 02:59:22,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2162 transitions. [2023-08-24 02:59:22,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30885714285714283 [2023-08-24 02:59:22,599 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2162 transitions. [2023-08-24 02:59:22,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2162 transitions. [2023-08-24 02:59:22,601 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:59:22,601 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2162 transitions. [2023-08-24 02:59:22,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 86.48) internal successors, (2162), 25 states have internal predecessors, (2162), 0 states have call successors, (0), 0 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 02:59:22,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 280.0) internal successors, (7280), 26 states have internal predecessors, (7280), 0 states have call successors, (0), 0 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 02:59:22,615 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 280.0) internal successors, (7280), 26 states have internal predecessors, (7280), 0 states have call successors, (0), 0 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 02:59:22,615 INFO L175 Difference]: Start difference. First operand has 65 places, 87 transitions, 615 flow. Second operand 25 states and 2162 transitions. [2023-08-24 02:59:22,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 251 transitions, 1990 flow [2023-08-24 02:59:22,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 251 transitions, 1868 flow, removed 39 selfloop flow, removed 3 redundant places. [2023-08-24 02:59:22,638 INFO L231 Difference]: Finished difference. Result has 99 places, 153 transitions, 1386 flow [2023-08-24 02:59:22,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=536, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=1386, PETRI_PLACES=99, PETRI_TRANSITIONS=153} [2023-08-24 02:59:22,639 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 69 predicate places. [2023-08-24 02:59:22,639 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 153 transitions, 1386 flow [2023-08-24 02:59:22,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 81.64) internal successors, (2041), 25 states have internal predecessors, (2041), 0 states have call successors, (0), 0 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 02:59:22,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:59:22,640 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] [2023-08-24 02:59:22,648 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 02:59:22,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:59:22,848 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 02:59:22,848 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:59:22,848 INFO L85 PathProgramCache]: Analyzing trace with hash 583003933, now seen corresponding path program 3 times [2023-08-24 02:59:22,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:59:22,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500880172] [2023-08-24 02:59:22,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:59:22,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:59:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:59:23,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:59:23,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:59:23,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500880172] [2023-08-24 02:59:23,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500880172] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 02:59:23,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512644157] [2023-08-24 02:59:23,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 02:59:23,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:59:23,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 02:59:23,696 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 02:59:23,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 02:59:23,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-24 02:59:23,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 02:59:23,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 34 conjunts are in the unsatisfiable core [2023-08-24 02:59:23,820 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 02:59:24,235 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:59:24,235 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 71 [2023-08-24 02:59:24,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:59:24,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 02:59:24,694 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:59:24,694 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 45 [2023-08-24 02:59:24,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:59:24,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [512644157] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 02:59:24,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 02:59:24,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 10] total 30 [2023-08-24 02:59:24,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163762016] [2023-08-24 02:59:24,968 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 02:59:24,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-24 02:59:24,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:59:24,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-24 02:59:24,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=829, Unknown=0, NotChecked=0, Total=992 [2023-08-24 02:59:24,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 280 [2023-08-24 02:59:24,975 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 153 transitions, 1386 flow. Second operand has 32 states, 32 states have (on average 70.90625) internal successors, (2269), 32 states have internal predecessors, (2269), 0 states have call successors, (0), 0 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 02:59:24,975 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:59:24,975 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 280 [2023-08-24 02:59:24,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:59:27,943 INFO L124 PetriNetUnfolderBase]: 1744/2595 cut-off events. [2023-08-24 02:59:27,944 INFO L125 PetriNetUnfolderBase]: For 13858/13858 co-relation queries the response was YES. [2023-08-24 02:59:27,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13410 conditions, 2595 events. 1744/2595 cut-off events. For 13858/13858 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 11305 event pairs, 272 based on Foata normal form. 3/2598 useless extension candidates. Maximal degree in co-relation 13366. Up to 1812 conditions per place. [2023-08-24 02:59:27,970 INFO L140 encePairwiseOnDemand]: 267/280 looper letters, 181 selfloop transitions, 174 changer transitions 12/367 dead transitions. [2023-08-24 02:59:27,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 367 transitions, 3561 flow [2023-08-24 02:59:27,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-08-24 02:59:27,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-08-24 02:59:27,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 3097 transitions. [2023-08-24 02:59:27,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2697735191637631 [2023-08-24 02:59:27,980 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 3097 transitions. [2023-08-24 02:59:27,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 3097 transitions. [2023-08-24 02:59:27,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:59:27,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 3097 transitions. [2023-08-24 02:59:27,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 75.53658536585365) internal successors, (3097), 41 states have internal predecessors, (3097), 0 states have call successors, (0), 0 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 02:59:28,002 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 280.0) internal successors, (11760), 42 states have internal predecessors, (11760), 0 states have call successors, (0), 0 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 02:59:28,005 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 280.0) internal successors, (11760), 42 states have internal predecessors, (11760), 0 states have call successors, (0), 0 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 02:59:28,006 INFO L175 Difference]: Start difference. First operand has 99 places, 153 transitions, 1386 flow. Second operand 41 states and 3097 transitions. [2023-08-24 02:59:28,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 367 transitions, 3561 flow [2023-08-24 02:59:28,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 367 transitions, 3403 flow, removed 71 selfloop flow, removed 4 redundant places. [2023-08-24 02:59:28,052 INFO L231 Difference]: Finished difference. Result has 152 places, 249 transitions, 2674 flow [2023-08-24 02:59:28,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=1262, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=2674, PETRI_PLACES=152, PETRI_TRANSITIONS=249} [2023-08-24 02:59:28,054 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2023-08-24 02:59:28,054 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 249 transitions, 2674 flow [2023-08-24 02:59:28,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 70.90625) internal successors, (2269), 32 states have internal predecessors, (2269), 0 states have call successors, (0), 0 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 02:59:28,055 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:59:28,055 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] [2023-08-24 02:59:28,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-24 02:59:28,260 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:59:28,261 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 02:59:28,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:59:28,261 INFO L85 PathProgramCache]: Analyzing trace with hash 870606891, now seen corresponding path program 4 times [2023-08-24 02:59:28,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:59:28,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380128141] [2023-08-24 02:59:28,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:59:28,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:59:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:59:28,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:59:28,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:59:28,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380128141] [2023-08-24 02:59:28,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380128141] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 02:59:28,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892901518] [2023-08-24 02:59:28,879 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 02:59:28,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:59:28,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 02:59:28,881 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 02:59:28,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 02:59:28,976 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 02:59:28,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 02:59:28,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-24 02:59:28,980 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 02:59:29,371 INFO L322 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-08-24 02:59:29,372 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 63 [2023-08-24 02:59:29,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 02:59:29,510 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 02:59:29,627 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:59:29,627 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 45 [2023-08-24 02:59:29,801 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 02:59:29,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892901518] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 02:59:29,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 02:59:29,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 25 [2023-08-24 02:59:29,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577696642] [2023-08-24 02:59:29,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 02:59:29,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-24 02:59:29,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:59:29,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-24 02:59:29,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2023-08-24 02:59:29,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 280 [2023-08-24 02:59:29,807 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 249 transitions, 2674 flow. Second operand has 27 states, 27 states have (on average 81.29629629629629) internal successors, (2195), 27 states have internal predecessors, (2195), 0 states have call successors, (0), 0 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 02:59:29,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:59:29,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 280 [2023-08-24 02:59:29,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:59:31,452 INFO L124 PetriNetUnfolderBase]: 1920/2873 cut-off events. [2023-08-24 02:59:31,452 INFO L125 PetriNetUnfolderBase]: For 22764/22764 co-relation queries the response was YES. [2023-08-24 02:59:31,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17304 conditions, 2873 events. 1920/2873 cut-off events. For 22764/22764 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 12882 event pairs, 351 based on Foata normal form. 3/2876 useless extension candidates. Maximal degree in co-relation 17242. Up to 2438 conditions per place. [2023-08-24 02:59:31,486 INFO L140 encePairwiseOnDemand]: 267/280 looper letters, 216 selfloop transitions, 154 changer transitions 13/383 dead transitions. [2023-08-24 02:59:31,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 383 transitions, 4597 flow [2023-08-24 02:59:31,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-24 02:59:31,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-24 02:59:31,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1780 transitions. [2023-08-24 02:59:31,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30272108843537415 [2023-08-24 02:59:31,494 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1780 transitions. [2023-08-24 02:59:31,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1780 transitions. [2023-08-24 02:59:31,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:59:31,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1780 transitions. [2023-08-24 02:59:31,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 84.76190476190476) internal successors, (1780), 21 states have internal predecessors, (1780), 0 states have call successors, (0), 0 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 02:59:31,504 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 280.0) internal successors, (6160), 22 states have internal predecessors, (6160), 0 states have call successors, (0), 0 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 02:59:31,506 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 280.0) internal successors, (6160), 22 states have internal predecessors, (6160), 0 states have call successors, (0), 0 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 02:59:31,506 INFO L175 Difference]: Start difference. First operand has 152 places, 249 transitions, 2674 flow. Second operand 21 states and 1780 transitions. [2023-08-24 02:59:31,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 383 transitions, 4597 flow [2023-08-24 02:59:31,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 383 transitions, 3933 flow, removed 230 selfloop flow, removed 17 redundant places. [2023-08-24 02:59:31,595 INFO L231 Difference]: Finished difference. Result has 167 places, 328 transitions, 3462 flow [2023-08-24 02:59:31,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=2158, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3462, PETRI_PLACES=167, PETRI_TRANSITIONS=328} [2023-08-24 02:59:31,598 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 137 predicate places. [2023-08-24 02:59:31,598 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 328 transitions, 3462 flow [2023-08-24 02:59:31,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 81.29629629629629) internal successors, (2195), 27 states have internal predecessors, (2195), 0 states have call successors, (0), 0 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 02:59:31,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:59:31,599 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] [2023-08-24 02:59:31,607 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-24 02:59:31,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:59:31,807 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 02:59:31,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:59:31,807 INFO L85 PathProgramCache]: Analyzing trace with hash 735028581, now seen corresponding path program 5 times [2023-08-24 02:59:31,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:59:31,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158293809] [2023-08-24 02:59:31,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:59:31,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:59:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:59:32,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:59:32,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:59:32,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158293809] [2023-08-24 02:59:32,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158293809] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 02:59:32,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1667130012] [2023-08-24 02:59:32,395 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 02:59:32,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:59:32,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 02:59:32,397 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 02:59:32,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 02:59:32,497 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 02:59:32,497 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 02:59:32,499 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 33 conjunts are in the unsatisfiable core [2023-08-24 02:59:32,503 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 02:59:32,811 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2023-08-24 02:59:32,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:59:32,864 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 02:59:32,955 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:59:32,955 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 85 treesize of output 45 [2023-08-24 02:59:33,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:59:33,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1667130012] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 02:59:33,149 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 02:59:33,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 8] total 23 [2023-08-24 02:59:33,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432981729] [2023-08-24 02:59:33,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 02:59:33,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-24 02:59:33,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:59:33,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-24 02:59:33,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2023-08-24 02:59:33,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 280 [2023-08-24 02:59:33,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 328 transitions, 3462 flow. Second operand has 25 states, 25 states have (on average 81.48) internal successors, (2037), 25 states have internal predecessors, (2037), 0 states have call successors, (0), 0 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 02:59:33,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:59:33,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 280 [2023-08-24 02:59:33,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:59:34,353 INFO L124 PetriNetUnfolderBase]: 1960/2936 cut-off events. [2023-08-24 02:59:34,353 INFO L125 PetriNetUnfolderBase]: For 22619/22619 co-relation queries the response was YES. [2023-08-24 02:59:34,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17657 conditions, 2936 events. 1960/2936 cut-off events. For 22619/22619 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 13286 event pairs, 368 based on Foata normal form. 2/2938 useless extension candidates. Maximal degree in co-relation 17583. Up to 2578 conditions per place. [2023-08-24 02:59:34,391 INFO L140 encePairwiseOnDemand]: 267/280 looper letters, 291 selfloop transitions, 117 changer transitions 3/411 dead transitions. [2023-08-24 02:59:34,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 411 transitions, 4873 flow [2023-08-24 02:59:34,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-24 02:59:34,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-24 02:59:34,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1717 transitions. [2023-08-24 02:59:34,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30660714285714286 [2023-08-24 02:59:34,395 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1717 transitions. [2023-08-24 02:59:34,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1717 transitions. [2023-08-24 02:59:34,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:59:34,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1717 transitions. [2023-08-24 02:59:34,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 85.85) internal successors, (1717), 20 states have internal predecessors, (1717), 0 states have call successors, (0), 0 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 02:59:34,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 280.0) internal successors, (5880), 21 states have internal predecessors, (5880), 0 states have call successors, (0), 0 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 02:59:34,405 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 280.0) internal successors, (5880), 21 states have internal predecessors, (5880), 0 states have call successors, (0), 0 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 02:59:34,405 INFO L175 Difference]: Start difference. First operand has 167 places, 328 transitions, 3462 flow. Second operand 20 states and 1717 transitions. [2023-08-24 02:59:34,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 411 transitions, 4873 flow [2023-08-24 02:59:34,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 411 transitions, 4510 flow, removed 150 selfloop flow, removed 5 redundant places. [2023-08-24 02:59:34,506 INFO L231 Difference]: Finished difference. Result has 187 places, 351 transitions, 3674 flow [2023-08-24 02:59:34,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=3110, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=3674, PETRI_PLACES=187, PETRI_TRANSITIONS=351} [2023-08-24 02:59:34,507 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2023-08-24 02:59:34,507 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 351 transitions, 3674 flow [2023-08-24 02:59:34,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 81.48) internal successors, (2037), 25 states have internal predecessors, (2037), 0 states have call successors, (0), 0 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 02:59:34,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:59:34,508 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] [2023-08-24 02:59:34,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-24 02:59:34,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:59:34,712 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 02:59:34,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:59:34,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1087686693, now seen corresponding path program 6 times [2023-08-24 02:59:34,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:59:34,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486826046] [2023-08-24 02:59:34,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:59:34,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:59:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:59:35,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:59:35,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:59:35,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486826046] [2023-08-24 02:59:35,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486826046] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 02:59:35,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1114909127] [2023-08-24 02:59:35,179 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 02:59:35,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:59:35,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 02:59:35,181 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 02:59:35,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-24 02:59:35,295 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-24 02:59:35,295 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 02:59:35,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-24 02:59:35,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 02:59:35,587 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:59:35,587 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 77 treesize of output 71 [2023-08-24 02:59:35,792 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 02:59:35,792 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 02:59:35,905 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:59:35,905 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 45 [2023-08-24 02:59:36,014 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 02:59:36,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1114909127] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 02:59:36,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 02:59:36,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 24 [2023-08-24 02:59:36,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959745551] [2023-08-24 02:59:36,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 02:59:36,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-24 02:59:36,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:59:36,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-24 02:59:36,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=541, Unknown=0, NotChecked=0, Total=650 [2023-08-24 02:59:36,017 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 280 [2023-08-24 02:59:36,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 351 transitions, 3674 flow. Second operand has 26 states, 26 states have (on average 81.34615384615384) internal successors, (2115), 26 states have internal predecessors, (2115), 0 states have call successors, (0), 0 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 02:59:36,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:59:36,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 280 [2023-08-24 02:59:36,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:59:37,591 INFO L124 PetriNetUnfolderBase]: 2065/3131 cut-off events. [2023-08-24 02:59:37,592 INFO L125 PetriNetUnfolderBase]: For 26291/26291 co-relation queries the response was YES. [2023-08-24 02:59:37,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19278 conditions, 3131 events. 2065/3131 cut-off events. For 26291/26291 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 14704 event pairs, 374 based on Foata normal form. 2/3127 useless extension candidates. Maximal degree in co-relation 19199. Up to 2700 conditions per place. [2023-08-24 02:59:37,626 INFO L140 encePairwiseOnDemand]: 268/280 looper letters, 282 selfloop transitions, 160 changer transitions 13/455 dead transitions. [2023-08-24 02:59:37,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 455 transitions, 5424 flow [2023-08-24 02:59:37,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-24 02:59:37,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-24 02:59:37,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1630 transitions. [2023-08-24 02:59:37,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30639097744360905 [2023-08-24 02:59:37,629 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1630 transitions. [2023-08-24 02:59:37,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1630 transitions. [2023-08-24 02:59:37,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:59:37,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1630 transitions. [2023-08-24 02:59:37,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 85.78947368421052) internal successors, (1630), 19 states have internal predecessors, (1630), 0 states have call successors, (0), 0 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 02:59:37,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 280.0) internal successors, (5600), 20 states have internal predecessors, (5600), 0 states have call successors, (0), 0 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 02:59:37,637 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 280.0) internal successors, (5600), 20 states have internal predecessors, (5600), 0 states have call successors, (0), 0 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 02:59:37,637 INFO L175 Difference]: Start difference. First operand has 187 places, 351 transitions, 3674 flow. Second operand 19 states and 1630 transitions. [2023-08-24 02:59:37,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 455 transitions, 5424 flow [2023-08-24 02:59:37,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 455 transitions, 5206 flow, removed 35 selfloop flow, removed 11 redundant places. [2023-08-24 02:59:37,746 INFO L231 Difference]: Finished difference. Result has 203 places, 393 transitions, 4530 flow [2023-08-24 02:59:37,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=3470, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=351, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4530, PETRI_PLACES=203, PETRI_TRANSITIONS=393} [2023-08-24 02:59:37,747 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2023-08-24 02:59:37,747 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 393 transitions, 4530 flow [2023-08-24 02:59:37,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 81.34615384615384) internal successors, (2115), 26 states have internal predecessors, (2115), 0 states have call successors, (0), 0 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 02:59:37,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:59:37,748 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] [2023-08-24 02:59:37,761 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-24 02:59:37,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-24 02:59:37,953 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 02:59:37,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:59:37,954 INFO L85 PathProgramCache]: Analyzing trace with hash -737468569, now seen corresponding path program 7 times [2023-08-24 02:59:37,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:59:37,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260495726] [2023-08-24 02:59:37,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:59:37,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:59:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:59:38,602 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:59:38,603 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:59:38,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260495726] [2023-08-24 02:59:38,603 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260495726] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 02:59:38,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349772526] [2023-08-24 02:59:38,603 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 02:59:38,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:59:38,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 02:59:38,604 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 02:59:38,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-24 02:59:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:59:38,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 32 conjunts are in the unsatisfiable core [2023-08-24 02:59:38,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 02:59:38,989 INFO L322 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2023-08-24 02:59:38,989 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 73 treesize of output 59 [2023-08-24 02:59:39,073 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:59:39,074 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 02:59:39,157 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:59:39,157 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 45 [2023-08-24 02:59:39,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:59:39,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349772526] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 02:59:39,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 02:59:39,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 23 [2023-08-24 02:59:39,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483031685] [2023-08-24 02:59:39,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 02:59:39,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-24 02:59:39,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:59:39,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-24 02:59:39,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2023-08-24 02:59:39,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 280 [2023-08-24 02:59:39,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 393 transitions, 4530 flow. Second operand has 25 states, 25 states have (on average 75.4) internal successors, (1885), 25 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:59:39,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:59:39,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 280 [2023-08-24 02:59:39,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:59:40,249 INFO L124 PetriNetUnfolderBase]: 2256/3491 cut-off events. [2023-08-24 02:59:40,249 INFO L125 PetriNetUnfolderBase]: For 33330/33363 co-relation queries the response was YES. [2023-08-24 02:59:40,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22505 conditions, 3491 events. 2256/3491 cut-off events. For 33330/33363 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 17919 event pairs, 385 based on Foata normal form. 30/3489 useless extension candidates. Maximal degree in co-relation 22416. Up to 2693 conditions per place. [2023-08-24 02:59:40,287 INFO L140 encePairwiseOnDemand]: 271/280 looper letters, 300 selfloop transitions, 173 changer transitions 1/486 dead transitions. [2023-08-24 02:59:40,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 486 transitions, 6424 flow [2023-08-24 02:59:40,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 02:59:40,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 02:59:40,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1050 transitions. [2023-08-24 02:59:40,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28846153846153844 [2023-08-24 02:59:40,290 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1050 transitions. [2023-08-24 02:59:40,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1050 transitions. [2023-08-24 02:59:40,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:59:40,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1050 transitions. [2023-08-24 02:59:40,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 80.76923076923077) internal successors, (1050), 13 states have internal predecessors, (1050), 0 states have call successors, (0), 0 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 02:59:40,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 280.0) internal successors, (3920), 14 states have internal predecessors, (3920), 0 states have call successors, (0), 0 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 02:59:40,295 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 280.0) internal successors, (3920), 14 states have internal predecessors, (3920), 0 states have call successors, (0), 0 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 02:59:40,295 INFO L175 Difference]: Start difference. First operand has 203 places, 393 transitions, 4530 flow. Second operand 13 states and 1050 transitions. [2023-08-24 02:59:40,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 486 transitions, 6424 flow [2023-08-24 02:59:40,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 486 transitions, 5934 flow, removed 212 selfloop flow, removed 3 redundant places. [2023-08-24 02:59:40,485 INFO L231 Difference]: Finished difference. Result has 216 places, 439 transitions, 5187 flow [2023-08-24 02:59:40,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=4224, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=5187, PETRI_PLACES=216, PETRI_TRANSITIONS=439} [2023-08-24 02:59:40,486 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2023-08-24 02:59:40,486 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 439 transitions, 5187 flow [2023-08-24 02:59:40,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 75.4) internal successors, (1885), 25 states have internal predecessors, (1885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:59:40,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:59:40,487 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] [2023-08-24 02:59:40,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-24 02:59:40,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:59:40,693 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 02:59:40,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:59:40,693 INFO L85 PathProgramCache]: Analyzing trace with hash -650677673, now seen corresponding path program 8 times [2023-08-24 02:59:40,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:59:40,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267960381] [2023-08-24 02:59:40,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:59:40,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:59:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:59:41,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:59:41,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:59:41,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267960381] [2023-08-24 02:59:41,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267960381] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 02:59:41,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1751752362] [2023-08-24 02:59:41,394 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 02:59:41,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:59:41,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 02:59:41,397 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 02:59:41,427 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-24 02:59:41,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 02:59:41,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 02:59:41,513 INFO L262 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-24 02:59:41,517 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 02:59:41,575 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 11 treesize of output 7 [2023-08-24 02:59:41,627 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 02:59:41,798 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 02:59:41,799 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-08-24 02:59:41,886 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 02:59:41,887 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-08-24 02:59:41,978 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:59:41,979 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 43 [2023-08-24 02:59:42,168 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 02:59:42,169 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 02:59:45,725 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((~M~0 Int) (v_ArrVal_485 (Array Int Int)) (v_ArrVal_486 (Array Int Int))) (or (< (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_485) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_486) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))) c_~min2~0) (<= c_~N~0 ~M~0) (< (+ ~M~0 1) c_~N~0)))) (.cse2 (select (select |c_#memory_int| c_~A~0.base) (+ c_~A~0.offset (* c_thread1Thread1of1ForFork2_~i~0 4))))) (and (or (and (or (= c_~min2~0 c_~min1~0) .cse0) (forall ((~M~0 Int) (v_ArrVal_485 (Array Int Int)) (v_ArrVal_486 (Array Int Int))) (let ((.cse1 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_485) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_486) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (<= c_~min2~0 .cse1) (<= c_~N~0 ~M~0) (= c_~min1~0 .cse1) (< (+ ~M~0 1) c_~N~0))))) (< .cse2 c_~min1~0)) (or (and (forall ((~M~0 Int) (v_ArrVal_485 (Array Int Int)) (v_ArrVal_486 (Array Int Int))) (let ((.cse3 (select (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_485) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_486) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))))) (or (<= c_~min2~0 .cse3) (<= c_~N~0 ~M~0) (= .cse2 .cse3) (< (+ ~M~0 1) c_~N~0)))) (or (= c_~min2~0 .cse2) .cse0)) (<= c_~min1~0 .cse2)))) is different from false [2023-08-24 02:59:49,306 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:59:49,307 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 77 treesize of output 53 [2023-08-24 02:59:49,317 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:59:49,317 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 186 treesize of output 178 [2023-08-24 02:59:49,325 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 124 [2023-08-24 02:59:49,333 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 100 [2023-08-24 02:59:49,347 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:59:49,347 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 71 treesize of output 69 [2023-08-24 02:59:49,617 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-24 02:59:49,618 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 1 [2023-08-24 02:59:49,625 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:59:49,625 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 87 treesize of output 63 [2023-08-24 02:59:49,629 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 02:59:49,629 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 02:59:49,636 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-24 02:59:49,636 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 80 treesize of output 64 [2023-08-24 02:59:49,644 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-24 02:59:49,645 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 36 treesize of output 26 [2023-08-24 02:59:49,665 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 02:59:49,665 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 43 [2023-08-24 02:59:49,669 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 02:59:49,670 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 02:59:49,681 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-24 02:59:49,681 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 43 [2023-08-24 02:59:49,693 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-24 02:59:49,693 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 23 treesize of output 19 [2023-08-24 02:59:49,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-24 02:59:49,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1751752362] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 02:59:49,729 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 02:59:49,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 25 [2023-08-24 02:59:49,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351430051] [2023-08-24 02:59:49,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 02:59:49,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-24 02:59:49,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:59:49,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-24 02:59:49,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=520, Unknown=14, NotChecked=48, Total=702 [2023-08-24 02:59:49,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 280 [2023-08-24 02:59:49,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 439 transitions, 5187 flow. Second operand has 27 states, 27 states have (on average 79.11111111111111) internal successors, (2136), 27 states have internal predecessors, (2136), 0 states have call successors, (0), 0 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 02:59:49,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:59:49,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 280 [2023-08-24 02:59:49,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:59:55,406 INFO L124 PetriNetUnfolderBase]: 2405/3725 cut-off events. [2023-08-24 02:59:55,406 INFO L125 PetriNetUnfolderBase]: For 34785/34807 co-relation queries the response was YES. [2023-08-24 02:59:55,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24643 conditions, 3725 events. 2405/3725 cut-off events. For 34785/34807 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 19548 event pairs, 317 based on Foata normal form. 20/3702 useless extension candidates. Maximal degree in co-relation 24549. Up to 2651 conditions per place. [2023-08-24 02:59:55,445 INFO L140 encePairwiseOnDemand]: 270/280 looper letters, 330 selfloop transitions, 158 changer transitions 4/504 dead transitions. [2023-08-24 02:59:55,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 504 transitions, 6665 flow [2023-08-24 02:59:55,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-24 02:59:55,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-24 02:59:55,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 940 transitions. [2023-08-24 02:59:55,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3051948051948052 [2023-08-24 02:59:55,447 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 940 transitions. [2023-08-24 02:59:55,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 940 transitions. [2023-08-24 02:59:55,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:59:55,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 940 transitions. [2023-08-24 02:59:55,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 85.45454545454545) internal successors, (940), 11 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 02:59:55,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 280.0) internal successors, (3360), 12 states have internal predecessors, (3360), 0 states have call successors, (0), 0 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 02:59:55,453 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 280.0) internal successors, (3360), 12 states have internal predecessors, (3360), 0 states have call successors, (0), 0 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 02:59:55,453 INFO L175 Difference]: Start difference. First operand has 216 places, 439 transitions, 5187 flow. Second operand 11 states and 940 transitions. [2023-08-24 02:59:55,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 504 transitions, 6665 flow [2023-08-24 02:59:55,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 504 transitions, 6513 flow, removed 24 selfloop flow, removed 6 redundant places. [2023-08-24 02:59:55,646 INFO L231 Difference]: Finished difference. Result has 225 places, 458 transitions, 5754 flow [2023-08-24 02:59:55,647 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=5036, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=439, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=5754, PETRI_PLACES=225, PETRI_TRANSITIONS=458} [2023-08-24 02:59:55,648 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 195 predicate places. [2023-08-24 02:59:55,648 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 458 transitions, 5754 flow [2023-08-24 02:59:55,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 79.11111111111111) internal successors, (2136), 27 states have internal predecessors, (2136), 0 states have call successors, (0), 0 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 02:59:55,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:59:55,649 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] [2023-08-24 02:59:55,654 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-24 02:59:55,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-24 02:59:55,854 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 02:59:55,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:59:55,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1729518910, now seen corresponding path program 9 times [2023-08-24 02:59:55,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:59:55,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119665956] [2023-08-24 02:59:55,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:59:55,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:59:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:59:55,961 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 02:59:55,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:59:55,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119665956] [2023-08-24 02:59:55,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119665956] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 02:59:55,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740615487] [2023-08-24 02:59:55,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 02:59:55,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:59:55,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 02:59:55,962 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 02:59:55,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-24 02:59:56,073 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 02:59:56,073 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 02:59:56,074 INFO L262 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 02:59:56,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 02:59:56,143 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 02:59:56,143 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 02:59:56,202 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 02:59:56,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740615487] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 02:59:56,202 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 02:59:56,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-08-24 02:59:56,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109751000] [2023-08-24 02:59:56,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 02:59:56,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-08-24 02:59:56,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:59:56,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-08-24 02:59:56,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2023-08-24 02:59:56,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 280 [2023-08-24 02:59:56,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 458 transitions, 5754 flow. Second operand has 14 states, 14 states have (on average 108.92857142857143) internal successors, (1525), 14 states have internal predecessors, (1525), 0 states have call successors, (0), 0 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 02:59:56,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:59:56,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 280 [2023-08-24 02:59:56,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:59:57,012 INFO L124 PetriNetUnfolderBase]: 2693/4121 cut-off events. [2023-08-24 02:59:57,013 INFO L125 PetriNetUnfolderBase]: For 53465/53652 co-relation queries the response was YES. [2023-08-24 02:59:57,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29603 conditions, 4121 events. 2693/4121 cut-off events. For 53465/53652 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 22110 event pairs, 805 based on Foata normal form. 130/4112 useless extension candidates. Maximal degree in co-relation 29503. Up to 3052 conditions per place. [2023-08-24 02:59:57,073 INFO L140 encePairwiseOnDemand]: 274/280 looper letters, 461 selfloop transitions, 52 changer transitions 0/546 dead transitions. [2023-08-24 02:59:57,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 546 transitions, 7660 flow [2023-08-24 02:59:57,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 02:59:57,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 02:59:57,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 913 transitions. [2023-08-24 02:59:57,075 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4075892857142857 [2023-08-24 02:59:57,075 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 913 transitions. [2023-08-24 02:59:57,075 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 913 transitions. [2023-08-24 02:59:57,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:59:57,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 913 transitions. [2023-08-24 02:59:57,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 114.125) internal successors, (913), 8 states have internal predecessors, (913), 0 states have call successors, (0), 0 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 02:59:57,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 280.0) internal successors, (2520), 9 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 02:59:57,079 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 280.0) internal successors, (2520), 9 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 02:59:57,079 INFO L175 Difference]: Start difference. First operand has 225 places, 458 transitions, 5754 flow. Second operand 8 states and 913 transitions. [2023-08-24 02:59:57,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 546 transitions, 7660 flow [2023-08-24 02:59:57,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 546 transitions, 7525 flow, removed 59 selfloop flow, removed 5 redundant places. [2023-08-24 02:59:57,287 INFO L231 Difference]: Finished difference. Result has 230 places, 460 transitions, 5889 flow [2023-08-24 02:59:57,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=5578, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=5889, PETRI_PLACES=230, PETRI_TRANSITIONS=460} [2023-08-24 02:59:57,288 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2023-08-24 02:59:57,288 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 460 transitions, 5889 flow [2023-08-24 02:59:57,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 108.92857142857143) internal successors, (1525), 14 states have internal predecessors, (1525), 0 states have call successors, (0), 0 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 02:59:57,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:59:57,289 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] [2023-08-24 02:59:57,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-24 02:59:57,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-24 02:59:57,494 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 02:59:57,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:59:57,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1378138305, now seen corresponding path program 10 times [2023-08-24 02:59:57,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:59:57,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594007198] [2023-08-24 02:59:57,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:59:57,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:59:57,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:59:57,600 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 02:59:57,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:59:57,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594007198] [2023-08-24 02:59:57,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594007198] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 02:59:57,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101428309] [2023-08-24 02:59:57,601 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 02:59:57,601 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:59:57,601 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 02:59:57,605 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 02:59:57,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-24 02:59:57,696 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 02:59:57,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 02:59:57,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 02:59:57,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 02:59:57,807 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 02:59:57,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 02:59:57,902 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 02:59:57,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101428309] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 02:59:57,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 02:59:57,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9, 9] total 19 [2023-08-24 02:59:57,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905516331] [2023-08-24 02:59:57,903 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 02:59:57,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-24 02:59:57,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 02:59:57,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-24 02:59:57,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=287, Unknown=0, NotChecked=0, Total=342 [2023-08-24 02:59:57,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 280 [2023-08-24 02:59:57,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 460 transitions, 5889 flow. Second operand has 19 states, 19 states have (on average 96.6842105263158) internal successors, (1837), 19 states have internal predecessors, (1837), 0 states have call successors, (0), 0 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 02:59:57,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 02:59:57,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 280 [2023-08-24 02:59:57,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 02:59:59,214 INFO L124 PetriNetUnfolderBase]: 3037/4629 cut-off events. [2023-08-24 02:59:59,215 INFO L125 PetriNetUnfolderBase]: For 62353/62353 co-relation queries the response was YES. [2023-08-24 02:59:59,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33202 conditions, 4629 events. 3037/4629 cut-off events. For 62353/62353 co-relation queries the response was YES. Maximal size of possible extension queue 248. Compared 24210 event pairs, 445 based on Foata normal form. 320/4949 useless extension candidates. Maximal degree in co-relation 33101. Up to 1772 conditions per place. [2023-08-24 02:59:59,338 INFO L140 encePairwiseOnDemand]: 268/280 looper letters, 551 selfloop transitions, 198 changer transitions 16/765 dead transitions. [2023-08-24 02:59:59,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 765 transitions, 10725 flow [2023-08-24 02:59:59,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-08-24 02:59:59,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2023-08-24 02:59:59,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3152 transitions. [2023-08-24 02:59:59,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3631336405529954 [2023-08-24 02:59:59,351 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3152 transitions. [2023-08-24 02:59:59,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3152 transitions. [2023-08-24 02:59:59,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 02:59:59,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3152 transitions. [2023-08-24 02:59:59,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 101.6774193548387) internal successors, (3152), 31 states have internal predecessors, (3152), 0 states have call successors, (0), 0 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 02:59:59,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 280.0) internal successors, (8960), 32 states have internal predecessors, (8960), 0 states have call successors, (0), 0 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 02:59:59,367 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 280.0) internal successors, (8960), 32 states have internal predecessors, (8960), 0 states have call successors, (0), 0 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 02:59:59,367 INFO L175 Difference]: Start difference. First operand has 230 places, 460 transitions, 5889 flow. Second operand 31 states and 3152 transitions. [2023-08-24 02:59:59,367 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 765 transitions, 10725 flow [2023-08-24 02:59:59,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 765 transitions, 10653 flow, removed 26 selfloop flow, removed 5 redundant places. [2023-08-24 02:59:59,662 INFO L231 Difference]: Finished difference. Result has 273 places, 508 transitions, 7422 flow [2023-08-24 02:59:59,662 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=5137, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=7422, PETRI_PLACES=273, PETRI_TRANSITIONS=508} [2023-08-24 02:59:59,662 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2023-08-24 02:59:59,663 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 508 transitions, 7422 flow [2023-08-24 02:59:59,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 96.6842105263158) internal successors, (1837), 19 states have internal predecessors, (1837), 0 states have call successors, (0), 0 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 02:59:59,663 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 02:59:59,663 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 02:59:59,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-24 02:59:59,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-24 02:59:59,868 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 02:59:59,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 02:59:59,869 INFO L85 PathProgramCache]: Analyzing trace with hash -608890561, now seen corresponding path program 1 times [2023-08-24 02:59:59,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 02:59:59,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490773797] [2023-08-24 02:59:59,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:59:59,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 02:59:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 02:59:59,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 02:59:59,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 02:59:59,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490773797] [2023-08-24 02:59:59,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490773797] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 02:59:59,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [879299362] [2023-08-24 02:59:59,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 02:59:59,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 02:59:59,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 02:59:59,981 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:00:00,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-24 03:00:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:00:00,089 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 03:00:00,090 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:00:00,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:00:00,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:00:00,230 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:00:00,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [879299362] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:00:00,230 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:00:00,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-24 03:00:00,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784820810] [2023-08-24 03:00:00,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:00:00,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 03:00:00,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:00:00,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 03:00:00,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-08-24 03:00:00,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 280 [2023-08-24 03:00:00,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 508 transitions, 7422 flow. Second operand has 16 states, 16 states have (on average 100.5625) internal successors, (1609), 16 states have internal predecessors, (1609), 0 states have call successors, (0), 0 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 03:00:00,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:00:00,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 280 [2023-08-24 03:00:00,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:00:01,293 INFO L124 PetriNetUnfolderBase]: 2925/4462 cut-off events. [2023-08-24 03:00:01,293 INFO L125 PetriNetUnfolderBase]: For 92386/92394 co-relation queries the response was YES. [2023-08-24 03:00:01,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37193 conditions, 4462 events. 2925/4462 cut-off events. For 92386/92394 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 23319 event pairs, 683 based on Foata normal form. 52/4499 useless extension candidates. Maximal degree in co-relation 37075. Up to 1432 conditions per place. [2023-08-24 03:00:01,333 INFO L140 encePairwiseOnDemand]: 272/280 looper letters, 434 selfloop transitions, 95 changer transitions 53/600 dead transitions. [2023-08-24 03:00:01,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 600 transitions, 9791 flow [2023-08-24 03:00:01,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 03:00:01,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 03:00:01,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1078 transitions. [2023-08-24 03:00:01,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.385 [2023-08-24 03:00:01,335 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1078 transitions. [2023-08-24 03:00:01,335 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1078 transitions. [2023-08-24 03:00:01,335 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:00:01,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1078 transitions. [2023-08-24 03:00:01,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 107.8) internal successors, (1078), 10 states have internal predecessors, (1078), 0 states have call successors, (0), 0 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 03:00:01,338 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 280.0) internal successors, (3080), 11 states have internal predecessors, (3080), 0 states have call successors, (0), 0 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 03:00:01,338 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 280.0) internal successors, (3080), 11 states have internal predecessors, (3080), 0 states have call successors, (0), 0 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 03:00:01,338 INFO L175 Difference]: Start difference. First operand has 273 places, 508 transitions, 7422 flow. Second operand 10 states and 1078 transitions. [2023-08-24 03:00:01,338 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 600 transitions, 9791 flow [2023-08-24 03:00:01,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 600 transitions, 8643 flow, removed 476 selfloop flow, removed 11 redundant places. [2023-08-24 03:00:01,887 INFO L231 Difference]: Finished difference. Result has 275 places, 479 transitions, 6598 flow [2023-08-24 03:00:01,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=6275, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=6598, PETRI_PLACES=275, PETRI_TRANSITIONS=479} [2023-08-24 03:00:01,887 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2023-08-24 03:00:01,888 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 479 transitions, 6598 flow [2023-08-24 03:00:01,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 100.5625) internal successors, (1609), 16 states have internal predecessors, (1609), 0 states have call successors, (0), 0 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 03:00:01,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:00:01,888 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] [2023-08-24 03:00:01,892 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-24 03:00:02,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-24 03:00:02,089 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:00:02,089 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:00:02,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1338086351, now seen corresponding path program 11 times [2023-08-24 03:00:02,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:00:02,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330561229] [2023-08-24 03:00:02,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:00:02,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:00:02,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:00:02,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:00:02,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:00:02,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330561229] [2023-08-24 03:00:02,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330561229] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:00:02,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296146305] [2023-08-24 03:00:02,242 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 03:00:02,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:00:02,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:00:02,243 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:00:02,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-24 03:00:02,344 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 03:00:02,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:00:02,345 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-24 03:00:02,347 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:00:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:00:02,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:00:02,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:00:02,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296146305] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:00:02,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:00:02,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 14 [2023-08-24 03:00:02,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561160297] [2023-08-24 03:00:02,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:00:02,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-24 03:00:02,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:00:02,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-24 03:00:02,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-08-24 03:00:02,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 280 [2023-08-24 03:00:02,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 479 transitions, 6598 flow. Second operand has 15 states, 15 states have (on average 105.4) internal successors, (1581), 15 states have internal predecessors, (1581), 0 states have call successors, (0), 0 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 03:00:02,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:00:02,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 280 [2023-08-24 03:00:02,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:00:03,539 INFO L124 PetriNetUnfolderBase]: 2288/3625 cut-off events. [2023-08-24 03:00:03,539 INFO L125 PetriNetUnfolderBase]: For 65372/65533 co-relation queries the response was YES. [2023-08-24 03:00:03,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27998 conditions, 3625 events. 2288/3625 cut-off events. For 65372/65533 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 20187 event pairs, 460 based on Foata normal form. 273/3847 useless extension candidates. Maximal degree in co-relation 27880. Up to 1370 conditions per place. [2023-08-24 03:00:03,571 INFO L140 encePairwiseOnDemand]: 274/280 looper letters, 349 selfloop transitions, 49 changer transitions 77/508 dead transitions. [2023-08-24 03:00:03,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 275 places, 508 transitions, 7840 flow [2023-08-24 03:00:03,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 03:00:03,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 03:00:03,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 777 transitions. [2023-08-24 03:00:03,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3964285714285714 [2023-08-24 03:00:03,573 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 777 transitions. [2023-08-24 03:00:03,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 777 transitions. [2023-08-24 03:00:03,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:00:03,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 777 transitions. [2023-08-24 03:00:03,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 111.0) internal successors, (777), 7 states have internal predecessors, (777), 0 states have call successors, (0), 0 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 03:00:03,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 280.0) internal successors, (2240), 8 states have internal predecessors, (2240), 0 states have call successors, (0), 0 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 03:00:03,575 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 280.0) internal successors, (2240), 8 states have internal predecessors, (2240), 0 states have call successors, (0), 0 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 03:00:03,575 INFO L175 Difference]: Start difference. First operand has 275 places, 479 transitions, 6598 flow. Second operand 7 states and 777 transitions. [2023-08-24 03:00:03,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 275 places, 508 transitions, 7840 flow [2023-08-24 03:00:03,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 508 transitions, 7603 flow, removed 104 selfloop flow, removed 10 redundant places. [2023-08-24 03:00:03,828 INFO L231 Difference]: Finished difference. Result has 268 places, 390 transitions, 5177 flow [2023-08-24 03:00:03,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=6096, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5177, PETRI_PLACES=268, PETRI_TRANSITIONS=390} [2023-08-24 03:00:03,828 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2023-08-24 03:00:03,828 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 390 transitions, 5177 flow [2023-08-24 03:00:03,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 105.4) internal successors, (1581), 15 states have internal predecessors, (1581), 0 states have call successors, (0), 0 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 03:00:03,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:00:03,829 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 03:00:03,834 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-08-24 03:00:04,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:00:04,034 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:00:04,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:00:04,035 INFO L85 PathProgramCache]: Analyzing trace with hash -1568600927, now seen corresponding path program 2 times [2023-08-24 03:00:04,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:00:04,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860524354] [2023-08-24 03:00:04,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:00:04,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:00:04,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:00:04,133 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:00:04,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:00:04,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860524354] [2023-08-24 03:00:04,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860524354] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:00:04,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012308545] [2023-08-24 03:00:04,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 03:00:04,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:00:04,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:00:04,137 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:00:04,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-24 03:00:04,328 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 03:00:04,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:00:04,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-24 03:00:04,331 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:00:04,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:00:04,392 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:00:04,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:00:04,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012308545] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:00:04,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:00:04,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-08-24 03:00:04,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55213280] [2023-08-24 03:00:04,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:00:04,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 03:00:04,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:00:04,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 03:00:04,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-08-24 03:00:04,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 280 [2023-08-24 03:00:04,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 390 transitions, 5177 flow. Second operand has 16 states, 16 states have (on average 100.3125) internal successors, (1605), 16 states have internal predecessors, (1605), 0 states have call successors, (0), 0 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 03:00:04,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:00:04,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 280 [2023-08-24 03:00:04,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:00:04,945 INFO L124 PetriNetUnfolderBase]: 1469/2384 cut-off events. [2023-08-24 03:00:04,945 INFO L125 PetriNetUnfolderBase]: For 42621/42621 co-relation queries the response was YES. [2023-08-24 03:00:04,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18014 conditions, 2384 events. 1469/2384 cut-off events. For 42621/42621 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 12213 event pairs, 369 based on Foata normal form. 202/2579 useless extension candidates. Maximal degree in co-relation 17912. Up to 1432 conditions per place. [2023-08-24 03:00:04,968 INFO L140 encePairwiseOnDemand]: 273/280 looper letters, 218 selfloop transitions, 3 changer transitions 110/337 dead transitions. [2023-08-24 03:00:04,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 337 transitions, 4832 flow [2023-08-24 03:00:04,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 03:00:04,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 03:00:04,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 847 transitions. [2023-08-24 03:00:04,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.378125 [2023-08-24 03:00:04,969 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 847 transitions. [2023-08-24 03:00:04,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 847 transitions. [2023-08-24 03:00:04,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:00:04,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 847 transitions. [2023-08-24 03:00:04,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 105.875) internal successors, (847), 8 states have internal predecessors, (847), 0 states have call successors, (0), 0 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 03:00:04,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 280.0) internal successors, (2520), 9 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 03:00:04,971 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 280.0) internal successors, (2520), 9 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 03:00:04,971 INFO L175 Difference]: Start difference. First operand has 268 places, 390 transitions, 5177 flow. Second operand 8 states and 847 transitions. [2023-08-24 03:00:04,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 337 transitions, 4832 flow [2023-08-24 03:00:05,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 337 transitions, 4297 flow, removed 115 selfloop flow, removed 34 redundant places. [2023-08-24 03:00:05,124 INFO L231 Difference]: Finished difference. Result has 231 places, 227 transitions, 2338 flow [2023-08-24 03:00:05,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=3365, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2338, PETRI_PLACES=231, PETRI_TRANSITIONS=227} [2023-08-24 03:00:05,125 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 201 predicate places. [2023-08-24 03:00:05,125 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 227 transitions, 2338 flow [2023-08-24 03:00:05,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 100.3125) internal successors, (1605), 16 states have internal predecessors, (1605), 0 states have call successors, (0), 0 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 03:00:05,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:00:05,125 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] [2023-08-24 03:00:05,132 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-24 03:00:05,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-24 03:00:05,326 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:00:05,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:00:05,326 INFO L85 PathProgramCache]: Analyzing trace with hash -904781294, now seen corresponding path program 12 times [2023-08-24 03:00:05,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:00:05,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49472758] [2023-08-24 03:00:05,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:00:05,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:00:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:00:05,450 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:00:05,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:00:05,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49472758] [2023-08-24 03:00:05,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49472758] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:00:05,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283656541] [2023-08-24 03:00:05,450 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 03:00:05,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:00:05,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:00:05,451 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:00:05,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-24 03:00:05,546 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-24 03:00:05,546 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:00:05,547 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 03:00:05,548 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:00:05,643 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:00:05,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:00:05,765 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:00:05,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283656541] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:00:05,765 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:00:05,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-08-24 03:00:05,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834667540] [2023-08-24 03:00:05,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:00:05,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-24 03:00:05,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:00:05,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-24 03:00:05,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2023-08-24 03:00:05,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 280 [2023-08-24 03:00:05,769 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 227 transitions, 2338 flow. Second operand has 20 states, 20 states have (on average 100.05) internal successors, (2001), 20 states have internal predecessors, (2001), 0 states have call successors, (0), 0 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 03:00:05,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:00:05,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 280 [2023-08-24 03:00:05,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:00:06,512 INFO L124 PetriNetUnfolderBase]: 1775/2562 cut-off events. [2023-08-24 03:00:06,512 INFO L125 PetriNetUnfolderBase]: For 54284/54286 co-relation queries the response was YES. [2023-08-24 03:00:06,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21792 conditions, 2562 events. 1775/2562 cut-off events. For 54284/54286 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 10696 event pairs, 170 based on Foata normal form. 15/2568 useless extension candidates. Maximal degree in co-relation 21712. Up to 1081 conditions per place. [2023-08-24 03:00:06,536 INFO L140 encePairwiseOnDemand]: 271/280 looper letters, 345 selfloop transitions, 156 changer transitions 0/507 dead transitions. [2023-08-24 03:00:06,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 507 transitions, 6819 flow [2023-08-24 03:00:06,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-24 03:00:06,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-24 03:00:06,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2010 transitions. [2023-08-24 03:00:06,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37781954887218044 [2023-08-24 03:00:06,539 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2010 transitions. [2023-08-24 03:00:06,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2010 transitions. [2023-08-24 03:00:06,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:00:06,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2010 transitions. [2023-08-24 03:00:06,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 105.78947368421052) internal successors, (2010), 19 states have internal predecessors, (2010), 0 states have call successors, (0), 0 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 03:00:06,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 280.0) internal successors, (5600), 20 states have internal predecessors, (5600), 0 states have call successors, (0), 0 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 03:00:06,546 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 280.0) internal successors, (5600), 20 states have internal predecessors, (5600), 0 states have call successors, (0), 0 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 03:00:06,546 INFO L175 Difference]: Start difference. First operand has 231 places, 227 transitions, 2338 flow. Second operand 19 states and 2010 transitions. [2023-08-24 03:00:06,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 507 transitions, 6819 flow [2023-08-24 03:00:06,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 507 transitions, 5915 flow, removed 366 selfloop flow, removed 27 redundant places. [2023-08-24 03:00:06,708 INFO L231 Difference]: Finished difference. Result has 181 places, 300 transitions, 3543 flow [2023-08-24 03:00:06,709 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=2091, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3543, PETRI_PLACES=181, PETRI_TRANSITIONS=300} [2023-08-24 03:00:06,709 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 151 predicate places. [2023-08-24 03:00:06,709 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 300 transitions, 3543 flow [2023-08-24 03:00:06,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 100.05) internal successors, (2001), 20 states have internal predecessors, (2001), 0 states have call successors, (0), 0 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 03:00:06,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:00:06,710 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] [2023-08-24 03:00:06,716 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-08-24 03:00:06,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-24 03:00:06,910 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-24 03:00:06,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:00:06,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1811187332, now seen corresponding path program 13 times [2023-08-24 03:00:06,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:00:06,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599079737] [2023-08-24 03:00:06,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:00:06,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:00:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:00:07,020 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:00:07,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:00:07,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599079737] [2023-08-24 03:00:07,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599079737] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:00:07,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458718030] [2023-08-24 03:00:07,021 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 03:00:07,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:00:07,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:00:07,025 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:00:07,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-24 03:00:07,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:00:07,146 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 03:00:07,151 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:00:07,281 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:00:07,282 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:00:07,364 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:00:07,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [458718030] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:00:07,364 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:00:07,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2023-08-24 03:00:07,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602265544] [2023-08-24 03:00:07,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:00:07,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-24 03:00:07,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:00:07,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-24 03:00:07,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2023-08-24 03:00:07,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 280 [2023-08-24 03:00:07,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 300 transitions, 3543 flow. Second operand has 18 states, 18 states have (on average 100.38888888888889) internal successors, (1807), 18 states have internal predecessors, (1807), 0 states have call successors, (0), 0 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 03:00:07,368 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:00:07,368 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 280 [2023-08-24 03:00:07,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:00:07,955 INFO L124 PetriNetUnfolderBase]: 2096/3021 cut-off events. [2023-08-24 03:00:07,955 INFO L125 PetriNetUnfolderBase]: For 55483/55483 co-relation queries the response was YES. [2023-08-24 03:00:07,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24854 conditions, 3021 events. 2096/3021 cut-off events. For 55483/55483 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 12910 event pairs, 353 based on Foata normal form. 42/3060 useless extension candidates. Maximal degree in co-relation 24792. Up to 1359 conditions per place. [2023-08-24 03:00:07,983 INFO L140 encePairwiseOnDemand]: 271/280 looper letters, 209 selfloop transitions, 125 changer transitions 0/339 dead transitions. [2023-08-24 03:00:07,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 339 transitions, 4801 flow [2023-08-24 03:00:07,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 03:00:07,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 03:00:07,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1048 transitions. [2023-08-24 03:00:07,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3742857142857143 [2023-08-24 03:00:07,985 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1048 transitions. [2023-08-24 03:00:07,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1048 transitions. [2023-08-24 03:00:07,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:00:07,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1048 transitions. [2023-08-24 03:00:07,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 104.8) internal successors, (1048), 10 states have internal predecessors, (1048), 0 states have call successors, (0), 0 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 03:00:07,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 280.0) internal successors, (3080), 11 states have internal predecessors, (3080), 0 states have call successors, (0), 0 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 03:00:07,988 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 280.0) internal successors, (3080), 11 states have internal predecessors, (3080), 0 states have call successors, (0), 0 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 03:00:07,989 INFO L175 Difference]: Start difference. First operand has 181 places, 300 transitions, 3543 flow. Second operand 10 states and 1048 transitions. [2023-08-24 03:00:07,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 339 transitions, 4801 flow [2023-08-24 03:00:08,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 339 transitions, 4280 flow, removed 194 selfloop flow, removed 11 redundant places. [2023-08-24 03:00:08,216 INFO L231 Difference]: Finished difference. Result has 171 places, 284 transitions, 3574 flow [2023-08-24 03:00:08,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=2929, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=272, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3574, PETRI_PLACES=171, PETRI_TRANSITIONS=284} [2023-08-24 03:00:08,216 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2023-08-24 03:00:08,216 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 284 transitions, 3574 flow [2023-08-24 03:00:08,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 100.38888888888889) internal successors, (1807), 18 states have internal predecessors, (1807), 0 states have call successors, (0), 0 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 03:00:08,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:00:08,217 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] [2023-08-24 03:00:08,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-24 03:00:08,417 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:00:08,418 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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 03:00:08,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:00:08,418 INFO L85 PathProgramCache]: Analyzing trace with hash 1327853226, now seen corresponding path program 14 times [2023-08-24 03:00:08,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:00:08,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732793815] [2023-08-24 03:00:08,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:00:08,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:00:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:00:08,561 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 03:00:08,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:00:08,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732793815] [2023-08-24 03:00:08,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732793815] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:00:08,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343858876] [2023-08-24 03:00:08,562 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 03:00:08,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:00:08,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:00:08,565 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:00:08,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-24 03:00:08,670 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 03:00:08,671 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:00:08,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 03:00:08,673 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:00:08,786 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 03:00:08,786 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:00:08,899 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 03:00:08,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343858876] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:00:08,899 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:00:08,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 21 [2023-08-24 03:00:08,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854504685] [2023-08-24 03:00:08,899 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:00:08,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-24 03:00:08,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:00:08,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-24 03:00:08,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2023-08-24 03:00:08,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 280 [2023-08-24 03:00:08,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 284 transitions, 3574 flow. Second operand has 22 states, 22 states have (on average 100.27272727272727) internal successors, (2206), 22 states have internal predecessors, (2206), 0 states have call successors, (0), 0 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 03:00:08,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:00:08,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 280 [2023-08-24 03:00:08,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:00:09,615 INFO L124 PetriNetUnfolderBase]: 2128/3072 cut-off events. [2023-08-24 03:00:09,616 INFO L125 PetriNetUnfolderBase]: For 35598/35598 co-relation queries the response was YES. [2023-08-24 03:00:09,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22734 conditions, 3072 events. 2128/3072 cut-off events. For 35598/35598 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13377 event pairs, 260 based on Foata normal form. 22/3087 useless extension candidates. Maximal degree in co-relation 22673. Up to 1391 conditions per place. [2023-08-24 03:00:09,640 INFO L140 encePairwiseOnDemand]: 271/280 looper letters, 345 selfloop transitions, 146 changer transitions 0/496 dead transitions. [2023-08-24 03:00:09,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 496 transitions, 7023 flow [2023-08-24 03:00:09,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-24 03:00:09,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-24 03:00:09,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1801 transitions. [2023-08-24 03:00:09,642 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3783613445378151 [2023-08-24 03:00:09,643 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1801 transitions. [2023-08-24 03:00:09,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1801 transitions. [2023-08-24 03:00:09,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:00:09,643 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1801 transitions. [2023-08-24 03:00:09,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 105.94117647058823) internal successors, (1801), 17 states have internal predecessors, (1801), 0 states have call successors, (0), 0 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 03:00:09,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 280.0) internal successors, (5040), 18 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 03:00:09,649 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 280.0) internal successors, (5040), 18 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 03:00:09,649 INFO L175 Difference]: Start difference. First operand has 171 places, 284 transitions, 3574 flow. Second operand 17 states and 1801 transitions. [2023-08-24 03:00:09,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 496 transitions, 7023 flow [2023-08-24 03:00:09,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 496 transitions, 6717 flow, removed 111 selfloop flow, removed 6 redundant places. [2023-08-24 03:00:09,810 INFO L231 Difference]: Finished difference. Result has 182 places, 290 transitions, 3848 flow [2023-08-24 03:00:09,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=3454, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3848, PETRI_PLACES=182, PETRI_TRANSITIONS=290} [2023-08-24 03:00:09,811 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2023-08-24 03:00:09,811 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 290 transitions, 3848 flow [2023-08-24 03:00:09,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 100.27272727272727) internal successors, (2206), 22 states have internal predecessors, (2206), 0 states have call successors, (0), 0 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 03:00:09,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:00:09,812 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] [2023-08-24 03:00:09,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-08-24 03:00:10,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:00:10,012 INFO L420 AbstractCegarLoop]: === Iteration 21 === 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 03:00:10,012 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:00:10,013 INFO L85 PathProgramCache]: Analyzing trace with hash 750743628, now seen corresponding path program 15 times [2023-08-24 03:00:10,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:00:10,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720456174] [2023-08-24 03:00:10,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:00:10,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:00:10,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:00:10,125 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 03:00:10,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:00:10,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720456174] [2023-08-24 03:00:10,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720456174] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:00:10,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994679169] [2023-08-24 03:00:10,125 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 03:00:10,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:00:10,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:00:10,126 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:00:10,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-24 03:00:10,236 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 03:00:10,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:00:10,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 03:00:10,239 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:00:10,340 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 03:00:10,340 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:00:10,420 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 03:00:10,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994679169] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:00:10,420 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:00:10,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2023-08-24 03:00:10,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908980724] [2023-08-24 03:00:10,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:00:10,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-24 03:00:10,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:00:10,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-24 03:00:10,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2023-08-24 03:00:10,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 280 [2023-08-24 03:00:10,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 290 transitions, 3848 flow. Second operand has 19 states, 19 states have (on average 100.26315789473684) internal successors, (1905), 19 states have internal predecessors, (1905), 0 states have call successors, (0), 0 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 03:00:10,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:00:10,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 280 [2023-08-24 03:00:10,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:00:10,997 INFO L124 PetriNetUnfolderBase]: 2134/3082 cut-off events. [2023-08-24 03:00:10,998 INFO L125 PetriNetUnfolderBase]: For 38278/38280 co-relation queries the response was YES. [2023-08-24 03:00:11,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22786 conditions, 3082 events. 2134/3082 cut-off events. For 38278/38280 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 13345 event pairs, 490 based on Foata normal form. 24/3102 useless extension candidates. Maximal degree in co-relation 22725. Up to 2187 conditions per place. [2023-08-24 03:00:11,020 INFO L140 encePairwiseOnDemand]: 271/280 looper letters, 218 selfloop transitions, 126 changer transitions 0/349 dead transitions. [2023-08-24 03:00:11,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 349 transitions, 5217 flow [2023-08-24 03:00:11,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 03:00:11,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 03:00:11,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1042 transitions. [2023-08-24 03:00:11,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37214285714285716 [2023-08-24 03:00:11,022 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1042 transitions. [2023-08-24 03:00:11,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1042 transitions. [2023-08-24 03:00:11,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:00:11,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1042 transitions. [2023-08-24 03:00:11,023 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 104.2) internal successors, (1042), 10 states have internal predecessors, (1042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 03:00:11,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 280.0) internal successors, (3080), 11 states have internal predecessors, (3080), 0 states have call successors, (0), 0 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 03:00:11,025 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 280.0) internal successors, (3080), 11 states have internal predecessors, (3080), 0 states have call successors, (0), 0 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 03:00:11,025 INFO L175 Difference]: Start difference. First operand has 182 places, 290 transitions, 3848 flow. Second operand 10 states and 1042 transitions. [2023-08-24 03:00:11,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 349 transitions, 5217 flow [2023-08-24 03:00:11,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 349 transitions, 4932 flow, removed 0 selfloop flow, removed 14 redundant places. [2023-08-24 03:00:11,142 INFO L231 Difference]: Finished difference. Result has 179 places, 299 transitions, 4153 flow [2023-08-24 03:00:11,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=3539, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4153, PETRI_PLACES=179, PETRI_TRANSITIONS=299} [2023-08-24 03:00:11,143 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2023-08-24 03:00:11,143 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 299 transitions, 4153 flow [2023-08-24 03:00:11,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 100.26315789473684) internal successors, (1905), 19 states have internal predecessors, (1905), 0 states have call successors, (0), 0 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 03:00:11,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:00:11,144 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] [2023-08-24 03:00:11,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-08-24 03:00:11,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:00:11,345 INFO L420 AbstractCegarLoop]: === Iteration 22 === 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 03:00:11,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:00:11,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1939112982, now seen corresponding path program 16 times [2023-08-24 03:00:11,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:00:11,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298866053] [2023-08-24 03:00:11,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:00:11,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:00:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:00:11,460 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:00:11,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:00:11,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298866053] [2023-08-24 03:00:11,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298866053] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:00:11,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015578378] [2023-08-24 03:00:11,460 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 03:00:11,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:00:11,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:00:11,465 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:00:11,474 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-24 03:00:11,596 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 03:00:11,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:00:11,597 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 03:00:11,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:00:11,696 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 03:00:11,696 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:00:11,785 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 03:00:11,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015578378] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:00:11,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:00:11,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 18 [2023-08-24 03:00:11,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990423660] [2023-08-24 03:00:11,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:00:11,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-08-24 03:00:11,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:00:11,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-08-24 03:00:11,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-08-24 03:00:11,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 280 [2023-08-24 03:00:11,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 299 transitions, 4153 flow. Second operand has 18 states, 18 states have (on average 96.5) internal successors, (1737), 18 states have internal predecessors, (1737), 0 states have call successors, (0), 0 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 03:00:11,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:00:11,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 280 [2023-08-24 03:00:11,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:00:12,987 INFO L124 PetriNetUnfolderBase]: 2253/3269 cut-off events. [2023-08-24 03:00:12,988 INFO L125 PetriNetUnfolderBase]: For 42602/42602 co-relation queries the response was YES. [2023-08-24 03:00:13,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24780 conditions, 3269 events. 2253/3269 cut-off events. For 42602/42602 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 14377 event pairs, 271 based on Foata normal form. 14/3283 useless extension candidates. Maximal degree in co-relation 24715. Up to 1461 conditions per place. [2023-08-24 03:00:13,068 INFO L140 encePairwiseOnDemand]: 268/280 looper letters, 271 selfloop transitions, 272 changer transitions 0/543 dead transitions. [2023-08-24 03:00:13,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 543 transitions, 8143 flow [2023-08-24 03:00:13,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-08-24 03:00:13,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-08-24 03:00:13,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3501 transitions. [2023-08-24 03:00:13,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3572448979591837 [2023-08-24 03:00:13,072 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3501 transitions. [2023-08-24 03:00:13,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3501 transitions. [2023-08-24 03:00:13,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:00:13,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3501 transitions. [2023-08-24 03:00:13,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 100.02857142857142) internal successors, (3501), 35 states have internal predecessors, (3501), 0 states have call successors, (0), 0 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 03:00:13,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 280.0) internal successors, (10080), 36 states have internal predecessors, (10080), 0 states have call successors, (0), 0 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 03:00:13,081 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 280.0) internal successors, (10080), 36 states have internal predecessors, (10080), 0 states have call successors, (0), 0 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 03:00:13,081 INFO L175 Difference]: Start difference. First operand has 179 places, 299 transitions, 4153 flow. Second operand 35 states and 3501 transitions. [2023-08-24 03:00:13,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 543 transitions, 8143 flow [2023-08-24 03:00:13,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 543 transitions, 7726 flow, removed 76 selfloop flow, removed 6 redundant places. [2023-08-24 03:00:13,242 INFO L231 Difference]: Finished difference. Result has 219 places, 396 transitions, 6118 flow [2023-08-24 03:00:13,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=3869, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=178, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6118, PETRI_PLACES=219, PETRI_TRANSITIONS=396} [2023-08-24 03:00:13,243 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 189 predicate places. [2023-08-24 03:00:13,243 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 396 transitions, 6118 flow [2023-08-24 03:00:13,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 96.5) internal successors, (1737), 18 states have internal predecessors, (1737), 0 states have call successors, (0), 0 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 03:00:13,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:00:13,243 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] [2023-08-24 03:00:13,250 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-08-24 03:00:13,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-08-24 03:00:13,444 INFO L420 AbstractCegarLoop]: === Iteration 23 === 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 03:00:13,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:00:13,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1950699552, now seen corresponding path program 17 times [2023-08-24 03:00:13,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:00:13,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854659207] [2023-08-24 03:00:13,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:00:13,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:00:13,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:00:13,558 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:00:13,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:00:13,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854659207] [2023-08-24 03:00:13,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854659207] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:00:13,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560786320] [2023-08-24 03:00:13,558 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 03:00:13,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:00:13,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:00:13,561 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:00:13,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-08-24 03:00:13,672 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 03:00:13,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:00:13,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-24 03:00:13,674 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:00:13,766 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 03:00:13,766 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:00:13,855 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 03:00:13,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560786320] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:00:13,856 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:00:13,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 21 [2023-08-24 03:00:13,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935161071] [2023-08-24 03:00:13,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:00:13,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-24 03:00:13,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:00:13,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-24 03:00:13,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2023-08-24 03:00:13,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 280 [2023-08-24 03:00:13,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 396 transitions, 6118 flow. Second operand has 21 states, 21 states have (on average 96.28571428571429) internal successors, (2022), 21 states have internal predecessors, (2022), 0 states have call successors, (0), 0 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 03:00:13,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:00:13,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 280 [2023-08-24 03:00:13,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:00:15,747 INFO L124 PetriNetUnfolderBase]: 3916/5634 cut-off events. [2023-08-24 03:00:15,747 INFO L125 PetriNetUnfolderBase]: For 89833/89833 co-relation queries the response was YES. [2023-08-24 03:00:15,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45700 conditions, 5634 events. 3916/5634 cut-off events. For 89833/89833 co-relation queries the response was YES. Maximal size of possible extension queue 227. Compared 26171 event pairs, 545 based on Foata normal form. 54/5688 useless extension candidates. Maximal degree in co-relation 45623. Up to 2946 conditions per place. [2023-08-24 03:00:15,801 INFO L140 encePairwiseOnDemand]: 268/280 looper letters, 576 selfloop transitions, 372 changer transitions 0/948 dead transitions. [2023-08-24 03:00:15,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 948 transitions, 15798 flow [2023-08-24 03:00:15,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2023-08-24 03:00:15,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2023-08-24 03:00:15,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 4133 transitions. [2023-08-24 03:00:15,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36001742160278744 [2023-08-24 03:00:15,808 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 4133 transitions. [2023-08-24 03:00:15,808 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 4133 transitions. [2023-08-24 03:00:15,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:00:15,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 4133 transitions. [2023-08-24 03:00:15,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 100.8048780487805) internal successors, (4133), 41 states have internal predecessors, (4133), 0 states have call successors, (0), 0 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 03:00:15,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 280.0) internal successors, (11760), 42 states have internal predecessors, (11760), 0 states have call successors, (0), 0 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 03:00:15,821 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 280.0) internal successors, (11760), 42 states have internal predecessors, (11760), 0 states have call successors, (0), 0 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 03:00:15,821 INFO L175 Difference]: Start difference. First operand has 219 places, 396 transitions, 6118 flow. Second operand 41 states and 4133 transitions. [2023-08-24 03:00:15,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 948 transitions, 15798 flow [2023-08-24 03:00:16,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 948 transitions, 14225 flow, removed 519 selfloop flow, removed 8 redundant places. [2023-08-24 03:00:16,463 INFO L231 Difference]: Finished difference. Result has 272 places, 669 transitions, 11019 flow [2023-08-24 03:00:16,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=5241, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=11019, PETRI_PLACES=272, PETRI_TRANSITIONS=669} [2023-08-24 03:00:16,464 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 242 predicate places. [2023-08-24 03:00:16,464 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 669 transitions, 11019 flow [2023-08-24 03:00:16,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 96.28571428571429) internal successors, (2022), 21 states have internal predecessors, (2022), 0 states have call successors, (0), 0 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 03:00:16,464 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:00:16,464 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] [2023-08-24 03:00:16,469 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2023-08-24 03:00:16,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-08-24 03:00:16,669 INFO L420 AbstractCegarLoop]: === Iteration 24 === 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 03:00:16,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:00:16,669 INFO L85 PathProgramCache]: Analyzing trace with hash -834473296, now seen corresponding path program 18 times [2023-08-24 03:00:16,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:00:16,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430677041] [2023-08-24 03:00:16,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:00:16,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:00:16,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:00:16,788 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 03:00:16,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:00:16,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430677041] [2023-08-24 03:00:16,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430677041] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:00:16,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23615176] [2023-08-24 03:00:16,789 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 03:00:16,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:00:16,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:00:16,790 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:00:16,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-08-24 03:00:16,915 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-08-24 03:00:16,915 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:00:16,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 03:00:16,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:00:17,004 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 03:00:17,004 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:00:17,095 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 03:00:17,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23615176] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:00:17,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:00:17,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-08-24 03:00:17,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377225333] [2023-08-24 03:00:17,096 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:00:17,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-24 03:00:17,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:00:17,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-24 03:00:17,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2023-08-24 03:00:17,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 280 [2023-08-24 03:00:17,099 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 669 transitions, 11019 flow. Second operand has 21 states, 21 states have (on average 99.85714285714286) internal successors, (2097), 21 states have internal predecessors, (2097), 0 states have call successors, (0), 0 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 03:00:17,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:00:17,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 280 [2023-08-24 03:00:17,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:00:18,481 INFO L124 PetriNetUnfolderBase]: 3846/5512 cut-off events. [2023-08-24 03:00:18,481 INFO L125 PetriNetUnfolderBase]: For 101014/101016 co-relation queries the response was YES. [2023-08-24 03:00:18,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49210 conditions, 5512 events. 3846/5512 cut-off events. For 101014/101016 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 25432 event pairs, 683 based on Foata normal form. 39/5544 useless extension candidates. Maximal degree in co-relation 49113. Up to 3774 conditions per place. [2023-08-24 03:00:18,540 INFO L140 encePairwiseOnDemand]: 271/280 looper letters, 426 selfloop transitions, 272 changer transitions 0/720 dead transitions. [2023-08-24 03:00:18,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 720 transitions, 13129 flow [2023-08-24 03:00:18,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-24 03:00:18,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-24 03:00:18,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1255 transitions. [2023-08-24 03:00:18,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37351190476190477 [2023-08-24 03:00:18,542 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1255 transitions. [2023-08-24 03:00:18,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1255 transitions. [2023-08-24 03:00:18,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:00:18,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1255 transitions. [2023-08-24 03:00:18,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 104.58333333333333) internal successors, (1255), 12 states have internal predecessors, (1255), 0 states have call successors, (0), 0 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 03:00:18,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 280.0) internal successors, (3640), 13 states have internal predecessors, (3640), 0 states have call successors, (0), 0 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 03:00:18,546 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 280.0) internal successors, (3640), 13 states have internal predecessors, (3640), 0 states have call successors, (0), 0 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 03:00:18,546 INFO L175 Difference]: Start difference. First operand has 272 places, 669 transitions, 11019 flow. Second operand 12 states and 1255 transitions. [2023-08-24 03:00:18,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 720 transitions, 13129 flow [2023-08-24 03:00:19,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 720 transitions, 11864 flow, removed 600 selfloop flow, removed 7 redundant places. [2023-08-24 03:00:19,230 INFO L231 Difference]: Finished difference. Result has 271 places, 656 transitions, 10258 flow [2023-08-24 03:00:19,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=9714, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=656, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=10258, PETRI_PLACES=271, PETRI_TRANSITIONS=656} [2023-08-24 03:00:19,230 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 241 predicate places. [2023-08-24 03:00:19,230 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 656 transitions, 10258 flow [2023-08-24 03:00:19,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 99.85714285714286) internal successors, (2097), 21 states have internal predecessors, (2097), 0 states have call successors, (0), 0 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 03:00:19,231 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:00:19,231 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] [2023-08-24 03:00:19,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2023-08-24 03:00:19,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:00:19,432 INFO L420 AbstractCegarLoop]: === Iteration 25 === 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 03:00:19,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:00:19,432 INFO L85 PathProgramCache]: Analyzing trace with hash 7632594, now seen corresponding path program 19 times [2023-08-24 03:00:19,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:00:19,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402427313] [2023-08-24 03:00:19,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:00:19,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:00:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:00:19,568 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:00:19,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:00:19,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402427313] [2023-08-24 03:00:19,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402427313] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:00:19,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668250226] [2023-08-24 03:00:19,569 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 03:00:19,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:00:19,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:00:19,570 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:00:19,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2023-08-24 03:00:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:00:19,682 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 10 conjunts are in the unsatisfiable core [2023-08-24 03:00:19,684 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:00:19,785 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:00:19,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:00:19,886 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 03:00:19,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668250226] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 03:00:19,887 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 03:00:19,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2023-08-24 03:00:19,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800697177] [2023-08-24 03:00:19,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 03:00:19,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-24 03:00:19,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 03:00:19,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-24 03:00:19,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=298, Unknown=0, NotChecked=0, Total=380 [2023-08-24 03:00:19,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 280 [2023-08-24 03:00:19,891 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 656 transitions, 10258 flow. Second operand has 20 states, 20 states have (on average 100.3) internal successors, (2006), 20 states have internal predecessors, (2006), 0 states have call successors, (0), 0 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 03:00:19,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 03:00:19,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 280 [2023-08-24 03:00:19,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 03:00:21,064 INFO L124 PetriNetUnfolderBase]: 3854/5540 cut-off events. [2023-08-24 03:00:21,065 INFO L125 PetriNetUnfolderBase]: For 81261/81263 co-relation queries the response was YES. [2023-08-24 03:00:21,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46326 conditions, 5540 events. 3854/5540 cut-off events. For 81261/81263 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 25777 event pairs, 478 based on Foata normal form. 39/5572 useless extension candidates. Maximal degree in co-relation 46230. Up to 2493 conditions per place. [2023-08-24 03:00:21,126 INFO L140 encePairwiseOnDemand]: 271/280 looper letters, 499 selfloop transitions, 229 changer transitions 0/750 dead transitions. [2023-08-24 03:00:21,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 750 transitions, 12833 flow [2023-08-24 03:00:21,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 03:00:21,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 03:00:21,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1047 transitions. [2023-08-24 03:00:21,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37392857142857144 [2023-08-24 03:00:21,128 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1047 transitions. [2023-08-24 03:00:21,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1047 transitions. [2023-08-24 03:00:21,128 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 03:00:21,128 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1047 transitions. [2023-08-24 03:00:21,129 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 104.7) internal successors, (1047), 10 states have internal predecessors, (1047), 0 states have call successors, (0), 0 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 03:00:21,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 280.0) internal successors, (3080), 11 states have internal predecessors, (3080), 0 states have call successors, (0), 0 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 03:00:21,130 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 280.0) internal successors, (3080), 11 states have internal predecessors, (3080), 0 states have call successors, (0), 0 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 03:00:21,130 INFO L175 Difference]: Start difference. First operand has 271 places, 656 transitions, 10258 flow. Second operand 10 states and 1047 transitions. [2023-08-24 03:00:21,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 750 transitions, 12833 flow [2023-08-24 03:00:21,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 750 transitions, 12256 flow, removed 0 selfloop flow, removed 13 redundant places. [2023-08-24 03:00:21,862 INFO L231 Difference]: Finished difference. Result has 266 places, 645 transitions, 9903 flow [2023-08-24 03:00:21,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=280, PETRI_DIFFERENCE_MINUEND_FLOW=9445, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=9903, PETRI_PLACES=266, PETRI_TRANSITIONS=645} [2023-08-24 03:00:21,863 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 236 predicate places. [2023-08-24 03:00:21,863 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 645 transitions, 9903 flow [2023-08-24 03:00:21,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 100.3) internal successors, (2006), 20 states have internal predecessors, (2006), 0 states have call successors, (0), 0 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 03:00:21,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 03:00:21,864 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] [2023-08-24 03:00:21,868 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2023-08-24 03:00:22,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:00:22,064 INFO L420 AbstractCegarLoop]: === Iteration 26 === 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 03:00:22,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 03:00:22,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1489547798, now seen corresponding path program 3 times [2023-08-24 03:00:22,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 03:00:22,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736027169] [2023-08-24 03:00:22,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 03:00:22,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 03:00:22,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 03:00:23,397 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:00:23,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 03:00:23,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736027169] [2023-08-24 03:00:23,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736027169] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 03:00:23,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550465559] [2023-08-24 03:00:23,398 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 03:00:23,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 03:00:23,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 03:00:23,399 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 03:00:23,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2023-08-24 03:00:23,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 03:00:23,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 03:00:23,549 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-24 03:00:23,551 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 03:00:23,568 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 03:00:23,570 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 98 treesize of output 94 [2023-08-24 03:00:23,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 03:00:23,823 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-08-24 03:00:23,901 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-08-24 03:00:24,623 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:00:24,624 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 143 treesize of output 89 [2023-08-24 03:00:25,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 03:00:25,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 03:00:26,316 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~A~0.offset (* c_thread1Thread1of1ForFork2_~i~0 4)))) (and (forall ((v_ArrVal_1147 (Array Int Int))) (let ((.cse0 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1147) c_~A~0.base))) (or (< (select .cse0 .cse1) c_~min1~0) (forall ((~M~0 Int)) (let ((.cse2 (select .cse0 (+ c_~A~0.offset (* ~M~0 4))))) (or (= c_~min1~0 .cse2) (<= c_~min2~0 .cse2) (<= c_~N~0 ~M~0) (< (+ ~M~0 1) c_~N~0)))) (< (select .cse0 c_~A~0.offset) c_~min2~0)))) (forall ((v_ArrVal_1147 (Array Int Int))) (let ((.cse5 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1147) c_~A~0.base))) (let ((.cse3 (select .cse5 .cse1)) (.cse4 (select .cse5 c_~A~0.offset))) (or (= .cse3 .cse4) (<= c_~min1~0 .cse3) (<= c_~min2~0 .cse4) (forall ((~M~0 Int)) (or (< (select .cse5 (+ c_~A~0.offset (* ~M~0 4))) .cse4) (<= c_~N~0 ~M~0) (< (+ ~M~0 1) c_~N~0))))))) (forall ((v_ArrVal_1147 (Array Int Int))) (let ((.cse7 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1147) c_~A~0.base))) (let ((.cse6 (select .cse7 c_~A~0.offset))) (or (= c_~min1~0 .cse6) (< (select .cse7 .cse1) c_~min1~0) (<= c_~min2~0 .cse6) (forall ((~M~0 Int)) (or (< (select .cse7 (+ c_~A~0.offset (* ~M~0 4))) .cse6) (<= c_~N~0 ~M~0) (< (+ ~M~0 1) c_~N~0))))))) (forall ((v_ArrVal_1147 (Array Int Int))) (let ((.cse11 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1147) c_~A~0.base))) (let ((.cse9 (select .cse11 c_~A~0.offset)) (.cse8 (select .cse11 .cse1))) (or (<= c_~min1~0 .cse8) (<= c_~min2~0 .cse9) (forall ((~M~0 Int)) (let ((.cse10 (select .cse11 (+ c_~A~0.offset (* ~M~0 4))))) (or (<= .cse9 .cse10) (<= c_~N~0 ~M~0) (= .cse10 .cse8) (< (+ ~M~0 1) c_~N~0)))))))) (forall ((v_ArrVal_1147 (Array Int Int))) (let ((.cse14 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1147) c_~A~0.base))) (let ((.cse12 (select .cse14 .cse1))) (or (<= c_~min1~0 .cse12) (forall ((~M~0 Int)) (let ((.cse13 (select .cse14 (+ c_~A~0.offset (* ~M~0 4))))) (or (<= c_~min2~0 .cse13) (<= c_~N~0 ~M~0) (= .cse13 .cse12) (< (+ ~M~0 1) c_~N~0)))) (< (select .cse14 c_~A~0.offset) c_~min2~0))))) (forall ((v_ArrVal_1147 (Array Int Int))) (let ((.cse15 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1147) c_~A~0.base))) (let ((.cse16 (select .cse15 .cse1))) (or (forall ((~M~0 Int)) (or (<= c_~N~0 ~M~0) (< (select .cse15 (+ c_~A~0.offset (* ~M~0 4))) c_~min2~0) (< (+ ~M~0 1) c_~N~0))) (= c_~min2~0 .cse16) (<= c_~min1~0 .cse16) (< (select .cse15 c_~A~0.offset) c_~min2~0))))) (or (= c_~min2~0 c_~min1~0) (forall ((~M~0 Int) (v_ArrVal_1147 (Array Int Int))) (let ((.cse17 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1147) c_~A~0.base))) (or (< (select .cse17 .cse1) c_~min1~0) (<= c_~N~0 ~M~0) (< (select .cse17 c_~A~0.offset) c_~min2~0) (< (select .cse17 (+ c_~A~0.offset (* ~M~0 4))) c_~min2~0) (< (+ ~M~0 1) c_~N~0))))) (forall ((v_ArrVal_1147 (Array Int Int))) (let ((.cse18 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1147) c_~A~0.base))) (let ((.cse19 (select .cse18 c_~A~0.offset))) (or (< (select .cse18 .cse1) c_~min1~0) (<= c_~min2~0 .cse19) (forall ((~M~0 Int)) (let ((.cse20 (select .cse18 (+ c_~A~0.offset (* ~M~0 4))))) (or (= c_~min1~0 .cse20) (<= .cse19 .cse20) (<= c_~N~0 ~M~0) (< (+ ~M~0 1) c_~N~0)))))))))) is different from false [2023-08-24 03:00:26,633 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse3 (+ c_~A~0.offset (* c_thread1Thread1of1ForFork2_~i~0 4)))) (and (forall ((v_ArrVal_1147 (Array Int Int)) (v_ArrVal_1146 (Array Int Int))) (let ((.cse2 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1146) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1147) c_~A~0.base))) (let ((.cse0 (select .cse2 c_~A~0.offset)) (.cse1 (select .cse2 .cse3))) (or (= .cse0 .cse1) (forall ((~M~0 Int)) (or (< (select .cse2 (+ c_~A~0.offset (* ~M~0 4))) .cse0) (<= c_~N~0 ~M~0) (< (+ ~M~0 1) c_~N~0))) (<= c_~min2~0 .cse0) (<= c_~min1~0 .cse1))))) (forall ((v_ArrVal_1147 (Array Int Int)) (v_ArrVal_1146 (Array Int Int))) (let ((.cse4 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1146) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1147) c_~A~0.base))) (let ((.cse6 (select .cse4 .cse3))) (or (< (select .cse4 c_~A~0.offset) c_~min2~0) (forall ((~M~0 Int)) (let ((.cse5 (select .cse4 (+ c_~A~0.offset (* ~M~0 4))))) (or (<= c_~N~0 ~M~0) (<= c_~min2~0 .cse5) (= .cse5 .cse6) (< (+ ~M~0 1) c_~N~0)))) (<= c_~min1~0 .cse6))))) (forall ((v_ArrVal_1147 (Array Int Int)) (v_ArrVal_1146 (Array Int Int))) (let ((.cse9 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1146) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1147) c_~A~0.base))) (let ((.cse7 (select .cse9 c_~A~0.offset))) (or (forall ((~M~0 Int)) (let ((.cse8 (select .cse9 (+ c_~A~0.offset (* ~M~0 4))))) (or (<= .cse7 .cse8) (= c_~min1~0 .cse8) (<= c_~N~0 ~M~0) (< (+ ~M~0 1) c_~N~0)))) (< (select .cse9 .cse3) c_~min1~0) (<= c_~min2~0 .cse7))))) (forall ((v_ArrVal_1147 (Array Int Int)) (v_ArrVal_1146 (Array Int Int))) (let ((.cse10 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1146) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1147) c_~A~0.base))) (or (< (select .cse10 .cse3) c_~min1~0) (< (select .cse10 c_~A~0.offset) c_~min2~0) (forall ((~M~0 Int)) (let ((.cse11 (select .cse10 (+ c_~A~0.offset (* ~M~0 4))))) (or (= c_~min1~0 .cse11) (<= c_~N~0 ~M~0) (<= c_~min2~0 .cse11) (< (+ ~M~0 1) c_~N~0))))))) (forall ((v_ArrVal_1147 (Array Int Int)) (v_ArrVal_1146 (Array Int Int))) (let ((.cse12 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1146) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1147) c_~A~0.base))) (let ((.cse13 (select .cse12 .cse3))) (or (< (select .cse12 c_~A~0.offset) c_~min2~0) (= c_~min2~0 .cse13) (forall ((~M~0 Int)) (or (<= c_~N~0 ~M~0) (< (select .cse12 (+ c_~A~0.offset (* ~M~0 4))) c_~min2~0) (< (+ ~M~0 1) c_~N~0))) (<= c_~min1~0 .cse13))))) (or (= c_~min2~0 c_~min1~0) (forall ((~M~0 Int) (v_ArrVal_1147 (Array Int Int)) (v_ArrVal_1146 (Array Int Int))) (let ((.cse14 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1146) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1147) c_~A~0.base))) (or (< (select .cse14 .cse3) c_~min1~0) (< (select .cse14 c_~A~0.offset) c_~min2~0) (<= c_~N~0 ~M~0) (< (select .cse14 (+ c_~A~0.offset (* ~M~0 4))) c_~min2~0) (< (+ ~M~0 1) c_~N~0))))) (forall ((v_ArrVal_1147 (Array Int Int)) (v_ArrVal_1146 (Array Int Int))) (let ((.cse15 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1146) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1147) c_~A~0.base))) (let ((.cse16 (select .cse15 c_~A~0.offset))) (or (< (select .cse15 .cse3) c_~min1~0) (= c_~min1~0 .cse16) (forall ((~M~0 Int)) (or (< (select .cse15 (+ c_~A~0.offset (* ~M~0 4))) .cse16) (<= c_~N~0 ~M~0) (< (+ ~M~0 1) c_~N~0))) (<= c_~min2~0 .cse16))))) (forall ((v_ArrVal_1147 (Array Int Int)) (v_ArrVal_1146 (Array Int Int))) (let ((.cse20 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_1146) |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_1147) c_~A~0.base))) (let ((.cse17 (select .cse20 c_~A~0.offset)) (.cse19 (select .cse20 .cse3))) (or (forall ((~M~0 Int)) (let ((.cse18 (select .cse20 (+ c_~A~0.offset (* ~M~0 4))))) (or (<= .cse17 .cse18) (<= c_~N~0 ~M~0) (= .cse18 .cse19) (< (+ ~M~0 1) c_~N~0)))) (<= c_~min2~0 .cse17) (<= c_~min1~0 .cse19))))))) is different from false [2023-08-24 03:00:27,360 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:00:27,361 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 0 disjoint index pairs (out of 55 index pairs), introduced 11 new quantified variables, introduced 55 case distinctions, treesize of input 3635 treesize of output 3659 [2023-08-24 03:00:27,694 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:00:27,695 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1899 treesize of output 1902 [2023-08-24 03:00:27,953 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:00:27,954 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1873 treesize of output 1850 [2023-08-24 03:00:28,193 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:00:28,194 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1821 treesize of output 1831 [2023-08-24 03:00:28,402 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:00:28,403 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1802 treesize of output 1793 [2023-08-24 03:00:28,599 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:00:28,600 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1764 treesize of output 1771 [2023-08-24 03:00:28,788 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:00:28,789 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1742 treesize of output 1748 [2023-08-24 03:00:28,974 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:00:28,975 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1719 treesize of output 1702 [2023-08-24 03:00:29,154 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:00:29,155 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1673 treesize of output 1642 [2023-08-24 03:00:29,281 INFO L209 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2023-08-24 03:00:29,374 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:00:29,375 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1613 treesize of output 1612 [2023-08-24 03:00:29,589 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:00:29,590 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1583 treesize of output 1568 [2023-08-24 03:00:29,806 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:00:29,806 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1539 treesize of output 1547 [2023-08-24 03:00:30,041 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:00:30,041 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1518 treesize of output 1532 [2023-08-24 03:00:30,309 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:00:30,310 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1503 treesize of output 1502 [2023-08-24 03:00:30,546 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:00:30,547 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1473 treesize of output 1446 [2023-08-24 03:00:30,806 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:00:30,807 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1417 treesize of output 1418 [2023-08-24 03:00:31,082 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 03:00:31,082 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 1389 treesize of output 1376 Received shutdown request... [2023-08-24 03:12:49,649 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-24 03:12:49,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2023-08-24 03:12:49,657 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 03:12:49,658 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 03:12:49,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-08-24 03:12:49,855 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-112-11-7-11-7-11-7-11-7-11-7-11-7-11-7-11-7-11-7-14-3-14-3-2-2-1 context. [2023-08-24 03:12:49,857 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-24 03:12:49,857 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-24 03:12:49,857 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-24 03:12:49,857 INFO L445 BasicCegarLoop]: Path program histogram: [19, 3, 1, 1, 1, 1] [2023-08-24 03:12:49,860 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 03:12:49,860 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 03:12:49,863 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 03:12:49 BasicIcfg [2023-08-24 03:12:49,863 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 03:12:49,863 INFO L158 Benchmark]: Toolchain (without parser) took 822067.71ms. Allocated memory was 434.1MB in the beginning and 2.0GB in the end (delta: 1.6GB). Free memory was 389.8MB in the beginning and 829.3MB in the end (delta: -439.5MB). Peak memory consumption was 1.5GB. Max. memory is 16.0GB. [2023-08-24 03:12:49,863 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 434.1MB. Free memory is still 411.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 03:12:49,864 INFO L158 Benchmark]: CACSL2BoogieTranslator took 251.44ms. Allocated memory is still 434.1MB. Free memory was 389.5MB in the beginning and 378.0MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 03:12:49,864 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.78ms. Allocated memory is still 434.1MB. Free memory was 378.0MB in the beginning and 376.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 03:12:49,864 INFO L158 Benchmark]: Boogie Preprocessor took 31.19ms. Allocated memory is still 434.1MB. Free memory was 376.2MB in the beginning and 374.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 03:12:49,864 INFO L158 Benchmark]: RCFGBuilder took 532.18ms. Allocated memory is still 434.1MB. Free memory was 374.3MB in the beginning and 393.0MB in the end (delta: -18.6MB). Peak memory consumption was 6.5MB. Max. memory is 16.0GB. [2023-08-24 03:12:49,865 INFO L158 Benchmark]: TraceAbstraction took 821203.71ms. Allocated memory was 434.1MB in the beginning and 2.0GB in the end (delta: 1.6GB). Free memory was 391.9MB in the beginning and 829.3MB in the end (delta: -437.5MB). Peak memory consumption was 1.5GB. Max. memory is 16.0GB. [2023-08-24 03:12:49,866 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 434.1MB. Free memory is still 411.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 251.44ms. Allocated memory is still 434.1MB. Free memory was 389.5MB in the beginning and 378.0MB in the end (delta: 11.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 37.78ms. Allocated memory is still 434.1MB. Free memory was 378.0MB in the beginning and 376.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.19ms. Allocated memory is still 434.1MB. Free memory was 376.2MB in the beginning and 374.6MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 532.18ms. Allocated memory is still 434.1MB. Free memory was 374.3MB in the beginning and 393.0MB in the end (delta: -18.6MB). Peak memory consumption was 6.5MB. Max. memory is 16.0GB. * TraceAbstraction took 821203.71ms. Allocated memory was 434.1MB in the beginning and 2.0GB in the end (delta: 1.6GB). Free memory was 391.9MB in the beginning and 829.3MB in the end (delta: -437.5MB). Peak memory consumption was 1.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3s, 133 PlacesBefore, 30 PlacesAfterwards, 135 TransitionsBefore, 24 TransitionsAfterwards, 1518 CoEnabledTransitionPairs, 8 FixpointIterations, 71 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 17 TrivialYvCompositions, 6 ConcurrentYvCompositions, 8 ChoiceCompositions, 132 TotalNumberOfCompositions, 1676 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1594, independent: 1574, independent conditional: 0, independent unconditional: 1574, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 813, independent: 805, independent conditional: 0, independent unconditional: 805, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1594, independent: 769, independent conditional: 0, independent unconditional: 769, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 813, unknown conditional: 0, unknown unconditional: 813] , Statistics on independence cache: Total cache size (in pairs): 52, Positive cache size: 50, Positive conditional cache size: 0, Positive unconditional cache size: 50, Negative cache size: 2, Negative conditional cache size: 0, Negative unconditional cache size: 2, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 100]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-112-11-7-11-7-11-7-11-7-11-7-11-7-11-7-11-7-11-7-14-3-14-3-2-2-1 context. - TimeoutResultAtElement [Line: 94]: 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 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-112-11-7-11-7-11-7-11-7-11-7-11-7-11-7-11-7-11-7-14-3-14-3-2-2-1 context. - TimeoutResultAtElement [Line: 92]: 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 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-112-11-7-11-7-11-7-11-7-11-7-11-7-11-7-11-7-11-7-14-3-14-3-2-2-1 context. - TimeoutResultAtElement [Line: 93]: 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 27 with TraceHistMax 2,while TraceCheckSpWp was constructing backward predicates,while PolyPacSimplificationTermWalker was simplifying a ∧-2-1 term,while PolyPacSimplificationTermWalker was simplifying 2 xjuncts wrt. a ∧-112-11-7-11-7-11-7-11-7-11-7-11-7-11-7-11-7-11-7-14-3-14-3-2-2-1 context. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 170 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: 821.1s, OverallIterations: 26, TraceHistogramMax: 2, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.0s, AutomataDifference: 36.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.4s, HoareTripleCheckerStatistics: 3 mSolverCounterUnknown, 2788 SdHoareTripleChecker+Valid, 8.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2788 mSDsluCounter, 926 SdHoareTripleChecker+Invalid, 7.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 254 IncrementalHoareTripleChecker+Unchecked, 814 mSDsCounter, 163 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14935 IncrementalHoareTripleChecker+Invalid, 15355 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 163 mSolverCounterUnsat, 112 mSDtfsCounter, 14935 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1495 GetRequests, 776 SyntacticMatches, 40 SemanticMatches, 679 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 6026 ImplicationChecksByTransitivity, 23.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11019occurred in iteration=23, InterpolantAutomatonStates: 407, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 23.9s InterpolantComputationTime, 1137 NumberOfCodeBlocks, 1126 NumberOfCodeBlocksAsserted, 64 NumberOfCheckSat, 1614 ConstructedInterpolants, 22 QuantifiedInterpolants, 15538 SizeOfPredicates, 186 NumberOfNonLiveVariables, 4886 ConjunctsInSsa, 408 ConjunctsInUnsatCore, 71 InterpolantComputations, 4 PerfectInterpolantSequences, 133/322 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