/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 INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 04:51:12,616 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 04:51:12,684 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 [2023-08-27 04:51:12,691 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 04:51:12,691 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 04:51:12,733 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 04:51:12,734 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 04:51:12,738 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 04:51:12,739 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 04:51:12,739 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 04:51:12,740 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 04:51:12,740 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 04:51:12,740 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 04:51:12,741 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 04:51:12,741 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 04:51:12,741 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 04:51:12,741 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 04:51:12,742 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 04:51:12,742 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 04:51:12,742 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 04:51:12,743 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 04:51:12,746 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 04:51:12,746 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 04:51:12,747 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 04:51:12,749 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 04:51:12,750 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 04:51:12,750 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 04:51:12,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 04:51:12,750 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 04:51:12,751 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 04:51:12,751 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 04:51:12,751 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 04:51:12,752 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 04:51:12,752 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 04:51:12,752 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 04:51:12,752 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 04:51:13,058 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 04:51:13,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 04:51:13,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 04:51:13,087 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 04:51:13,087 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 04:51:13,088 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i [2023-08-27 04:51:14,310 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 04:51:14,572 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 04:51:14,572 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_24-multiple-protecting_true.i [2023-08-27 04:51:14,591 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb366af7d/198abd64d1514b6e9a92b2a095faf74d/FLAGa7ed33eff [2023-08-27 04:51:14,602 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb366af7d/198abd64d1514b6e9a92b2a095faf74d [2023-08-27 04:51:14,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 04:51:14,605 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 04:51:14,606 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 04:51:14,606 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 04:51:14,609 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 04:51:14,610 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:51:14" (1/1) ... [2023-08-27 04:51:14,610 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cd8fb50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:14, skipping insertion in model container [2023-08-27 04:51:14,611 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 04:51:14" (1/1) ... [2023-08-27 04:51:14,654 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 04:51:14,877 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 04:51:14,896 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 04:51:14,935 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-27 04:51:14,937 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-27 04:51:14,953 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 04:51:15,002 INFO L206 MainTranslator]: Completed translation [2023-08-27 04:51:15,002 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:15 WrapperNode [2023-08-27 04:51:15,002 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 04:51:15,004 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 04:51:15,004 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 04:51:15,004 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 04:51:15,010 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:15" (1/1) ... [2023-08-27 04:51:15,041 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:15" (1/1) ... [2023-08-27 04:51:15,070 INFO L138 Inliner]: procedures = 162, calls = 47, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 102 [2023-08-27 04:51:15,070 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 04:51:15,072 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 04:51:15,072 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 04:51:15,072 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 04:51:15,079 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:15" (1/1) ... [2023-08-27 04:51:15,080 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:15" (1/1) ... [2023-08-27 04:51:15,095 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:15" (1/1) ... [2023-08-27 04:51:15,095 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:15" (1/1) ... [2023-08-27 04:51:15,099 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:15" (1/1) ... [2023-08-27 04:51:15,101 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:15" (1/1) ... [2023-08-27 04:51:15,102 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:15" (1/1) ... [2023-08-27 04:51:15,103 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:15" (1/1) ... [2023-08-27 04:51:15,119 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 04:51:15,120 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 04:51:15,120 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 04:51:15,120 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 04:51:15,121 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:15" (1/1) ... [2023-08-27 04:51:15,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 04:51:15,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 04:51:15,153 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) [2023-08-27 04:51:15,174 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 [2023-08-27 04:51:15,186 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 04:51:15,186 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 04:51:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 04:51:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 04:51:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 04:51:15,187 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-27 04:51:15,187 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-27 04:51:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 04:51:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 04:51:15,188 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 04:51:15,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 04:51:15,189 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 04:51:15,338 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 04:51:15,340 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 04:51:15,641 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 04:51:15,648 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 04:51:15,649 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 04:51:15,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:51:15 BoogieIcfgContainer [2023-08-27 04:51:15,651 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 04:51:15,653 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 04:51:15,653 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 04:51:15,655 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 04:51:15,656 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 04:51:14" (1/3) ... [2023-08-27 04:51:15,656 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784ad202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:51:15, skipping insertion in model container [2023-08-27 04:51:15,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 04:51:15" (2/3) ... [2023-08-27 04:51:15,657 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784ad202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 04:51:15, skipping insertion in model container [2023-08-27 04:51:15,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 04:51:15" (3/3) ... [2023-08-27 04:51:15,658 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_24-multiple-protecting_true.i [2023-08-27 04:51:15,674 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 04:51:15,674 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-27 04:51:15,674 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 04:51:15,735 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-27 04:51:15,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 163 transitions, 334 flow [2023-08-27 04:51:15,825 INFO L124 PetriNetUnfolderBase]: 8/162 cut-off events. [2023-08-27 04:51:15,825 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 04:51:15,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 162 events. 8/162 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 216 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 118. Up to 2 conditions per place. [2023-08-27 04:51:15,832 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 163 transitions, 334 flow [2023-08-27 04:51:15,837 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 155 transitions, 313 flow [2023-08-27 04:51:15,840 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 04:51:15,849 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 155 transitions, 313 flow [2023-08-27 04:51:15,851 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 155 transitions, 313 flow [2023-08-27 04:51:15,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 155 transitions, 313 flow [2023-08-27 04:51:15,884 INFO L124 PetriNetUnfolderBase]: 8/155 cut-off events. [2023-08-27 04:51:15,884 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:51:15,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159 conditions, 155 events. 8/155 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 216 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 118. Up to 2 conditions per place. [2023-08-27 04:51:15,890 INFO L119 LiptonReduction]: Number of co-enabled transitions 6762 [2023-08-27 04:51:19,850 INFO L134 LiptonReduction]: Checked pairs total: 21158 [2023-08-27 04:51:19,851 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-08-27 04:51:19,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 04:51:19,869 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;@2f8b3c7c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 04:51:19,869 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-27 04:51:19,872 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 04:51:19,872 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-08-27 04:51:19,872 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:51:19,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:51:19,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 04:51:19,873 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 18 more)] === [2023-08-27 04:51:19,878 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:51:19,878 INFO L85 PathProgramCache]: Analyzing trace with hash 18075957, now seen corresponding path program 1 times [2023-08-27 04:51:19,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:51:19,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9986185] [2023-08-27 04:51:19,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:51:19,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:51:20,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:51:20,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:51:20,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:51:20,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9986185] [2023-08-27 04:51:20,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9986185] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:51:20,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:51:20,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 04:51:20,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193753495] [2023-08-27 04:51:20,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:51:20,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:51:20,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:51:20,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:51:20,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:51:20,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 312 [2023-08-27 04:51:20,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 57 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:20,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:51:20,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 312 [2023-08-27 04:51:20,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:51:20,473 INFO L124 PetriNetUnfolderBase]: 419/945 cut-off events. [2023-08-27 04:51:20,473 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 04:51:20,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1832 conditions, 945 events. 419/945 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4992 event pairs, 130 based on Foata normal form. 71/730 useless extension candidates. Maximal degree in co-relation 1823. Up to 794 conditions per place. [2023-08-27 04:51:20,481 INFO L140 encePairwiseOnDemand]: 296/312 looper letters, 59 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-08-27 04:51:20,481 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 65 transitions, 255 flow [2023-08-27 04:51:20,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:51:20,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:51:20,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 501 transitions. [2023-08-27 04:51:20,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5352564102564102 [2023-08-27 04:51:20,496 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 501 transitions. [2023-08-27 04:51:20,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 501 transitions. [2023-08-27 04:51:20,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:51:20,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 501 transitions. [2023-08-27 04:51:20,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:20,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:20,510 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:20,512 INFO L175 Difference]: Start difference. First operand has 55 places, 57 transitions, 117 flow. Second operand 3 states and 501 transitions. [2023-08-27 04:51:20,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 65 transitions, 255 flow [2023-08-27 04:51:20,515 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 65 transitions, 254 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 04:51:20,517 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 116 flow [2023-08-27 04:51:20,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-08-27 04:51:20,521 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2023-08-27 04:51:20,521 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 116 flow [2023-08-27 04:51:20,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:20,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:51:20,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:51:20,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 04:51:20,523 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 18 more)] === [2023-08-27 04:51:20,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:51:20,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1630418493, now seen corresponding path program 1 times [2023-08-27 04:51:20,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:51:20,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222037457] [2023-08-27 04:51:20,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:51:20,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:51:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:51:20,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:51:20,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:51:20,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222037457] [2023-08-27 04:51:20,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222037457] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:51:20,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:51:20,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 04:51:20,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549620501] [2023-08-27 04:51:20,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:51:20,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 04:51:20,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:51:20,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 04:51:20,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 04:51:20,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 312 [2023-08-27 04:51:20,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 116 flow. Second operand has 5 states, 5 states have (on average 137.2) internal successors, (686), 5 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:20,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:51:20,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 312 [2023-08-27 04:51:20,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:51:20,824 INFO L124 PetriNetUnfolderBase]: 396/903 cut-off events. [2023-08-27 04:51:20,825 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-27 04:51:20,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1877 conditions, 903 events. 396/903 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4804 event pairs, 29 based on Foata normal form. 0/697 useless extension candidates. Maximal degree in co-relation 1866. Up to 612 conditions per place. [2023-08-27 04:51:20,830 INFO L140 encePairwiseOnDemand]: 307/312 looper letters, 96 selfloop transitions, 4 changer transitions 0/104 dead transitions. [2023-08-27 04:51:20,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 104 transitions, 440 flow [2023-08-27 04:51:20,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 04:51:20,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 04:51:20,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 781 transitions. [2023-08-27 04:51:20,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5006410256410256 [2023-08-27 04:51:20,834 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 781 transitions. [2023-08-27 04:51:20,834 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 781 transitions. [2023-08-27 04:51:20,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:51:20,835 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 781 transitions. [2023-08-27 04:51:20,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.2) internal successors, (781), 5 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:20,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 312.0) internal successors, (1872), 6 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:20,841 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 312.0) internal successors, (1872), 6 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:20,841 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 116 flow. Second operand 5 states and 781 transitions. [2023-08-27 04:51:20,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 104 transitions, 440 flow [2023-08-27 04:51:20,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 104 transitions, 436 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 04:51:20,845 INFO L231 Difference]: Finished difference. Result has 55 places, 47 transitions, 118 flow [2023-08-27 04:51:20,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=55, PETRI_TRANSITIONS=47} [2023-08-27 04:51:20,846 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 0 predicate places. [2023-08-27 04:51:20,846 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 47 transitions, 118 flow [2023-08-27 04:51:20,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.2) internal successors, (686), 5 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:20,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:51:20,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:51:20,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 04:51:20,847 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 18 more)] === [2023-08-27 04:51:20,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:51:20,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1630418473, now seen corresponding path program 1 times [2023-08-27 04:51:20,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:51:20,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798655120] [2023-08-27 04:51:20,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:51:20,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:51:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:51:20,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:51:20,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:51:20,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798655120] [2023-08-27 04:51:20,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798655120] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:51:20,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:51:20,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 04:51:20,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773793554] [2023-08-27 04:51:20,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:51:20,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 04:51:20,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:51:20,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 04:51:20,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 04:51:20,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 312 [2023-08-27 04:51:20,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 47 transitions, 118 flow. Second operand has 5 states, 5 states have (on average 137.2) internal successors, (686), 5 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:20,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:51:20,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 312 [2023-08-27 04:51:20,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:51:21,118 INFO L124 PetriNetUnfolderBase]: 373/856 cut-off events. [2023-08-27 04:51:21,118 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2023-08-27 04:51:21,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1819 conditions, 856 events. 373/856 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 4451 event pairs, 23 based on Foata normal form. 0/679 useless extension candidates. Maximal degree in co-relation 1808. Up to 612 conditions per place. [2023-08-27 04:51:21,123 INFO L140 encePairwiseOnDemand]: 307/312 looper letters, 95 selfloop transitions, 4 changer transitions 0/103 dead transitions. [2023-08-27 04:51:21,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 103 transitions, 440 flow [2023-08-27 04:51:21,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 04:51:21,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 04:51:21,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 780 transitions. [2023-08-27 04:51:21,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-27 04:51:21,126 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 780 transitions. [2023-08-27 04:51:21,126 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 780 transitions. [2023-08-27 04:51:21,127 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:51:21,127 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 780 transitions. [2023-08-27 04:51:21,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 156.0) internal successors, (780), 5 states have internal predecessors, (780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:21,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 312.0) internal successors, (1872), 6 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:21,132 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 312.0) internal successors, (1872), 6 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:21,132 INFO L175 Difference]: Start difference. First operand has 55 places, 47 transitions, 118 flow. Second operand 5 states and 780 transitions. [2023-08-27 04:51:21,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 103 transitions, 440 flow [2023-08-27 04:51:21,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 103 transitions, 432 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 04:51:21,135 INFO L231 Difference]: Finished difference. Result has 54 places, 46 transitions, 116 flow [2023-08-27 04:51:21,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=54, PETRI_TRANSITIONS=46} [2023-08-27 04:51:21,136 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2023-08-27 04:51:21,136 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 46 transitions, 116 flow [2023-08-27 04:51:21,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.2) internal successors, (686), 5 states have internal predecessors, (686), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:21,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:51:21,137 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:51:21,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 04:51:21,137 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 18 more)] === [2023-08-27 04:51:21,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:51:21,138 INFO L85 PathProgramCache]: Analyzing trace with hash 880625157, now seen corresponding path program 1 times [2023-08-27 04:51:21,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:51:21,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516995401] [2023-08-27 04:51:21,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:51:21,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:51:21,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:51:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:51:21,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:51:21,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516995401] [2023-08-27 04:51:21,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516995401] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:51:21,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:51:21,193 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 04:51:21,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987663708] [2023-08-27 04:51:21,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:51:21,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:51:21,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:51:21,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:51:21,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:51:21,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 312 [2023-08-27 04:51:21,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 46 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:21,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:51:21,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 312 [2023-08-27 04:51:21,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:51:21,382 INFO L124 PetriNetUnfolderBase]: 489/1065 cut-off events. [2023-08-27 04:51:21,382 INFO L125 PetriNetUnfolderBase]: For 52/52 co-relation queries the response was YES. [2023-08-27 04:51:21,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2318 conditions, 1065 events. 489/1065 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5661 event pairs, 225 based on Foata normal form. 6/844 useless extension candidates. Maximal degree in co-relation 2307. Up to 835 conditions per place. [2023-08-27 04:51:21,387 INFO L140 encePairwiseOnDemand]: 298/312 looper letters, 70 selfloop transitions, 14 changer transitions 0/86 dead transitions. [2023-08-27 04:51:21,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 86 transitions, 381 flow [2023-08-27 04:51:21,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:51:21,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:51:21,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-08-27 04:51:21,390 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4732905982905983 [2023-08-27 04:51:21,390 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-08-27 04:51:21,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-08-27 04:51:21,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:51:21,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-08-27 04:51:21,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:21,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:21,394 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:21,394 INFO L175 Difference]: Start difference. First operand has 54 places, 46 transitions, 116 flow. Second operand 3 states and 443 transitions. [2023-08-27 04:51:21,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 86 transitions, 381 flow [2023-08-27 04:51:21,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 86 transitions, 369 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 04:51:21,397 INFO L231 Difference]: Finished difference. Result has 53 places, 58 transitions, 198 flow [2023-08-27 04:51:21,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=53, PETRI_TRANSITIONS=58} [2023-08-27 04:51:21,398 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -2 predicate places. [2023-08-27 04:51:21,398 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 58 transitions, 198 flow [2023-08-27 04:51:21,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:21,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:51:21,399 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:51:21,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 04:51:21,399 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 18 more)] === [2023-08-27 04:51:21,399 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:51:21,399 INFO L85 PathProgramCache]: Analyzing trace with hash -830901507, now seen corresponding path program 1 times [2023-08-27 04:51:21,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:51:21,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635989897] [2023-08-27 04:51:21,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:51:21,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:51:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:51:21,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:51:21,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:51:21,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635989897] [2023-08-27 04:51:21,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635989897] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:51:21,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:51:21,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 04:51:21,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099984041] [2023-08-27 04:51:21,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:51:21,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 04:51:21,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:51:21,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 04:51:21,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 04:51:21,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 312 [2023-08-27 04:51:21,511 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 58 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:21,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:51:21,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 312 [2023-08-27 04:51:21,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:51:21,669 INFO L124 PetriNetUnfolderBase]: 329/760 cut-off events. [2023-08-27 04:51:21,672 INFO L125 PetriNetUnfolderBase]: For 156/158 co-relation queries the response was YES. [2023-08-27 04:51:21,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1889 conditions, 760 events. 329/760 cut-off events. For 156/158 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4118 event pairs, 88 based on Foata normal form. 15/589 useless extension candidates. Maximal degree in co-relation 1878. Up to 503 conditions per place. [2023-08-27 04:51:21,677 INFO L140 encePairwiseOnDemand]: 305/312 looper letters, 79 selfloop transitions, 9 changer transitions 3/93 dead transitions. [2023-08-27 04:51:21,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 93 transitions, 472 flow [2023-08-27 04:51:21,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 04:51:21,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 04:51:21,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 538 transitions. [2023-08-27 04:51:21,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4310897435897436 [2023-08-27 04:51:21,683 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 538 transitions. [2023-08-27 04:51:21,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 538 transitions. [2023-08-27 04:51:21,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:51:21,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 538 transitions. [2023-08-27 04:51:21,686 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.5) internal successors, (538), 4 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:21,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:21,689 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:21,690 INFO L175 Difference]: Start difference. First operand has 53 places, 58 transitions, 198 flow. Second operand 4 states and 538 transitions. [2023-08-27 04:51:21,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 93 transitions, 472 flow [2023-08-27 04:51:21,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 93 transitions, 463 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 04:51:21,695 INFO L231 Difference]: Finished difference. Result has 56 places, 57 transitions, 214 flow [2023-08-27 04:51:21,695 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=164, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=56, PETRI_TRANSITIONS=57} [2023-08-27 04:51:21,698 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 1 predicate places. [2023-08-27 04:51:21,698 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 57 transitions, 214 flow [2023-08-27 04:51:21,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 115.25) internal successors, (461), 4 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:21,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:51:21,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:51:21,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 04:51:21,699 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 18 more)] === [2023-08-27 04:51:21,699 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:51:21,700 INFO L85 PathProgramCache]: Analyzing trace with hash -62174210, now seen corresponding path program 1 times [2023-08-27 04:51:21,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:51:21,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829284052] [2023-08-27 04:51:21,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:51:21,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:51:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:51:21,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:51:21,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:51:21,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829284052] [2023-08-27 04:51:21,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829284052] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:51:21,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:51:21,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 04:51:21,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951805195] [2023-08-27 04:51:21,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:51:21,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:51:21,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:51:21,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:51:21,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:51:21,789 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 312 [2023-08-27 04:51:21,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 57 transitions, 214 flow. Second operand has 3 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) [2023-08-27 04:51:21,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:51:21,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 312 [2023-08-27 04:51:21,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:51:21,901 INFO L124 PetriNetUnfolderBase]: 289/670 cut-off events. [2023-08-27 04:51:21,901 INFO L125 PetriNetUnfolderBase]: For 187/188 co-relation queries the response was YES. [2023-08-27 04:51:21,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1762 conditions, 670 events. 289/670 cut-off events. For 187/188 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3296 event pairs, 104 based on Foata normal form. 1/550 useless extension candidates. Maximal degree in co-relation 1749. Up to 454 conditions per place. [2023-08-27 04:51:21,905 INFO L140 encePairwiseOnDemand]: 306/312 looper letters, 67 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-27 04:51:21,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 76 transitions, 419 flow [2023-08-27 04:51:21,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:51:21,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:51:21,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 494 transitions. [2023-08-27 04:51:21,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2023-08-27 04:51:21,907 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 494 transitions. [2023-08-27 04:51:21,907 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 494 transitions. [2023-08-27 04:51:21,907 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:51:21,907 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 494 transitions. [2023-08-27 04:51:21,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.66666666666666) internal successors, (494), 3 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:21,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:21,911 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:21,911 INFO L175 Difference]: Start difference. First operand has 56 places, 57 transitions, 214 flow. Second operand 3 states and 494 transitions. [2023-08-27 04:51:21,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 76 transitions, 419 flow [2023-08-27 04:51:21,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 76 transitions, 418 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 04:51:21,913 INFO L231 Difference]: Finished difference. Result has 56 places, 55 transitions, 219 flow [2023-08-27 04:51:21,914 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=219, PETRI_PLACES=56, PETRI_TRANSITIONS=55} [2023-08-27 04:51:21,914 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 1 predicate places. [2023-08-27 04:51:21,914 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 55 transitions, 219 flow [2023-08-27 04:51:21,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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) [2023-08-27 04:51:21,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:51:21,915 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:51:21,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 04:51:21,915 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 18 more)] === [2023-08-27 04:51:21,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:51:21,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1305595022, now seen corresponding path program 1 times [2023-08-27 04:51:21,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:51:21,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655578421] [2023-08-27 04:51:21,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:51:21,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:51:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:51:22,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:51:22,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:51:22,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655578421] [2023-08-27 04:51:22,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655578421] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:51:22,024 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:51:22,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 04:51:22,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498508519] [2023-08-27 04:51:22,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:51:22,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 04:51:22,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:51:22,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 04:51:22,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-27 04:51:22,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 312 [2023-08-27 04:51:22,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 219 flow. Second operand has 6 states, 6 states have (on average 132.83333333333334) internal successors, (797), 6 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:22,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:51:22,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 312 [2023-08-27 04:51:22,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:51:22,195 INFO L124 PetriNetUnfolderBase]: 199/524 cut-off events. [2023-08-27 04:51:22,195 INFO L125 PetriNetUnfolderBase]: For 199/199 co-relation queries the response was YES. [2023-08-27 04:51:22,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1398 conditions, 524 events. 199/524 cut-off events. For 199/199 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2494 event pairs, 160 based on Foata normal form. 39/506 useless extension candidates. Maximal degree in co-relation 1383. Up to 424 conditions per place. [2023-08-27 04:51:22,198 INFO L140 encePairwiseOnDemand]: 300/312 looper letters, 59 selfloop transitions, 6 changer transitions 1/72 dead transitions. [2023-08-27 04:51:22,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 72 transitions, 419 flow [2023-08-27 04:51:22,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 04:51:22,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 04:51:22,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 979 transitions. [2023-08-27 04:51:22,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4482600732600733 [2023-08-27 04:51:22,201 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 979 transitions. [2023-08-27 04:51:22,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 979 transitions. [2023-08-27 04:51:22,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:51:22,202 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 979 transitions. [2023-08-27 04:51:22,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 139.85714285714286) internal successors, (979), 7 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:22,207 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 312.0) internal successors, (2496), 8 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:22,208 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 312.0) internal successors, (2496), 8 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:22,208 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 219 flow. Second operand 7 states and 979 transitions. [2023-08-27 04:51:22,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 72 transitions, 419 flow [2023-08-27 04:51:22,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 72 transitions, 415 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 04:51:22,210 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 218 flow [2023-08-27 04:51:22,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=218, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2023-08-27 04:51:22,211 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2023-08-27 04:51:22,211 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 218 flow [2023-08-27 04:51:22,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 132.83333333333334) internal successors, (797), 6 states have internal predecessors, (797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:22,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:51:22,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:51:22,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 04:51:22,212 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 18 more)] === [2023-08-27 04:51:22,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:51:22,213 INFO L85 PathProgramCache]: Analyzing trace with hash 482269030, now seen corresponding path program 1 times [2023-08-27 04:51:22,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:51:22,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023554181] [2023-08-27 04:51:22,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:51:22,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:51:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:51:22,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:51:22,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:51:22,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023554181] [2023-08-27 04:51:22,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023554181] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:51:22,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:51:22,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 04:51:22,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429932107] [2023-08-27 04:51:22,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:51:22,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 04:51:22,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:51:22,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 04:51:22,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 04:51:22,272 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 312 [2023-08-27 04:51:22,273 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 218 flow. Second operand has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:22,273 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:51:22,273 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 312 [2023-08-27 04:51:22,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:51:22,387 INFO L124 PetriNetUnfolderBase]: 194/494 cut-off events. [2023-08-27 04:51:22,387 INFO L125 PetriNetUnfolderBase]: For 185/186 co-relation queries the response was YES. [2023-08-27 04:51:22,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1392 conditions, 494 events. 194/494 cut-off events. For 185/186 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2280 event pairs, 68 based on Foata normal form. 1/461 useless extension candidates. Maximal degree in co-relation 1375. Up to 177 conditions per place. [2023-08-27 04:51:22,390 INFO L140 encePairwiseOnDemand]: 308/312 looper letters, 66 selfloop transitions, 3 changer transitions 7/82 dead transitions. [2023-08-27 04:51:22,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 82 transitions, 474 flow [2023-08-27 04:51:22,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 04:51:22,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 04:51:22,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 640 transitions. [2023-08-27 04:51:22,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128 [2023-08-27 04:51:22,393 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 640 transitions. [2023-08-27 04:51:22,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 640 transitions. [2023-08-27 04:51:22,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:51:22,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 640 transitions. [2023-08-27 04:51:22,395 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:22,397 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:22,397 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:22,397 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 218 flow. Second operand 4 states and 640 transitions. [2023-08-27 04:51:22,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 82 transitions, 474 flow [2023-08-27 04:51:22,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 82 transitions, 462 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 04:51:22,400 INFO L231 Difference]: Finished difference. Result has 54 places, 49 transitions, 210 flow [2023-08-27 04:51:22,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=54, PETRI_TRANSITIONS=49} [2023-08-27 04:51:22,401 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -1 predicate places. [2023-08-27 04:51:22,401 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 49 transitions, 210 flow [2023-08-27 04:51:22,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:22,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:51:22,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:51:22,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 04:51:22,402 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 18 more)] === [2023-08-27 04:51:22,402 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:51:22,402 INFO L85 PathProgramCache]: Analyzing trace with hash 482269015, now seen corresponding path program 1 times [2023-08-27 04:51:22,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:51:22,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859105709] [2023-08-27 04:51:22,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:51:22,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:51:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:51:22,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:51:22,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:51:22,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859105709] [2023-08-27 04:51:22,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859105709] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:51:22,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:51:22,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 04:51:22,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259540125] [2023-08-27 04:51:22,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:51:22,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 04:51:22,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:51:22,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 04:51:22,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 04:51:22,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 312 [2023-08-27 04:51:22,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 49 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:22,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:51:22,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 312 [2023-08-27 04:51:22,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:51:22,599 INFO L124 PetriNetUnfolderBase]: 174/451 cut-off events. [2023-08-27 04:51:22,599 INFO L125 PetriNetUnfolderBase]: For 151/152 co-relation queries the response was YES. [2023-08-27 04:51:22,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1297 conditions, 451 events. 174/451 cut-off events. For 151/152 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2003 event pairs, 63 based on Foata normal form. 1/442 useless extension candidates. Maximal degree in co-relation 1280. Up to 171 conditions per place. [2023-08-27 04:51:22,601 INFO L140 encePairwiseOnDemand]: 308/312 looper letters, 51 selfloop transitions, 3 changer transitions 23/81 dead transitions. [2023-08-27 04:51:22,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 81 transitions, 464 flow [2023-08-27 04:51:22,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 04:51:22,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 04:51:22,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 639 transitions. [2023-08-27 04:51:22,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120192307692307 [2023-08-27 04:51:22,604 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 639 transitions. [2023-08-27 04:51:22,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 639 transitions. [2023-08-27 04:51:22,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:51:22,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 639 transitions. [2023-08-27 04:51:22,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 159.75) internal successors, (639), 4 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:22,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:22,608 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:22,608 INFO L175 Difference]: Start difference. First operand has 54 places, 49 transitions, 210 flow. Second operand 4 states and 639 transitions. [2023-08-27 04:51:22,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 81 transitions, 464 flow [2023-08-27 04:51:22,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 81 transitions, 458 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 04:51:22,610 INFO L231 Difference]: Finished difference. Result has 53 places, 38 transitions, 156 flow [2023-08-27 04:51:22,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=53, PETRI_TRANSITIONS=38} [2023-08-27 04:51:22,612 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -2 predicate places. [2023-08-27 04:51:22,612 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 38 transitions, 156 flow [2023-08-27 04:51:22,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:22,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:51:22,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:51:22,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 04:51:22,613 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 18 more)] === [2023-08-27 04:51:22,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:51:22,613 INFO L85 PathProgramCache]: Analyzing trace with hash 498445760, now seen corresponding path program 1 times [2023-08-27 04:51:22,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:51:22,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738978929] [2023-08-27 04:51:22,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:51:22,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:51:22,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:51:22,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:51:22,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:51:22,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738978929] [2023-08-27 04:51:22,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738978929] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:51:22,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:51:22,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 04:51:22,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096783111] [2023-08-27 04:51:22,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:51:22,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 04:51:22,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:51:22,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 04:51:22,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 04:51:22,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 312 [2023-08-27 04:51:22,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 38 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:22,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:51:22,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 312 [2023-08-27 04:51:22,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:51:22,779 INFO L124 PetriNetUnfolderBase]: 56/228 cut-off events. [2023-08-27 04:51:22,779 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2023-08-27 04:51:22,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 228 events. 56/228 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 893 event pairs, 23 based on Foata normal form. 36/264 useless extension candidates. Maximal degree in co-relation 644. Up to 111 conditions per place. [2023-08-27 04:51:22,780 INFO L140 encePairwiseOnDemand]: 294/312 looper letters, 26 selfloop transitions, 20 changer transitions 9/57 dead transitions. [2023-08-27 04:51:22,780 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 353 flow [2023-08-27 04:51:22,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 04:51:22,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 04:51:22,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 413 transitions. [2023-08-27 04:51:22,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4412393162393162 [2023-08-27 04:51:22,782 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 413 transitions. [2023-08-27 04:51:22,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 413 transitions. [2023-08-27 04:51:22,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:51:22,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 413 transitions. [2023-08-27 04:51:22,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:22,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:22,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:22,786 INFO L175 Difference]: Start difference. First operand has 53 places, 38 transitions, 156 flow. Second operand 3 states and 413 transitions. [2023-08-27 04:51:22,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 353 flow [2023-08-27 04:51:22,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 57 transitions, 335 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-27 04:51:22,789 INFO L231 Difference]: Finished difference. Result has 47 places, 42 transitions, 238 flow [2023-08-27 04:51:22,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=47, PETRI_TRANSITIONS=42} [2023-08-27 04:51:22,790 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -8 predicate places. [2023-08-27 04:51:22,790 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 42 transitions, 238 flow [2023-08-27 04:51:22,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:22,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:51:22,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:51:22,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 04:51:22,791 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 18 more)] === [2023-08-27 04:51:22,791 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:51:22,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1728139470, now seen corresponding path program 1 times [2023-08-27 04:51:22,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:51:22,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745237693] [2023-08-27 04:51:22,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:51:22,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:51:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:51:23,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:51:23,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:51:23,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745237693] [2023-08-27 04:51:23,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745237693] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:51:23,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:51:23,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 04:51:23,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442788699] [2023-08-27 04:51:23,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:51:23,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 04:51:23,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:51:23,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 04:51:23,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 04:51:23,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 312 [2023-08-27 04:51:23,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 42 transitions, 238 flow. Second operand has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:23,051 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:51:23,051 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 312 [2023-08-27 04:51:23,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:51:23,114 INFO L124 PetriNetUnfolderBase]: 46/195 cut-off events. [2023-08-27 04:51:23,115 INFO L125 PetriNetUnfolderBase]: For 188/190 co-relation queries the response was YES. [2023-08-27 04:51:23,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 699 conditions, 195 events. 46/195 cut-off events. For 188/190 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 711 event pairs, 10 based on Foata normal form. 4/199 useless extension candidates. Maximal degree in co-relation 683. Up to 177 conditions per place. [2023-08-27 04:51:23,116 INFO L140 encePairwiseOnDemand]: 308/312 looper letters, 37 selfloop transitions, 4 changer transitions 5/48 dead transitions. [2023-08-27 04:51:23,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 48 transitions, 361 flow [2023-08-27 04:51:23,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 04:51:23,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 04:51:23,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 466 transitions. [2023-08-27 04:51:23,118 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3733974358974359 [2023-08-27 04:51:23,118 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 466 transitions. [2023-08-27 04:51:23,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 466 transitions. [2023-08-27 04:51:23,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:51:23,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 466 transitions. [2023-08-27 04:51:23,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:23,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:23,122 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:23,122 INFO L175 Difference]: Start difference. First operand has 47 places, 42 transitions, 238 flow. Second operand 4 states and 466 transitions. [2023-08-27 04:51:23,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 48 transitions, 361 flow [2023-08-27 04:51:23,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 48 transitions, 330 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 04:51:23,124 INFO L231 Difference]: Finished difference. Result has 46 places, 37 transitions, 192 flow [2023-08-27 04:51:23,124 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=46, PETRI_TRANSITIONS=37} [2023-08-27 04:51:23,125 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -9 predicate places. [2023-08-27 04:51:23,125 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 37 transitions, 192 flow [2023-08-27 04:51:23,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:23,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:51:23,125 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:51:23,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 04:51:23,125 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 18 more)] === [2023-08-27 04:51:23,126 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:51:23,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1029870401, now seen corresponding path program 1 times [2023-08-27 04:51:23,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:51:23,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300799494] [2023-08-27 04:51:23,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:51:23,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:51:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:51:23,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:51:23,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:51:23,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300799494] [2023-08-27 04:51:23,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300799494] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:51:23,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:51:23,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 04:51:23,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775493766] [2023-08-27 04:51:23,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:51:23,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 04:51:23,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:51:23,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 04:51:23,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-27 04:51:23,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 312 [2023-08-27 04:51:23,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 37 transitions, 192 flow. Second operand has 6 states, 6 states have (on average 110.83333333333333) internal successors, (665), 6 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:23,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:51:23,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 312 [2023-08-27 04:51:23,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:51:23,350 INFO L124 PetriNetUnfolderBase]: 18/104 cut-off events. [2023-08-27 04:51:23,350 INFO L125 PetriNetUnfolderBase]: For 123/123 co-relation queries the response was YES. [2023-08-27 04:51:23,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 354 conditions, 104 events. 18/104 cut-off events. For 123/123 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 251 event pairs, 1 based on Foata normal form. 11/115 useless extension candidates. Maximal degree in co-relation 339. Up to 65 conditions per place. [2023-08-27 04:51:23,351 INFO L140 encePairwiseOnDemand]: 308/312 looper letters, 31 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2023-08-27 04:51:23,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 41 transitions, 291 flow [2023-08-27 04:51:23,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 04:51:23,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 04:51:23,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 460 transitions. [2023-08-27 04:51:23,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3685897435897436 [2023-08-27 04:51:23,353 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 460 transitions. [2023-08-27 04:51:23,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 460 transitions. [2023-08-27 04:51:23,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:51:23,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 460 transitions. [2023-08-27 04:51:23,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 115.0) internal successors, (460), 4 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:23,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:23,357 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 312.0) internal successors, (1560), 5 states have internal predecessors, (1560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:23,358 INFO L175 Difference]: Start difference. First operand has 46 places, 37 transitions, 192 flow. Second operand 4 states and 460 transitions. [2023-08-27 04:51:23,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 41 transitions, 291 flow [2023-08-27 04:51:23,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 41 transitions, 275 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-27 04:51:23,363 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 188 flow [2023-08-27 04:51:23,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2023-08-27 04:51:23,363 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -13 predicate places. [2023-08-27 04:51:23,363 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 188 flow [2023-08-27 04:51:23,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 110.83333333333333) internal successors, (665), 6 states have internal predecessors, (665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:23,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 04:51:23,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:51:23,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 04:51:23,364 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr1ASSERT_VIOLATIONASSERT, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 18 more)] === [2023-08-27 04:51:23,365 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 04:51:23,365 INFO L85 PathProgramCache]: Analyzing trace with hash -1812279423, now seen corresponding path program 1 times [2023-08-27 04:51:23,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 04:51:23,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535567129] [2023-08-27 04:51:23,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 04:51:23,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 04:51:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 04:51:23,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 04:51:23,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 04:51:23,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535567129] [2023-08-27 04:51:23,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535567129] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 04:51:23,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 04:51:23,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 04:51:23,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525734562] [2023-08-27 04:51:23,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 04:51:23,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 04:51:23,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 04:51:23,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 04:51:23,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 04:51:23,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 312 [2023-08-27 04:51:23,525 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:23,525 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 04:51:23,525 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 312 [2023-08-27 04:51:23,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 04:51:23,596 INFO L124 PetriNetUnfolderBase]: 19/103 cut-off events. [2023-08-27 04:51:23,596 INFO L125 PetriNetUnfolderBase]: For 111/111 co-relation queries the response was YES. [2023-08-27 04:51:23,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 349 conditions, 103 events. 19/103 cut-off events. For 111/111 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 251 event pairs, 7 based on Foata normal form. 2/105 useless extension candidates. Maximal degree in co-relation 334. Up to 76 conditions per place. [2023-08-27 04:51:23,596 INFO L140 encePairwiseOnDemand]: 306/312 looper letters, 0 selfloop transitions, 0 changer transitions 42/42 dead transitions. [2023-08-27 04:51:23,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 42 transitions, 301 flow [2023-08-27 04:51:23,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 04:51:23,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 04:51:23,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 859 transitions. [2023-08-27 04:51:23,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45886752136752135 [2023-08-27 04:51:23,599 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 859 transitions. [2023-08-27 04:51:23,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 859 transitions. [2023-08-27 04:51:23,600 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 04:51:23,600 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 859 transitions. [2023-08-27 04:51:23,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 143.16666666666666) internal successors, (859), 6 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:23,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 312.0) internal successors, (2184), 7 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:23,605 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 312.0) internal successors, (2184), 7 states have internal predecessors, (2184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:23,605 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 188 flow. Second operand 6 states and 859 transitions. [2023-08-27 04:51:23,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 42 transitions, 301 flow [2023-08-27 04:51:23,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 42 transitions, 291 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 04:51:23,606 INFO L231 Difference]: Finished difference. Result has 43 places, 0 transitions, 0 flow [2023-08-27 04:51:23,606 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=43, PETRI_TRANSITIONS=0} [2023-08-27 04:51:23,607 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, -12 predicate places. [2023-08-27 04:51:23,607 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 0 transitions, 0 flow [2023-08-27 04:51:23,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.0) internal successors, (715), 5 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 04:51:23,609 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (20 of 21 remaining) [2023-08-27 04:51:23,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT (19 of 21 remaining) [2023-08-27 04:51:23,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (18 of 21 remaining) [2023-08-27 04:51:23,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONASSERT (17 of 21 remaining) [2023-08-27 04:51:23,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 21 remaining) [2023-08-27 04:51:23,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-27 04:51:23,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-27 04:51:23,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-08-27 04:51:23,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-08-27 04:51:23,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-08-27 04:51:23,610 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-08-27 04:51:23,611 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-27 04:51:23,611 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-27 04:51:23,611 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-27 04:51:23,611 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-27 04:51:23,611 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-27 04:51:23,611 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-27 04:51:23,611 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-27 04:51:23,611 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-27 04:51:23,611 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-27 04:51:23,612 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-27 04:51:23,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 04:51:23,612 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 04:51:23,616 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 04:51:23,616 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 04:51:23,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 04:51:23 BasicIcfg [2023-08-27 04:51:23,619 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 04:51:23,619 INFO L158 Benchmark]: Toolchain (without parser) took 9013.97ms. Allocated memory was 383.8MB in the beginning and 509.6MB in the end (delta: 125.8MB). Free memory was 358.7MB in the beginning and 209.5MB in the end (delta: 149.1MB). Peak memory consumption was 275.5MB. Max. memory is 16.0GB. [2023-08-27 04:51:23,619 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 383.8MB. Free memory was 361.7MB in the beginning and 361.6MB in the end (delta: 86.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 04:51:23,620 INFO L158 Benchmark]: CACSL2BoogieTranslator took 396.34ms. Allocated memory is still 383.8MB. Free memory was 358.7MB in the beginning and 338.2MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 04:51:23,620 INFO L158 Benchmark]: Boogie Procedure Inliner took 66.93ms. Allocated memory is still 383.8MB. Free memory was 338.2MB in the beginning and 336.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 04:51:23,620 INFO L158 Benchmark]: Boogie Preprocessor took 47.77ms. Allocated memory is still 383.8MB. Free memory was 336.1MB in the beginning and 334.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 04:51:23,620 INFO L158 Benchmark]: RCFGBuilder took 530.84ms. Allocated memory is still 383.8MB. Free memory was 334.6MB in the beginning and 316.7MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 04:51:23,621 INFO L158 Benchmark]: TraceAbstraction took 7966.10ms. Allocated memory was 383.8MB in the beginning and 509.6MB in the end (delta: 125.8MB). Free memory was 316.2MB in the beginning and 209.5MB in the end (delta: 106.7MB). Peak memory consumption was 233.5MB. Max. memory is 16.0GB. [2023-08-27 04:51:23,622 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 383.8MB. Free memory was 361.7MB in the beginning and 361.6MB in the end (delta: 86.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 396.34ms. Allocated memory is still 383.8MB. Free memory was 358.7MB in the beginning and 338.2MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 66.93ms. Allocated memory is still 383.8MB. Free memory was 338.2MB in the beginning and 336.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 47.77ms. Allocated memory is still 383.8MB. Free memory was 336.1MB in the beginning and 334.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 530.84ms. Allocated memory is still 383.8MB. Free memory was 334.6MB in the beginning and 316.7MB in the end (delta: 17.8MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 7966.10ms. Allocated memory was 383.8MB in the beginning and 509.6MB in the end (delta: 125.8MB). Free memory was 316.2MB in the beginning and 209.5MB in the end (delta: 106.7MB). Peak memory consumption was 233.5MB. 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: 4.0s, 151 PlacesBefore, 55 PlacesAfterwards, 155 TransitionsBefore, 57 TransitionsAfterwards, 6762 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 99 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 2 ChoiceCompositions, 149 TotalNumberOfCompositions, 21158 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7389, independent: 6845, independent conditional: 0, independent unconditional: 6845, dependent: 544, dependent conditional: 0, dependent unconditional: 544, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3766, independent: 3669, independent conditional: 0, independent unconditional: 3669, dependent: 97, dependent conditional: 0, dependent unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7389, independent: 3176, independent conditional: 0, independent unconditional: 3176, dependent: 447, dependent conditional: 0, dependent unconditional: 447, unknown: 3766, unknown conditional: 0, unknown unconditional: 3766] , Statistics on independence cache: Total cache size (in pairs): 241, Positive cache size: 182, Positive conditional cache size: 0, Positive unconditional cache size: 182, Negative cache size: 59, Negative conditional cache size: 0, Negative unconditional cache size: 59, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 18]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 691]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 691]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 699]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 699]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 207 locations, 21 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.9s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 431 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 431 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 116 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1381 IncrementalHoareTripleChecker+Invalid, 1497 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 116 mSolverCounterUnsat, 10 mSDtfsCounter, 1381 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=238occurred in iteration=10, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 181 NumberOfCodeBlocks, 181 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 168 ConstructedInterpolants, 0 QuantifiedInterpolants, 812 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 04:51:23,643 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...