/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-SemanticLbe.epf --rcfgbuilder.only.consider.context.switches.at.boundaries.of.atomic.blocks true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.datarace-free-lbe-02cf818-m [2023-11-17 11:27:36,508 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-17 11:27:36,582 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 11:27:36,620 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-17 11:27:36,621 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-17 11:27:36,622 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-17 11:27:36,622 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-17 11:27:36,623 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-17 11:27:36,623 INFO L153 SettingsManager]: * Use SBE=true [2023-11-17 11:27:36,625 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-17 11:27:36,625 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-17 11:27:36,625 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-17 11:27:36,625 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-17 11:27:36,626 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-17 11:27:36,626 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-17 11:27:36,626 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-17 11:27:36,627 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-17 11:27:36,627 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-17 11:27:36,627 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-17 11:27:36,627 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-17 11:27:36,628 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-17 11:27:36,628 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-17 11:27:36,629 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-17 11:27:36,629 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-17 11:27:36,629 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-17 11:27:36,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:27:36,630 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-17 11:27:36,630 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-17 11:27:36,630 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-17 11:27:36,630 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-17 11:27:36,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-17 11:27:36,631 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-17 11:27:36,631 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Only consider context switches at boundaries of atomic blocks -> true [2023-11-17 11:27:36,881 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-17 11:27:36,910 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-17 11:27:36,912 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-17 11:27:36,913 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-17 11:27:36,914 INFO L274 PluginConnector]: CDTParser initialized [2023-11-17 11:27:36,915 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2023-11-17 11:27:38,054 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-17 11:27:38,358 INFO L384 CDTParser]: Found 1 translation units. [2023-11-17 11:27:38,367 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2023-11-17 11:27:38,388 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f3bc5cad/084d62e653744b0e99d3156ad7cf3774/FLAG7bf792a8c [2023-11-17 11:27:38,399 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f3bc5cad/084d62e653744b0e99d3156ad7cf3774 [2023-11-17 11:27:38,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-17 11:27:38,403 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-17 11:27:38,404 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-17 11:27:38,404 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-17 11:27:38,408 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-17 11:27:38,409 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:27:38" (1/1) ... [2023-11-17 11:27:38,410 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3381d029 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:38, skipping insertion in model container [2023-11-17 11:27:38,410 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.11 11:27:38" (1/1) ... [2023-11-17 11:27:38,458 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-17 11:27:38,628 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i[987,1000] [2023-11-17 11:27:38,883 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:27:38,895 INFO L202 MainTranslator]: Completed pre-run [2023-11-17 11:27:38,906 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i[987,1000] [2023-11-17 11:27:38,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-17 11:27:38,990 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:27:38,990 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-17 11:27:38,997 INFO L206 MainTranslator]: Completed translation [2023-11-17 11:27:38,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:38 WrapperNode [2023-11-17 11:27:38,998 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-17 11:27:38,999 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-17 11:27:38,999 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-17 11:27:38,999 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-17 11:27:39,005 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:38" (1/1) ... [2023-11-17 11:27:39,043 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:38" (1/1) ... [2023-11-17 11:27:39,088 INFO L138 Inliner]: procedures = 175, calls = 48, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 208 [2023-11-17 11:27:39,088 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-17 11:27:39,090 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-17 11:27:39,090 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-17 11:27:39,090 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-17 11:27:39,099 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:38" (1/1) ... [2023-11-17 11:27:39,099 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:38" (1/1) ... [2023-11-17 11:27:39,109 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:38" (1/1) ... [2023-11-17 11:27:39,109 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:38" (1/1) ... [2023-11-17 11:27:39,126 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:38" (1/1) ... [2023-11-17 11:27:39,127 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:38" (1/1) ... [2023-11-17 11:27:39,130 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:38" (1/1) ... [2023-11-17 11:27:39,132 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:38" (1/1) ... [2023-11-17 11:27:39,136 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-17 11:27:39,153 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-17 11:27:39,153 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-17 11:27:39,153 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-17 11:27:39,154 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:38" (1/1) ... [2023-11-17 11:27:39,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-17 11:27:39,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-17 11:27:39,183 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 11:27:39,208 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 11:27:39,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-17 11:27:39,219 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-17 11:27:39,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-17 11:27:39,219 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-17 11:27:39,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-17 11:27:39,219 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-17 11:27:39,220 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-17 11:27:39,220 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-17 11:27:39,220 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-17 11:27:39,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-17 11:27:39,221 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-17 11:27:39,221 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-17 11:27:39,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-17 11:27:39,222 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 11:27:39,423 INFO L239 CfgBuilder]: Building ICFG [2023-11-17 11:27:39,425 INFO L265 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-17 11:27:39,888 INFO L280 CfgBuilder]: Performing block encoding [2023-11-17 11:27:40,175 INFO L302 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-17 11:27:40,175 INFO L307 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-17 11:27:40,176 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:27:40 BoogieIcfgContainer [2023-11-17 11:27:40,177 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-17 11:27:40,179 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-17 11:27:40,179 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-17 11:27:40,182 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-17 11:27:40,182 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.11 11:27:38" (1/3) ... [2023-11-17 11:27:40,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8dea907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:27:40, skipping insertion in model container [2023-11-17 11:27:40,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.11 11:27:38" (2/3) ... [2023-11-17 11:27:40,183 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8dea907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.11 11:27:40, skipping insertion in model container [2023-11-17 11:27:40,183 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.11 11:27:40" (3/3) ... [2023-11-17 11:27:40,184 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_tso.i [2023-11-17 11:27:40,201 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-17 11:27:40,201 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-11-17 11:27:40,201 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-17 11:27:40,247 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-17 11:27:40,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 35 transitions, 78 flow [2023-11-17 11:27:40,314 INFO L124 PetriNetUnfolderBase]: 2/33 cut-off events. [2023-11-17 11:27:40,315 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:27:40,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 33 events. 2/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-11-17 11:27:40,322 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 35 transitions, 78 flow [2023-11-17 11:27:40,325 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 33 transitions, 72 flow [2023-11-17 11:27:40,328 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-17 11:27:40,346 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 38 places, 33 transitions, 72 flow [2023-11-17 11:27:40,350 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 38 places, 33 transitions, 72 flow [2023-11-17 11:27:40,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 33 transitions, 72 flow [2023-11-17 11:27:40,366 INFO L124 PetriNetUnfolderBase]: 2/33 cut-off events. [2023-11-17 11:27:40,367 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:27:40,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 33 events. 2/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 60 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2023-11-17 11:27:40,368 INFO L119 LiptonReduction]: Number of co-enabled transitions 578 [2023-11-17 11:27:42,276 INFO L134 LiptonReduction]: Checked pairs total: 2445 [2023-11-17 11:27:42,276 INFO L136 LiptonReduction]: Total number of compositions: 22 [2023-11-17 11:27:42,295 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-17 11:27:42,303 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;@6bb2465, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-17 11:27:42,303 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-11-17 11:27:42,307 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-17 11:27:42,308 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-17 11:27:42,308 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-17 11:27:42,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:42,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-17 11:27:42,309 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 11:27:42,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:42,314 INFO L85 PathProgramCache]: Analyzing trace with hash 498857265, now seen corresponding path program 1 times [2023-11-17 11:27:42,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:42,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689201261] [2023-11-17 11:27:42,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:42,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:42,737 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 11:27:42,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:42,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689201261] [2023-11-17 11:27:42,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689201261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:42,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:42,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 11:27:42,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250407488] [2023-11-17 11:27:42,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:42,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:27:42,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:42,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:27:42,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:27:42,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 57 [2023-11-17 11:27:42,781 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 11:27:42,781 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:42,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 57 [2023-11-17 11:27:42,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:43,113 INFO L124 PetriNetUnfolderBase]: 373/626 cut-off events. [2023-11-17 11:27:43,114 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-17 11:27:43,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1270 conditions, 626 events. 373/626 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2501 event pairs, 30 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 1260. Up to 554 conditions per place. [2023-11-17 11:27:43,123 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 27 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-11-17 11:27:43,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 29 transitions, 122 flow [2023-11-17 11:27:43,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:27:43,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:27:43,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 66 transitions. [2023-11-17 11:27:43,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38596491228070173 [2023-11-17 11:27:43,137 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 66 transitions. [2023-11-17 11:27:43,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 66 transitions. [2023-11-17 11:27:43,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:43,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 66 transitions. [2023-11-17 11:27:43,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:43,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 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 11:27:43,148 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 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 11:27:43,150 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 52 flow. Second operand 3 states and 66 transitions. [2023-11-17 11:27:43,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 29 transitions, 122 flow [2023-11-17 11:27:43,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:27:43,153 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 48 flow [2023-11-17 11:27:43,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-11-17 11:27:43,159 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-11-17 11:27:43,159 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 48 flow [2023-11-17 11:27:43,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 11:27:43,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:43,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-17 11:27:43,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-17 11:27:43,160 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 11:27:43,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:43,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1715293430, now seen corresponding path program 1 times [2023-11-17 11:27:43,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:43,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433161440] [2023-11-17 11:27:43,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:43,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:43,284 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 11:27:43,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:43,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433161440] [2023-11-17 11:27:43,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433161440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:43,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:43,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 11:27:43,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032053638] [2023-11-17 11:27:43,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:43,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:27:43,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:43,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:27:43,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:27:43,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 57 [2023-11-17 11:27:43,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 11:27:43,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:43,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 57 [2023-11-17 11:27:43,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:43,466 INFO L124 PetriNetUnfolderBase]: 324/547 cut-off events. [2023-11-17 11:27:43,466 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-11-17 11:27:43,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 547 events. 324/547 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2034 event pairs, 79 based on Foata normal form. 0/505 useless extension candidates. Maximal degree in co-relation 1132. Up to 396 conditions per place. [2023-11-17 11:27:43,471 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 24 selfloop transitions, 2 changer transitions 2/28 dead transitions. [2023-11-17 11:27:43,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 28 transitions, 120 flow [2023-11-17 11:27:43,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:27:43,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:27:43,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2023-11-17 11:27:43,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36257309941520466 [2023-11-17 11:27:43,473 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 62 transitions. [2023-11-17 11:27:43,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 62 transitions. [2023-11-17 11:27:43,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:43,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 62 transitions. [2023-11-17 11:27:43,478 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 11:27:43,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 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 11:27:43,480 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 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 11:27:43,480 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 48 flow. Second operand 3 states and 62 transitions. [2023-11-17 11:27:43,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 28 transitions, 120 flow [2023-11-17 11:27:43,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 116 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:27:43,481 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 44 flow [2023-11-17 11:27:43,482 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=44, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-11-17 11:27:43,482 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -2 predicate places. [2023-11-17 11:27:43,483 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 44 flow [2023-11-17 11:27:43,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 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 11:27:43,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:43,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:43,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-17 11:27:43,484 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 11:27:43,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:43,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1634481209, now seen corresponding path program 1 times [2023-11-17 11:27:43,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:43,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311688617] [2023-11-17 11:27:43,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:43,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:43,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:43,773 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 11:27:43,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:43,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311688617] [2023-11-17 11:27:43,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311688617] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:43,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:43,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-17 11:27:43,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292594171] [2023-11-17 11:27:43,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:43,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:27:43,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:43,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:27:43,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:27:43,779 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 57 [2023-11-17 11:27:43,779 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 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 11:27:43,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:43,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 57 [2023-11-17 11:27:43,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:43,918 INFO L124 PetriNetUnfolderBase]: 214/374 cut-off events. [2023-11-17 11:27:43,918 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-11-17 11:27:43,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 787 conditions, 374 events. 214/374 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1332 event pairs, 94 based on Foata normal form. 21/395 useless extension candidates. Maximal degree in co-relation 777. Up to 225 conditions per place. [2023-11-17 11:27:43,921 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 26 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-11-17 11:27:43,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 28 transitions, 124 flow [2023-11-17 11:27:43,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:27:43,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:27:43,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 62 transitions. [2023-11-17 11:27:43,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36257309941520466 [2023-11-17 11:27:43,923 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 62 transitions. [2023-11-17 11:27:43,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 62 transitions. [2023-11-17 11:27:43,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:43,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 62 transitions. [2023-11-17 11:27:43,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 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 11:27:43,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 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 11:27:43,925 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 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 11:27:43,925 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 44 flow. Second operand 3 states and 62 transitions. [2023-11-17 11:27:43,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 28 transitions, 124 flow [2023-11-17 11:27:43,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 28 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:27:43,927 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 48 flow [2023-11-17 11:27:43,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-11-17 11:27:43,929 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -2 predicate places. [2023-11-17 11:27:43,929 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 48 flow [2023-11-17 11:27:43,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 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 11:27:43,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:43,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:43,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-17 11:27:43,930 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 11:27:43,931 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:43,931 INFO L85 PathProgramCache]: Analyzing trace with hash -116050240, now seen corresponding path program 1 times [2023-11-17 11:27:43,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:43,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982084039] [2023-11-17 11:27:43,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:43,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:43,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:44,539 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 11:27:44,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:44,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982084039] [2023-11-17 11:27:44,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982084039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:44,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:44,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:27:44,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073029514] [2023-11-17 11:27:44,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:44,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-17 11:27:44,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:44,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-17 11:27:44,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-17 11:27:44,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2023-11-17 11:27:44,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 48 flow. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 11:27:44,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:44,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2023-11-17 11:27:44,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:44,693 INFO L124 PetriNetUnfolderBase]: 199/350 cut-off events. [2023-11-17 11:27:44,693 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-11-17 11:27:44,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 777 conditions, 350 events. 199/350 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1141 event pairs, 83 based on Foata normal form. 9/359 useless extension candidates. Maximal degree in co-relation 766. Up to 210 conditions per place. [2023-11-17 11:27:44,696 INFO L140 encePairwiseOnDemand]: 54/57 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-11-17 11:27:44,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 25 transitions, 115 flow [2023-11-17 11:27:44,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:27:44,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:27:44,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2023-11-17 11:27:44,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32748538011695905 [2023-11-17 11:27:44,699 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 56 transitions. [2023-11-17 11:27:44,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 56 transitions. [2023-11-17 11:27:44,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:44,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 56 transitions. [2023-11-17 11:27:44,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 11:27:44,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 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 11:27:44,701 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 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 11:27:44,701 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 48 flow. Second operand 3 states and 56 transitions. [2023-11-17 11:27:44,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 25 transitions, 115 flow [2023-11-17 11:27:44,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 25 transitions, 109 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:27:44,703 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 52 flow [2023-11-17 11:27:44,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-11-17 11:27:44,704 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, -1 predicate places. [2023-11-17 11:27:44,705 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 52 flow [2023-11-17 11:27:44,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 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 11:27:44,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:44,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:44,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-17 11:27:44,706 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 11:27:44,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:44,706 INFO L85 PathProgramCache]: Analyzing trace with hash 1225785850, now seen corresponding path program 1 times [2023-11-17 11:27:44,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:44,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471648031] [2023-11-17 11:27:44,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:44,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:44,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:46,165 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 11:27:46,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:46,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471648031] [2023-11-17 11:27:46,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471648031] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:46,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:46,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 11:27:46,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104874453] [2023-11-17 11:27:46,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:46,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:27:46,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:46,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:27:46,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:27:46,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2023-11-17 11:27:46,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 52 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 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 11:27:46,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:46,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2023-11-17 11:27:46,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:46,593 INFO L124 PetriNetUnfolderBase]: 244/424 cut-off events. [2023-11-17 11:27:46,596 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-17 11:27:46,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 989 conditions, 424 events. 244/424 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1503 event pairs, 33 based on Foata normal form. 1/425 useless extension candidates. Maximal degree in co-relation 977. Up to 260 conditions per place. [2023-11-17 11:27:46,600 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 41 selfloop transitions, 25 changer transitions 0/66 dead transitions. [2023-11-17 11:27:46,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 66 transitions, 299 flow [2023-11-17 11:27:46,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-17 11:27:46,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-17 11:27:46,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 167 transitions. [2023-11-17 11:27:46,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2929824561403509 [2023-11-17 11:27:46,604 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 167 transitions. [2023-11-17 11:27:46,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 167 transitions. [2023-11-17 11:27:46,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:46,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 167 transitions. [2023-11-17 11:27:46,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 16.7) internal successors, (167), 10 states have internal predecessors, (167), 0 states have call successors, (0), 0 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 11:27:46,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 57.0) internal successors, (627), 11 states have internal predecessors, (627), 0 states have call successors, (0), 0 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 11:27:46,609 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 57.0) internal successors, (627), 11 states have internal predecessors, (627), 0 states have call successors, (0), 0 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 11:27:46,609 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 52 flow. Second operand 10 states and 167 transitions. [2023-11-17 11:27:46,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 66 transitions, 299 flow [2023-11-17 11:27:46,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 66 transitions, 287 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-17 11:27:46,611 INFO L231 Difference]: Finished difference. Result has 38 places, 42 transitions, 206 flow [2023-11-17 11:27:46,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=206, PETRI_PLACES=38, PETRI_TRANSITIONS=42} [2023-11-17 11:27:46,613 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 10 predicate places. [2023-11-17 11:27:46,614 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 42 transitions, 206 flow [2023-11-17 11:27:46,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 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 11:27:46,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:46,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:46,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-17 11:27:46,614 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 11:27:46,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:46,615 INFO L85 PathProgramCache]: Analyzing trace with hash 216975790, now seen corresponding path program 2 times [2023-11-17 11:27:46,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:46,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348769911] [2023-11-17 11:27:46,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:46,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:46,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:47,328 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 11:27:47,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:47,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348769911] [2023-11-17 11:27:47,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348769911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:47,329 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:47,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:27:47,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514408065] [2023-11-17 11:27:47,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:47,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:27:47,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:47,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:27:47,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:27:47,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2023-11-17 11:27:47,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 42 transitions, 206 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 11:27:47,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:47,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2023-11-17 11:27:47,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:47,625 INFO L124 PetriNetUnfolderBase]: 306/529 cut-off events. [2023-11-17 11:27:47,626 INFO L125 PetriNetUnfolderBase]: For 497/497 co-relation queries the response was YES. [2023-11-17 11:27:47,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1851 conditions, 529 events. 306/529 cut-off events. For 497/497 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2046 event pairs, 39 based on Foata normal form. 1/530 useless extension candidates. Maximal degree in co-relation 1835. Up to 325 conditions per place. [2023-11-17 11:27:47,631 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 57 selfloop transitions, 22 changer transitions 0/79 dead transitions. [2023-11-17 11:27:47,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 79 transitions, 554 flow [2023-11-17 11:27:47,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:27:47,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:27:47,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 123 transitions. [2023-11-17 11:27:47,632 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3082706766917293 [2023-11-17 11:27:47,633 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 123 transitions. [2023-11-17 11:27:47,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 123 transitions. [2023-11-17 11:27:47,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:47,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 123 transitions. [2023-11-17 11:27:47,634 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 17.571428571428573) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 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 11:27:47,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 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 11:27:47,635 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 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 11:27:47,636 INFO L175 Difference]: Start difference. First operand has 38 places, 42 transitions, 206 flow. Second operand 7 states and 123 transitions. [2023-11-17 11:27:47,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 79 transitions, 554 flow [2023-11-17 11:27:47,643 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 79 transitions, 547 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-17 11:27:47,645 INFO L231 Difference]: Finished difference. Result has 45 places, 51 transitions, 323 flow [2023-11-17 11:27:47,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=323, PETRI_PLACES=45, PETRI_TRANSITIONS=51} [2023-11-17 11:27:47,647 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 17 predicate places. [2023-11-17 11:27:47,648 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 51 transitions, 323 flow [2023-11-17 11:27:47,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 11:27:47,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:47,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:47,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-17 11:27:47,648 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 11:27:47,649 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:47,649 INFO L85 PathProgramCache]: Analyzing trace with hash 196208890, now seen corresponding path program 3 times [2023-11-17 11:27:47,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:47,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021776688] [2023-11-17 11:27:47,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:47,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:48,622 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 11:27:48,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:48,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021776688] [2023-11-17 11:27:48,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021776688] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:48,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:48,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 11:27:48,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410851462] [2023-11-17 11:27:48,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:48,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:27:48,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:48,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:27:48,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:27:48,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2023-11-17 11:27:48,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 51 transitions, 323 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 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 11:27:48,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:48,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2023-11-17 11:27:48,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:49,033 INFO L124 PetriNetUnfolderBase]: 324/570 cut-off events. [2023-11-17 11:27:49,033 INFO L125 PetriNetUnfolderBase]: For 1023/1023 co-relation queries the response was YES. [2023-11-17 11:27:49,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2254 conditions, 570 events. 324/570 cut-off events. For 1023/1023 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2337 event pairs, 24 based on Foata normal form. 3/573 useless extension candidates. Maximal degree in co-relation 2234. Up to 423 conditions per place. [2023-11-17 11:27:49,038 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 72 selfloop transitions, 30 changer transitions 0/102 dead transitions. [2023-11-17 11:27:49,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 102 transitions, 821 flow [2023-11-17 11:27:49,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-17 11:27:49,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-17 11:27:49,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 137 transitions. [2023-11-17 11:27:49,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30043859649122806 [2023-11-17 11:27:49,040 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 137 transitions. [2023-11-17 11:27:49,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 137 transitions. [2023-11-17 11:27:49,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:49,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 137 transitions. [2023-11-17 11:27:49,041 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 17.125) internal successors, (137), 8 states have internal predecessors, (137), 0 states have call successors, (0), 0 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 11:27:49,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 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 11:27:49,042 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 57.0) internal successors, (513), 9 states have internal predecessors, (513), 0 states have call successors, (0), 0 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 11:27:49,043 INFO L175 Difference]: Start difference. First operand has 45 places, 51 transitions, 323 flow. Second operand 8 states and 137 transitions. [2023-11-17 11:27:49,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 102 transitions, 821 flow [2023-11-17 11:27:49,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 102 transitions, 803 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-11-17 11:27:49,050 INFO L231 Difference]: Finished difference. Result has 53 places, 77 transitions, 609 flow [2023-11-17 11:27:49,050 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=609, PETRI_PLACES=53, PETRI_TRANSITIONS=77} [2023-11-17 11:27:49,051 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 25 predicate places. [2023-11-17 11:27:49,051 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 77 transitions, 609 flow [2023-11-17 11:27:49,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 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 11:27:49,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:49,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:49,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-17 11:27:49,052 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 11:27:49,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:49,052 INFO L85 PathProgramCache]: Analyzing trace with hash 2030804546, now seen corresponding path program 4 times [2023-11-17 11:27:49,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:49,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629090289] [2023-11-17 11:27:49,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:49,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:50,102 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 11:27:50,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:50,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629090289] [2023-11-17 11:27:50,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629090289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:50,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:50,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 11:27:50,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132241318] [2023-11-17 11:27:50,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:50,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:27:50,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:50,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:27:50,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:27:50,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2023-11-17 11:27:50,105 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 77 transitions, 609 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 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 11:27:50,105 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:50,105 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2023-11-17 11:27:50,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:50,439 INFO L124 PetriNetUnfolderBase]: 319/562 cut-off events. [2023-11-17 11:27:50,439 INFO L125 PetriNetUnfolderBase]: For 1339/1339 co-relation queries the response was YES. [2023-11-17 11:27:50,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2490 conditions, 562 events. 319/562 cut-off events. For 1339/1339 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2317 event pairs, 39 based on Foata normal form. 3/565 useless extension candidates. Maximal degree in co-relation 2466. Up to 332 conditions per place. [2023-11-17 11:27:50,444 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 58 selfloop transitions, 38 changer transitions 0/96 dead transitions. [2023-11-17 11:27:50,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 96 transitions, 906 flow [2023-11-17 11:27:50,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:27:50,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:27:50,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 92 transitions. [2023-11-17 11:27:50,446 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32280701754385965 [2023-11-17 11:27:50,446 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 92 transitions. [2023-11-17 11:27:50,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 92 transitions. [2023-11-17 11:27:50,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:50,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 92 transitions. [2023-11-17 11:27:50,450 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 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 11:27:50,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:50,450 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:50,450 INFO L175 Difference]: Start difference. First operand has 53 places, 77 transitions, 609 flow. Second operand 5 states and 92 transitions. [2023-11-17 11:27:50,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 96 transitions, 906 flow [2023-11-17 11:27:50,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 96 transitions, 884 flow, removed 11 selfloop flow, removed 0 redundant places. [2023-11-17 11:27:50,459 INFO L231 Difference]: Finished difference. Result has 59 places, 81 transitions, 737 flow [2023-11-17 11:27:50,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=591, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=737, PETRI_PLACES=59, PETRI_TRANSITIONS=81} [2023-11-17 11:27:50,461 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 31 predicate places. [2023-11-17 11:27:50,461 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 81 transitions, 737 flow [2023-11-17 11:27:50,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 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 11:27:50,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:50,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:50,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-17 11:27:50,462 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 11:27:50,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:50,466 INFO L85 PathProgramCache]: Analyzing trace with hash 2044446696, now seen corresponding path program 5 times [2023-11-17 11:27:50,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:50,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560502868] [2023-11-17 11:27:50,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:50,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:50,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:51,980 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 11:27:51,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:51,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560502868] [2023-11-17 11:27:51,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560502868] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:51,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:51,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-17 11:27:51,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809712789] [2023-11-17 11:27:51,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:51,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-17 11:27:51,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:51,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-17 11:27:51,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-17 11:27:51,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2023-11-17 11:27:51,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 81 transitions, 737 flow. Second operand has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 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 11:27:51,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:51,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2023-11-17 11:27:51,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:52,416 INFO L124 PetriNetUnfolderBase]: 419/730 cut-off events. [2023-11-17 11:27:52,416 INFO L125 PetriNetUnfolderBase]: For 2113/2113 co-relation queries the response was YES. [2023-11-17 11:27:52,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3392 conditions, 730 events. 419/730 cut-off events. For 2113/2113 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3228 event pairs, 40 based on Foata normal form. 6/736 useless extension candidates. Maximal degree in co-relation 3364. Up to 502 conditions per place. [2023-11-17 11:27:52,423 INFO L140 encePairwiseOnDemand]: 46/57 looper letters, 96 selfloop transitions, 41 changer transitions 0/137 dead transitions. [2023-11-17 11:27:52,424 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 137 transitions, 1411 flow [2023-11-17 11:27:52,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:27:52,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:27:52,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2023-11-17 11:27:52,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3233082706766917 [2023-11-17 11:27:52,425 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 129 transitions. [2023-11-17 11:27:52,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 129 transitions. [2023-11-17 11:27:52,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:52,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 129 transitions. [2023-11-17 11:27:52,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 18.428571428571427) internal successors, (129), 7 states have internal predecessors, (129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:52,427 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 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 11:27:52,428 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 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 11:27:52,428 INFO L175 Difference]: Start difference. First operand has 59 places, 81 transitions, 737 flow. Second operand 7 states and 129 transitions. [2023-11-17 11:27:52,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 137 transitions, 1411 flow [2023-11-17 11:27:52,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 137 transitions, 1331 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-17 11:27:52,438 INFO L231 Difference]: Finished difference. Result has 66 places, 102 transitions, 1015 flow [2023-11-17 11:27:52,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1015, PETRI_PLACES=66, PETRI_TRANSITIONS=102} [2023-11-17 11:27:52,440 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 38 predicate places. [2023-11-17 11:27:52,440 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 102 transitions, 1015 flow [2023-11-17 11:27:52,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.625) internal successors, (93), 8 states have internal predecessors, (93), 0 states have call successors, (0), 0 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 11:27:52,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:52,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:52,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-17 11:27:52,443 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 11:27:52,444 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:52,444 INFO L85 PathProgramCache]: Analyzing trace with hash 615066298, now seen corresponding path program 6 times [2023-11-17 11:27:52,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:52,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299664163] [2023-11-17 11:27:52,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:52,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:53,062 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 11:27:53,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:53,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299664163] [2023-11-17 11:27:53,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299664163] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:53,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:53,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:27:53,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858414520] [2023-11-17 11:27:53,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:53,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-17 11:27:53,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:53,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-17 11:27:53,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-17 11:27:53,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2023-11-17 11:27:53,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 102 transitions, 1015 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 11:27:53,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:53,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2023-11-17 11:27:53,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:53,373 INFO L124 PetriNetUnfolderBase]: 441/769 cut-off events. [2023-11-17 11:27:53,373 INFO L125 PetriNetUnfolderBase]: For 2924/2924 co-relation queries the response was YES. [2023-11-17 11:27:53,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3958 conditions, 769 events. 441/769 cut-off events. For 2924/2924 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3439 event pairs, 46 based on Foata normal form. 4/773 useless extension candidates. Maximal degree in co-relation 3926. Up to 428 conditions per place. [2023-11-17 11:27:53,382 INFO L140 encePairwiseOnDemand]: 48/57 looper letters, 62 selfloop transitions, 55 changer transitions 0/117 dead transitions. [2023-11-17 11:27:53,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 117 transitions, 1351 flow [2023-11-17 11:27:53,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:27:53,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:27:53,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 88 transitions. [2023-11-17 11:27:53,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3087719298245614 [2023-11-17 11:27:53,384 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 88 transitions. [2023-11-17 11:27:53,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 88 transitions. [2023-11-17 11:27:53,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:53,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 88 transitions. [2023-11-17 11:27:53,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 17.6) internal successors, (88), 5 states have internal predecessors, (88), 0 states have call successors, (0), 0 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 11:27:53,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:53,386 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:53,386 INFO L175 Difference]: Start difference. First operand has 66 places, 102 transitions, 1015 flow. Second operand 5 states and 88 transitions. [2023-11-17 11:27:53,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 117 transitions, 1351 flow [2023-11-17 11:27:53,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 117 transitions, 1295 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-11-17 11:27:53,406 INFO L231 Difference]: Finished difference. Result has 69 places, 108 transitions, 1234 flow [2023-11-17 11:27:53,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=959, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1234, PETRI_PLACES=69, PETRI_TRANSITIONS=108} [2023-11-17 11:27:53,408 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 41 predicate places. [2023-11-17 11:27:53,408 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 108 transitions, 1234 flow [2023-11-17 11:27:53,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 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 11:27:53,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:53,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:53,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-17 11:27:53,409 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 11:27:53,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:53,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1065196197, now seen corresponding path program 1 times [2023-11-17 11:27:53,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:53,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139619710] [2023-11-17 11:27:53,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:53,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:53,599 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 11:27:53,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:53,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139619710] [2023-11-17 11:27:53,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139619710] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:53,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:53,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-17 11:27:53,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771967298] [2023-11-17 11:27:53,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:53,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-17 11:27:53,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:53,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-17 11:27:53,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-17 11:27:53,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 57 [2023-11-17 11:27:53,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 108 transitions, 1234 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 11:27:53,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:53,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 57 [2023-11-17 11:27:53,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:53,733 INFO L124 PetriNetUnfolderBase]: 125/277 cut-off events. [2023-11-17 11:27:53,733 INFO L125 PetriNetUnfolderBase]: For 1581/1581 co-relation queries the response was YES. [2023-11-17 11:27:53,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1584 conditions, 277 events. 125/277 cut-off events. For 1581/1581 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1101 event pairs, 12 based on Foata normal form. 70/347 useless extension candidates. Maximal degree in co-relation 1550. Up to 140 conditions per place. [2023-11-17 11:27:53,736 INFO L140 encePairwiseOnDemand]: 53/57 looper letters, 92 selfloop transitions, 3 changer transitions 0/95 dead transitions. [2023-11-17 11:27:53,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 95 transitions, 1224 flow [2023-11-17 11:27:53,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-17 11:27:53,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-17 11:27:53,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2023-11-17 11:27:53,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32748538011695905 [2023-11-17 11:27:53,738 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 56 transitions. [2023-11-17 11:27:53,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 56 transitions. [2023-11-17 11:27:53,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:53,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 56 transitions. [2023-11-17 11:27:53,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 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 11:27:53,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 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 11:27:53,739 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 57.0) internal successors, (228), 4 states have internal predecessors, (228), 0 states have call successors, (0), 0 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 11:27:53,739 INFO L175 Difference]: Start difference. First operand has 69 places, 108 transitions, 1234 flow. Second operand 3 states and 56 transitions. [2023-11-17 11:27:53,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 95 transitions, 1224 flow [2023-11-17 11:27:53,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 95 transitions, 1138 flow, removed 17 selfloop flow, removed 7 redundant places. [2023-11-17 11:27:53,747 INFO L231 Difference]: Finished difference. Result has 64 places, 79 transitions, 818 flow [2023-11-17 11:27:53,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=818, PETRI_PLACES=64, PETRI_TRANSITIONS=79} [2023-11-17 11:27:53,748 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 36 predicate places. [2023-11-17 11:27:53,748 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 79 transitions, 818 flow [2023-11-17 11:27:53,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 0 states have call successors, (0), 0 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 11:27:53,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:53,748 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:53,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-17 11:27:53,749 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 11:27:53,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:53,749 INFO L85 PathProgramCache]: Analyzing trace with hash -617811528, now seen corresponding path program 1 times [2023-11-17 11:27:53,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:53,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899991471] [2023-11-17 11:27:53,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:53,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:53,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:55,081 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 11:27:55,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:55,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899991471] [2023-11-17 11:27:55,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899991471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:55,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:55,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-17 11:27:55,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781031733] [2023-11-17 11:27:55,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:55,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-17 11:27:55,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:55,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-17 11:27:55,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2023-11-17 11:27:55,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2023-11-17 11:27:55,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 79 transitions, 818 flow. Second operand has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:55,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:55,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2023-11-17 11:27:55,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:55,365 INFO L124 PetriNetUnfolderBase]: 124/275 cut-off events. [2023-11-17 11:27:55,365 INFO L125 PetriNetUnfolderBase]: For 1040/1040 co-relation queries the response was YES. [2023-11-17 11:27:55,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1523 conditions, 275 events. 124/275 cut-off events. For 1040/1040 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1081 event pairs, 19 based on Foata normal form. 1/276 useless extension candidates. Maximal degree in co-relation 1492. Up to 124 conditions per place. [2023-11-17 11:27:55,369 INFO L140 encePairwiseOnDemand]: 52/57 looper letters, 66 selfloop transitions, 25 changer transitions 0/91 dead transitions. [2023-11-17 11:27:55,369 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 91 transitions, 1091 flow [2023-11-17 11:27:55,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:27:55,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:27:55,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 99 transitions. [2023-11-17 11:27:55,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2894736842105263 [2023-11-17 11:27:55,371 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 99 transitions. [2023-11-17 11:27:55,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 99 transitions. [2023-11-17 11:27:55,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:55,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 99 transitions. [2023-11-17 11:27:55,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 0 states have call successors, (0), 0 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 11:27:55,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 57.0) internal successors, (399), 7 states have internal predecessors, (399), 0 states have call successors, (0), 0 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 11:27:55,372 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 57.0) internal successors, (399), 7 states have internal predecessors, (399), 0 states have call successors, (0), 0 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 11:27:55,372 INFO L175 Difference]: Start difference. First operand has 64 places, 79 transitions, 818 flow. Second operand 6 states and 99 transitions. [2023-11-17 11:27:55,372 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 91 transitions, 1091 flow [2023-11-17 11:27:55,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 91 transitions, 1084 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-17 11:27:55,380 INFO L231 Difference]: Finished difference. Result has 69 places, 80 transitions, 902 flow [2023-11-17 11:27:55,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=813, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=902, PETRI_PLACES=69, PETRI_TRANSITIONS=80} [2023-11-17 11:27:55,381 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 41 predicate places. [2023-11-17 11:27:55,381 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 80 transitions, 902 flow [2023-11-17 11:27:55,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.666666666666666) internal successors, (105), 9 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:55,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:55,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:55,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-17 11:27:55,381 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 11:27:55,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:55,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1515412521, now seen corresponding path program 1 times [2023-11-17 11:27:55,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:55,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146809648] [2023-11-17 11:27:55,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:55,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:55,948 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 11:27:55,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:55,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146809648] [2023-11-17 11:27:55,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146809648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:55,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:55,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:27:55,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28232570] [2023-11-17 11:27:55,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:55,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:27:55,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:55,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:27:55,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:27:55,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2023-11-17 11:27:55,951 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 80 transitions, 902 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:55,951 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:55,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2023-11-17 11:27:55,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:56,201 INFO L124 PetriNetUnfolderBase]: 143/326 cut-off events. [2023-11-17 11:27:56,202 INFO L125 PetriNetUnfolderBase]: For 1674/1674 co-relation queries the response was YES. [2023-11-17 11:27:56,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1841 conditions, 326 events. 143/326 cut-off events. For 1674/1674 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1410 event pairs, 28 based on Foata normal form. 5/331 useless extension candidates. Maximal degree in co-relation 1808. Up to 195 conditions per place. [2023-11-17 11:27:56,205 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 57 selfloop transitions, 20 changer transitions 24/101 dead transitions. [2023-11-17 11:27:56,205 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 101 transitions, 1249 flow [2023-11-17 11:27:56,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-17 11:27:56,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-17 11:27:56,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 91 transitions. [2023-11-17 11:27:56,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3192982456140351 [2023-11-17 11:27:56,206 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 91 transitions. [2023-11-17 11:27:56,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 91 transitions. [2023-11-17 11:27:56,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:56,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 91 transitions. [2023-11-17 11:27:56,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 0 states have call successors, (0), 0 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 11:27:56,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:56,208 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 57.0) internal successors, (342), 6 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:56,208 INFO L175 Difference]: Start difference. First operand has 69 places, 80 transitions, 902 flow. Second operand 5 states and 91 transitions. [2023-11-17 11:27:56,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 101 transitions, 1249 flow [2023-11-17 11:27:56,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 101 transitions, 1215 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-17 11:27:56,216 INFO L231 Difference]: Finished difference. Result has 71 places, 69 transitions, 796 flow [2023-11-17 11:27:56,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=869, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=796, PETRI_PLACES=71, PETRI_TRANSITIONS=69} [2023-11-17 11:27:56,216 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 43 predicate places. [2023-11-17 11:27:56,216 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 69 transitions, 796 flow [2023-11-17 11:27:56,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:56,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:56,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:56,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-17 11:27:56,217 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 11:27:56,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:56,218 INFO L85 PathProgramCache]: Analyzing trace with hash -510040737, now seen corresponding path program 2 times [2023-11-17 11:27:56,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:56,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238512994] [2023-11-17 11:27:56,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:56,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:56,660 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 11:27:56,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:56,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238512994] [2023-11-17 11:27:56,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238512994] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:56,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:56,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-17 11:27:56,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298055840] [2023-11-17 11:27:56,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:56,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-17 11:27:56,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:56,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-17 11:27:56,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-17 11:27:56,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2023-11-17 11:27:56,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 69 transitions, 796 flow. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:56,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:56,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2023-11-17 11:27:56,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:56,906 INFO L124 PetriNetUnfolderBase]: 124/290 cut-off events. [2023-11-17 11:27:56,906 INFO L125 PetriNetUnfolderBase]: For 1539/1539 co-relation queries the response was YES. [2023-11-17 11:27:56,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1587 conditions, 290 events. 124/290 cut-off events. For 1539/1539 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1195 event pairs, 26 based on Foata normal form. 6/296 useless extension candidates. Maximal degree in co-relation 1553. Up to 155 conditions per place. [2023-11-17 11:27:56,909 INFO L140 encePairwiseOnDemand]: 49/57 looper letters, 48 selfloop transitions, 23 changer transitions 30/101 dead transitions. [2023-11-17 11:27:56,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 101 transitions, 1228 flow [2023-11-17 11:27:56,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-17 11:27:56,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-17 11:27:56,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2023-11-17 11:27:56,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3216374269005848 [2023-11-17 11:27:56,910 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 110 transitions. [2023-11-17 11:27:56,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 110 transitions. [2023-11-17 11:27:56,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:56,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 110 transitions. [2023-11-17 11:27:56,911 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 18.333333333333332) internal successors, (110), 6 states have internal predecessors, (110), 0 states have call successors, (0), 0 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 11:27:56,912 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 57.0) internal successors, (399), 7 states have internal predecessors, (399), 0 states have call successors, (0), 0 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 11:27:56,912 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 57.0) internal successors, (399), 7 states have internal predecessors, (399), 0 states have call successors, (0), 0 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 11:27:56,912 INFO L175 Difference]: Start difference. First operand has 71 places, 69 transitions, 796 flow. Second operand 6 states and 110 transitions. [2023-11-17 11:27:56,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 101 transitions, 1228 flow [2023-11-17 11:27:56,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 101 transitions, 1133 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-17 11:27:56,922 INFO L231 Difference]: Finished difference. Result has 71 places, 62 transitions, 713 flow [2023-11-17 11:27:56,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=704, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=713, PETRI_PLACES=71, PETRI_TRANSITIONS=62} [2023-11-17 11:27:56,923 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 43 predicate places. [2023-11-17 11:27:56,923 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 62 transitions, 713 flow [2023-11-17 11:27:56,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-17 11:27:56,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-17 11:27:56,924 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:56,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-17 11:27:56,924 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-11-17 11:27:56,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-17 11:27:56,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1485806365, now seen corresponding path program 3 times [2023-11-17 11:27:56,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-17 11:27:56,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80229848] [2023-11-17 11:27:56,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-17 11:27:56,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-17 11:27:56,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-17 11:27:57,669 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 11:27:57,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-17 11:27:57,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80229848] [2023-11-17 11:27:57,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80229848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-17 11:27:57,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-17 11:27:57,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-17 11:27:57,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929385240] [2023-11-17 11:27:57,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-17 11:27:57,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-17 11:27:57,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-17 11:27:57,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-17 11:27:57,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-17 11:27:57,671 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 57 [2023-11-17 11:27:57,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 62 transitions, 713 flow. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 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 11:27:57,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-17 11:27:57,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 57 [2023-11-17 11:27:57,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-17 11:27:57,851 INFO L124 PetriNetUnfolderBase]: 80/192 cut-off events. [2023-11-17 11:27:57,851 INFO L125 PetriNetUnfolderBase]: For 1019/1019 co-relation queries the response was YES. [2023-11-17 11:27:57,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1118 conditions, 192 events. 80/192 cut-off events. For 1019/1019 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 678 event pairs, 11 based on Foata normal form. 6/198 useless extension candidates. Maximal degree in co-relation 1094. Up to 102 conditions per place. [2023-11-17 11:27:57,852 INFO L140 encePairwiseOnDemand]: 50/57 looper letters, 0 selfloop transitions, 0 changer transitions 73/73 dead transitions. [2023-11-17 11:27:57,852 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 73 transitions, 947 flow [2023-11-17 11:27:57,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-17 11:27:57,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-17 11:27:57,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 104 transitions. [2023-11-17 11:27:57,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2606516290726817 [2023-11-17 11:27:57,854 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 104 transitions. [2023-11-17 11:27:57,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 104 transitions. [2023-11-17 11:27:57,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-17 11:27:57,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 104 transitions. [2023-11-17 11:27:57,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 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 11:27:57,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 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 11:27:57,856 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 57.0) internal successors, (456), 8 states have internal predecessors, (456), 0 states have call successors, (0), 0 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 11:27:57,856 INFO L175 Difference]: Start difference. First operand has 71 places, 62 transitions, 713 flow. Second operand 7 states and 104 transitions. [2023-11-17 11:27:57,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 73 transitions, 947 flow [2023-11-17 11:27:57,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 73 transitions, 812 flow, removed 13 selfloop flow, removed 11 redundant places. [2023-11-17 11:27:57,862 INFO L231 Difference]: Finished difference. Result has 63 places, 0 transitions, 0 flow [2023-11-17 11:27:57,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=57, PETRI_DIFFERENCE_MINUEND_FLOW=575, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=63, PETRI_TRANSITIONS=0} [2023-11-17 11:27:57,864 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 35 predicate places. [2023-11-17 11:27:57,864 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 0 transitions, 0 flow [2023-11-17 11:27:57,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 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 11:27:57,866 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-11-17 11:27:57,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-11-17 11:27:57,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-11-17 11:27:57,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-11-17 11:27:57,867 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-11-17 11:27:57,868 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-11-17 11:27:57,868 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-11-17 11:27:57,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-17 11:27:57,868 INFO L445 BasicCegarLoop]: Path program histogram: [6, 3, 1, 1, 1, 1, 1, 1] [2023-11-17 11:27:57,874 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-17 11:27:57,874 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-17 11:27:57,879 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.11 11:27:57 BasicIcfg [2023-11-17 11:27:57,880 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-17 11:27:57,880 INFO L158 Benchmark]: Toolchain (without parser) took 19477.41ms. Allocated memory was 200.3MB in the beginning and 666.9MB in the end (delta: 466.6MB). Free memory was 154.9MB in the beginning and 622.7MB in the end (delta: -467.8MB). Peak memory consumption was 385.9MB. Max. memory is 8.0GB. [2023-11-17 11:27:57,880 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 200.3MB. Free memory is still 159.0MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-17 11:27:57,881 INFO L158 Benchmark]: CACSL2BoogieTranslator took 594.40ms. Allocated memory is still 200.3MB. Free memory was 154.9MB in the beginning and 126.9MB in the end (delta: 28.0MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. [2023-11-17 11:27:57,881 INFO L158 Benchmark]: Boogie Procedure Inliner took 89.59ms. Allocated memory is still 200.3MB. Free memory was 126.9MB in the beginning and 123.5MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2023-11-17 11:27:57,881 INFO L158 Benchmark]: Boogie Preprocessor took 45.84ms. Allocated memory is still 200.3MB. Free memory was 123.5MB in the beginning and 121.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-17 11:27:57,881 INFO L158 Benchmark]: RCFGBuilder took 1023.96ms. Allocated memory is still 200.3MB. Free memory was 121.0MB in the beginning and 96.2MB in the end (delta: 24.8MB). Peak memory consumption was 28.4MB. Max. memory is 8.0GB. [2023-11-17 11:27:57,882 INFO L158 Benchmark]: TraceAbstraction took 17700.64ms. Allocated memory was 200.3MB in the beginning and 666.9MB in the end (delta: 466.6MB). Free memory was 95.7MB in the beginning and 622.7MB in the end (delta: -527.0MB). Peak memory consumption was 327.1MB. Max. memory is 8.0GB. [2023-11-17 11:27:57,883 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 200.3MB. Free memory is still 159.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 594.40ms. Allocated memory is still 200.3MB. Free memory was 154.9MB in the beginning and 126.9MB in the end (delta: 28.0MB). Peak memory consumption was 28.3MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 89.59ms. Allocated memory is still 200.3MB. Free memory was 126.9MB in the beginning and 123.5MB in the end (delta: 3.5MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 45.84ms. Allocated memory is still 200.3MB. Free memory was 123.5MB in the beginning and 121.0MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 1023.96ms. Allocated memory is still 200.3MB. Free memory was 121.0MB in the beginning and 96.2MB in the end (delta: 24.8MB). Peak memory consumption was 28.4MB. Max. memory is 8.0GB. * TraceAbstraction took 17700.64ms. Allocated memory was 200.3MB in the beginning and 666.9MB in the end (delta: 466.6MB). Free memory was 95.7MB in the beginning and 622.7MB in the end (delta: -527.0MB). Peak memory consumption was 327.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 38 PlacesBefore, 28 PlacesAfterwards, 33 TransitionsBefore, 23 TransitionsAfterwards, 578 CoEnabledTransitionPairs, 5 FixpointIterations, 0 TrivialSequentialCompositions, 17 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 22 TotalNumberOfCompositions, 2445 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 777, independent: 635, independent conditional: 0, independent unconditional: 635, dependent: 142, dependent conditional: 0, dependent unconditional: 142, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 421, independent: 384, independent conditional: 0, independent unconditional: 384, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 421, independent: 320, independent conditional: 0, independent unconditional: 320, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 101, independent: 64, independent conditional: 0, independent unconditional: 64, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 687, independent: 82, independent conditional: 0, independent unconditional: 82, dependent: 605, dependent conditional: 0, dependent unconditional: 605, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 777, independent: 251, independent conditional: 0, independent unconditional: 251, dependent: 105, dependent conditional: 0, dependent unconditional: 105, unknown: 421, unknown conditional: 0, unknown unconditional: 421] , Statistics on independence cache: Total cache size (in pairs): 71, Positive cache size: 47, Positive conditional cache size: 0, Positive unconditional cache size: 47, Negative cache size: 24, Negative conditional cache size: 0, Negative unconditional cache size: 24, 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 5 procedures, 55 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: 17.6s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 261 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 261 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 182 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1236 IncrementalHoareTripleChecker+Invalid, 1418 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 182 mSolverCounterUnsat, 0 mSDtfsCounter, 1236 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1234occurred in iteration=10, InterpolantAutomatonStates: 81, 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, 0.5s SatisfiabilityAnalysisTime, 10.3s InterpolantComputationTime, 183 NumberOfCodeBlocks, 183 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 168 ConstructedInterpolants, 0 QuantifiedInterpolants, 2709 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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 11:27:57,907 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...