/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 15:41:43,971 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 15:41:44,040 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf [2023-11-17 15:41:44,064 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 15:41:44,065 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 15:41:44,066 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 15:41:44,066 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 15:41:44,066 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 15:41:44,067 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 15:41:44,069 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 15:41:44,070 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 15:41:44,070 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 15:41:44,070 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 15:41:44,071 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 15:41:44,071 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 15:41:44,072 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 15:41:44,072 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 15:41:44,072 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 15:41:44,072 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 15:41:44,072 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 15:41:44,072 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 15:41:44,073 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 15:41:44,073 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 15:41:44,073 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 15:41:44,073 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 15:41:44,074 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:41:44,074 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 15:41:44,074 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 15:41:44,074 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 15:41:44,074 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 15:41:44,075 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 15:41:44,075 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 15:41:44,075 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-17 15:41:44,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 15:41:44,285 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 15:41:44,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 15:41:44,287 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 15:41:44,288 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 15:41:44,288 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2023-11-17 15:41:45,166 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 15:41:45,361 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 15:41:45,361 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2023-11-17 15:41:45,371 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aee9c735/3fa05103b18843dc8f265dcdca5f7745/FLAG74541040c [2023-11-17 15:41:45,382 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aee9c735/3fa05103b18843dc8f265dcdca5f7745 [2023-11-17 15:41:45,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 15:41:45,385 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 15:41:45,386 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 15:41:45,386 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 15:41:45,389 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 15:41:45,390 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:41:45" (1/1) ... [2023-11-17 15:41:45,391 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb4c29e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:45, skipping insertion in model container [2023-11-17 15:41:45,391 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 03:41:45" (1/1) ... [2023-11-17 15:41:45,428 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 15:41:45,522 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2023-11-17 15:41:45,646 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:41:45,658 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 15:41:45,667 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i[1120,1133] [2023-11-17 15:41:45,699 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 15:41:45,736 INFO L206 MainTranslator]: Completed translation [2023-11-17 15:41:45,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:45 WrapperNode [2023-11-17 15:41:45,736 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 15:41:45,737 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 15:41:45,737 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 15:41:45,738 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 15:41:45,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:45" (1/1) ... [2023-11-17 15:41:45,761 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:45" (1/1) ... [2023-11-17 15:41:45,778 INFO L138 Inliner]: procedures = 166, calls = 49, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 164 [2023-11-17 15:41:45,779 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 15:41:45,779 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 15:41:45,779 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 15:41:45,779 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 15:41:45,788 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:45" (1/1) ... [2023-11-17 15:41:45,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:45" (1/1) ... [2023-11-17 15:41:45,791 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:45" (1/1) ... [2023-11-17 15:41:45,791 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:45" (1/1) ... [2023-11-17 15:41:45,795 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:45" (1/1) ... [2023-11-17 15:41:45,796 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:45" (1/1) ... [2023-11-17 15:41:45,797 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:45" (1/1) ... [2023-11-17 15:41:45,798 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:45" (1/1) ... [2023-11-17 15:41:45,800 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 15:41:45,817 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 15:41:45,817 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 15:41:45,817 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 15:41:45,818 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:45" (1/1) ... [2023-11-17 15:41:45,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 15:41:45,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 15:41:45,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-17 15:41:45,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-17 15:41:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 15:41:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-17 15:41:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 15:41:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 15:41:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-17 15:41:45,865 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-17 15:41:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 15:41:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 15:41:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-17 15:41:45,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 15:41:45,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 15:41:45,866 WARN L211 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-17 15:41:45,969 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 15:41:45,971 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 15:41:46,157 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 15:41:46,187 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 15:41:46,187 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 15:41:46,188 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:41:46 BoogieIcfgContainer [2023-11-17 15:41:46,188 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 15:41:46,190 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 15:41:46,190 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 15:41:46,192 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 15:41:46,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 03:41:45" (1/3) ... [2023-11-17 15:41:46,192 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9a3dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:41:46, skipping insertion in model container [2023-11-17 15:41:46,192 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 03:41:45" (2/3) ... [2023-11-17 15:41:46,193 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e9a3dee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 03:41:46, skipping insertion in model container [2023-11-17 15:41:46,193 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 03:41:46" (3/3) ... [2023-11-17 15:41:46,193 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_22-traces-write-centered-vs-meet-mutex_true_no-overflow.i [2023-11-17 15:41:46,205 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 15:41:46,205 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-17 15:41:46,205 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 15:41:46,284 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 15:41:46,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 186 places, 191 transitions, 386 flow [2023-11-17 15:41:46,414 INFO L124 PetriNetUnfolderBase]: 8/194 cut-off events. [2023-11-17 15:41:46,415 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:41:46,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198 conditions, 194 events. 8/194 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 178 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 147. Up to 2 conditions per place. [2023-11-17 15:41:46,421 INFO L82 GeneralOperation]: Start removeDead. Operand has 186 places, 191 transitions, 386 flow [2023-11-17 15:41:46,428 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 189 transitions, 381 flow [2023-11-17 15:41:46,434 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 15:41:46,444 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 189 transitions, 381 flow [2023-11-17 15:41:46,446 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 189 transitions, 381 flow [2023-11-17 15:41:46,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 189 transitions, 381 flow [2023-11-17 15:41:46,469 INFO L124 PetriNetUnfolderBase]: 8/189 cut-off events. [2023-11-17 15:41:46,469 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:41:46,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 189 events. 8/189 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 168 event pairs, 0 based on Foata normal form. 0/178 useless extension candidates. Maximal degree in co-relation 147. Up to 2 conditions per place. [2023-11-17 15:41:46,474 INFO L119 LiptonReduction]: Number of co-enabled transitions 10260 [2023-11-17 15:41:50,915 INFO L134 LiptonReduction]: Checked pairs total: 21386 [2023-11-17 15:41:50,915 INFO L136 LiptonReduction]: Total number of compositions: 218 [2023-11-17 15:41:50,933 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 15:41:50,939 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5e667e64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 15:41:50,939 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-17 15:41:50,945 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 15:41:50,946 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2023-11-17 15:41:50,946 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:41:50,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:50,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-17 15:41:50,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 15:41:50,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:50,950 INFO L85 PathProgramCache]: Analyzing trace with hash 24613988, now seen corresponding path program 1 times [2023-11-17 15:41:50,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:50,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451002135] [2023-11-17 15:41:50,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:50,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:51,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:41:51,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:51,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451002135] [2023-11-17 15:41:51,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451002135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:51,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:51,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:41:51,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105455306] [2023-11-17 15:41:51,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:51,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-17 15:41:51,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:51,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-17 15:41:51,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-17 15:41:51,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 409 [2023-11-17 15:41:51,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 67 flow. Second operand has 2 states, 2 states have (on average 168.0) internal successors, (336), 2 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:51,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:51,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 409 [2023-11-17 15:41:51,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:51,223 INFO L124 PetriNetUnfolderBase]: 183/380 cut-off events. [2023-11-17 15:41:51,223 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:41:51,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 765 conditions, 380 events. 183/380 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1330 event pairs, 169 based on Foata normal form. 0/324 useless extension candidates. Maximal degree in co-relation 756. Up to 381 conditions per place. [2023-11-17 15:41:51,226 INFO L140 encePairwiseOnDemand]: 406/409 looper letters, 25 selfloop transitions, 0 changer transitions 4/29 dead transitions. [2023-11-17 15:41:51,226 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 29 transitions, 119 flow [2023-11-17 15:41:51,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-17 15:41:51,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-11-17 15:41:51,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 364 transitions. [2023-11-17 15:41:51,245 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4449877750611247 [2023-11-17 15:41:51,245 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 364 transitions. [2023-11-17 15:41:51,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 364 transitions. [2023-11-17 15:41:51,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:51,250 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 364 transitions. [2023-11-17 15:41:51,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 182.0) internal successors, (364), 2 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:51,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 409.0) internal successors, (1227), 3 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:51,258 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 409.0) internal successors, (1227), 3 states have internal predecessors, (1227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:51,259 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 67 flow. Second operand 2 states and 364 transitions. [2023-11-17 15:41:51,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 29 transitions, 119 flow [2023-11-17 15:41:51,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 29 transitions, 118 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:41:51,263 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 52 flow [2023-11-17 15:41:51,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=52, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2023-11-17 15:41:51,267 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 0 predicate places. [2023-11-17 15:41:51,267 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 52 flow [2023-11-17 15:41:51,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 168.0) internal successors, (336), 2 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:51,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:51,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 15:41:51,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 15:41:51,269 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 15:41:51,274 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:51,274 INFO L85 PathProgramCache]: Analyzing trace with hash -2116412970, now seen corresponding path program 1 times [2023-11-17 15:41:51,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:51,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420025251] [2023-11-17 15:41:51,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:51,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:51,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:51,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:41:51,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:51,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420025251] [2023-11-17 15:41:51,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420025251] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:51,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:51,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 15:41:51,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2734666] [2023-11-17 15:41:51,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:51,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 15:41:51,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:51,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 15:41:51,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-17 15:41:51,439 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 409 [2023-11-17 15:41:51,440 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 52 flow. Second operand has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:51,440 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:51,440 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 409 [2023-11-17 15:41:51,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:51,518 INFO L124 PetriNetUnfolderBase]: 132/290 cut-off events. [2023-11-17 15:41:51,518 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 15:41:51,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 585 conditions, 290 events. 132/290 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1013 event pairs, 14 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 582. Up to 210 conditions per place. [2023-11-17 15:41:51,519 INFO L140 encePairwiseOnDemand]: 404/409 looper letters, 40 selfloop transitions, 5 changer transitions 0/45 dead transitions. [2023-11-17 15:41:51,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 45 transitions, 182 flow [2023-11-17 15:41:51,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:41:51,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:41:51,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 807 transitions. [2023-11-17 15:41:51,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946210268948655 [2023-11-17 15:41:51,522 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 807 transitions. [2023-11-17 15:41:51,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 807 transitions. [2023-11-17 15:41:51,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:51,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 807 transitions. [2023-11-17 15:41:51,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 161.4) internal successors, (807), 5 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:51,527 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 409.0) internal successors, (2454), 6 states have internal predecessors, (2454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:51,528 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 409.0) internal successors, (2454), 6 states have internal predecessors, (2454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:51,528 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 52 flow. Second operand 5 states and 807 transitions. [2023-11-17 15:41:51,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 45 transitions, 182 flow [2023-11-17 15:41:51,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 45 transitions, 182 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-17 15:41:51,529 INFO L231 Difference]: Finished difference. Result has 36 places, 28 transitions, 83 flow [2023-11-17 15:41:51,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=83, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2023-11-17 15:41:51,529 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 4 predicate places. [2023-11-17 15:41:51,529 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 83 flow [2023-11-17 15:41:51,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 153.5) internal successors, (614), 4 states have internal predecessors, (614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:51,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:51,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:51,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 15:41:51,530 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 15:41:51,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:51,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1941600828, now seen corresponding path program 1 times [2023-11-17 15:41:51,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:51,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022888325] [2023-11-17 15:41:51,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:51,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:51,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:41:51,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:51,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022888325] [2023-11-17 15:41:51,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022888325] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:51,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:51,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:41:51,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866933770] [2023-11-17 15:41:51,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:51,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:41:51,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:51,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:41:51,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:41:51,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 409 [2023-11-17 15:41:51,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 83 flow. Second operand has 6 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:51,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:51,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 409 [2023-11-17 15:41:51,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:51,806 INFO L124 PetriNetUnfolderBase]: 158/356 cut-off events. [2023-11-17 15:41:51,806 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-11-17 15:41:51,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 356 events. 158/356 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1351 event pairs, 62 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 794. Up to 204 conditions per place. [2023-11-17 15:41:51,808 INFO L140 encePairwiseOnDemand]: 402/409 looper letters, 59 selfloop transitions, 14 changer transitions 0/73 dead transitions. [2023-11-17 15:41:51,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 73 transitions, 333 flow [2023-11-17 15:41:51,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-17 15:41:51,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-17 15:41:51,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1671 transitions. [2023-11-17 15:41:51,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3714158701933763 [2023-11-17 15:41:51,811 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1671 transitions. [2023-11-17 15:41:51,812 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1671 transitions. [2023-11-17 15:41:51,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:51,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1671 transitions. [2023-11-17 15:41:51,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 151.9090909090909) internal successors, (1671), 11 states have internal predecessors, (1671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:51,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 409.0) internal successors, (4908), 12 states have internal predecessors, (4908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:51,821 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 409.0) internal successors, (4908), 12 states have internal predecessors, (4908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:51,821 INFO L175 Difference]: Start difference. First operand has 36 places, 28 transitions, 83 flow. Second operand 11 states and 1671 transitions. [2023-11-17 15:41:51,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 73 transitions, 333 flow [2023-11-17 15:41:51,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 73 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:41:51,823 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 157 flow [2023-11-17 15:41:51,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=157, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2023-11-17 15:41:51,824 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 16 predicate places. [2023-11-17 15:41:51,824 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 157 flow [2023-11-17 15:41:51,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 146.33333333333334) internal successors, (878), 6 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:51,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:51,825 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:51,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 15:41:51,825 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 15:41:51,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:51,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1888853005, now seen corresponding path program 1 times [2023-11-17 15:41:51,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:51,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289150142] [2023-11-17 15:41:51,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:51,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:51,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:41:51,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:51,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289150142] [2023-11-17 15:41:51,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289150142] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:51,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:51,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:41:51,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579749331] [2023-11-17 15:41:51,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:51,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 15:41:51,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:51,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 15:41:51,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 15:41:51,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 409 [2023-11-17 15:41:51,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:51,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:51,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 409 [2023-11-17 15:41:51,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:51,926 INFO L124 PetriNetUnfolderBase]: 105/268 cut-off events. [2023-11-17 15:41:51,926 INFO L125 PetriNetUnfolderBase]: For 89/89 co-relation queries the response was YES. [2023-11-17 15:41:51,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 268 events. 105/268 cut-off events. For 89/89 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1060 event pairs, 37 based on Foata normal form. 16/284 useless extension candidates. Maximal degree in co-relation 653. Up to 151 conditions per place. [2023-11-17 15:41:51,927 INFO L140 encePairwiseOnDemand]: 401/409 looper letters, 35 selfloop transitions, 9 changer transitions 0/44 dead transitions. [2023-11-17 15:41:51,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 44 transitions, 242 flow [2023-11-17 15:41:51,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 15:41:51,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 15:41:51,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions. [2023-11-17 15:41:51,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4254278728606357 [2023-11-17 15:41:51,929 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions. [2023-11-17 15:41:51,929 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions. [2023-11-17 15:41:51,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:51,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions. [2023-11-17 15:41:51,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:51,932 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:51,932 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 409.0) internal successors, (1636), 4 states have internal predecessors, (1636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:51,933 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 157 flow. Second operand 3 states and 522 transitions. [2023-11-17 15:41:51,933 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 44 transitions, 242 flow [2023-11-17 15:41:51,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 44 transitions, 223 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-11-17 15:41:51,966 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 138 flow [2023-11-17 15:41:51,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2023-11-17 15:41:51,967 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 11 predicate places. [2023-11-17 15:41:51,967 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 138 flow [2023-11-17 15:41:51,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:51,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:51,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:51,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 15:41:51,968 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 15:41:51,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:51,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1862647534, now seen corresponding path program 1 times [2023-11-17 15:41:51,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:51,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184195374] [2023-11-17 15:41:51,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:51,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:52,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:41:52,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:52,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184195374] [2023-11-17 15:41:52,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184195374] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:52,137 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:52,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:41:52,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187678174] [2023-11-17 15:41:52,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:52,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:41:52,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:52,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:41:52,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:41:52,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 409 [2023-11-17 15:41:52,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 138 flow. Second operand has 6 states, 6 states have (on average 145.66666666666666) internal successors, (874), 6 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:52,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 409 [2023-11-17 15:41:52,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:52,281 INFO L124 PetriNetUnfolderBase]: 101/272 cut-off events. [2023-11-17 15:41:52,281 INFO L125 PetriNetUnfolderBase]: For 90/90 co-relation queries the response was YES. [2023-11-17 15:41:52,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 272 events. 101/272 cut-off events. For 90/90 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1086 event pairs, 56 based on Foata normal form. 14/286 useless extension candidates. Maximal degree in co-relation 748. Up to 176 conditions per place. [2023-11-17 15:41:52,283 INFO L140 encePairwiseOnDemand]: 401/409 looper letters, 61 selfloop transitions, 11 changer transitions 3/75 dead transitions. [2023-11-17 15:41:52,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 75 transitions, 434 flow [2023-11-17 15:41:52,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 15:41:52,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 15:41:52,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1370 transitions. [2023-11-17 15:41:52,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721814724259712 [2023-11-17 15:41:52,286 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1370 transitions. [2023-11-17 15:41:52,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1370 transitions. [2023-11-17 15:41:52,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:52,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1370 transitions. [2023-11-17 15:41:52,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 152.22222222222223) internal successors, (1370), 9 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,292 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 409.0) internal successors, (4090), 10 states have internal predecessors, (4090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,293 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 409.0) internal successors, (4090), 10 states have internal predecessors, (4090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,293 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 138 flow. Second operand 9 states and 1370 transitions. [2023-11-17 15:41:52,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 75 transitions, 434 flow [2023-11-17 15:41:52,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 75 transitions, 413 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:41:52,295 INFO L231 Difference]: Finished difference. Result has 52 places, 39 transitions, 187 flow [2023-11-17 15:41:52,295 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=187, PETRI_PLACES=52, PETRI_TRANSITIONS=39} [2023-11-17 15:41:52,296 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 20 predicate places. [2023-11-17 15:41:52,296 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 39 transitions, 187 flow [2023-11-17 15:41:52,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 145.66666666666666) internal successors, (874), 6 states have internal predecessors, (874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:52,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:52,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 15:41:52,297 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 15:41:52,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:52,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1966749631, now seen corresponding path program 1 times [2023-11-17 15:41:52,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:52,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533827981] [2023-11-17 15:41:52,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:52,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:52,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:41:52,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:52,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533827981] [2023-11-17 15:41:52,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533827981] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:52,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:52,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:41:52,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019040638] [2023-11-17 15:41:52,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:52,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:41:52,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:52,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:41:52,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:41:52,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 409 [2023-11-17 15:41:52,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 39 transitions, 187 flow. Second operand has 5 states, 5 states have (on average 147.4) internal successors, (737), 5 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:52,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 409 [2023-11-17 15:41:52,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:52,501 INFO L124 PetriNetUnfolderBase]: 101/271 cut-off events. [2023-11-17 15:41:52,501 INFO L125 PetriNetUnfolderBase]: For 172/172 co-relation queries the response was YES. [2023-11-17 15:41:52,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 821 conditions, 271 events. 101/271 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1124 event pairs, 68 based on Foata normal form. 1/272 useless extension candidates. Maximal degree in co-relation 809. Up to 223 conditions per place. [2023-11-17 15:41:52,502 INFO L140 encePairwiseOnDemand]: 404/409 looper letters, 46 selfloop transitions, 9 changer transitions 0/55 dead transitions. [2023-11-17 15:41:52,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 55 transitions, 363 flow [2023-11-17 15:41:52,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 15:41:52,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 15:41:52,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 767 transitions. [2023-11-17 15:41:52,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3750611246943765 [2023-11-17 15:41:52,504 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 767 transitions. [2023-11-17 15:41:52,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 767 transitions. [2023-11-17 15:41:52,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:52,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 767 transitions. [2023-11-17 15:41:52,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.4) internal successors, (767), 5 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 409.0) internal successors, (2454), 6 states have internal predecessors, (2454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,508 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 409.0) internal successors, (2454), 6 states have internal predecessors, (2454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,508 INFO L175 Difference]: Start difference. First operand has 52 places, 39 transitions, 187 flow. Second operand 5 states and 767 transitions. [2023-11-17 15:41:52,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 55 transitions, 363 flow [2023-11-17 15:41:52,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 55 transitions, 360 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 15:41:52,511 INFO L231 Difference]: Finished difference. Result has 57 places, 41 transitions, 218 flow [2023-11-17 15:41:52,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=218, PETRI_PLACES=57, PETRI_TRANSITIONS=41} [2023-11-17 15:41:52,511 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 25 predicate places. [2023-11-17 15:41:52,511 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 41 transitions, 218 flow [2023-11-17 15:41:52,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.4) internal successors, (737), 5 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:52,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:52,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 15:41:52,512 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 15:41:52,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:52,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1633067482, now seen corresponding path program 1 times [2023-11-17 15:41:52,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:52,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637010616] [2023-11-17 15:41:52,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:52,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:52,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:41:52,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:52,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637010616] [2023-11-17 15:41:52,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637010616] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:52,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:52,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-17 15:41:52,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401650290] [2023-11-17 15:41:52,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:52,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:41:52,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:52,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:41:52,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:41:52,568 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 409 [2023-11-17 15:41:52,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 41 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 153.6) internal successors, (768), 5 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,569 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:52,569 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 409 [2023-11-17 15:41:52,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:52,648 INFO L124 PetriNetUnfolderBase]: 92/253 cut-off events. [2023-11-17 15:41:52,649 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2023-11-17 15:41:52,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 805 conditions, 253 events. 92/253 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 988 event pairs, 55 based on Foata normal form. 9/262 useless extension candidates. Maximal degree in co-relation 790. Up to 175 conditions per place. [2023-11-17 15:41:52,650 INFO L140 encePairwiseOnDemand]: 402/409 looper letters, 53 selfloop transitions, 11 changer transitions 1/65 dead transitions. [2023-11-17 15:41:52,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 65 transitions, 444 flow [2023-11-17 15:41:52,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:41:52,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:41:52,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1117 transitions. [2023-11-17 15:41:52,661 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39015019210618235 [2023-11-17 15:41:52,661 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1117 transitions. [2023-11-17 15:41:52,662 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1117 transitions. [2023-11-17 15:41:52,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:52,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1117 transitions. [2023-11-17 15:41:52,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 159.57142857142858) internal successors, (1117), 7 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 409.0) internal successors, (3272), 8 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,667 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 409.0) internal successors, (3272), 8 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,667 INFO L175 Difference]: Start difference. First operand has 57 places, 41 transitions, 218 flow. Second operand 7 states and 1117 transitions. [2023-11-17 15:41:52,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 65 transitions, 444 flow [2023-11-17 15:41:52,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 65 transitions, 427 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 15:41:52,669 INFO L231 Difference]: Finished difference. Result has 64 places, 44 transitions, 263 flow [2023-11-17 15:41:52,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=263, PETRI_PLACES=64, PETRI_TRANSITIONS=44} [2023-11-17 15:41:52,669 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 32 predicate places. [2023-11-17 15:41:52,669 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 44 transitions, 263 flow [2023-11-17 15:41:52,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 153.6) internal successors, (768), 5 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:52,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:52,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 15:41:52,670 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 15:41:52,670 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:52,670 INFO L85 PathProgramCache]: Analyzing trace with hash 260751845, now seen corresponding path program 1 times [2023-11-17 15:41:52,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:52,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836182381] [2023-11-17 15:41:52,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:52,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:52,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:41:52,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:52,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836182381] [2023-11-17 15:41:52,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836182381] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:52,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:52,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:41:52,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666508376] [2023-11-17 15:41:52,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:52,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:41:52,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:52,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:41:52,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:41:52,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 409 [2023-11-17 15:41:52,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 44 transitions, 263 flow. Second operand has 6 states, 6 states have (on average 150.33333333333334) internal successors, (902), 6 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:52,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 409 [2023-11-17 15:41:52,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:52,872 INFO L124 PetriNetUnfolderBase]: 77/219 cut-off events. [2023-11-17 15:41:52,872 INFO L125 PetriNetUnfolderBase]: For 247/247 co-relation queries the response was YES. [2023-11-17 15:41:52,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 758 conditions, 219 events. 77/219 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 843 event pairs, 25 based on Foata normal form. 4/223 useless extension candidates. Maximal degree in co-relation 740. Up to 117 conditions per place. [2023-11-17 15:41:52,873 INFO L140 encePairwiseOnDemand]: 404/409 looper letters, 45 selfloop transitions, 8 changer transitions 3/56 dead transitions. [2023-11-17 15:41:52,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 56 transitions, 439 flow [2023-11-17 15:41:52,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:41:52,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:41:52,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 628 transitions. [2023-11-17 15:41:52,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38386308068459657 [2023-11-17 15:41:52,875 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 628 transitions. [2023-11-17 15:41:52,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 628 transitions. [2023-11-17 15:41:52,875 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:52,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 628 transitions. [2023-11-17 15:41:52,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 409.0) internal successors, (2045), 5 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,878 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 409.0) internal successors, (2045), 5 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,878 INFO L175 Difference]: Start difference. First operand has 64 places, 44 transitions, 263 flow. Second operand 4 states and 628 transitions. [2023-11-17 15:41:52,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 56 transitions, 439 flow [2023-11-17 15:41:52,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 56 transitions, 427 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-11-17 15:41:52,881 INFO L231 Difference]: Finished difference. Result has 64 places, 42 transitions, 258 flow [2023-11-17 15:41:52,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=258, PETRI_PLACES=64, PETRI_TRANSITIONS=42} [2023-11-17 15:41:52,883 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 32 predicate places. [2023-11-17 15:41:52,883 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 42 transitions, 258 flow [2023-11-17 15:41:52,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 150.33333333333334) internal successors, (902), 6 states have internal predecessors, (902), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:52,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:52,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 15:41:52,884 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 15:41:52,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:52,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1163843364, now seen corresponding path program 1 times [2023-11-17 15:41:52,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:52,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796405456] [2023-11-17 15:41:52,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:52,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:52,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:52,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:41:52,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:52,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796405456] [2023-11-17 15:41:52,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796405456] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:52,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:52,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 15:41:52,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335569644] [2023-11-17 15:41:52,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:52,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 15:41:52,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:52,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 15:41:52,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 15:41:52,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 409 [2023-11-17 15:41:52,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 42 transitions, 258 flow. Second operand has 6 states, 6 states have (on average 142.5) internal successors, (855), 6 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:52,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:52,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 409 [2023-11-17 15:41:52,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:53,092 INFO L124 PetriNetUnfolderBase]: 70/201 cut-off events. [2023-11-17 15:41:53,093 INFO L125 PetriNetUnfolderBase]: For 226/226 co-relation queries the response was YES. [2023-11-17 15:41:53,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 722 conditions, 201 events. 70/201 cut-off events. For 226/226 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 701 event pairs, 9 based on Foata normal form. 9/210 useless extension candidates. Maximal degree in co-relation 704. Up to 62 conditions per place. [2023-11-17 15:41:53,094 INFO L140 encePairwiseOnDemand]: 402/409 looper letters, 49 selfloop transitions, 15 changer transitions 1/65 dead transitions. [2023-11-17 15:41:53,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 65 transitions, 510 flow [2023-11-17 15:41:53,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-17 15:41:53,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-17 15:41:53,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1312 transitions. [2023-11-17 15:41:53,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35642488454224397 [2023-11-17 15:41:53,098 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1312 transitions. [2023-11-17 15:41:53,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1312 transitions. [2023-11-17 15:41:53,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:53,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1312 transitions. [2023-11-17 15:41:53,100 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 145.77777777777777) internal successors, (1312), 9 states have internal predecessors, (1312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:53,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 409.0) internal successors, (4090), 10 states have internal predecessors, (4090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:53,104 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 409.0) internal successors, (4090), 10 states have internal predecessors, (4090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:53,104 INFO L175 Difference]: Start difference. First operand has 64 places, 42 transitions, 258 flow. Second operand 9 states and 1312 transitions. [2023-11-17 15:41:53,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 65 transitions, 510 flow [2023-11-17 15:41:53,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 65 transitions, 490 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-17 15:41:53,107 INFO L231 Difference]: Finished difference. Result has 66 places, 44 transitions, 281 flow [2023-11-17 15:41:53,107 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=281, PETRI_PLACES=66, PETRI_TRANSITIONS=44} [2023-11-17 15:41:53,108 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 34 predicate places. [2023-11-17 15:41:53,109 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 44 transitions, 281 flow [2023-11-17 15:41:53,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 142.5) internal successors, (855), 6 states have internal predecessors, (855), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:53,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:53,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:53,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 15:41:53,111 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 15:41:53,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:53,111 INFO L85 PathProgramCache]: Analyzing trace with hash 973430885, now seen corresponding path program 1 times [2023-11-17 15:41:53,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:53,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310205688] [2023-11-17 15:41:53,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:53,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:53,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:41:53,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:53,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310205688] [2023-11-17 15:41:53,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310205688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:53,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:53,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 15:41:53,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317861594] [2023-11-17 15:41:53,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:53,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 15:41:53,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:53,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 15:41:53,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-17 15:41:53,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 409 [2023-11-17 15:41:53,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 44 transitions, 281 flow. Second operand has 8 states, 8 states have (on average 135.25) internal successors, (1082), 8 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:53,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:53,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 409 [2023-11-17 15:41:53,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:53,414 INFO L124 PetriNetUnfolderBase]: 64/187 cut-off events. [2023-11-17 15:41:53,415 INFO L125 PetriNetUnfolderBase]: For 254/254 co-relation queries the response was YES. [2023-11-17 15:41:53,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 698 conditions, 187 events. 64/187 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 617 event pairs, 9 based on Foata normal form. 8/195 useless extension candidates. Maximal degree in co-relation 681. Up to 44 conditions per place. [2023-11-17 15:41:53,416 INFO L140 encePairwiseOnDemand]: 400/409 looper letters, 49 selfloop transitions, 28 changer transitions 3/80 dead transitions. [2023-11-17 15:41:53,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 80 transitions, 617 flow [2023-11-17 15:41:53,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-17 15:41:53,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-17 15:41:53,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2195 transitions. [2023-11-17 15:41:53,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33542176039119803 [2023-11-17 15:41:53,420 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2195 transitions. [2023-11-17 15:41:53,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2195 transitions. [2023-11-17 15:41:53,421 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:53,421 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2195 transitions. [2023-11-17 15:41:53,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 137.1875) internal successors, (2195), 16 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) [2023-11-17 15:41:53,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 409.0) internal successors, (6953), 17 states have internal predecessors, (6953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:53,431 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 409.0) internal successors, (6953), 17 states have internal predecessors, (6953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:53,431 INFO L175 Difference]: Start difference. First operand has 66 places, 44 transitions, 281 flow. Second operand 16 states and 2195 transitions. [2023-11-17 15:41:53,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 80 transitions, 617 flow [2023-11-17 15:41:53,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 80 transitions, 574 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-11-17 15:41:53,433 INFO L231 Difference]: Finished difference. Result has 72 places, 51 transitions, 337 flow [2023-11-17 15:41:53,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=337, PETRI_PLACES=72, PETRI_TRANSITIONS=51} [2023-11-17 15:41:53,434 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 40 predicate places. [2023-11-17 15:41:53,434 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 51 transitions, 337 flow [2023-11-17 15:41:53,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 135.25) internal successors, (1082), 8 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:53,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:53,435 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] [2023-11-17 15:41:53,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 15:41:53,435 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 15:41:53,435 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:53,435 INFO L85 PathProgramCache]: Analyzing trace with hash -835731753, now seen corresponding path program 1 times [2023-11-17 15:41:53,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:53,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63118685] [2023-11-17 15:41:53,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:53,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:53,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:41:53,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:53,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63118685] [2023-11-17 15:41:53,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63118685] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:53,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:53,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:41:53,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811336663] [2023-11-17 15:41:53,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:53,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:41:53,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:53,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:41:53,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:41:53,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 409 [2023-11-17 15:41:53,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 51 transitions, 337 flow. Second operand has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:53,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:53,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 409 [2023-11-17 15:41:53,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:53,645 INFO L124 PetriNetUnfolderBase]: 61/184 cut-off events. [2023-11-17 15:41:53,645 INFO L125 PetriNetUnfolderBase]: For 302/302 co-relation queries the response was YES. [2023-11-17 15:41:53,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 691 conditions, 184 events. 61/184 cut-off events. For 302/302 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 615 event pairs, 34 based on Foata normal form. 4/188 useless extension candidates. Maximal degree in co-relation 677. Up to 128 conditions per place. [2023-11-17 15:41:53,646 INFO L140 encePairwiseOnDemand]: 402/409 looper letters, 42 selfloop transitions, 19 changer transitions 16/77 dead transitions. [2023-11-17 15:41:53,646 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 77 transitions, 612 flow [2023-11-17 15:41:53,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 15:41:53,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 15:41:53,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1018 transitions. [2023-11-17 15:41:53,649 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3555710792874607 [2023-11-17 15:41:53,649 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1018 transitions. [2023-11-17 15:41:53,649 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1018 transitions. [2023-11-17 15:41:53,649 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:53,649 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1018 transitions. [2023-11-17 15:41:53,651 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 145.42857142857142) internal successors, (1018), 7 states have internal predecessors, (1018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:53,653 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 409.0) internal successors, (3272), 8 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:53,654 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 409.0) internal successors, (3272), 8 states have internal predecessors, (3272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:53,654 INFO L175 Difference]: Start difference. First operand has 72 places, 51 transitions, 337 flow. Second operand 7 states and 1018 transitions. [2023-11-17 15:41:53,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 77 transitions, 612 flow [2023-11-17 15:41:53,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 77 transitions, 551 flow, removed 6 selfloop flow, removed 8 redundant places. [2023-11-17 15:41:53,656 INFO L231 Difference]: Finished difference. Result has 71 places, 44 transitions, 293 flow [2023-11-17 15:41:53,656 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=293, PETRI_PLACES=71, PETRI_TRANSITIONS=44} [2023-11-17 15:41:53,657 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 39 predicate places. [2023-11-17 15:41:53,657 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 44 transitions, 293 flow [2023-11-17 15:41:53,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 142.0) internal successors, (710), 5 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:53,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 15:41:53,657 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] [2023-11-17 15:41:53,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 15:41:53,657 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 15:41:53,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 15:41:53,658 INFO L85 PathProgramCache]: Analyzing trace with hash -766108397, now seen corresponding path program 1 times [2023-11-17 15:41:53,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 15:41:53,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240545080] [2023-11-17 15:41:53,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 15:41:53,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 15:41:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 15:41:53,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-17 15:41:53,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 15:41:53,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240545080] [2023-11-17 15:41:53,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240545080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 15:41:53,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 15:41:53,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 15:41:53,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800366695] [2023-11-17 15:41:53,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 15:41:53,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 15:41:53,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 15:41:53,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 15:41:53,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-17 15:41:53,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 148 out of 409 [2023-11-17 15:41:53,814 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 44 transitions, 293 flow. Second operand has 5 states, 5 states have (on average 152.4) internal successors, (762), 5 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:53,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 15:41:53,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 148 of 409 [2023-11-17 15:41:53,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 15:41:53,862 INFO L124 PetriNetUnfolderBase]: 25/100 cut-off events. [2023-11-17 15:41:53,862 INFO L125 PetriNetUnfolderBase]: For 185/185 co-relation queries the response was YES. [2023-11-17 15:41:53,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383 conditions, 100 events. 25/100 cut-off events. For 185/185 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 300 event pairs, 4 based on Foata normal form. 15/115 useless extension candidates. Maximal degree in co-relation 368. Up to 88 conditions per place. [2023-11-17 15:41:53,863 INFO L140 encePairwiseOnDemand]: 406/409 looper letters, 0 selfloop transitions, 0 changer transitions 48/48 dead transitions. [2023-11-17 15:41:53,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 48 transitions, 394 flow [2023-11-17 15:41:53,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-17 15:41:53,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-17 15:41:53,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2023-11-17 15:41:53,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38141809290953543 [2023-11-17 15:41:53,865 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2023-11-17 15:41:53,865 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2023-11-17 15:41:53,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 15:41:53,865 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2023-11-17 15:41:53,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:53,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 409.0) internal successors, (2045), 5 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:53,868 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 409.0) internal successors, (2045), 5 states have internal predecessors, (2045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:53,868 INFO L175 Difference]: Start difference. First operand has 71 places, 44 transitions, 293 flow. Second operand 4 states and 624 transitions. [2023-11-17 15:41:53,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 48 transitions, 394 flow [2023-11-17 15:41:53,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 48 transitions, 332 flow, removed 2 selfloop flow, removed 12 redundant places. [2023-11-17 15:41:53,869 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-11-17 15:41:53,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=409, PETRI_DIFFERENCE_MINUEND_FLOW=195, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2023-11-17 15:41:53,870 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 26 predicate places. [2023-11-17 15:41:53,870 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-11-17 15:41:53,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 152.4) internal successors, (762), 5 states have internal predecessors, (762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 15:41:53,872 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-11-17 15:41:53,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-11-17 15:41:53,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-11-17 15:41:53,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-11-17 15:41:53,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-11-17 15:41:53,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-11-17 15:41:53,873 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-17 15:41:53,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 15:41:53,873 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 15:41:53,876 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 15:41:53,877 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 15:41:53,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 03:41:53 BasicIcfg [2023-11-17 15:41:53,879 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 15:41:53,879 INFO L158 Benchmark]: Toolchain (without parser) took 8493.84ms. Allocated memory was 184.5MB in the beginning and 295.7MB in the end (delta: 111.1MB). Free memory was 148.4MB in the beginning and 235.8MB in the end (delta: -87.3MB). Peak memory consumption was 24.8MB. Max. memory is 8.0GB. [2023-11-17 15:41:53,879 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory is still 141.7MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:41:53,879 INFO L158 Benchmark]: CACSL2BoogieTranslator took 350.78ms. Allocated memory is still 184.5MB. Free memory was 148.0MB in the beginning and 128.1MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-17 15:41:53,879 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.33ms. Allocated memory is still 184.5MB. Free memory was 128.1MB in the beginning and 125.4MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 15:41:53,880 INFO L158 Benchmark]: Boogie Preprocessor took 21.01ms. Allocated memory is still 184.5MB. Free memory was 125.4MB in the beginning and 123.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-17 15:41:53,880 INFO L158 Benchmark]: RCFGBuilder took 371.55ms. Allocated memory is still 184.5MB. Free memory was 123.9MB in the beginning and 102.3MB in the end (delta: 21.6MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2023-11-17 15:41:53,880 INFO L158 Benchmark]: TraceAbstraction took 7689.14ms. Allocated memory was 184.5MB in the beginning and 295.7MB in the end (delta: 111.1MB). Free memory was 101.2MB in the beginning and 235.8MB in the end (delta: -134.5MB). There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 15:41:53,881 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 184.5MB. Free memory is still 141.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 350.78ms. Allocated memory is still 184.5MB. Free memory was 148.0MB in the beginning and 128.1MB in the end (delta: 19.9MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.33ms. Allocated memory is still 184.5MB. Free memory was 128.1MB in the beginning and 125.4MB in the end (delta: 2.7MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.01ms. Allocated memory is still 184.5MB. Free memory was 125.4MB in the beginning and 123.9MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 371.55ms. Allocated memory is still 184.5MB. Free memory was 123.9MB in the beginning and 102.3MB in the end (delta: 21.6MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 7689.14ms. Allocated memory was 184.5MB in the beginning and 295.7MB in the end (delta: 111.1MB). Free memory was 101.2MB in the beginning and 235.8MB in the end (delta: -134.5MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 185 PlacesBefore, 32 PlacesAfterwards, 189 TransitionsBefore, 32 TransitionsAfterwards, 10260 CoEnabledTransitionPairs, 17 FixpointIterations, 40 TrivialSequentialCompositions, 132 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 42 ConcurrentYvCompositions, 4 ChoiceCompositions, 218 TotalNumberOfCompositions, 21386 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11914, independent: 11216, independent conditional: 0, independent unconditional: 11216, dependent: 698, dependent conditional: 0, dependent unconditional: 698, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 7545, independent: 7461, independent conditional: 0, independent unconditional: 7461, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 7545, independent: 7264, independent conditional: 0, independent unconditional: 7264, dependent: 281, dependent conditional: 0, dependent unconditional: 281, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 281, independent: 197, independent conditional: 0, independent unconditional: 197, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 280, independent: 147, independent conditional: 0, independent unconditional: 147, dependent: 133, dependent conditional: 0, dependent unconditional: 133, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 11914, independent: 3755, independent conditional: 0, independent unconditional: 3755, dependent: 614, dependent conditional: 0, dependent unconditional: 614, unknown: 7545, unknown conditional: 0, unknown unconditional: 7545] , Statistics on independence cache: Total cache size (in pairs): 251, Positive cache size: 217, Positive conditional cache size: 0, Positive unconditional cache size: 217, Negative cache size: 34, Negative conditional cache size: 0, Negative unconditional cache size: 34, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 269 locations, 7 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: 7.6s, OverallIterations: 12, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 442 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 442 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 35 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1427 IncrementalHoareTripleChecker+Invalid, 1462 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 35 mSolverCounterUnsat, 0 mSDtfsCounter, 1427 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=337occurred in iteration=10, InterpolantAutomatonStates: 82, 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 140 ConstructedInterpolants, 0 QuantifiedInterpolants, 686 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-17 15:41:53,894 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...