/usr/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-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-wip.dk.fix-rcfgbuilder-lbe-0ccecc1-m [2023-11-10 11:54:26,364 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-10 11:54:26,402 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-NoLbe.epf [2023-11-10 11:54:26,425 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-10 11:54:26,426 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-10 11:54:26,426 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-10 11:54:26,427 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-10 11:54:26,427 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-10 11:54:26,427 INFO L153 SettingsManager]: * Use SBE=true [2023-11-10 11:54:26,427 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-10 11:54:26,428 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-10 11:54:26,428 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-10 11:54:26,428 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-10 11:54:26,428 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-10 11:54:26,429 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-10 11:54:26,429 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-10 11:54:26,429 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-10 11:54:26,429 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-10 11:54:26,429 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-10 11:54:26,430 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-10 11:54:26,430 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-10 11:54:26,430 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-10 11:54:26,430 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-10 11:54:26,431 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-11-10 11:54:26,431 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-10 11:54:26,434 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 11:54:26,434 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-10 11:54:26,434 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-10 11:54:26,435 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-10 11:54:26,435 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-10 11:54:26,435 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-10 11:54:26,449 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-10 11:54:26,449 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-10 11:54:26,449 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-11-10 11:54:26,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-10 11:54:26,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-10 11:54:26,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-10 11:54:26,655 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-10 11:54:26,657 INFO L274 PluginConnector]: CDTParser initialized [2023-11-10 11:54:26,658 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i [2023-11-10 11:54:27,675 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-10 11:54:27,835 INFO L384 CDTParser]: Found 1 translation units. [2023-11-10 11:54:27,835 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i [2023-11-10 11:54:27,849 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe3f4ce89/5d7807d4147b4a0ab7478b31f5930538/FLAG6abba8d9b [2023-11-10 11:54:27,861 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe3f4ce89/5d7807d4147b4a0ab7478b31f5930538 [2023-11-10 11:54:27,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-10 11:54:27,864 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-11-10 11:54:27,865 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-10 11:54:27,865 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-10 11:54:27,868 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-10 11:54:27,868 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:54:27" (1/1) ... [2023-11-10 11:54:27,869 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52de03fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:27, skipping insertion in model container [2023-11-10 11:54:27,869 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 11:54:27" (1/1) ... [2023-11-10 11:54:27,896 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-10 11:54:28,018 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i[1096,1109] [2023-11-10 11:54:28,127 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 11:54:28,140 INFO L202 MainTranslator]: Completed pre-run [2023-11-10 11:54:28,150 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i[1096,1109] [2023-11-10 11:54:28,191 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-10 11:54:28,222 INFO L206 MainTranslator]: Completed translation [2023-11-10 11:54:28,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:28 WrapperNode [2023-11-10 11:54:28,224 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-10 11:54:28,225 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-10 11:54:28,225 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-10 11:54:28,225 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-10 11:54:28,230 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:28" (1/1) ... [2023-11-10 11:54:28,252 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:28" (1/1) ... [2023-11-10 11:54:28,270 INFO L138 Inliner]: procedures = 162, calls = 46, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 89 [2023-11-10 11:54:28,271 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-10 11:54:28,271 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-10 11:54:28,271 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-10 11:54:28,271 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-10 11:54:28,277 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:28" (1/1) ... [2023-11-10 11:54:28,279 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:28" (1/1) ... [2023-11-10 11:54:28,281 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:28" (1/1) ... [2023-11-10 11:54:28,281 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:28" (1/1) ... [2023-11-10 11:54:28,284 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:28" (1/1) ... [2023-11-10 11:54:28,286 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:28" (1/1) ... [2023-11-10 11:54:28,287 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:28" (1/1) ... [2023-11-10 11:54:28,288 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:28" (1/1) ... [2023-11-10 11:54:28,290 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-10 11:54:28,290 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-10 11:54:28,290 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-10 11:54:28,290 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-10 11:54:28,293 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:28" (1/1) ... [2023-11-10 11:54:28,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-10 11:54:28,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-10 11:54:28,326 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) [2023-11-10 11:54:28,339 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 [2023-11-10 11:54:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-10 11:54:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-10 11:54:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-10 11:54:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-10 11:54:28,364 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-10 11:54:28,364 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-10 11:54:28,364 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-10 11:54:28,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-10 11:54:28,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-10 11:54:28,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-10 11:54:28,365 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-10 11:54:28,366 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-10 11:54:28,481 INFO L236 CfgBuilder]: Building ICFG [2023-11-10 11:54:28,483 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-10 11:54:28,643 INFO L277 CfgBuilder]: Performing block encoding [2023-11-10 11:54:28,654 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-10 11:54:28,655 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-10 11:54:28,658 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:54:28 BoogieIcfgContainer [2023-11-10 11:54:28,658 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-10 11:54:28,660 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-10 11:54:28,660 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-10 11:54:28,663 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-10 11:54:28,663 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 11:54:27" (1/3) ... [2023-11-10 11:54:28,664 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b81f803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:54:28, skipping insertion in model container [2023-11-10 11:54:28,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 11:54:28" (2/3) ... [2023-11-10 11:54:28,664 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b81f803 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 11:54:28, skipping insertion in model container [2023-11-10 11:54:28,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 11:54:28" (3/3) ... [2023-11-10 11:54:28,665 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_24-multiple-protecting_true.i [2023-11-10 11:54:28,679 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-10 11:54:28,679 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-10 11:54:28,679 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-10 11:54:28,752 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-10 11:54:28,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 139 transitions, 285 flow [2023-11-10 11:54:28,834 INFO L124 PetriNetUnfolderBase]: 4/138 cut-off events. [2023-11-10 11:54:28,835 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-10 11:54:28,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 138 events. 4/138 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 115 event pairs, 0 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-11-10 11:54:28,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 139 transitions, 285 flow [2023-11-10 11:54:28,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 122 transitions, 247 flow [2023-11-10 11:54:28,851 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-10 11:54:28,855 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;@b22789, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-10 11:54:28,856 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-11-10 11:54:28,866 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-10 11:54:28,866 INFO L124 PetriNetUnfolderBase]: 0/58 cut-off events. [2023-11-10 11:54:28,866 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-10 11:54:28,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:54:28,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:54:28,872 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-10 11:54:28,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:54:28,876 INFO L85 PathProgramCache]: Analyzing trace with hash 112767419, now seen corresponding path program 1 times [2023-11-10 11:54:28,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:54:28,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532802269] [2023-11-10 11:54:28,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:54:28,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:54:28,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:54:29,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:54:29,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:54:29,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532802269] [2023-11-10 11:54:29,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532802269] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:54:29,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:54:29,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-10 11:54:29,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252118004] [2023-11-10 11:54:29,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:54:29,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-10 11:54:29,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:54:29,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-10 11:54:29,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-10 11:54:29,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 139 [2023-11-10 11:54:29,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 122 transitions, 247 flow. Second operand has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:29,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:54:29,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 139 [2023-11-10 11:54:29,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:54:29,552 INFO L124 PetriNetUnfolderBase]: 117/829 cut-off events. [2023-11-10 11:54:29,552 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-10 11:54:29,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1115 conditions, 829 events. 117/829 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4976 event pairs, 36 based on Foata normal form. 16/833 useless extension candidates. Maximal degree in co-relation 1072. Up to 128 conditions per place. [2023-11-10 11:54:29,561 INFO L140 encePairwiseOnDemand]: 117/139 looper letters, 45 selfloop transitions, 27 changer transitions 5/162 dead transitions. [2023-11-10 11:54:29,561 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 162 transitions, 481 flow [2023-11-10 11:54:29,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-10 11:54:29,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-10 11:54:29,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 951 transitions. [2023-11-10 11:54:29,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7601918465227818 [2023-11-10 11:54:29,580 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 951 transitions. [2023-11-10 11:54:29,580 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 951 transitions. [2023-11-10 11:54:29,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:54:29,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 951 transitions. [2023-11-10 11:54:29,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 105.66666666666667) internal successors, (951), 9 states have internal predecessors, (951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:29,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 139.0) internal successors, (1390), 10 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:29,596 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 139.0) internal successors, (1390), 10 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:29,597 INFO L175 Difference]: Start difference. First operand has 123 places, 122 transitions, 247 flow. Second operand 9 states and 951 transitions. [2023-11-10 11:54:29,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 162 transitions, 481 flow [2023-11-10 11:54:29,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 162 transitions, 480 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-10 11:54:29,605 INFO L231 Difference]: Finished difference. Result has 133 places, 137 transitions, 408 flow [2023-11-10 11:54:29,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=408, PETRI_PLACES=133, PETRI_TRANSITIONS=137} [2023-11-10 11:54:29,609 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 10 predicate places. [2023-11-10 11:54:29,610 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 137 transitions, 408 flow [2023-11-10 11:54:29,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:29,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:54:29,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:54:29,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-10 11:54:29,611 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-10 11:54:29,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:54:29,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1415078920, now seen corresponding path program 1 times [2023-11-10 11:54:29,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:54:29,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111473608] [2023-11-10 11:54:29,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:54:29,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:54:29,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:54:29,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:54:29,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:54:29,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111473608] [2023-11-10 11:54:29,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111473608] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:54:29,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:54:29,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 11:54:29,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32983335] [2023-11-10 11:54:29,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:54:29,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 11:54:29,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:54:29,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 11:54:29,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-10 11:54:29,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 139 [2023-11-10 11:54:29,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 137 transitions, 408 flow. Second operand has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:29,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:54:29,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 139 [2023-11-10 11:54:29,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:54:29,984 INFO L124 PetriNetUnfolderBase]: 67/530 cut-off events. [2023-11-10 11:54:29,984 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-11-10 11:54:29,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 894 conditions, 530 events. 67/530 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2466 event pairs, 28 based on Foata normal form. 13/535 useless extension candidates. Maximal degree in co-relation 833. Up to 124 conditions per place. [2023-11-10 11:54:29,986 INFO L140 encePairwiseOnDemand]: 132/139 looper letters, 43 selfloop transitions, 7 changer transitions 0/143 dead transitions. [2023-11-10 11:54:29,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 143 transitions, 486 flow [2023-11-10 11:54:29,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-10 11:54:29,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-10 11:54:29,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 517 transitions. [2023-11-10 11:54:29,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7438848920863309 [2023-11-10 11:54:29,988 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 517 transitions. [2023-11-10 11:54:29,988 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 517 transitions. [2023-11-10 11:54:29,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:54:29,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 517 transitions. [2023-11-10 11:54:29,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 103.4) internal successors, (517), 5 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:29,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:29,991 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:29,991 INFO L175 Difference]: Start difference. First operand has 133 places, 137 transitions, 408 flow. Second operand 5 states and 517 transitions. [2023-11-10 11:54:29,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 143 transitions, 486 flow [2023-11-10 11:54:29,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 143 transitions, 466 flow, removed 6 selfloop flow, removed 3 redundant places. [2023-11-10 11:54:30,000 INFO L231 Difference]: Finished difference. Result has 133 places, 130 transitions, 363 flow [2023-11-10 11:54:30,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=363, PETRI_PLACES=133, PETRI_TRANSITIONS=130} [2023-11-10 11:54:30,001 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 10 predicate places. [2023-11-10 11:54:30,001 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 130 transitions, 363 flow [2023-11-10 11:54:30,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 95.83333333333333) internal successors, (575), 6 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:30,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:54:30,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:54:30,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-10 11:54:30,003 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-10 11:54:30,004 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:54:30,005 INFO L85 PathProgramCache]: Analyzing trace with hash -220448077, now seen corresponding path program 1 times [2023-11-10 11:54:30,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:54:30,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615714504] [2023-11-10 11:54:30,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:54:30,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:54:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:54:30,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:54:30,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:54:30,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615714504] [2023-11-10 11:54:30,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615714504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:54:30,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:54:30,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 11:54:30,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585206548] [2023-11-10 11:54:30,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:54:30,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 11:54:30,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:54:30,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 11:54:30,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-10 11:54:30,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 139 [2023-11-10 11:54:30,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 130 transitions, 363 flow. Second operand has 8 states, 8 states have (on average 95.5) internal successors, (764), 8 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:30,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:54:30,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 139 [2023-11-10 11:54:30,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:54:30,398 INFO L124 PetriNetUnfolderBase]: 20/343 cut-off events. [2023-11-10 11:54:30,398 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-11-10 11:54:30,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 558 conditions, 343 events. 20/343 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1068 event pairs, 0 based on Foata normal form. 6/349 useless extension candidates. Maximal degree in co-relation 507. Up to 35 conditions per place. [2023-11-10 11:54:30,400 INFO L140 encePairwiseOnDemand]: 117/139 looper letters, 30 selfloop transitions, 25 changer transitions 11/148 dead transitions. [2023-11-10 11:54:30,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 148 transitions, 533 flow [2023-11-10 11:54:30,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-10 11:54:30,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-10 11:54:30,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1279 transitions. [2023-11-10 11:54:30,402 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.707802988378528 [2023-11-10 11:54:30,402 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1279 transitions. [2023-11-10 11:54:30,402 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1279 transitions. [2023-11-10 11:54:30,403 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:54:30,403 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1279 transitions. [2023-11-10 11:54:30,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 98.38461538461539) internal successors, (1279), 13 states have internal predecessors, (1279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:30,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:30,408 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 139.0) internal successors, (1946), 14 states have internal predecessors, (1946), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:30,408 INFO L175 Difference]: Start difference. First operand has 133 places, 130 transitions, 363 flow. Second operand 13 states and 1279 transitions. [2023-11-10 11:54:30,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 148 transitions, 533 flow [2023-11-10 11:54:30,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 148 transitions, 526 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-10 11:54:30,413 INFO L231 Difference]: Finished difference. Result has 144 places, 123 transitions, 431 flow [2023-11-10 11:54:30,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=431, PETRI_PLACES=144, PETRI_TRANSITIONS=123} [2023-11-10 11:54:30,415 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 21 predicate places. [2023-11-10 11:54:30,415 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 123 transitions, 431 flow [2023-11-10 11:54:30,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 95.5) internal successors, (764), 8 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:30,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:54:30,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:54:30,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-10 11:54:30,416 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-10 11:54:30,416 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:54:30,416 INFO L85 PathProgramCache]: Analyzing trace with hash -949614365, now seen corresponding path program 1 times [2023-11-10 11:54:30,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:54:30,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802564522] [2023-11-10 11:54:30,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:54:30,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:54:30,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:54:30,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:54:30,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:54:30,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802564522] [2023-11-10 11:54:30,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802564522] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:54:30,524 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:54:30,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-10 11:54:30,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961021253] [2023-11-10 11:54:30,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:54:30,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-10 11:54:30,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:54:30,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-10 11:54:30,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-10 11:54:30,530 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 139 [2023-11-10 11:54:30,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 123 transitions, 431 flow. Second operand has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:30,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:54:30,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 139 [2023-11-10 11:54:30,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:54:30,648 INFO L124 PetriNetUnfolderBase]: 77/539 cut-off events. [2023-11-10 11:54:30,648 INFO L125 PetriNetUnfolderBase]: For 246/246 co-relation queries the response was YES. [2023-11-10 11:54:30,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1080 conditions, 539 events. 77/539 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2498 event pairs, 21 based on Foata normal form. 6/540 useless extension candidates. Maximal degree in co-relation 1028. Up to 122 conditions per place. [2023-11-10 11:54:30,650 INFO L140 encePairwiseOnDemand]: 128/139 looper letters, 42 selfloop transitions, 19 changer transitions 10/155 dead transitions. [2023-11-10 11:54:30,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 155 transitions, 701 flow [2023-11-10 11:54:30,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-10 11:54:30,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-10 11:54:30,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 927 transitions. [2023-11-10 11:54:30,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7410071942446043 [2023-11-10 11:54:30,652 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 927 transitions. [2023-11-10 11:54:30,652 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 927 transitions. [2023-11-10 11:54:30,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:54:30,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 927 transitions. [2023-11-10 11:54:30,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 103.0) internal successors, (927), 9 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:30,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 139.0) internal successors, (1390), 10 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:30,656 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 139.0) internal successors, (1390), 10 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:30,656 INFO L175 Difference]: Start difference. First operand has 144 places, 123 transitions, 431 flow. Second operand 9 states and 927 transitions. [2023-11-10 11:54:30,656 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 155 transitions, 701 flow [2023-11-10 11:54:30,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 155 transitions, 581 flow, removed 8 selfloop flow, removed 15 redundant places. [2023-11-10 11:54:30,660 INFO L231 Difference]: Finished difference. Result has 140 places, 130 transitions, 439 flow [2023-11-10 11:54:30,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=347, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=439, PETRI_PLACES=140, PETRI_TRANSITIONS=130} [2023-11-10 11:54:30,661 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 17 predicate places. [2023-11-10 11:54:30,661 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 130 transitions, 439 flow [2023-11-10 11:54:30,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.6) internal successors, (498), 5 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:30,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:54:30,662 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:54:30,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-10 11:54:30,662 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-10 11:54:30,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:54:30,662 INFO L85 PathProgramCache]: Analyzing trace with hash 353139810, now seen corresponding path program 1 times [2023-11-10 11:54:30,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:54:30,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922887708] [2023-11-10 11:54:30,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:54:30,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:54:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:54:31,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:54:31,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:54:31,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922887708] [2023-11-10 11:54:31,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922887708] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:54:31,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:54:31,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 11:54:31,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638043210] [2023-11-10 11:54:31,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:54:31,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 11:54:31,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:54:31,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 11:54:31,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-10 11:54:31,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 139 [2023-11-10 11:54:31,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 130 transitions, 439 flow. Second operand has 8 states, 8 states have (on average 90.875) internal successors, (727), 8 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:31,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:54:31,047 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 139 [2023-11-10 11:54:31,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:54:31,161 INFO L124 PetriNetUnfolderBase]: 47/381 cut-off events. [2023-11-10 11:54:31,161 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2023-11-10 11:54:31,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 381 events. 47/381 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1532 event pairs, 6 based on Foata normal form. 2/377 useless extension candidates. Maximal degree in co-relation 757. Up to 114 conditions per place. [2023-11-10 11:54:31,163 INFO L140 encePairwiseOnDemand]: 133/139 looper letters, 38 selfloop transitions, 6 changer transitions 17/130 dead transitions. [2023-11-10 11:54:31,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 130 transitions, 527 flow [2023-11-10 11:54:31,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-10 11:54:31,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-10 11:54:31,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 570 transitions. [2023-11-10 11:54:31,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6834532374100719 [2023-11-10 11:54:31,165 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 570 transitions. [2023-11-10 11:54:31,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 570 transitions. [2023-11-10 11:54:31,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:54:31,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 570 transitions. [2023-11-10 11:54:31,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 95.0) internal successors, (570), 6 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:31,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:31,170 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:31,171 INFO L175 Difference]: Start difference. First operand has 140 places, 130 transitions, 439 flow. Second operand 6 states and 570 transitions. [2023-11-10 11:54:31,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 130 transitions, 527 flow [2023-11-10 11:54:31,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 130 transitions, 506 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-11-10 11:54:31,174 INFO L231 Difference]: Finished difference. Result has 133 places, 108 transitions, 330 flow [2023-11-10 11:54:31,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=402, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=330, PETRI_PLACES=133, PETRI_TRANSITIONS=108} [2023-11-10 11:54:31,176 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 10 predicate places. [2023-11-10 11:54:31,176 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 108 transitions, 330 flow [2023-11-10 11:54:31,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 90.875) internal successors, (727), 8 states have internal predecessors, (727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:31,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:54:31,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:54:31,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-10 11:54:31,177 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-10 11:54:31,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:54:31,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1153662162, now seen corresponding path program 1 times [2023-11-10 11:54:31,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:54:31,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301919439] [2023-11-10 11:54:31,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:54:31,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:54:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:54:31,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:54:31,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:54:31,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301919439] [2023-11-10 11:54:31,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301919439] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:54:31,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:54:31,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 11:54:31,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251270430] [2023-11-10 11:54:31,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:54:31,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 11:54:31,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:54:31,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 11:54:31,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-10 11:54:31,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 139 [2023-11-10 11:54:31,349 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 108 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 97.66666666666667) internal successors, (586), 6 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:31,349 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:54:31,349 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 139 [2023-11-10 11:54:31,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:54:31,433 INFO L124 PetriNetUnfolderBase]: 24/323 cut-off events. [2023-11-10 11:54:31,433 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2023-11-10 11:54:31,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 323 events. 24/323 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1087 event pairs, 9 based on Foata normal form. 12/335 useless extension candidates. Maximal degree in co-relation 586. Up to 60 conditions per place. [2023-11-10 11:54:31,435 INFO L140 encePairwiseOnDemand]: 123/139 looper letters, 23 selfloop transitions, 16 changer transitions 2/113 dead transitions. [2023-11-10 11:54:31,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 113 transitions, 424 flow [2023-11-10 11:54:31,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-10 11:54:31,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-10 11:54:31,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 508 transitions. [2023-11-10 11:54:31,436 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7309352517985611 [2023-11-10 11:54:31,436 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 508 transitions. [2023-11-10 11:54:31,436 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 508 transitions. [2023-11-10 11:54:31,436 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:54:31,436 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 508 transitions. [2023-11-10 11:54:31,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.6) internal successors, (508), 5 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:31,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:31,438 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:31,438 INFO L175 Difference]: Start difference. First operand has 133 places, 108 transitions, 330 flow. Second operand 5 states and 508 transitions. [2023-11-10 11:54:31,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 113 transitions, 424 flow [2023-11-10 11:54:31,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 113 transitions, 368 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-11-10 11:54:31,441 INFO L231 Difference]: Finished difference. Result has 120 places, 108 transitions, 322 flow [2023-11-10 11:54:31,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=322, PETRI_PLACES=120, PETRI_TRANSITIONS=108} [2023-11-10 11:54:31,443 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -3 predicate places. [2023-11-10 11:54:31,444 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 108 transitions, 322 flow [2023-11-10 11:54:31,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.66666666666667) internal successors, (586), 6 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:31,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:54:31,444 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:54:31,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-10 11:54:31,445 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-10 11:54:31,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:54:31,445 INFO L85 PathProgramCache]: Analyzing trace with hash -405899425, now seen corresponding path program 1 times [2023-11-10 11:54:31,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:54:31,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365986376] [2023-11-10 11:54:31,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:54:31,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:54:31,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:54:31,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:54:31,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:54:31,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365986376] [2023-11-10 11:54:31,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365986376] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:54:31,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:54:31,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-10 11:54:31,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870643646] [2023-11-10 11:54:31,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:54:31,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-10 11:54:31,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:54:31,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-10 11:54:31,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-10 11:54:31,535 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 139 [2023-11-10 11:54:31,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 108 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:31,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:54:31,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 139 [2023-11-10 11:54:31,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:54:31,593 INFO L124 PetriNetUnfolderBase]: 25/355 cut-off events. [2023-11-10 11:54:31,593 INFO L125 PetriNetUnfolderBase]: For 119/123 co-relation queries the response was YES. [2023-11-10 11:54:31,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 355 events. 25/355 cut-off events. For 119/123 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1367 event pairs, 5 based on Foata normal form. 4/359 useless extension candidates. Maximal degree in co-relation 657. Up to 82 conditions per place. [2023-11-10 11:54:31,595 INFO L140 encePairwiseOnDemand]: 132/139 looper letters, 33 selfloop transitions, 8 changer transitions 1/120 dead transitions. [2023-11-10 11:54:31,595 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 120 transitions, 469 flow [2023-11-10 11:54:31,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-10 11:54:31,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-10 11:54:31,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 336 transitions. [2023-11-10 11:54:31,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8057553956834532 [2023-11-10 11:54:31,596 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 336 transitions. [2023-11-10 11:54:31,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 336 transitions. [2023-11-10 11:54:31,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:54:31,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 336 transitions. [2023-11-10 11:54:31,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:31,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:31,598 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:31,599 INFO L175 Difference]: Start difference. First operand has 120 places, 108 transitions, 322 flow. Second operand 3 states and 336 transitions. [2023-11-10 11:54:31,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 120 transitions, 469 flow [2023-11-10 11:54:31,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 120 transitions, 462 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-11-10 11:54:31,601 INFO L231 Difference]: Finished difference. Result has 118 places, 114 transitions, 384 flow [2023-11-10 11:54:31,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=118, PETRI_TRANSITIONS=114} [2023-11-10 11:54:31,602 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -5 predicate places. [2023-11-10 11:54:31,602 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 114 transitions, 384 flow [2023-11-10 11:54:31,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:31,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:54:31,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:54:31,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-10 11:54:31,603 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-10 11:54:31,603 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:54:31,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1323822187, now seen corresponding path program 2 times [2023-11-10 11:54:31,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:54:31,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689388039] [2023-11-10 11:54:31,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:54:31,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:54:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:54:31,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:54:31,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:54:31,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689388039] [2023-11-10 11:54:31,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689388039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:54:31,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:54:31,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-10 11:54:31,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950350744] [2023-11-10 11:54:31,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:54:31,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-10 11:54:31,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:54:31,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-10 11:54:31,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-10 11:54:31,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 139 [2023-11-10 11:54:31,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 114 transitions, 384 flow. Second operand has 6 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:31,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:54:31,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 139 [2023-11-10 11:54:31,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:54:31,916 INFO L124 PetriNetUnfolderBase]: 11/226 cut-off events. [2023-11-10 11:54:31,917 INFO L125 PetriNetUnfolderBase]: For 132/138 co-relation queries the response was YES. [2023-11-10 11:54:31,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 460 conditions, 226 events. 11/226 cut-off events. For 132/138 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 542 event pairs, 0 based on Foata normal form. 11/237 useless extension candidates. Maximal degree in co-relation 397. Up to 41 conditions per place. [2023-11-10 11:54:31,918 INFO L140 encePairwiseOnDemand]: 134/139 looper letters, 33 selfloop transitions, 7 changer transitions 2/112 dead transitions. [2023-11-10 11:54:31,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 112 transitions, 443 flow [2023-11-10 11:54:31,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-10 11:54:31,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-10 11:54:31,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 502 transitions. [2023-11-10 11:54:31,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7223021582733813 [2023-11-10 11:54:31,919 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 502 transitions. [2023-11-10 11:54:31,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 502 transitions. [2023-11-10 11:54:31,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:54:31,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 502 transitions. [2023-11-10 11:54:31,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.4) internal successors, (502), 5 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:31,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:31,922 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:31,922 INFO L175 Difference]: Start difference. First operand has 118 places, 114 transitions, 384 flow. Second operand 5 states and 502 transitions. [2023-11-10 11:54:31,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 112 transitions, 443 flow [2023-11-10 11:54:31,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 112 transitions, 436 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-10 11:54:31,924 INFO L231 Difference]: Finished difference. Result has 121 places, 107 transitions, 343 flow [2023-11-10 11:54:31,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=343, PETRI_PLACES=121, PETRI_TRANSITIONS=107} [2023-11-10 11:54:31,925 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, -2 predicate places. [2023-11-10 11:54:31,925 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 107 transitions, 343 flow [2023-11-10 11:54:31,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.83333333333333) internal successors, (587), 6 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:31,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-10 11:54:31,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:54:31,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-10 11:54:31,926 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-11-10 11:54:31,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-10 11:54:31,926 INFO L85 PathProgramCache]: Analyzing trace with hash 402053300, now seen corresponding path program 1 times [2023-11-10 11:54:31,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-10 11:54:31,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095113514] [2023-11-10 11:54:31,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-10 11:54:31,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-10 11:54:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-10 11:54:32,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-10 11:54:32,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-10 11:54:32,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095113514] [2023-11-10 11:54:32,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095113514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-10 11:54:32,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-10 11:54:32,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-10 11:54:32,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804732394] [2023-11-10 11:54:32,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-10 11:54:32,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-10 11:54:32,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-10 11:54:32,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-10 11:54:32,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-10 11:54:32,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 139 [2023-11-10 11:54:32,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 107 transitions, 343 flow. Second operand has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:32,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-10 11:54:32,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 139 [2023-11-10 11:54:32,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-10 11:54:32,174 INFO L124 PetriNetUnfolderBase]: 5/194 cut-off events. [2023-11-10 11:54:32,174 INFO L125 PetriNetUnfolderBase]: For 49/50 co-relation queries the response was YES. [2023-11-10 11:54:32,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 194 events. 5/194 cut-off events. For 49/50 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 390 event pairs, 0 based on Foata normal form. 2/196 useless extension candidates. Maximal degree in co-relation 344. Up to 37 conditions per place. [2023-11-10 11:54:32,175 INFO L140 encePairwiseOnDemand]: 125/139 looper letters, 0 selfloop transitions, 0 changer transitions 111/111 dead transitions. [2023-11-10 11:54:32,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 111 transitions, 419 flow [2023-11-10 11:54:32,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-10 11:54:32,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-10 11:54:32,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1158 transitions. [2023-11-10 11:54:32,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6942446043165468 [2023-11-10 11:54:32,177 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1158 transitions. [2023-11-10 11:54:32,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1158 transitions. [2023-11-10 11:54:32,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-10 11:54:32,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1158 transitions. [2023-11-10 11:54:32,180 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 96.5) internal successors, (1158), 12 states have internal predecessors, (1158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:32,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 139.0) internal successors, (1807), 13 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:32,182 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 139.0) internal successors, (1807), 13 states have internal predecessors, (1807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:32,182 INFO L175 Difference]: Start difference. First operand has 121 places, 107 transitions, 343 flow. Second operand 12 states and 1158 transitions. [2023-11-10 11:54:32,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 111 transitions, 419 flow [2023-11-10 11:54:32,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 111 transitions, 405 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-11-10 11:54:32,184 INFO L231 Difference]: Finished difference. Result has 126 places, 0 transitions, 0 flow [2023-11-10 11:54:32,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=325, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=126, PETRI_TRANSITIONS=0} [2023-11-10 11:54:32,185 INFO L281 CegarLoopForPetriNet]: 123 programPoint places, 3 predicate places. [2023-11-10 11:54:32,185 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 0 transitions, 0 flow [2023-11-10 11:54:32,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 97.0) internal successors, (776), 8 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-10 11:54:32,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-11-10 11:54:32,187 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-11-10 11:54:32,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-11-10 11:54:32,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-11-10 11:54:32,188 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-11-10 11:54:32,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-10 11:54:32,188 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-11-10 11:54:32,190 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-10 11:54:32,190 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-10 11:54:32,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.11 11:54:32 BasicIcfg [2023-11-10 11:54:32,194 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-10 11:54:32,194 INFO L158 Benchmark]: Toolchain (without parser) took 4330.48ms. Allocated memory was 203.4MB in the beginning and 352.3MB in the end (delta: 148.9MB). Free memory was 158.3MB in the beginning and 217.9MB in the end (delta: -59.5MB). Peak memory consumption was 90.1MB. Max. memory is 8.0GB. [2023-11-10 11:54:32,195 INFO L158 Benchmark]: CDTParser took 0.41ms. Allocated memory is still 203.4MB. Free memory is still 159.4MB. There was no memory consumed. Max. memory is 8.0GB. [2023-11-10 11:54:32,195 INFO L158 Benchmark]: CACSL2BoogieTranslator took 359.21ms. Allocated memory is still 203.4MB. Free memory was 158.1MB in the beginning and 138.4MB in the end (delta: 19.7MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. [2023-11-10 11:54:32,195 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.14ms. Allocated memory is still 203.4MB. Free memory was 138.4MB in the beginning and 136.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2023-11-10 11:54:32,195 INFO L158 Benchmark]: Boogie Preprocessor took 18.41ms. Allocated memory is still 203.4MB. Free memory was 136.3MB in the beginning and 134.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-11-10 11:54:32,195 INFO L158 Benchmark]: RCFGBuilder took 368.17ms. Allocated memory is still 203.4MB. Free memory was 134.6MB in the beginning and 118.3MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2023-11-10 11:54:32,195 INFO L158 Benchmark]: TraceAbstraction took 3534.25ms. Allocated memory was 203.4MB in the beginning and 352.3MB in the end (delta: 148.9MB). Free memory was 117.7MB in the beginning and 217.9MB in the end (delta: -100.2MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. [2023-11-10 11:54:32,196 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.41ms. Allocated memory is still 203.4MB. Free memory is still 159.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 359.21ms. Allocated memory is still 203.4MB. Free memory was 158.1MB in the beginning and 138.4MB in the end (delta: 19.7MB). Peak memory consumption was 19.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 46.14ms. Allocated memory is still 203.4MB. Free memory was 138.4MB in the beginning and 136.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.41ms. Allocated memory is still 203.4MB. Free memory was 136.3MB in the beginning and 134.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 368.17ms. Allocated memory is still 203.4MB. Free memory was 134.6MB in the beginning and 118.3MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 3534.25ms. Allocated memory was 203.4MB in the beginning and 352.3MB in the end (delta: 148.9MB). Free memory was 117.7MB in the beginning and 217.9MB in the end (delta: -100.2MB). Peak memory consumption was 50.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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 - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 171 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.4s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 328 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 328 mSDsluCounter, 439 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 291 mSDsCounter, 96 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 693 IncrementalHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 96 mSolverCounterUnsat, 148 mSDtfsCounter, 693 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 97 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=439occurred in iteration=4, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 684 NumberOfCodeBlocks, 684 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 675 ConstructedInterpolants, 0 QuantifiedInterpolants, 2358 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-10 11:54:32,215 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...