/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 12:32:20,203 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 12:32:20,243 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 12:32:20,246 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 12:32:20,246 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 12:32:20,262 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 12:32:20,262 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 12:32:20,263 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 12:32:20,263 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 12:32:20,263 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 12:32:20,263 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 12:32:20,264 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 12:32:20,264 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 12:32:20,264 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 12:32:20,264 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 12:32:20,265 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 12:32:20,265 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 12:32:20,265 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 12:32:20,265 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 12:32:20,265 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 12:32:20,266 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 12:32:20,266 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 12:32:20,266 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 12:32:20,266 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 12:32:20,266 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 12:32:20,267 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 12:32:20,267 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 12:32:20,267 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 12:32:20,267 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 12:32:20,267 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 12:32:20,268 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 12:32:20,268 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 12:32:20,268 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 12:32:20,268 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 12:32:20,268 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 12:32:20,269 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 12:32:20,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 12:32:20,514 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 12:32:20,516 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 12:32:20,516 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 12:32:20,517 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 12:32:20,519 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2023-08-24 12:32:21,478 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 12:32:21,732 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 12:32:21,732 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_27-multiple-protecting2_true.i [2023-08-24 12:32:21,744 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a9aa827/43b35a7c69c741369cd02a010b830bc3/FLAG63d04db90 [2023-08-24 12:32:21,753 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2a9aa827/43b35a7c69c741369cd02a010b830bc3 [2023-08-24 12:32:21,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 12:32:21,756 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 12:32:21,765 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 12:32:21,765 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 12:32:21,767 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 12:32:21,767 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:32:21" (1/1) ... [2023-08-24 12:32:21,768 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@304c3eca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:21, skipping insertion in model container [2023-08-24 12:32:21,768 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 12:32:21" (1/1) ... [2023-08-24 12:32:21,805 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 12:32:21,894 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_27-multiple-protecting2_true.i[1097,1110] [2023-08-24 12:32:21,969 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 12:32:21,977 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 12:32:21,983 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_27-multiple-protecting2_true.i[1097,1110] [2023-08-24 12:32:21,989 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-24 12:32:21,990 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-24 12:32:22,004 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 12:32:22,029 INFO L206 MainTranslator]: Completed translation [2023-08-24 12:32:22,029 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:22 WrapperNode [2023-08-24 12:32:22,030 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 12:32:22,030 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 12:32:22,030 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 12:32:22,030 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 12:32:22,034 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:22" (1/1) ... [2023-08-24 12:32:22,043 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:22" (1/1) ... [2023-08-24 12:32:22,061 INFO L138 Inliner]: procedures = 163, calls = 52, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 104 [2023-08-24 12:32:22,061 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 12:32:22,062 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 12:32:22,062 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 12:32:22,062 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 12:32:22,066 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:22" (1/1) ... [2023-08-24 12:32:22,067 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:22" (1/1) ... [2023-08-24 12:32:22,069 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:22" (1/1) ... [2023-08-24 12:32:22,069 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:22" (1/1) ... [2023-08-24 12:32:22,072 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:22" (1/1) ... [2023-08-24 12:32:22,073 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:22" (1/1) ... [2023-08-24 12:32:22,074 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:22" (1/1) ... [2023-08-24 12:32:22,075 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:22" (1/1) ... [2023-08-24 12:32:22,076 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 12:32:22,077 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 12:32:22,077 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 12:32:22,077 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 12:32:22,077 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:22" (1/1) ... [2023-08-24 12:32:22,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 12:32:22,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 12:32:22,109 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-24 12:32:22,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-24 12:32:22,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 12:32:22,136 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-24 12:32:22,136 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-24 12:32:22,136 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 12:32:22,136 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-24 12:32:22,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 12:32:22,136 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 12:32:22,136 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-24 12:32:22,137 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-24 12:32:22,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 12:32:22,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 12:32:22,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 12:32:22,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 12:32:22,138 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 12:32:22,257 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 12:32:22,259 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 12:32:22,404 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 12:32:22,410 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 12:32:22,410 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-24 12:32:22,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:32:22 BoogieIcfgContainer [2023-08-24 12:32:22,411 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 12:32:22,412 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 12:32:22,412 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 12:32:22,414 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 12:32:22,414 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 12:32:21" (1/3) ... [2023-08-24 12:32:22,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e9bc0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:32:22, skipping insertion in model container [2023-08-24 12:32:22,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 12:32:22" (2/3) ... [2023-08-24 12:32:22,415 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e9bc0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 12:32:22, skipping insertion in model container [2023-08-24 12:32:22,415 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 12:32:22" (3/3) ... [2023-08-24 12:32:22,416 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_27-multiple-protecting2_true.i [2023-08-24 12:32:22,427 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 12:32:22,427 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-24 12:32:22,427 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 12:32:22,519 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-24 12:32:22,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 147 transitions, 310 flow [2023-08-24 12:32:22,631 INFO L124 PetriNetUnfolderBase]: 4/145 cut-off events. [2023-08-24 12:32:22,637 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-24 12:32:22,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 145 events. 4/145 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 136 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 97. Up to 2 conditions per place. [2023-08-24 12:32:22,642 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 147 transitions, 310 flow [2023-08-24 12:32:22,646 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 127 transitions, 260 flow [2023-08-24 12:32:22,649 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 12:32:22,659 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 127 transitions, 260 flow [2023-08-24 12:32:22,661 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 127 transitions, 260 flow [2023-08-24 12:32:22,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 127 transitions, 260 flow [2023-08-24 12:32:22,680 INFO L124 PetriNetUnfolderBase]: 3/127 cut-off events. [2023-08-24 12:32:22,681 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 12:32:22,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 127 events. 3/127 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 129 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 91. Up to 2 conditions per place. [2023-08-24 12:32:22,683 INFO L119 LiptonReduction]: Number of co-enabled transitions 4248 [2023-08-24 12:32:25,835 INFO L134 LiptonReduction]: Checked pairs total: 10770 [2023-08-24 12:32:25,836 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-08-24 12:32:25,850 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 12:32:25,856 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@121129f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 12:32:25,856 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-24 12:32:25,859 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 12:32:25,859 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-24 12:32:25,860 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-24 12:32:25,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:32:25,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:32:25,860 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-24 12:32:25,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:32:25,864 INFO L85 PathProgramCache]: Analyzing trace with hash 246070809, now seen corresponding path program 1 times [2023-08-24 12:32:25,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:32:25,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810248350] [2023-08-24 12:32:25,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:32:25,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:32:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:32:26,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 12:32:26,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:32:26,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810248350] [2023-08-24 12:32:26,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810248350] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:32:26,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:32:26,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 12:32:26,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169632990] [2023-08-24 12:32:26,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:32:26,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 12:32:26,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:32:26,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 12:32:26,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 12:32:26,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 250 [2023-08-24 12:32:26,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 39 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:26,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:32:26,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 250 [2023-08-24 12:32:26,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:32:26,291 INFO L124 PetriNetUnfolderBase]: 1275/2314 cut-off events. [2023-08-24 12:32:26,292 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-24 12:32:26,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4394 conditions, 2314 events. 1275/2314 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 13566 event pairs, 495 based on Foata normal form. 21/2224 useless extension candidates. Maximal degree in co-relation 4384. Up to 1328 conditions per place. [2023-08-24 12:32:26,304 INFO L140 encePairwiseOnDemand]: 244/250 looper letters, 51 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-08-24 12:32:26,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 58 transitions, 231 flow [2023-08-24 12:32:26,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 12:32:26,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 12:32:26,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 439 transitions. [2023-08-24 12:32:26,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5853333333333334 [2023-08-24 12:32:26,329 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 439 transitions. [2023-08-24 12:32:26,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 439 transitions. [2023-08-24 12:32:26,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:32:26,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 439 transitions. [2023-08-24 12:32:26,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:26,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:26,342 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:26,343 INFO L175 Difference]: Start difference. First operand has 45 places, 39 transitions, 84 flow. Second operand 3 states and 439 transitions. [2023-08-24 12:32:26,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 58 transitions, 231 flow [2023-08-24 12:32:26,346 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 58 transitions, 228 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 12:32:26,348 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 90 flow [2023-08-24 12:32:26,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2023-08-24 12:32:26,351 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 0 predicate places. [2023-08-24 12:32:26,351 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 90 flow [2023-08-24 12:32:26,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:26,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:32:26,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:32:26,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 12:32:26,352 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-24 12:32:26,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:32:26,353 INFO L85 PathProgramCache]: Analyzing trace with hash 389176039, now seen corresponding path program 1 times [2023-08-24 12:32:26,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:32:26,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382638108] [2023-08-24 12:32:26,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:32:26,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:32:26,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:32:26,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 12:32:26,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:32:26,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382638108] [2023-08-24 12:32:26,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382638108] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:32:26,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:32:26,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 12:32:26,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618341706] [2023-08-24 12:32:26,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:32:26,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 12:32:26,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:32:26,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 12:32:26,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-24 12:32:26,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 250 [2023-08-24 12:32:26,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 90 flow. Second operand has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:26,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:32:26,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 250 [2023-08-24 12:32:26,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:32:26,678 INFO L124 PetriNetUnfolderBase]: 731/1427 cut-off events. [2023-08-24 12:32:26,678 INFO L125 PetriNetUnfolderBase]: For 53/53 co-relation queries the response was YES. [2023-08-24 12:32:26,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3056 conditions, 1427 events. 731/1427 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7300 event pairs, 224 based on Foata normal form. 171/1571 useless extension candidates. Maximal degree in co-relation 3045. Up to 1145 conditions per place. [2023-08-24 12:32:26,684 INFO L140 encePairwiseOnDemand]: 244/250 looper letters, 64 selfloop transitions, 6 changer transitions 0/70 dead transitions. [2023-08-24 12:32:26,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 70 transitions, 307 flow [2023-08-24 12:32:26,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 12:32:26,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 12:32:26,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 468 transitions. [2023-08-24 12:32:26,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.468 [2023-08-24 12:32:26,689 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 468 transitions. [2023-08-24 12:32:26,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 468 transitions. [2023-08-24 12:32:26,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:32:26,689 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 468 transitions. [2023-08-24 12:32:26,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:26,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:26,692 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:26,692 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 90 flow. Second operand 4 states and 468 transitions. [2023-08-24 12:32:26,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 70 transitions, 307 flow [2023-08-24 12:32:26,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 70 transitions, 301 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 12:32:26,696 INFO L231 Difference]: Finished difference. Result has 47 places, 40 transitions, 115 flow [2023-08-24 12:32:26,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=115, PETRI_PLACES=47, PETRI_TRANSITIONS=40} [2023-08-24 12:32:26,697 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 2 predicate places. [2023-08-24 12:32:26,697 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 40 transitions, 115 flow [2023-08-24 12:32:26,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:26,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:32:26,697 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:32:26,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 12:32:26,698 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-24 12:32:26,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:32:26,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1307143034, now seen corresponding path program 1 times [2023-08-24 12:32:26,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:32:26,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188148511] [2023-08-24 12:32:26,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:32:26,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:32:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:32:26,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 12:32:26,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:32:26,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188148511] [2023-08-24 12:32:26,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188148511] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:32:26,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:32:26,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-24 12:32:26,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205834994] [2023-08-24 12:32:26,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:32:26,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 12:32:26,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:32:26,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 12:32:26,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 12:32:26,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 250 [2023-08-24 12:32:26,749 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 115 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:26,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:32:26,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 250 [2023-08-24 12:32:26,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:32:26,845 INFO L124 PetriNetUnfolderBase]: 460/1048 cut-off events. [2023-08-24 12:32:26,846 INFO L125 PetriNetUnfolderBase]: For 203/203 co-relation queries the response was YES. [2023-08-24 12:32:26,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2349 conditions, 1048 events. 460/1048 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 5814 event pairs, 144 based on Foata normal form. 0/1032 useless extension candidates. Maximal degree in co-relation 2337. Up to 629 conditions per place. [2023-08-24 12:32:26,850 INFO L140 encePairwiseOnDemand]: 247/250 looper letters, 53 selfloop transitions, 2 changer transitions 0/61 dead transitions. [2023-08-24 12:32:26,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 61 transitions, 283 flow [2023-08-24 12:32:26,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 12:32:26,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 12:32:26,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 441 transitions. [2023-08-24 12:32:26,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.588 [2023-08-24 12:32:26,852 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 441 transitions. [2023-08-24 12:32:26,852 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 441 transitions. [2023-08-24 12:32:26,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:32:26,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 441 transitions. [2023-08-24 12:32:26,853 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:26,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:26,854 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:26,854 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 115 flow. Second operand 3 states and 441 transitions. [2023-08-24 12:32:26,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 61 transitions, 283 flow [2023-08-24 12:32:26,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-24 12:32:26,856 INFO L231 Difference]: Finished difference. Result has 49 places, 40 transitions, 122 flow [2023-08-24 12:32:26,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=49, PETRI_TRANSITIONS=40} [2023-08-24 12:32:26,856 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 4 predicate places. [2023-08-24 12:32:26,856 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 40 transitions, 122 flow [2023-08-24 12:32:26,857 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:26,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:32:26,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:32:26,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 12:32:26,857 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-24 12:32:26,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:32:26,858 INFO L85 PathProgramCache]: Analyzing trace with hash -561844962, now seen corresponding path program 1 times [2023-08-24 12:32:26,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:32:26,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102531574] [2023-08-24 12:32:26,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:32:26,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:32:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:32:26,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 12:32:26,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:32:26,950 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102531574] [2023-08-24 12:32:26,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102531574] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:32:26,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:32:26,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 12:32:26,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464699606] [2023-08-24 12:32:26,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:32:26,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 12:32:26,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:32:26,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 12:32:26,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 12:32:26,952 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 250 [2023-08-24 12:32:26,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 40 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 130.25) internal successors, (521), 4 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:26,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:32:26,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 250 [2023-08-24 12:32:26,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:32:27,073 INFO L124 PetriNetUnfolderBase]: 424/969 cut-off events. [2023-08-24 12:32:27,073 INFO L125 PetriNetUnfolderBase]: For 255/255 co-relation queries the response was YES. [2023-08-24 12:32:27,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2295 conditions, 969 events. 424/969 cut-off events. For 255/255 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5287 event pairs, 325 based on Foata normal form. 33/997 useless extension candidates. Maximal degree in co-relation 2281. Up to 668 conditions per place. [2023-08-24 12:32:27,078 INFO L140 encePairwiseOnDemand]: 244/250 looper letters, 52 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2023-08-24 12:32:27,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 61 transitions, 287 flow [2023-08-24 12:32:27,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 12:32:27,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 12:32:27,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 564 transitions. [2023-08-24 12:32:27,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564 [2023-08-24 12:32:27,080 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 564 transitions. [2023-08-24 12:32:27,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 564 transitions. [2023-08-24 12:32:27,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:32:27,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 564 transitions. [2023-08-24 12:32:27,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.0) internal successors, (564), 4 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:27,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:27,083 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:27,083 INFO L175 Difference]: Start difference. First operand has 49 places, 40 transitions, 122 flow. Second operand 4 states and 564 transitions. [2023-08-24 12:32:27,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 61 transitions, 287 flow [2023-08-24 12:32:27,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 61 transitions, 281 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 12:32:27,085 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 133 flow [2023-08-24 12:32:27,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2023-08-24 12:32:27,086 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 6 predicate places. [2023-08-24 12:32:27,086 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 133 flow [2023-08-24 12:32:27,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 130.25) internal successors, (521), 4 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:27,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:32:27,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:32:27,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 12:32:27,087 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-24 12:32:27,087 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:32:27,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1224570049, now seen corresponding path program 1 times [2023-08-24 12:32:27,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:32:27,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785938346] [2023-08-24 12:32:27,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:32:27,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:32:27,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:32:27,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 12:32:27,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:32:27,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785938346] [2023-08-24 12:32:27,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785938346] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:32:27,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:32:27,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 12:32:27,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541625837] [2023-08-24 12:32:27,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:32:27,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-24 12:32:27,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:32:27,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-24 12:32:27,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-24 12:32:27,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 250 [2023-08-24 12:32:27,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:27,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:32:27,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 250 [2023-08-24 12:32:27,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:32:27,294 INFO L124 PetriNetUnfolderBase]: 517/1264 cut-off events. [2023-08-24 12:32:27,294 INFO L125 PetriNetUnfolderBase]: For 407/407 co-relation queries the response was YES. [2023-08-24 12:32:27,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3301 conditions, 1264 events. 517/1264 cut-off events. For 407/407 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 7393 event pairs, 238 based on Foata normal form. 219/1483 useless extension candidates. Maximal degree in co-relation 3286. Up to 660 conditions per place. [2023-08-24 12:32:27,299 INFO L140 encePairwiseOnDemand]: 232/250 looper letters, 49 selfloop transitions, 19 changer transitions 1/69 dead transitions. [2023-08-24 12:32:27,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 69 transitions, 372 flow [2023-08-24 12:32:27,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-24 12:32:27,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-24 12:32:27,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 387 transitions. [2023-08-24 12:32:27,301 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.516 [2023-08-24 12:32:27,301 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 387 transitions. [2023-08-24 12:32:27,301 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 387 transitions. [2023-08-24 12:32:27,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:32:27,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 387 transitions. [2023-08-24 12:32:27,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:27,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:27,304 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 250.0) internal successors, (1000), 4 states have internal predecessors, (1000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:27,304 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 133 flow. Second operand 3 states and 387 transitions. [2023-08-24 12:32:27,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 69 transitions, 372 flow [2023-08-24 12:32:27,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 69 transitions, 347 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-24 12:32:27,307 INFO L231 Difference]: Finished difference. Result has 50 places, 51 transitions, 233 flow [2023-08-24 12:32:27,307 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=233, PETRI_PLACES=50, PETRI_TRANSITIONS=51} [2023-08-24 12:32:27,308 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 5 predicate places. [2023-08-24 12:32:27,308 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 51 transitions, 233 flow [2023-08-24 12:32:27,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:27,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:32:27,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:32:27,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-24 12:32:27,309 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-24 12:32:27,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:32:27,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1004454965, now seen corresponding path program 1 times [2023-08-24 12:32:27,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:32:27,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106831721] [2023-08-24 12:32:27,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:32:27,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:32:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:32:27,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 12:32:27,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:32:27,453 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106831721] [2023-08-24 12:32:27,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106831721] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:32:27,453 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:32:27,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 12:32:27,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252196965] [2023-08-24 12:32:27,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:32:27,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 12:32:27,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:32:27,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 12:32:27,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-24 12:32:27,454 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 250 [2023-08-24 12:32:27,455 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 51 transitions, 233 flow. Second operand has 5 states, 5 states have (on average 96.6) internal successors, (483), 5 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:27,455 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:32:27,455 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 250 [2023-08-24 12:32:27,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:32:27,537 INFO L124 PetriNetUnfolderBase]: 221/625 cut-off events. [2023-08-24 12:32:27,537 INFO L125 PetriNetUnfolderBase]: For 369/369 co-relation queries the response was YES. [2023-08-24 12:32:27,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2020 conditions, 625 events. 221/625 cut-off events. For 369/369 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3115 event pairs, 46 based on Foata normal form. 55/680 useless extension candidates. Maximal degree in co-relation 2006. Up to 587 conditions per place. [2023-08-24 12:32:27,539 INFO L140 encePairwiseOnDemand]: 246/250 looper letters, 45 selfloop transitions, 6 changer transitions 9/60 dead transitions. [2023-08-24 12:32:27,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 60 transitions, 388 flow [2023-08-24 12:32:27,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 12:32:27,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 12:32:27,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 418 transitions. [2023-08-24 12:32:27,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.418 [2023-08-24 12:32:27,541 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 418 transitions. [2023-08-24 12:32:27,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 418 transitions. [2023-08-24 12:32:27,541 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:32:27,541 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 418 transitions. [2023-08-24 12:32:27,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:27,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:27,543 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:27,543 INFO L175 Difference]: Start difference. First operand has 50 places, 51 transitions, 233 flow. Second operand 4 states and 418 transitions. [2023-08-24 12:32:27,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 60 transitions, 388 flow [2023-08-24 12:32:27,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 60 transitions, 362 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-24 12:32:27,546 INFO L231 Difference]: Finished difference. Result has 48 places, 40 transitions, 173 flow [2023-08-24 12:32:27,546 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=173, PETRI_PLACES=48, PETRI_TRANSITIONS=40} [2023-08-24 12:32:27,546 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, 3 predicate places. [2023-08-24 12:32:27,546 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 40 transitions, 173 flow [2023-08-24 12:32:27,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.6) internal successors, (483), 5 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:27,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:32:27,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:32:27,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-24 12:32:27,547 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-24 12:32:27,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:32:27,547 INFO L85 PathProgramCache]: Analyzing trace with hash -133129303, now seen corresponding path program 1 times [2023-08-24 12:32:27,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:32:27,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902576225] [2023-08-24 12:32:27,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:32:27,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:32:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:32:27,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 12:32:27,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:32:27,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902576225] [2023-08-24 12:32:27,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902576225] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:32:27,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:32:27,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-24 12:32:27,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291251787] [2023-08-24 12:32:27,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:32:27,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 12:32:27,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:32:27,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 12:32:27,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-24 12:32:27,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 250 [2023-08-24 12:32:27,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 40 transitions, 173 flow. Second operand has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:27,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:32:27,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 250 [2023-08-24 12:32:27,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:32:27,741 INFO L124 PetriNetUnfolderBase]: 98/319 cut-off events. [2023-08-24 12:32:27,741 INFO L125 PetriNetUnfolderBase]: For 217/217 co-relation queries the response was YES. [2023-08-24 12:32:27,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 988 conditions, 319 events. 98/319 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1410 event pairs, 35 based on Foata normal form. 28/347 useless extension candidates. Maximal degree in co-relation 974. Up to 211 conditions per place. [2023-08-24 12:32:27,742 INFO L140 encePairwiseOnDemand]: 246/250 looper letters, 46 selfloop transitions, 6 changer transitions 0/52 dead transitions. [2023-08-24 12:32:27,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 52 transitions, 330 flow [2023-08-24 12:32:27,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 12:32:27,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 12:32:27,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 416 transitions. [2023-08-24 12:32:27,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.416 [2023-08-24 12:32:27,744 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 416 transitions. [2023-08-24 12:32:27,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 416 transitions. [2023-08-24 12:32:27,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:32:27,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 416 transitions. [2023-08-24 12:32:27,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:27,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:27,746 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:27,746 INFO L175 Difference]: Start difference. First operand has 48 places, 40 transitions, 173 flow. Second operand 4 states and 416 transitions. [2023-08-24 12:32:27,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 52 transitions, 330 flow [2023-08-24 12:32:27,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 52 transitions, 311 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 12:32:27,747 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 168 flow [2023-08-24 12:32:27,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=168, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-08-24 12:32:27,748 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -1 predicate places. [2023-08-24 12:32:27,748 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 168 flow [2023-08-24 12:32:27,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.0) internal successors, (576), 6 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:27,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 12:32:27,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:32:27,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-24 12:32:27,749 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-08-24 12:32:27,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 12:32:27,749 INFO L85 PathProgramCache]: Analyzing trace with hash -238774002, now seen corresponding path program 1 times [2023-08-24 12:32:27,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 12:32:27,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707323876] [2023-08-24 12:32:27,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 12:32:27,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 12:32:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 12:32:27,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 12:32:27,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 12:32:27,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707323876] [2023-08-24 12:32:27,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707323876] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 12:32:27,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 12:32:27,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-24 12:32:27,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061551586] [2023-08-24 12:32:27,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 12:32:27,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 12:32:27,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 12:32:27,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 12:32:27,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 12:32:27,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 250 [2023-08-24 12:32:27,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 168 flow. Second operand has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:27,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 12:32:27,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 250 [2023-08-24 12:32:27,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 12:32:27,881 INFO L124 PetriNetUnfolderBase]: 84/299 cut-off events. [2023-08-24 12:32:27,881 INFO L125 PetriNetUnfolderBase]: For 172/174 co-relation queries the response was YES. [2023-08-24 12:32:27,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 299 events. 84/299 cut-off events. For 172/174 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1325 event pairs, 49 based on Foata normal form. 4/301 useless extension candidates. Maximal degree in co-relation 854. Up to 203 conditions per place. [2023-08-24 12:32:27,882 INFO L140 encePairwiseOnDemand]: 246/250 looper letters, 0 selfloop transitions, 0 changer transitions 50/50 dead transitions. [2023-08-24 12:32:27,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 50 transitions, 298 flow [2023-08-24 12:32:27,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 12:32:27,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 12:32:27,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 552 transitions. [2023-08-24 12:32:27,883 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.552 [2023-08-24 12:32:27,883 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 552 transitions. [2023-08-24 12:32:27,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 552 transitions. [2023-08-24 12:32:27,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 12:32:27,884 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 552 transitions. [2023-08-24 12:32:27,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:27,885 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:27,886 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 250.0) internal successors, (1250), 5 states have internal predecessors, (1250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:27,886 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 168 flow. Second operand 4 states and 552 transitions. [2023-08-24 12:32:27,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 50 transitions, 298 flow [2023-08-24 12:32:27,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 50 transitions, 290 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-24 12:32:27,887 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-08-24 12:32:27,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=250, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-08-24 12:32:27,887 INFO L281 CegarLoopForPetriNet]: 45 programPoint places, -2 predicate places. [2023-08-24 12:32:27,888 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-08-24 12:32:27,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.0) internal successors, (536), 4 states have internal predecessors, (536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 12:32:27,890 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-08-24 12:32:27,890 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-24 12:32:27,890 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-24 12:32:27,890 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-08-24 12:32:27,890 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-24 12:32:27,890 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-08-24 12:32:27,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-24 12:32:27,891 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-24 12:32:27,893 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 12:32:27,893 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 12:32:27,895 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 12:32:27 BasicIcfg [2023-08-24 12:32:27,895 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 12:32:27,896 INFO L158 Benchmark]: Toolchain (without parser) took 6139.75ms. Allocated memory was 373.3MB in the beginning and 564.1MB in the end (delta: 190.8MB). Free memory was 347.6MB in the beginning and 254.3MB in the end (delta: 93.4MB). Peak memory consumption was 286.2MB. Max. memory is 16.0GB. [2023-08-24 12:32:27,896 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 373.3MB. Free memory is still 349.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 12:32:27,896 INFO L158 Benchmark]: CACSL2BoogieTranslator took 265.07ms. Allocated memory is still 373.3MB. Free memory was 347.6MB in the beginning and 327.8MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-24 12:32:27,896 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.92ms. Allocated memory is still 373.3MB. Free memory was 327.8MB in the beginning and 325.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 12:32:27,896 INFO L158 Benchmark]: Boogie Preprocessor took 14.86ms. Allocated memory is still 373.3MB. Free memory was 325.7MB in the beginning and 324.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 12:32:27,897 INFO L158 Benchmark]: RCFGBuilder took 334.33ms. Allocated memory is still 373.3MB. Free memory was 324.1MB in the beginning and 306.7MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-24 12:32:27,897 INFO L158 Benchmark]: TraceAbstraction took 5482.83ms. Allocated memory was 373.3MB in the beginning and 564.1MB in the end (delta: 190.8MB). Free memory was 306.2MB in the beginning and 254.3MB in the end (delta: 51.9MB). Peak memory consumption was 244.3MB. Max. memory is 16.0GB. [2023-08-24 12:32:27,898 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 373.3MB. Free memory is still 349.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 265.07ms. Allocated memory is still 373.3MB. Free memory was 347.6MB in the beginning and 327.8MB in the end (delta: 19.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 30.92ms. Allocated memory is still 373.3MB. Free memory was 327.8MB in the beginning and 325.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 14.86ms. Allocated memory is still 373.3MB. Free memory was 325.7MB in the beginning and 324.1MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 334.33ms. Allocated memory is still 373.3MB. Free memory was 324.1MB in the beginning and 306.7MB in the end (delta: 17.4MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 5482.83ms. Allocated memory was 373.3MB in the beginning and 564.1MB in the end (delta: 190.8MB). Free memory was 306.2MB in the beginning and 254.3MB in the end (delta: 51.9MB). Peak memory consumption was 244.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 131 PlacesBefore, 45 PlacesAfterwards, 127 TransitionsBefore, 39 TransitionsAfterwards, 4248 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 4 ConcurrentYvCompositions, 2 ChoiceCompositions, 103 TotalNumberOfCompositions, 10770 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3440, independent: 3105, independent conditional: 0, independent unconditional: 3105, dependent: 335, dependent conditional: 0, dependent unconditional: 335, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2056, independent: 2001, independent conditional: 0, independent unconditional: 2001, dependent: 55, dependent conditional: 0, dependent unconditional: 55, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3440, independent: 1104, independent conditional: 0, independent unconditional: 1104, dependent: 280, dependent conditional: 0, dependent unconditional: 280, unknown: 2056, unknown conditional: 0, unknown unconditional: 2056] , Statistics on independence cache: Total cache size (in pairs): 124, Positive cache size: 92, Positive conditional cache size: 0, Positive unconditional cache size: 92, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 184 locations, 6 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: 5.3s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 202 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 202 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 71 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 618 IncrementalHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 71 mSolverCounterUnsat, 1 mSDtfsCounter, 618 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=233occurred in iteration=5, InterpolantAutomatonStates: 29, 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, 0.7s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 113 ConstructedInterpolants, 0 QuantifiedInterpolants, 632 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 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! [2023-08-24 12:32:27,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...