/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 -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/28-race_reach_01-simple_racing.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:27:12,849 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:27:12,921 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 [2023-08-26 22:27:12,925 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:27:12,925 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:27:12,950 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:27:12,951 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:27:12,955 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:27:12,955 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:27:12,958 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:27:12,958 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:27:12,958 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:27:12,958 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:27:12,959 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:27:12,959 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:27:12,959 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:27:12,960 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:27:12,960 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:27:12,960 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:27:12,960 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:27:12,960 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:27:12,961 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:27:12,961 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:27:12,961 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:27:12,961 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:27:12,962 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:27:12,962 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:27:12,962 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:27:12,962 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:27:12,962 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:27:12,963 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:27:12,963 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:27:12,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:27:12,963 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:27:12,963 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:27:12,963 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:27:13,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:27:13,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:27:13,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:27:13,229 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:27:13,229 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:27:13,230 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2023-08-26 22:27:14,120 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:27:14,307 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:27:14,308 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2023-08-26 22:27:14,321 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0511153c0/84157a161ac24b01a2c3940522161750/FLAGec4591e8b [2023-08-26 22:27:14,333 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0511153c0/84157a161ac24b01a2c3940522161750 [2023-08-26 22:27:14,336 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:27:14,337 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:27:14,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:27:14,339 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:27:14,341 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:27:14,342 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:27:14" (1/1) ... [2023-08-26 22:27:14,342 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@56b4f42a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:14, skipping insertion in model container [2023-08-26 22:27:14,342 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:27:14" (1/1) ... [2023-08-26 22:27:14,380 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:27:14,619 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:27:14,631 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:27:14,654 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:27:14,656 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:27:14,670 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:27:14,693 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:27:14,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:14 WrapperNode [2023-08-26 22:27:14,694 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:27:14,694 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:27:14,695 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:27:14,695 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:27:14,698 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:14" (1/1) ... [2023-08-26 22:27:14,707 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:14" (1/1) ... [2023-08-26 22:27:14,719 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 88 [2023-08-26 22:27:14,719 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:27:14,720 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:27:14,720 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:27:14,720 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:27:14,725 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:14" (1/1) ... [2023-08-26 22:27:14,725 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:14" (1/1) ... [2023-08-26 22:27:14,727 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:14" (1/1) ... [2023-08-26 22:27:14,727 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:14" (1/1) ... [2023-08-26 22:27:14,731 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:14" (1/1) ... [2023-08-26 22:27:14,733 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:14" (1/1) ... [2023-08-26 22:27:14,734 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:14" (1/1) ... [2023-08-26 22:27:14,735 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:14" (1/1) ... [2023-08-26 22:27:14,737 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:27:14,737 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:27:14,737 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:27:14,737 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:27:14,738 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:14" (1/1) ... [2023-08-26 22:27:14,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:27:14,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:27:14,765 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) [2023-08-26 22:27:14,771 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 [2023-08-26 22:27:14,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:27:14,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:27:14,791 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:27:14,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:27:14,791 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:27:14,791 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 22:27:14,791 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 22:27:14,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:27:14,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:27:14,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:27:14,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:27:14,792 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 22:27:14,870 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:27:14,871 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:27:15,040 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:27:15,044 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:27:15,044 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-26 22:27:15,046 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:27:15 BoogieIcfgContainer [2023-08-26 22:27:15,046 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:27:15,047 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:27:15,047 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:27:15,049 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:27:15,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:27:14" (1/3) ... [2023-08-26 22:27:15,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d2a6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:27:15, skipping insertion in model container [2023-08-26 22:27:15,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:27:14" (2/3) ... [2023-08-26 22:27:15,050 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38d2a6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:27:15, skipping insertion in model container [2023-08-26 22:27:15,050 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:27:15" (3/3) ... [2023-08-26 22:27:15,051 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2023-08-26 22:27:15,062 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:27:15,062 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-26 22:27:15,062 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:27:15,097 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 22:27:15,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 128 transitions, 264 flow [2023-08-26 22:27:15,169 INFO L124 PetriNetUnfolderBase]: 19/167 cut-off events. [2023-08-26 22:27:15,169 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:27:15,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 167 events. 19/167 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 395 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2023-08-26 22:27:15,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 128 transitions, 264 flow [2023-08-26 22:27:15,176 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 116 places, 125 transitions, 258 flow [2023-08-26 22:27:15,178 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:27:15,183 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 116 places, 125 transitions, 258 flow [2023-08-26 22:27:15,185 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 116 places, 125 transitions, 258 flow [2023-08-26 22:27:15,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 125 transitions, 258 flow [2023-08-26 22:27:15,205 INFO L124 PetriNetUnfolderBase]: 18/164 cut-off events. [2023-08-26 22:27:15,206 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:27:15,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 164 events. 18/164 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 393 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 84. Up to 4 conditions per place. [2023-08-26 22:27:15,208 INFO L119 LiptonReduction]: Number of co-enabled transitions 3528 [2023-08-26 22:27:17,702 INFO L134 LiptonReduction]: Checked pairs total: 6210 [2023-08-26 22:27:17,703 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-08-26 22:27:17,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:27:17,723 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;@10288a9d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:27:17,723 INFO L358 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2023-08-26 22:27:17,726 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:27:17,726 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-26 22:27:17,727 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:27:17,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:17,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:27:17,727 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-26 22:27:17,731 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:17,731 INFO L85 PathProgramCache]: Analyzing trace with hash 15133548, now seen corresponding path program 1 times [2023-08-26 22:27:17,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:17,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166452466] [2023-08-26 22:27:17,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:17,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:17,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:17,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166452466] [2023-08-26 22:27:17,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166452466] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:27:17,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:27:17,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:27:17,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392677328] [2023-08-26 22:27:17,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:27:17,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:27:17,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:17,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:27:17,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:27:17,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 241 [2023-08-26 22:27:17,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 43 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:17,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:17,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 241 [2023-08-26 22:27:17,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:18,041 INFO L124 PetriNetUnfolderBase]: 108/270 cut-off events. [2023-08-26 22:27:18,041 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:27:18,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 532 conditions, 270 events. 108/270 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1386 event pairs, 0 based on Foata normal form. 23/213 useless extension candidates. Maximal degree in co-relation 488. Up to 229 conditions per place. [2023-08-26 22:27:18,044 INFO L140 encePairwiseOnDemand]: 225/241 looper letters, 37 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-26 22:27:18,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 42 transitions, 170 flow [2023-08-26 22:27:18,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:27:18,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:27:18,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2023-08-26 22:27:18,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5172890733056709 [2023-08-26 22:27:18,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 374 transitions. [2023-08-26 22:27:18,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 374 transitions. [2023-08-26 22:27:18,054 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:18,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 374 transitions. [2023-08-26 22:27:18,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:18,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:18,061 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:18,062 INFO L175 Difference]: Start difference. First operand has 36 places, 43 transitions, 94 flow. Second operand 3 states and 374 transitions. [2023-08-26 22:27:18,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 42 transitions, 170 flow [2023-08-26 22:27:18,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 42 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:27:18,066 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 74 flow [2023-08-26 22:27:18,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2023-08-26 22:27:18,069 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -1 predicate places. [2023-08-26 22:27:18,069 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 74 flow [2023-08-26 22:27:18,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:18,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:18,069 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 22:27:18,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:27:18,070 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2023-08-26 22:27:18,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:18,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1658476156, now seen corresponding path program 1 times [2023-08-26 22:27:18,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:18,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556047659] [2023-08-26 22:27:18,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:18,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:27:18,088 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:27:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:27:18,109 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:27:18,109 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:27:18,110 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2023-08-26 22:27:18,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 14 remaining) [2023-08-26 22:27:18,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2023-08-26 22:27:18,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2023-08-26 22:27:18,111 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (9 of 14 remaining) [2023-08-26 22:27:18,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2023-08-26 22:27:18,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2023-08-26 22:27:18,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2023-08-26 22:27:18,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2023-08-26 22:27:18,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2023-08-26 22:27:18,112 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2023-08-26 22:27:18,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2023-08-26 22:27:18,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2023-08-26 22:27:18,113 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2023-08-26 22:27:18,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 22:27:18,113 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-26 22:27:18,115 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:27:18,115 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 22:27:18,130 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 22:27:18,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 166 transitions, 350 flow [2023-08-26 22:27:18,152 INFO L124 PetriNetUnfolderBase]: 34/281 cut-off events. [2023-08-26 22:27:18,152 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:27:18,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 281 events. 34/281 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 833 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 169. Up to 8 conditions per place. [2023-08-26 22:27:18,154 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 166 transitions, 350 flow [2023-08-26 22:27:18,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 166 transitions, 350 flow [2023-08-26 22:27:18,155 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:27:18,155 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 166 transitions, 350 flow [2023-08-26 22:27:18,155 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 166 transitions, 350 flow [2023-08-26 22:27:18,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 166 transitions, 350 flow [2023-08-26 22:27:18,171 INFO L124 PetriNetUnfolderBase]: 34/281 cut-off events. [2023-08-26 22:27:18,171 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:27:18,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 281 events. 34/281 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 833 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 169. Up to 8 conditions per place. [2023-08-26 22:27:18,177 INFO L119 LiptonReduction]: Number of co-enabled transitions 11016 [2023-08-26 22:27:20,602 INFO L134 LiptonReduction]: Checked pairs total: 26927 [2023-08-26 22:27:20,602 INFO L136 LiptonReduction]: Total number of compositions: 134 [2023-08-26 22:27:20,604 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:27:20,609 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;@10288a9d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:27:20,610 INFO L358 AbstractCegarLoop]: Starting to check reachability of 18 error locations. [2023-08-26 22:27:20,611 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:27:20,612 INFO L124 PetriNetUnfolderBase]: 4/17 cut-off events. [2023-08-26 22:27:20,612 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:27:20,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:20,613 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:27:20,616 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:27:20,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:20,616 INFO L85 PathProgramCache]: Analyzing trace with hash 25560259, now seen corresponding path program 1 times [2023-08-26 22:27:20,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:20,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591055781] [2023-08-26 22:27:20,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:20,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:20,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:20,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:20,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:20,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591055781] [2023-08-26 22:27:20,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591055781] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:27:20,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:27:20,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:27:20,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328873023] [2023-08-26 22:27:20,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:27:20,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:27:20,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:20,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:27:20,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:27:20,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 300 [2023-08-26 22:27:20,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 71 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:20,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:20,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 300 [2023-08-26 22:27:20,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:21,163 INFO L124 PetriNetUnfolderBase]: 5189/8481 cut-off events. [2023-08-26 22:27:21,164 INFO L125 PetriNetUnfolderBase]: For 73/73 co-relation queries the response was YES. [2023-08-26 22:27:21,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16804 conditions, 8481 events. 5189/8481 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 377. Compared 56301 event pairs, 4952 based on Foata normal form. 1036/6540 useless extension candidates. Maximal degree in co-relation 11269. Up to 8220 conditions per place. [2023-08-26 22:27:21,201 INFO L140 encePairwiseOnDemand]: 279/300 looper letters, 60 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2023-08-26 22:27:21,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 69 transitions, 280 flow [2023-08-26 22:27:21,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:27:21,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:27:21,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2023-08-26 22:27:21,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5466666666666666 [2023-08-26 22:27:21,206 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2023-08-26 22:27:21,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2023-08-26 22:27:21,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:21,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2023-08-26 22:27:21,208 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:21,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:21,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:21,211 INFO L175 Difference]: Start difference. First operand has 58 places, 71 transitions, 160 flow. Second operand 3 states and 492 transitions. [2023-08-26 22:27:21,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 69 transitions, 280 flow [2023-08-26 22:27:21,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 69 transitions, 280 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:27:21,214 INFO L231 Difference]: Finished difference. Result has 60 places, 55 transitions, 142 flow [2023-08-26 22:27:21,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=60, PETRI_TRANSITIONS=55} [2023-08-26 22:27:21,215 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 2 predicate places. [2023-08-26 22:27:21,216 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 55 transitions, 142 flow [2023-08-26 22:27:21,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:21,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:21,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:27:21,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 22:27:21,217 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:27:21,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:21,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1104108573, now seen corresponding path program 1 times [2023-08-26 22:27:21,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:21,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702369081] [2023-08-26 22:27:21,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:21,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:21,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:21,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:21,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:21,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702369081] [2023-08-26 22:27:21,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702369081] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:27:21,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:27:21,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:27:21,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708593415] [2023-08-26 22:27:21,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:27:21,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:27:21,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:21,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:27:21,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:27:21,304 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 300 [2023-08-26 22:27:21,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 55 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:21,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:21,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 300 [2023-08-26 22:27:21,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:21,674 INFO L124 PetriNetUnfolderBase]: 4635/7615 cut-off events. [2023-08-26 22:27:21,674 INFO L125 PetriNetUnfolderBase]: For 463/463 co-relation queries the response was YES. [2023-08-26 22:27:21,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15834 conditions, 7615 events. 4635/7615 cut-off events. For 463/463 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 49150 event pairs, 1959 based on Foata normal form. 0/5303 useless extension candidates. Maximal degree in co-relation 15746. Up to 7002 conditions per place. [2023-08-26 22:27:21,717 INFO L140 encePairwiseOnDemand]: 291/300 looper letters, 65 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2023-08-26 22:27:21,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 75 transitions, 334 flow [2023-08-26 22:27:21,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:27:21,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:27:21,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2023-08-26 22:27:21,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5233333333333333 [2023-08-26 22:27:21,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2023-08-26 22:27:21,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2023-08-26 22:27:21,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:21,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2023-08-26 22:27:21,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:21,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:21,775 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:21,775 INFO L175 Difference]: Start difference. First operand has 60 places, 55 transitions, 142 flow. Second operand 3 states and 471 transitions. [2023-08-26 22:27:21,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 75 transitions, 334 flow [2023-08-26 22:27:21,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 75 transitions, 331 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:27:21,778 INFO L231 Difference]: Finished difference. Result has 62 places, 57 transitions, 169 flow [2023-08-26 22:27:21,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=62, PETRI_TRANSITIONS=57} [2023-08-26 22:27:21,778 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 4 predicate places. [2023-08-26 22:27:21,778 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 57 transitions, 169 flow [2023-08-26 22:27:21,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:21,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:21,779 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:27:21,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 22:27:21,779 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:27:21,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:21,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1819667061, now seen corresponding path program 1 times [2023-08-26 22:27:21,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:21,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701482995] [2023-08-26 22:27:21,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:21,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:21,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:21,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:27:21,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:21,804 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701482995] [2023-08-26 22:27:21,804 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701482995] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:27:21,804 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:27:21,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:27:21,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889290091] [2023-08-26 22:27:21,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:27:21,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:27:21,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:21,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:27:21,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:27:21,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 300 [2023-08-26 22:27:21,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 57 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:21,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:21,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 300 [2023-08-26 22:27:21,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:22,117 INFO L124 PetriNetUnfolderBase]: 4307/6972 cut-off events. [2023-08-26 22:27:22,117 INFO L125 PetriNetUnfolderBase]: For 708/708 co-relation queries the response was YES. [2023-08-26 22:27:22,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15720 conditions, 6972 events. 4307/6972 cut-off events. For 708/708 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 46396 event pairs, 963 based on Foata normal form. 0/5343 useless extension candidates. Maximal degree in co-relation 10069. Up to 5496 conditions per place. [2023-08-26 22:27:22,144 INFO L140 encePairwiseOnDemand]: 296/300 looper letters, 74 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2023-08-26 22:27:22,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 85 transitions, 397 flow [2023-08-26 22:27:22,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:27:22,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:27:22,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2023-08-26 22:27:22,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5322222222222223 [2023-08-26 22:27:22,146 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2023-08-26 22:27:22,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2023-08-26 22:27:22,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:22,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2023-08-26 22:27:22,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:22,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:22,149 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:22,149 INFO L175 Difference]: Start difference. First operand has 62 places, 57 transitions, 169 flow. Second operand 3 states and 479 transitions. [2023-08-26 22:27:22,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 85 transitions, 397 flow [2023-08-26 22:27:22,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 392 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:27:22,151 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 178 flow [2023-08-26 22:27:22,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2023-08-26 22:27:22,151 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 5 predicate places. [2023-08-26 22:27:22,151 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 178 flow [2023-08-26 22:27:22,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:22,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:22,152 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:27:22,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 22:27:22,152 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:27:22,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:22,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1819667090, now seen corresponding path program 1 times [2023-08-26 22:27:22,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:22,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513102702] [2023-08-26 22:27:22,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:22,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:22,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:22,175 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:22,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:22,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513102702] [2023-08-26 22:27:22,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513102702] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:27:22,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:27:22,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:27:22,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265439071] [2023-08-26 22:27:22,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:27:22,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:27:22,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:22,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:27:22,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:27:22,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 300 [2023-08-26 22:27:22,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:22,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:22,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 300 [2023-08-26 22:27:22,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:22,470 INFO L124 PetriNetUnfolderBase]: 3979/6466 cut-off events. [2023-08-26 22:27:22,470 INFO L125 PetriNetUnfolderBase]: For 2159/2159 co-relation queries the response was YES. [2023-08-26 22:27:22,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14958 conditions, 6466 events. 3979/6466 cut-off events. For 2159/2159 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 43142 event pairs, 816 based on Foata normal form. 178/5266 useless extension candidates. Maximal degree in co-relation 10871. Up to 4967 conditions per place. [2023-08-26 22:27:22,495 INFO L140 encePairwiseOnDemand]: 297/300 looper letters, 75 selfloop transitions, 2 changer transitions 0/84 dead transitions. [2023-08-26 22:27:22,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 84 transitions, 400 flow [2023-08-26 22:27:22,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:27:22,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:27:22,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2023-08-26 22:27:22,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.53 [2023-08-26 22:27:22,496 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2023-08-26 22:27:22,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2023-08-26 22:27:22,497 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:22,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2023-08-26 22:27:22,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:22,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:22,499 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 300.0) internal successors, (1200), 4 states have internal predecessors, (1200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:22,499 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 178 flow. Second operand 3 states and 477 transitions. [2023-08-26 22:27:22,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 84 transitions, 400 flow [2023-08-26 22:27:22,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 84 transitions, 396 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:27:22,501 INFO L231 Difference]: Finished difference. Result has 63 places, 56 transitions, 174 flow [2023-08-26 22:27:22,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=63, PETRI_TRANSITIONS=56} [2023-08-26 22:27:22,502 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 5 predicate places. [2023-08-26 22:27:22,502 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 56 transitions, 174 flow [2023-08-26 22:27:22,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:22,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:22,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:27:22,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 22:27:22,503 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:27:22,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:22,503 INFO L85 PathProgramCache]: Analyzing trace with hash -758059898, now seen corresponding path program 1 times [2023-08-26 22:27:22,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:22,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687068771] [2023-08-26 22:27:22,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:22,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:22,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:22,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:22,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:22,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687068771] [2023-08-26 22:27:22,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687068771] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:27:22,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:27:22,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:27:22,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655938490] [2023-08-26 22:27:22,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:27:22,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:27:22,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:22,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:27:22,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:27:22,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 300 [2023-08-26 22:27:22,545 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 56 transitions, 174 flow. Second operand has 5 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:22,545 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:22,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 300 [2023-08-26 22:27:22,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:23,031 INFO L124 PetriNetUnfolderBase]: 4941/8217 cut-off events. [2023-08-26 22:27:23,031 INFO L125 PetriNetUnfolderBase]: For 2375/2375 co-relation queries the response was YES. [2023-08-26 22:27:23,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18741 conditions, 8217 events. 4941/8217 cut-off events. For 2375/2375 co-relation queries the response was YES. Maximal size of possible extension queue 387. Compared 54236 event pairs, 809 based on Foata normal form. 0/6681 useless extension candidates. Maximal degree in co-relation 16807. Up to 4369 conditions per place. [2023-08-26 22:27:23,057 INFO L140 encePairwiseOnDemand]: 285/300 looper letters, 155 selfloop transitions, 19 changer transitions 0/181 dead transitions. [2023-08-26 22:27:23,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 181 transitions, 900 flow [2023-08-26 22:27:23,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:27:23,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:27:23,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1070 transitions. [2023-08-26 22:27:23,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5095238095238095 [2023-08-26 22:27:23,060 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1070 transitions. [2023-08-26 22:27:23,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1070 transitions. [2023-08-26 22:27:23,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:23,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1070 transitions. [2023-08-26 22:27:23,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 152.85714285714286) internal successors, (1070), 7 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:23,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:23,065 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:23,065 INFO L175 Difference]: Start difference. First operand has 63 places, 56 transitions, 174 flow. Second operand 7 states and 1070 transitions. [2023-08-26 22:27:23,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 181 transitions, 900 flow [2023-08-26 22:27:23,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 181 transitions, 886 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:27:23,068 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 329 flow [2023-08-26 22:27:23,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=329, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2023-08-26 22:27:23,069 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 14 predicate places. [2023-08-26 22:27:23,069 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 329 flow [2023-08-26 22:27:23,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:23,069 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:23,069 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:27:23,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 22:27:23,069 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:27:23,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:23,070 INFO L85 PathProgramCache]: Analyzing trace with hash -758059838, now seen corresponding path program 1 times [2023-08-26 22:27:23,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:23,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101670112] [2023-08-26 22:27:23,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:23,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:23,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:23,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:23,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101670112] [2023-08-26 22:27:23,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101670112] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:27:23,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:27:23,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:27:23,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20298299] [2023-08-26 22:27:23,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:27:23,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:27:23,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:23,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:27:23,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:27:23,107 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 300 [2023-08-26 22:27:23,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 329 flow. Second operand has 5 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:23,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:23,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 300 [2023-08-26 22:27:23,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:23,641 INFO L124 PetriNetUnfolderBase]: 4639/7884 cut-off events. [2023-08-26 22:27:23,641 INFO L125 PetriNetUnfolderBase]: For 6357/6357 co-relation queries the response was YES. [2023-08-26 22:27:23,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21766 conditions, 7884 events. 4639/7884 cut-off events. For 6357/6357 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 52815 event pairs, 751 based on Foata normal form. 303/7601 useless extension candidates. Maximal degree in co-relation 19671. Up to 4495 conditions per place. [2023-08-26 22:27:23,668 INFO L140 encePairwiseOnDemand]: 285/300 looper letters, 158 selfloop transitions, 24 changer transitions 0/189 dead transitions. [2023-08-26 22:27:23,669 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 189 transitions, 1087 flow [2023-08-26 22:27:23,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:27:23,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:27:23,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1067 transitions. [2023-08-26 22:27:23,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.508095238095238 [2023-08-26 22:27:23,671 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1067 transitions. [2023-08-26 22:27:23,671 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1067 transitions. [2023-08-26 22:27:23,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:23,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1067 transitions. [2023-08-26 22:27:23,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 152.42857142857142) internal successors, (1067), 7 states have internal predecessors, (1067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:23,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:23,675 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 300.0) internal successors, (2400), 8 states have internal predecessors, (2400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:23,675 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 329 flow. Second operand 7 states and 1067 transitions. [2023-08-26 22:27:23,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 189 transitions, 1087 flow [2023-08-26 22:27:23,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 189 transitions, 1083 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:27:23,692 INFO L231 Difference]: Finished difference. Result has 81 places, 84 transitions, 519 flow [2023-08-26 22:27:23,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=300, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=519, PETRI_PLACES=81, PETRI_TRANSITIONS=84} [2023-08-26 22:27:23,692 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 23 predicate places. [2023-08-26 22:27:23,692 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 84 transitions, 519 flow [2023-08-26 22:27:23,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.8) internal successors, (649), 5 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:23,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:23,693 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 22:27:23,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 22:27:23,693 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 15 more)] === [2023-08-26 22:27:23,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:23,693 INFO L85 PathProgramCache]: Analyzing trace with hash -648317914, now seen corresponding path program 1 times [2023-08-26 22:27:23,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:23,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780413153] [2023-08-26 22:27:23,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:23,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:23,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:27:23,702 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:27:23,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:27:23,710 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:27:23,710 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:27:23,711 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 18 remaining) [2023-08-26 22:27:23,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 18 remaining) [2023-08-26 22:27:23,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 18 remaining) [2023-08-26 22:27:23,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 18 remaining) [2023-08-26 22:27:23,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (13 of 18 remaining) [2023-08-26 22:27:23,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 18 remaining) [2023-08-26 22:27:23,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 18 remaining) [2023-08-26 22:27:23,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 18 remaining) [2023-08-26 22:27:23,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 18 remaining) [2023-08-26 22:27:23,711 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 18 remaining) [2023-08-26 22:27:23,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 18 remaining) [2023-08-26 22:27:23,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 18 remaining) [2023-08-26 22:27:23,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 18 remaining) [2023-08-26 22:27:23,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 18 remaining) [2023-08-26 22:27:23,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 18 remaining) [2023-08-26 22:27:23,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 18 remaining) [2023-08-26 22:27:23,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 18 remaining) [2023-08-26 22:27:23,712 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 18 remaining) [2023-08-26 22:27:23,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 22:27:23,712 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:27:23,713 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:27:23,713 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 22:27:23,727 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 22:27:23,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 204 transitions, 438 flow [2023-08-26 22:27:23,753 INFO L124 PetriNetUnfolderBase]: 54/436 cut-off events. [2023-08-26 22:27:23,753 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:27:23,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 436 events. 54/436 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1455 event pairs, 1 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 289. Up to 16 conditions per place. [2023-08-26 22:27:23,755 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 204 transitions, 438 flow [2023-08-26 22:27:23,757 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 184 places, 204 transitions, 438 flow [2023-08-26 22:27:23,757 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:27:23,757 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 184 places, 204 transitions, 438 flow [2023-08-26 22:27:23,757 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 184 places, 204 transitions, 438 flow [2023-08-26 22:27:23,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 184 places, 204 transitions, 438 flow [2023-08-26 22:27:23,781 INFO L124 PetriNetUnfolderBase]: 54/436 cut-off events. [2023-08-26 22:27:23,781 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:27:23,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464 conditions, 436 events. 54/436 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1455 event pairs, 1 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 289. Up to 16 conditions per place. [2023-08-26 22:27:23,794 INFO L119 LiptonReduction]: Number of co-enabled transitions 20736 [2023-08-26 22:27:26,378 INFO L134 LiptonReduction]: Checked pairs total: 54330 [2023-08-26 22:27:26,378 INFO L136 LiptonReduction]: Total number of compositions: 159 [2023-08-26 22:27:26,380 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:27:26,380 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;@10288a9d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:27:26,380 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-26 22:27:26,382 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:27:26,382 INFO L124 PetriNetUnfolderBase]: 4/17 cut-off events. [2023-08-26 22:27:26,382 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:27:26,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:26,382 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:27:26,382 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:27:26,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:26,382 INFO L85 PathProgramCache]: Analyzing trace with hash 37904894, now seen corresponding path program 1 times [2023-08-26 22:27:26,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:26,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853991377] [2023-08-26 22:27:26,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:26,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:26,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:26,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:26,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:26,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853991377] [2023-08-26 22:27:26,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853991377] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:27:26,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:27:26,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:27:26,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543272657] [2023-08-26 22:27:26,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:27:26,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:27:26,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:26,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:27:26,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:27:26,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 363 [2023-08-26 22:27:26,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 94 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:26,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:26,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 363 [2023-08-26 22:27:26,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:33,116 INFO L124 PetriNetUnfolderBase]: 107413/153877 cut-off events. [2023-08-26 22:27:33,116 INFO L125 PetriNetUnfolderBase]: For 2429/2429 co-relation queries the response was YES. [2023-08-26 22:27:33,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304456 conditions, 153877 events. 107413/153877 cut-off events. For 2429/2429 co-relation queries the response was YES. Maximal size of possible extension queue 4094. Compared 1165445 event pairs, 69876 based on Foata normal form. 16992/117268 useless extension candidates. Maximal degree in co-relation 26680. Up to 148930 conditions per place. [2023-08-26 22:27:33,756 INFO L140 encePairwiseOnDemand]: 336/363 looper letters, 74 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-26 22:27:33,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 86 transitions, 354 flow [2023-08-26 22:27:33,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:27:33,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:27:33,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 602 transitions. [2023-08-26 22:27:33,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5528007346189164 [2023-08-26 22:27:33,759 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 602 transitions. [2023-08-26 22:27:33,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 602 transitions. [2023-08-26 22:27:33,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:33,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 602 transitions. [2023-08-26 22:27:33,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 200.66666666666666) internal successors, (602), 3 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:33,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:33,763 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:33,764 INFO L175 Difference]: Start difference. First operand has 76 places, 94 transitions, 218 flow. Second operand 3 states and 602 transitions. [2023-08-26 22:27:33,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 86 transitions, 354 flow [2023-08-26 22:27:33,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 86 transitions, 354 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:27:33,766 INFO L231 Difference]: Finished difference. Result has 78 places, 72 transitions, 188 flow [2023-08-26 22:27:33,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=188, PETRI_PLACES=78, PETRI_TRANSITIONS=72} [2023-08-26 22:27:33,768 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 2 predicate places. [2023-08-26 22:27:33,768 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 72 transitions, 188 flow [2023-08-26 22:27:33,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:33,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:33,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:27:33,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 22:27:33,769 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:27:33,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:33,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1022874091, now seen corresponding path program 1 times [2023-08-26 22:27:33,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:33,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453598975] [2023-08-26 22:27:33,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:33,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:33,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:33,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:33,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:33,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453598975] [2023-08-26 22:27:33,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453598975] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:27:33,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:27:33,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:27:33,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202310616] [2023-08-26 22:27:33,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:27:33,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:27:33,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:33,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:27:33,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:27:33,797 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 363 [2023-08-26 22:27:33,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 72 transitions, 188 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:33,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:33,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 363 [2023-08-26 22:27:33,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:44,042 INFO L124 PetriNetUnfolderBase]: 152942/226599 cut-off events. [2023-08-26 22:27:44,042 INFO L125 PetriNetUnfolderBase]: For 11721/11721 co-relation queries the response was YES. [2023-08-26 22:27:44,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463292 conditions, 226599 events. 152942/226599 cut-off events. For 11721/11721 co-relation queries the response was YES. Maximal size of possible extension queue 6446. Compared 1919587 event pairs, 62556 based on Foata normal form. 0/160791 useless extension candidates. Maximal degree in co-relation 463192. Up to 133393 conditions per place. [2023-08-26 22:27:45,043 INFO L140 encePairwiseOnDemand]: 343/363 looper letters, 104 selfloop transitions, 14 changer transitions 0/127 dead transitions. [2023-08-26 22:27:45,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 127 transitions, 566 flow [2023-08-26 22:27:45,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:27:45,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:27:45,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 599 transitions. [2023-08-26 22:27:45,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5500459136822773 [2023-08-26 22:27:45,045 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 599 transitions. [2023-08-26 22:27:45,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 599 transitions. [2023-08-26 22:27:45,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:45,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 599 transitions. [2023-08-26 22:27:45,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:45,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:45,048 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:45,048 INFO L175 Difference]: Start difference. First operand has 78 places, 72 transitions, 188 flow. Second operand 3 states and 599 transitions. [2023-08-26 22:27:45,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 127 transitions, 566 flow [2023-08-26 22:27:45,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 127 transitions, 563 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:27:45,063 INFO L231 Difference]: Finished difference. Result has 81 places, 85 transitions, 306 flow [2023-08-26 22:27:45,064 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=306, PETRI_PLACES=81, PETRI_TRANSITIONS=85} [2023-08-26 22:27:45,064 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 5 predicate places. [2023-08-26 22:27:45,064 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 85 transitions, 306 flow [2023-08-26 22:27:45,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:45,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:45,064 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:27:45,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 22:27:45,065 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:27:45,065 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:45,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1022874142, now seen corresponding path program 1 times [2023-08-26 22:27:45,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:45,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626534973] [2023-08-26 22:27:45,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:45,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:45,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:45,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:45,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626534973] [2023-08-26 22:27:45,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626534973] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:27:45,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:27:45,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:27:45,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272595978] [2023-08-26 22:27:45,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:27:45,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:27:45,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:45,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:27:45,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:27:45,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 363 [2023-08-26 22:27:45,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 85 transitions, 306 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:45,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:45,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 363 [2023-08-26 22:27:45,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:27:57,216 INFO L124 PetriNetUnfolderBase]: 158971/243521 cut-off events. [2023-08-26 22:27:57,216 INFO L125 PetriNetUnfolderBase]: For 99244/102421 co-relation queries the response was YES. [2023-08-26 22:27:57,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 589908 conditions, 243521 events. 158971/243521 cut-off events. For 99244/102421 co-relation queries the response was YES. Maximal size of possible extension queue 7669. Compared 2221674 event pairs, 55479 based on Foata normal form. 10589/229526 useless extension candidates. Maximal degree in co-relation 327517. Up to 151603 conditions per place. [2023-08-26 22:27:58,300 INFO L140 encePairwiseOnDemand]: 343/363 looper letters, 117 selfloop transitions, 21 changer transitions 0/147 dead transitions. [2023-08-26 22:27:58,300 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 147 transitions, 791 flow [2023-08-26 22:27:58,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:27:58,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:27:58,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 599 transitions. [2023-08-26 22:27:58,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5500459136822773 [2023-08-26 22:27:58,303 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 599 transitions. [2023-08-26 22:27:58,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 599 transitions. [2023-08-26 22:27:58,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:27:58,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 599 transitions. [2023-08-26 22:27:58,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:58,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:58,306 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:58,306 INFO L175 Difference]: Start difference. First operand has 81 places, 85 transitions, 306 flow. Second operand 3 states and 599 transitions. [2023-08-26 22:27:58,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 147 transitions, 791 flow [2023-08-26 22:27:58,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 147 transitions, 749 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:27:58,846 INFO L231 Difference]: Finished difference. Result has 83 places, 105 transitions, 506 flow [2023-08-26 22:27:58,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=506, PETRI_PLACES=83, PETRI_TRANSITIONS=105} [2023-08-26 22:27:58,846 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 7 predicate places. [2023-08-26 22:27:58,846 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 105 transitions, 506 flow [2023-08-26 22:27:58,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:58,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:27:58,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:27:58,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 22:27:58,847 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:27:58,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:27:58,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1902620771, now seen corresponding path program 1 times [2023-08-26 22:27:58,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:27:58,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771604885] [2023-08-26 22:27:58,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:58,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:27:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:58,870 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:58,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:27:58,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771604885] [2023-08-26 22:27:58,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771604885] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:27:58,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312125315] [2023-08-26 22:27:58,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:27:58,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:27:58,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:27:58,874 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:27:58,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 22:27:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:27:58,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:27:58,942 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:27:58,969 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:58,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:27:58,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:27:58,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312125315] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:27:58,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:27:58,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 22:27:58,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098628096] [2023-08-26 22:27:58,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:27:58,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:27:58,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:27:58,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:27:58,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:27:58,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 363 [2023-08-26 22:27:58,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 105 transitions, 506 flow. Second operand has 7 states, 7 states have (on average 167.28571428571428) internal successors, (1171), 7 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:27:58,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:27:58,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 363 [2023-08-26 22:27:58,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:28:02,069 INFO L124 PetriNetUnfolderBase]: 35550/57172 cut-off events. [2023-08-26 22:28:02,070 INFO L125 PetriNetUnfolderBase]: For 70492/70986 co-relation queries the response was YES. [2023-08-26 22:28:02,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166573 conditions, 57172 events. 35550/57172 cut-off events. For 70492/70986 co-relation queries the response was YES. Maximal size of possible extension queue 2473. Compared 490922 event pairs, 562 based on Foata normal form. 4346/57298 useless extension candidates. Maximal degree in co-relation 61945. Up to 26908 conditions per place. [2023-08-26 22:28:02,309 INFO L140 encePairwiseOnDemand]: 358/363 looper letters, 248 selfloop transitions, 6 changer transitions 0/265 dead transitions. [2023-08-26 22:28:02,309 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 265 transitions, 1801 flow [2023-08-26 22:28:02,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:28:02,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:28:02,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1327 transitions. [2023-08-26 22:28:02,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5222353404171586 [2023-08-26 22:28:02,313 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1327 transitions. [2023-08-26 22:28:02,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1327 transitions. [2023-08-26 22:28:02,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:28:02,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1327 transitions. [2023-08-26 22:28:02,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 189.57142857142858) internal successors, (1327), 7 states have internal predecessors, (1327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:28:02,319 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 363.0) internal successors, (2904), 8 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:28:02,320 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 363.0) internal successors, (2904), 8 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:28:02,320 INFO L175 Difference]: Start difference. First operand has 83 places, 105 transitions, 506 flow. Second operand 7 states and 1327 transitions. [2023-08-26 22:28:02,320 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 265 transitions, 1801 flow [2023-08-26 22:28:02,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 265 transitions, 1693 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-26 22:28:02,576 INFO L231 Difference]: Finished difference. Result has 73 places, 84 transitions, 391 flow [2023-08-26 22:28:02,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=391, PETRI_PLACES=73, PETRI_TRANSITIONS=84} [2023-08-26 22:28:02,577 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -3 predicate places. [2023-08-26 22:28:02,577 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 84 transitions, 391 flow [2023-08-26 22:28:02,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 167.28571428571428) internal successors, (1171), 7 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:28:02,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:28:02,577 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:28:02,584 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 22:28:02,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-26 22:28:02,781 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:28:02,781 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:28:02,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1147592031, now seen corresponding path program 1 times [2023-08-26 22:28:02,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:28:02,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098181955] [2023-08-26 22:28:02,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:28:02,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:28:02,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:28:02,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:28:02,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:28:02,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098181955] [2023-08-26 22:28:02,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098181955] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:28:02,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419052] [2023-08-26 22:28:02,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:28:02,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:28:02,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:28:02,820 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-26 22:28:02,822 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 22:28:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:28:02,906 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 22:28:02,907 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:28:02,921 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:28:02,921 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:28:02,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419052] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:28:02,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 22:28:02,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-26 22:28:02,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915294365] [2023-08-26 22:28:02,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:28:02,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:28:02,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:28:02,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:28:02,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:28:02,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 363 [2023-08-26 22:28:02,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 84 transitions, 391 flow. Second operand has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:28:02,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:28:02,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 363 [2023-08-26 22:28:02,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:28:04,891 INFO L124 PetriNetUnfolderBase]: 25827/39977 cut-off events. [2023-08-26 22:28:04,891 INFO L125 PetriNetUnfolderBase]: For 27168/27288 co-relation queries the response was YES. [2023-08-26 22:28:04,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110944 conditions, 39977 events. 25827/39977 cut-off events. For 27168/27288 co-relation queries the response was YES. Maximal size of possible extension queue 1579. Compared 305085 event pairs, 16190 based on Foata normal form. 108/37142 useless extension candidates. Maximal degree in co-relation 19727. Up to 38196 conditions per place. [2023-08-26 22:28:05,059 INFO L140 encePairwiseOnDemand]: 360/363 looper letters, 81 selfloop transitions, 2 changer transitions 0/94 dead transitions. [2023-08-26 22:28:05,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 94 transitions, 581 flow [2023-08-26 22:28:05,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:28:05,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:28:05,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 719 transitions. [2023-08-26 22:28:05,061 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4951790633608815 [2023-08-26 22:28:05,061 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 719 transitions. [2023-08-26 22:28:05,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 719 transitions. [2023-08-26 22:28:05,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:28:05,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 719 transitions. [2023-08-26 22:28:05,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 179.75) internal successors, (719), 4 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:28:05,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 363.0) internal successors, (1815), 5 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:28:05,065 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 363.0) internal successors, (1815), 5 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:28:05,065 INFO L175 Difference]: Start difference. First operand has 73 places, 84 transitions, 391 flow. Second operand 4 states and 719 transitions. [2023-08-26 22:28:05,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 94 transitions, 581 flow [2023-08-26 22:28:05,068 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 94 transitions, 572 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-26 22:28:05,069 INFO L231 Difference]: Finished difference. Result has 71 places, 82 transitions, 374 flow [2023-08-26 22:28:05,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=374, PETRI_PLACES=71, PETRI_TRANSITIONS=82} [2023-08-26 22:28:05,069 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, -5 predicate places. [2023-08-26 22:28:05,069 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 82 transitions, 374 flow [2023-08-26 22:28:05,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:28:05,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:28:05,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:28:05,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 22:28:05,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-26 22:28:05,274 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:28:05,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:28:05,274 INFO L85 PathProgramCache]: Analyzing trace with hash -1973717393, now seen corresponding path program 1 times [2023-08-26 22:28:05,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:28:05,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29503048] [2023-08-26 22:28:05,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:28:05,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:28:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:28:05,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:28:05,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:28:05,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29503048] [2023-08-26 22:28:05,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29503048] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:28:05,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:28:05,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:28:05,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195542023] [2023-08-26 22:28:05,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:28:05,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:28:05,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:28:05,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:28:05,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:28:05,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 363 [2023-08-26 22:28:05,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 82 transitions, 374 flow. Second operand has 5 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) [2023-08-26 22:28:05,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:28:05,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 363 [2023-08-26 22:28:05,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:28:07,930 INFO L124 PetriNetUnfolderBase]: 33077/49571 cut-off events. [2023-08-26 22:28:07,931 INFO L125 PetriNetUnfolderBase]: For 23784/24132 co-relation queries the response was YES. [2023-08-26 22:28:08,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134335 conditions, 49571 events. 33077/49571 cut-off events. For 23784/24132 co-relation queries the response was YES. Maximal size of possible extension queue 2003. Compared 375868 event pairs, 5551 based on Foata normal form. 72/46712 useless extension candidates. Maximal degree in co-relation 134237. Up to 28136 conditions per place. [2023-08-26 22:28:08,155 INFO L140 encePairwiseOnDemand]: 343/363 looper letters, 179 selfloop transitions, 42 changer transitions 0/228 dead transitions. [2023-08-26 22:28:08,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 228 transitions, 1393 flow [2023-08-26 22:28:08,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:28:08,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:28:08,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1258 transitions. [2023-08-26 22:28:08,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4950806768988587 [2023-08-26 22:28:08,158 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1258 transitions. [2023-08-26 22:28:08,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1258 transitions. [2023-08-26 22:28:08,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:28:08,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1258 transitions. [2023-08-26 22:28:08,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 179.71428571428572) internal successors, (1258), 7 states have internal predecessors, (1258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:28:08,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 363.0) internal successors, (2904), 8 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:28:08,163 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 363.0) internal successors, (2904), 8 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:28:08,163 INFO L175 Difference]: Start difference. First operand has 71 places, 82 transitions, 374 flow. Second operand 7 states and 1258 transitions. [2023-08-26 22:28:08,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 228 transitions, 1393 flow [2023-08-26 22:28:08,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 228 transitions, 1386 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:28:08,169 INFO L231 Difference]: Finished difference. Result has 79 places, 113 transitions, 767 flow [2023-08-26 22:28:08,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=767, PETRI_PLACES=79, PETRI_TRANSITIONS=113} [2023-08-26 22:28:08,170 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2023-08-26 22:28:08,170 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 113 transitions, 767 flow [2023-08-26 22:28:08,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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) [2023-08-26 22:28:08,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:28:08,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:28:08,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-26 22:28:08,170 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:28:08,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:28:08,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1973717372, now seen corresponding path program 1 times [2023-08-26 22:28:08,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:28:08,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455031824] [2023-08-26 22:28:08,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:28:08,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:28:08,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:28:08,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:28:08,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:28:08,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455031824] [2023-08-26 22:28:08,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455031824] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:28:08,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:28:08,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:28:08,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511250880] [2023-08-26 22:28:08,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:28:08,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:28:08,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:28:08,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:28:08,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:28:08,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 363 [2023-08-26 22:28:08,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 113 transitions, 767 flow. Second operand has 5 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) [2023-08-26 22:28:08,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:28:08,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 363 [2023-08-26 22:28:08,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:28:11,279 INFO L124 PetriNetUnfolderBase]: 33426/50820 cut-off events. [2023-08-26 22:28:11,280 INFO L125 PetriNetUnfolderBase]: For 95884/96748 co-relation queries the response was YES. [2023-08-26 22:28:11,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 163690 conditions, 50820 events. 33426/50820 cut-off events. For 95884/96748 co-relation queries the response was YES. Maximal size of possible extension queue 2134. Compared 397755 event pairs, 7487 based on Foata normal form. 1605/52362 useless extension candidates. Maximal degree in co-relation 163590. Up to 29514 conditions per place. [2023-08-26 22:28:11,733 INFO L140 encePairwiseOnDemand]: 343/363 looper letters, 219 selfloop transitions, 70 changer transitions 0/296 dead transitions. [2023-08-26 22:28:11,733 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 296 transitions, 2304 flow [2023-08-26 22:28:11,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:28:11,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:28:11,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1287 transitions. [2023-08-26 22:28:11,736 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5064935064935064 [2023-08-26 22:28:11,736 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1287 transitions. [2023-08-26 22:28:11,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1287 transitions. [2023-08-26 22:28:11,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:28:11,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1287 transitions. [2023-08-26 22:28:11,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 183.85714285714286) internal successors, (1287), 7 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:28:11,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 363.0) internal successors, (2904), 8 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:28:11,741 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 363.0) internal successors, (2904), 8 states have internal predecessors, (2904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:28:11,741 INFO L175 Difference]: Start difference. First operand has 79 places, 113 transitions, 767 flow. Second operand 7 states and 1287 transitions. [2023-08-26 22:28:11,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 296 transitions, 2304 flow [2023-08-26 22:28:11,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 296 transitions, 2304 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:28:11,861 INFO L231 Difference]: Finished difference. Result has 90 places, 163 transitions, 1546 flow [2023-08-26 22:28:11,861 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=767, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1546, PETRI_PLACES=90, PETRI_TRANSITIONS=163} [2023-08-26 22:28:11,861 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 14 predicate places. [2023-08-26 22:28:11,861 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 163 transitions, 1546 flow [2023-08-26 22:28:11,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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) [2023-08-26 22:28:11,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:28:11,862 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-26 22:28:11,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-26 22:28:11,862 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-08-26 22:28:11,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:28:11,862 INFO L85 PathProgramCache]: Analyzing trace with hash 803811674, now seen corresponding path program 1 times [2023-08-26 22:28:11,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:28:11,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642624393] [2023-08-26 22:28:11,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:28:11,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:28:11,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:28:11,870 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:28:11,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:28:11,883 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:28:11,883 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:28:11,883 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-08-26 22:28:11,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2023-08-26 22:28:11,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2023-08-26 22:28:11,883 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2023-08-26 22:28:11,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (17 of 22 remaining) [2023-08-26 22:28:11,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-08-26 22:28:11,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-08-26 22:28:11,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-08-26 22:28:11,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-08-26 22:28:11,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-08-26 22:28:11,884 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-08-26 22:28:11,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-08-26 22:28:11,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2023-08-26 22:28:11,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2023-08-26 22:28:11,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-08-26 22:28:11,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-08-26 22:28:11,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-08-26 22:28:11,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-08-26 22:28:11,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-08-26 22:28:11,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-08-26 22:28:11,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-08-26 22:28:11,885 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-08-26 22:28:11,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-26 22:28:11,886 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:28:11,887 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:28:11,887 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-26 22:28:11,910 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 22:28:11,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 242 transitions, 528 flow [2023-08-26 22:28:11,958 INFO L124 PetriNetUnfolderBase]: 86/675 cut-off events. [2023-08-26 22:28:11,958 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 22:28:11,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 675 events. 86/675 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2656 event pairs, 6 based on Foata normal form. 0/530 useless extension candidates. Maximal degree in co-relation 456. Up to 32 conditions per place. [2023-08-26 22:28:11,964 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 242 transitions, 528 flow [2023-08-26 22:28:11,966 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 242 transitions, 528 flow [2023-08-26 22:28:11,967 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:28:11,967 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 242 transitions, 528 flow [2023-08-26 22:28:11,967 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 242 transitions, 528 flow [2023-08-26 22:28:11,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 242 transitions, 528 flow [2023-08-26 22:28:12,009 INFO L124 PetriNetUnfolderBase]: 86/675 cut-off events. [2023-08-26 22:28:12,009 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 22:28:12,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 675 events. 86/675 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2656 event pairs, 6 based on Foata normal form. 0/530 useless extension candidates. Maximal degree in co-relation 456. Up to 32 conditions per place. [2023-08-26 22:28:12,026 INFO L119 LiptonReduction]: Number of co-enabled transitions 33264 [2023-08-26 22:28:14,820 INFO L134 LiptonReduction]: Checked pairs total: 100155 [2023-08-26 22:28:14,820 INFO L136 LiptonReduction]: Total number of compositions: 182 [2023-08-26 22:28:14,821 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:28:14,821 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;@10288a9d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:28:14,822 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-08-26 22:28:14,822 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:28:14,823 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-26 22:28:14,823 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:28:14,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:28:14,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:28:14,823 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-08-26 22:28:14,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:28:14,823 INFO L85 PathProgramCache]: Analyzing trace with hash 52127534, now seen corresponding path program 1 times [2023-08-26 22:28:14,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:28:14,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994699042] [2023-08-26 22:28:14,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:28:14,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:28:14,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:28:14,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:28:14,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:28:14,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994699042] [2023-08-26 22:28:14,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994699042] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:28:14,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:28:14,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:28:14,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526221849] [2023-08-26 22:28:14,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:28:14,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:28:14,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:28:14,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:28:14,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:28:14,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 424 [2023-08-26 22:28:14,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 115 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:28:14,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:28:14,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 424 [2023-08-26 22:28:14,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand