/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/weaver/chl-simpl-str-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 23:54:03,321 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 23:54:03,386 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 23:54:03,389 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 23:54:03,389 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 23:54:03,414 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 23:54:03,414 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 23:54:03,418 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 23:54:03,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 23:54:03,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 23:54:03,418 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 23:54:03,419 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 23:54:03,419 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 23:54:03,419 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 23:54:03,419 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 23:54:03,420 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 23:54:03,420 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 23:54:03,420 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 23:54:03,420 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 23:54:03,420 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 23:54:03,421 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 23:54:03,422 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 23:54:03,423 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 23:54:03,423 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 23:54:03,423 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 23:54:03,423 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 23:54:03,423 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 23:54:03,423 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 23:54:03,424 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 23:54:03,424 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 23:54:03,424 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 23:54:03,425 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 23:54:03,425 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 23:54:03,425 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 23:54:03,425 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 23:54:03,425 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 23:54:03,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 23:54:03,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 23:54:03,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 23:54:03,684 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 23:54:03,686 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 23:54:03,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-simpl-str-subst.wvr.c [2023-08-26 23:54:04,657 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 23:54:04,831 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 23:54:04,832 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-simpl-str-subst.wvr.c [2023-08-26 23:54:04,837 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f906caee/d7b7db602f5446c9acce819f02d089db/FLAG03e3d53a4 [2023-08-26 23:54:04,845 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9f906caee/d7b7db602f5446c9acce819f02d089db [2023-08-26 23:54:04,846 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 23:54:04,847 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 23:54:04,848 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 23:54:04,848 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 23:54:04,850 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 23:54:04,850 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:54:04" (1/1) ... [2023-08-26 23:54:04,851 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11c26d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:54:04, skipping insertion in model container [2023-08-26 23:54:04,851 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 11:54:04" (1/1) ... [2023-08-26 23:54:04,863 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 23:54:05,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 23:54:05,018 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 23:54:05,049 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 23:54:05,059 INFO L206 MainTranslator]: Completed translation [2023-08-26 23:54:05,059 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:54:05 WrapperNode [2023-08-26 23:54:05,059 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 23:54:05,060 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 23:54:05,060 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 23:54:05,060 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 23:54:05,064 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:54:05" (1/1) ... [2023-08-26 23:54:05,077 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:54:05" (1/1) ... [2023-08-26 23:54:05,104 INFO L138 Inliner]: procedures = 23, calls = 32, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 217 [2023-08-26 23:54:05,104 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 23:54:05,105 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 23:54:05,105 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 23:54:05,105 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 23:54:05,111 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:54:05" (1/1) ... [2023-08-26 23:54:05,111 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:54:05" (1/1) ... [2023-08-26 23:54:05,122 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:54:05" (1/1) ... [2023-08-26 23:54:05,122 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:54:05" (1/1) ... [2023-08-26 23:54:05,129 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:54:05" (1/1) ... [2023-08-26 23:54:05,130 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:54:05" (1/1) ... [2023-08-26 23:54:05,132 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:54:05" (1/1) ... [2023-08-26 23:54:05,132 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:54:05" (1/1) ... [2023-08-26 23:54:05,134 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 23:54:05,135 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 23:54:05,135 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 23:54:05,135 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 23:54:05,135 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:54:05" (1/1) ... [2023-08-26 23:54:05,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 23:54:05,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 23:54:05,169 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 23:54:05,189 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 23:54:05,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 23:54:05,198 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-26 23:54:05,198 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-26 23:54:05,198 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-26 23:54:05,198 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-26 23:54:05,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-26 23:54:05,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-26 23:54:05,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 23:54:05,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 23:54:05,199 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 23:54:05,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 23:54:05,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 23:54:05,199 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 23:54:05,199 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 23:54:05,200 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 23:54:05,277 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 23:54:05,279 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 23:54:05,603 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 23:54:05,611 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 23:54:05,611 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 23:54:05,612 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:54:05 BoogieIcfgContainer [2023-08-26 23:54:05,612 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 23:54:05,614 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 23:54:05,614 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 23:54:05,618 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 23:54:05,618 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 11:54:04" (1/3) ... [2023-08-26 23:54:05,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48cbdcca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:54:05, skipping insertion in model container [2023-08-26 23:54:05,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 11:54:05" (2/3) ... [2023-08-26 23:54:05,619 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48cbdcca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 11:54:05, skipping insertion in model container [2023-08-26 23:54:05,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 11:54:05" (3/3) ... [2023-08-26 23:54:05,620 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2023-08-26 23:54:05,631 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 23:54:05,631 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-08-26 23:54:05,631 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 23:54:05,696 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 23:54:05,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 268 transitions, 560 flow [2023-08-26 23:54:05,783 INFO L124 PetriNetUnfolderBase]: 20/265 cut-off events. [2023-08-26 23:54:05,783 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 23:54:05,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 265 events. 20/265 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 679 event pairs, 0 based on Foata normal form. 0/226 useless extension candidates. Maximal degree in co-relation 187. Up to 2 conditions per place. [2023-08-26 23:54:05,789 INFO L82 GeneralOperation]: Start removeDead. Operand has 258 places, 268 transitions, 560 flow [2023-08-26 23:54:05,793 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 254 transitions, 526 flow [2023-08-26 23:54:05,795 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 23:54:05,800 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 254 transitions, 526 flow [2023-08-26 23:54:05,802 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 254 transitions, 526 flow [2023-08-26 23:54:05,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 254 transitions, 526 flow [2023-08-26 23:54:05,854 INFO L124 PetriNetUnfolderBase]: 20/254 cut-off events. [2023-08-26 23:54:05,855 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-26 23:54:05,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 254 events. 20/254 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 679 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 187. Up to 2 conditions per place. [2023-08-26 23:54:05,866 INFO L119 LiptonReduction]: Number of co-enabled transitions 22848 [2023-08-26 23:54:17,078 INFO L134 LiptonReduction]: Checked pairs total: 22055 [2023-08-26 23:54:17,078 INFO L136 LiptonReduction]: Total number of compositions: 327 [2023-08-26 23:54:17,093 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 23:54:17,099 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;@5e374b2c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 23:54:17,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-08-26 23:54:17,104 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 23:54:17,104 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-26 23:54:17,104 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 23:54:17,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:54:17,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 23:54:17,105 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-26 23:54:17,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:54:17,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1122922, now seen corresponding path program 1 times [2023-08-26 23:54:17,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:54:17,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925300518] [2023-08-26 23:54:17,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:54:17,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:54:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:54:17,237 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 23:54:17,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:54:17,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925300518] [2023-08-26 23:54:17,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925300518] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:54:17,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:54:17,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:54:17,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009168661] [2023-08-26 23:54:17,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:54:17,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-26 23:54:17,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:54:17,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-26 23:54:17,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-26 23:54:17,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 595 [2023-08-26 23:54:17,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 86 flow. Second operand has 2 states, 2 states have (on average 254.5) internal successors, (509), 2 states have internal predecessors, (509), 0 states have call successors, (0), 0 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 23:54:17,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:54:17,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 595 [2023-08-26 23:54:17,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:54:17,512 INFO L124 PetriNetUnfolderBase]: 1125/1728 cut-off events. [2023-08-26 23:54:17,512 INFO L125 PetriNetUnfolderBase]: For 103/103 co-relation queries the response was YES. [2023-08-26 23:54:17,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3590 conditions, 1728 events. 1125/1728 cut-off events. For 103/103 co-relation queries the response was YES. Maximal size of possible extension queue 216. Compared 8165 event pairs, 1125 based on Foata normal form. 0/656 useless extension candidates. Maximal degree in co-relation 3104. Up to 1729 conditions per place. [2023-08-26 23:54:17,519 INFO L140 encePairwiseOnDemand]: 589/595 looper letters, 28 selfloop transitions, 0 changer transitions 0/28 dead transitions. [2023-08-26 23:54:17,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 28 transitions, 130 flow [2023-08-26 23:54:17,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-26 23:54:17,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-26 23:54:17,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 540 transitions. [2023-08-26 23:54:17,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453781512605042 [2023-08-26 23:54:17,533 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 540 transitions. [2023-08-26 23:54:17,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 540 transitions. [2023-08-26 23:54:17,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:54:17,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 540 transitions. [2023-08-26 23:54:17,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 270.0) internal successors, (540), 2 states have internal predecessors, (540), 0 states have call successors, (0), 0 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 23:54:17,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 595.0) internal successors, (1785), 3 states have internal predecessors, (1785), 0 states have call successors, (0), 0 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 23:54:17,546 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 595.0) internal successors, (1785), 3 states have internal predecessors, (1785), 0 states have call successors, (0), 0 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 23:54:17,547 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 86 flow. Second operand 2 states and 540 transitions. [2023-08-26 23:54:17,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 28 transitions, 130 flow [2023-08-26 23:54:17,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 28 transitions, 118 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-26 23:54:17,552 INFO L231 Difference]: Finished difference. Result has 33 places, 28 transitions, 62 flow [2023-08-26 23:54:17,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=62, PETRI_PLACES=33, PETRI_TRANSITIONS=28} [2023-08-26 23:54:17,557 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -11 predicate places. [2023-08-26 23:54:17,558 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 28 transitions, 62 flow [2023-08-26 23:54:17,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 254.5) internal successors, (509), 2 states have internal predecessors, (509), 0 states have call successors, (0), 0 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 23:54:17,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:54:17,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 23:54:17,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 23:54:17,558 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-26 23:54:17,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:54:17,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1122972, now seen corresponding path program 1 times [2023-08-26 23:54:17,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:54:17,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702203191] [2023-08-26 23:54:17,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:54:17,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:54:17,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:54:17,708 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 23:54:17,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:54:17,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702203191] [2023-08-26 23:54:17,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702203191] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:54:17,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:54:17,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:54:17,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484047208] [2023-08-26 23:54:17,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:54:17,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:54:17,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:54:17,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:54:17,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:54:17,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 595 [2023-08-26 23:54:17,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 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 23:54:17,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:54:17,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 595 [2023-08-26 23:54:17,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:54:17,850 INFO L124 PetriNetUnfolderBase]: 777/1212 cut-off events. [2023-08-26 23:54:17,850 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-26 23:54:17,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2458 conditions, 1212 events. 777/1212 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 5369 event pairs, 777 based on Foata normal form. 0/502 useless extension candidates. Maximal degree in co-relation 2455. Up to 1212 conditions per place. [2023-08-26 23:54:17,854 INFO L140 encePairwiseOnDemand]: 592/595 looper letters, 25 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-08-26 23:54:17,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 26 transitions, 110 flow [2023-08-26 23:54:17,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:54:17,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:54:17,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 775 transitions. [2023-08-26 23:54:17,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4341736694677871 [2023-08-26 23:54:17,856 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 775 transitions. [2023-08-26 23:54:17,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 775 transitions. [2023-08-26 23:54:17,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:54:17,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 775 transitions. [2023-08-26 23:54:17,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 258.3333333333333) internal successors, (775), 3 states have internal predecessors, (775), 0 states have call successors, (0), 0 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 23:54:17,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 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 23:54:17,861 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 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 23:54:17,861 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 62 flow. Second operand 3 states and 775 transitions. [2023-08-26 23:54:17,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 26 transitions, 110 flow [2023-08-26 23:54:17,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 23:54:17,862 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 60 flow [2023-08-26 23:54:17,862 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2023-08-26 23:54:17,863 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -11 predicate places. [2023-08-26 23:54:17,863 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 60 flow [2023-08-26 23:54:17,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 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 23:54:17,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:54:17,864 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 23:54:17,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 23:54:17,864 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-26 23:54:17,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:54:17,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1122974, now seen corresponding path program 1 times [2023-08-26 23:54:17,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:54:17,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942810997] [2023-08-26 23:54:17,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:54:17,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:54:17,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:54:17,931 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 23:54:17,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:54:17,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942810997] [2023-08-26 23:54:17,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942810997] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:54:17,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:54:17,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:54:17,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843085444] [2023-08-26 23:54:17,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:54:17,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:54:17,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:54:17,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:54:17,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:54:17,933 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 595 [2023-08-26 23:54:17,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 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 23:54:17,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:54:17,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 595 [2023-08-26 23:54:17,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:54:18,036 INFO L124 PetriNetUnfolderBase]: 527/838 cut-off events. [2023-08-26 23:54:18,036 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2023-08-26 23:54:18,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 838 events. 527/838 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 3470 event pairs, 527 based on Foata normal form. 0/384 useless extension candidates. Maximal degree in co-relation 1702. Up to 838 conditions per place. [2023-08-26 23:54:18,039 INFO L140 encePairwiseOnDemand]: 592/595 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-08-26 23:54:18,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 24 transitions, 104 flow [2023-08-26 23:54:18,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:54:18,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:54:18,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 773 transitions. [2023-08-26 23:54:18,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4330532212885154 [2023-08-26 23:54:18,041 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 773 transitions. [2023-08-26 23:54:18,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 773 transitions. [2023-08-26 23:54:18,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:54:18,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 773 transitions. [2023-08-26 23:54:18,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 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 23:54:18,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 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 23:54:18,045 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 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 23:54:18,046 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 60 flow. Second operand 3 states and 773 transitions. [2023-08-26 23:54:18,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 24 transitions, 104 flow [2023-08-26 23:54:18,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 24 transitions, 103 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:54:18,046 INFO L231 Difference]: Finished difference. Result has 32 places, 24 transitions, 57 flow [2023-08-26 23:54:18,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=32, PETRI_TRANSITIONS=24} [2023-08-26 23:54:18,047 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -12 predicate places. [2023-08-26 23:54:18,047 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 24 transitions, 57 flow [2023-08-26 23:54:18,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 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 23:54:18,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:54:18,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 23:54:18,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 23:54:18,048 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-26 23:54:18,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:54:18,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1122923, now seen corresponding path program 1 times [2023-08-26 23:54:18,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:54:18,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464466660] [2023-08-26 23:54:18,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:54:18,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:54:18,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:54:18,076 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 23:54:18,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:54:18,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464466660] [2023-08-26 23:54:18,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464466660] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:54:18,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:54:18,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:54:18,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904809838] [2023-08-26 23:54:18,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:54:18,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:54:18,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:54:18,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:54:18,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:54:18,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 595 [2023-08-26 23:54:18,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 24 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 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 23:54:18,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:54:18,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 595 [2023-08-26 23:54:18,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:54:18,158 INFO L124 PetriNetUnfolderBase]: 323/530 cut-off events. [2023-08-26 23:54:18,158 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-26 23:54:18,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1085 conditions, 530 events. 323/530 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 1995 event pairs, 323 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 1081. Up to 530 conditions per place. [2023-08-26 23:54:18,160 INFO L140 encePairwiseOnDemand]: 592/595 looper letters, 21 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-08-26 23:54:18,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 22 transitions, 97 flow [2023-08-26 23:54:18,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:54:18,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:54:18,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 771 transitions. [2023-08-26 23:54:18,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4319327731092437 [2023-08-26 23:54:18,162 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 771 transitions. [2023-08-26 23:54:18,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 771 transitions. [2023-08-26 23:54:18,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:54:18,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 771 transitions. [2023-08-26 23:54:18,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.0) internal successors, (771), 3 states have internal predecessors, (771), 0 states have call successors, (0), 0 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 23:54:18,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 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 23:54:18,167 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 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 23:54:18,167 INFO L175 Difference]: Start difference. First operand has 32 places, 24 transitions, 57 flow. Second operand 3 states and 771 transitions. [2023-08-26 23:54:18,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 22 transitions, 97 flow [2023-08-26 23:54:18,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 22 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:54:18,169 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 54 flow [2023-08-26 23:54:18,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2023-08-26 23:54:18,170 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -13 predicate places. [2023-08-26 23:54:18,170 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 54 flow [2023-08-26 23:54:18,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 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 23:54:18,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:54:18,170 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-26 23:54:18,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 23:54:18,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-26 23:54:18,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:54:18,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1122973, now seen corresponding path program 1 times [2023-08-26 23:54:18,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:54:18,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301355589] [2023-08-26 23:54:18,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:54:18,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:54:18,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:54:18,209 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 23:54:18,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:54:18,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301355589] [2023-08-26 23:54:18,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301355589] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:54:18,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:54:18,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:54:18,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303352289] [2023-08-26 23:54:18,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:54:18,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:54:18,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:54:18,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:54:18,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:54:18,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 595 [2023-08-26 23:54:18,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 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 23:54:18,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:54:18,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 595 [2023-08-26 23:54:18,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:54:18,275 INFO L124 PetriNetUnfolderBase]: 173/300 cut-off events. [2023-08-26 23:54:18,277 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-26 23:54:18,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 300 events. 173/300 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1002 event pairs, 173 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 614. Up to 300 conditions per place. [2023-08-26 23:54:18,278 INFO L140 encePairwiseOnDemand]: 592/595 looper letters, 19 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2023-08-26 23:54:18,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 20 transitions, 90 flow [2023-08-26 23:54:18,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:54:18,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:54:18,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 769 transitions. [2023-08-26 23:54:18,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.430812324929972 [2023-08-26 23:54:18,284 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 769 transitions. [2023-08-26 23:54:18,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 769 transitions. [2023-08-26 23:54:18,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:54:18,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 769 transitions. [2023-08-26 23:54:18,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 256.3333333333333) internal successors, (769), 3 states have internal predecessors, (769), 0 states have call successors, (0), 0 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 23:54:18,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 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 23:54:18,289 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 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 23:54:18,289 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 54 flow. Second operand 3 states and 769 transitions. [2023-08-26 23:54:18,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 20 transitions, 90 flow [2023-08-26 23:54:18,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 20 transitions, 89 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:54:18,290 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 51 flow [2023-08-26 23:54:18,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=51, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2023-08-26 23:54:18,292 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -14 predicate places. [2023-08-26 23:54:18,293 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 51 flow [2023-08-26 23:54:18,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.0) internal successors, (750), 3 states have internal predecessors, (750), 0 states have call successors, (0), 0 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 23:54:18,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:54:18,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 23:54:18,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 23:54:18,293 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-26 23:54:18,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:54:18,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1079109400, now seen corresponding path program 1 times [2023-08-26 23:54:18,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:54:18,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338511836] [2023-08-26 23:54:18,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:54:18,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:54:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:54:18,324 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 23:54:18,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:54:18,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338511836] [2023-08-26 23:54:18,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338511836] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:54:18,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:54:18,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:54:18,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133760751] [2023-08-26 23:54:18,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:54:18,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:54:18,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:54:18,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:54:18,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:54:18,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 595 [2023-08-26 23:54:18,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 51 flow. Second operand has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 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 23:54:18,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:54:18,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 595 [2023-08-26 23:54:18,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:54:18,369 INFO L124 PetriNetUnfolderBase]: 93/172 cut-off events. [2023-08-26 23:54:18,370 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 23:54:18,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 361 conditions, 172 events. 93/172 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 468 event pairs, 93 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 357. Up to 172 conditions per place. [2023-08-26 23:54:18,370 INFO L140 encePairwiseOnDemand]: 592/595 looper letters, 17 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2023-08-26 23:54:18,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 18 transitions, 83 flow [2023-08-26 23:54:18,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:54:18,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:54:18,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 767 transitions. [2023-08-26 23:54:18,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4296918767507003 [2023-08-26 23:54:18,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 767 transitions. [2023-08-26 23:54:18,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 767 transitions. [2023-08-26 23:54:18,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:54:18,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 767 transitions. [2023-08-26 23:54:18,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.66666666666666) internal successors, (767), 3 states have internal predecessors, (767), 0 states have call successors, (0), 0 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 23:54:18,376 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 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 23:54:18,377 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 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 23:54:18,378 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 51 flow. Second operand 3 states and 767 transitions. [2023-08-26 23:54:18,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 18 transitions, 83 flow [2023-08-26 23:54:18,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 18 transitions, 82 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:54:18,380 INFO L231 Difference]: Finished difference. Result has 29 places, 18 transitions, 48 flow [2023-08-26 23:54:18,380 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=48, PETRI_PLACES=29, PETRI_TRANSITIONS=18} [2023-08-26 23:54:18,381 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -15 predicate places. [2023-08-26 23:54:18,383 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 18 transitions, 48 flow [2023-08-26 23:54:18,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 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 23:54:18,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:54:18,385 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 23:54:18,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 23:54:18,385 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-26 23:54:18,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:54:18,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1079109350, now seen corresponding path program 1 times [2023-08-26 23:54:18,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:54:18,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968580338] [2023-08-26 23:54:18,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:54:18,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:54:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:54:18,407 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 23:54:18,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:54:18,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968580338] [2023-08-26 23:54:18,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968580338] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:54:18,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:54:18,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 23:54:18,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659037120] [2023-08-26 23:54:18,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:54:18,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 23:54:18,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:54:18,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 23:54:18,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 23:54:18,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 249 out of 595 [2023-08-26 23:54:18,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 18 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 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 23:54:18,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:54:18,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 249 of 595 [2023-08-26 23:54:18,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:54:18,438 INFO L124 PetriNetUnfolderBase]: 37/80 cut-off events. [2023-08-26 23:54:18,439 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-26 23:54:18,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 80 events. 37/80 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 150 event pairs, 37 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 172. Up to 80 conditions per place. [2023-08-26 23:54:18,439 INFO L140 encePairwiseOnDemand]: 592/595 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-08-26 23:54:18,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 16 transitions, 76 flow [2023-08-26 23:54:18,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 23:54:18,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 23:54:18,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 765 transitions. [2023-08-26 23:54:18,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2023-08-26 23:54:18,441 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 765 transitions. [2023-08-26 23:54:18,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 765 transitions. [2023-08-26 23:54:18,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:54:18,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 765 transitions. [2023-08-26 23:54:18,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 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 23:54:18,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 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 23:54:18,444 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 595.0) internal successors, (2380), 4 states have internal predecessors, (2380), 0 states have call successors, (0), 0 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 23:54:18,444 INFO L175 Difference]: Start difference. First operand has 29 places, 18 transitions, 48 flow. Second operand 3 states and 765 transitions. [2023-08-26 23:54:18,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 16 transitions, 76 flow [2023-08-26 23:54:18,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 16 transitions, 75 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:54:18,445 INFO L231 Difference]: Finished difference. Result has 28 places, 16 transitions, 45 flow [2023-08-26 23:54:18,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=45, PETRI_PLACES=28, PETRI_TRANSITIONS=16} [2023-08-26 23:54:18,445 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -16 predicate places. [2023-08-26 23:54:18,445 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 16 transitions, 45 flow [2023-08-26 23:54:18,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 0 states have call successors, (0), 0 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 23:54:18,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:54:18,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:54:18,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 23:54:18,446 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-26 23:54:18,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:54:18,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1035359611, now seen corresponding path program 1 times [2023-08-26 23:54:18,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:54:18,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181542334] [2023-08-26 23:54:18,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:54:18,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:54:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:54:19,905 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 23:54:19,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:54:19,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181542334] [2023-08-26 23:54:19,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181542334] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:54:19,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:54:19,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 23:54:19,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394948926] [2023-08-26 23:54:19,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:54:19,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:54:19,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:54:19,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:54:19,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:54:19,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 595 [2023-08-26 23:54:19,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 16 transitions, 45 flow. Second operand has 5 states, 5 states have (on average 218.2) internal successors, (1091), 5 states have internal predecessors, (1091), 0 states have call successors, (0), 0 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 23:54:19,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:54:19,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 595 [2023-08-26 23:54:19,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:54:20,143 INFO L124 PetriNetUnfolderBase]: 40/106 cut-off events. [2023-08-26 23:54:20,144 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 23:54:20,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 106 events. 40/106 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 324 event pairs, 6 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 226. Up to 48 conditions per place. [2023-08-26 23:54:20,144 INFO L140 encePairwiseOnDemand]: 590/595 looper letters, 30 selfloop transitions, 6 changer transitions 9/45 dead transitions. [2023-08-26 23:54:20,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 45 transitions, 203 flow [2023-08-26 23:54:20,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 23:54:20,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 23:54:20,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1336 transitions. [2023-08-26 23:54:20,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3742296918767507 [2023-08-26 23:54:20,147 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1336 transitions. [2023-08-26 23:54:20,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1336 transitions. [2023-08-26 23:54:20,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:54:20,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1336 transitions. [2023-08-26 23:54:20,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 222.66666666666666) internal successors, (1336), 6 states have internal predecessors, (1336), 0 states have call successors, (0), 0 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 23:54:20,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 0 states have call successors, (0), 0 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 23:54:20,154 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 0 states have call successors, (0), 0 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 23:54:20,154 INFO L175 Difference]: Start difference. First operand has 28 places, 16 transitions, 45 flow. Second operand 6 states and 1336 transitions. [2023-08-26 23:54:20,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 45 transitions, 203 flow [2023-08-26 23:54:20,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 45 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 23:54:20,155 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 77 flow [2023-08-26 23:54:20,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=44, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=77, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2023-08-26 23:54:20,156 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -9 predicate places. [2023-08-26 23:54:20,156 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 77 flow [2023-08-26 23:54:20,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 218.2) internal successors, (1091), 5 states have internal predecessors, (1091), 0 states have call successors, (0), 0 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 23:54:20,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:54:20,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:54:20,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 23:54:20,157 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-26 23:54:20,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:54:20,158 INFO L85 PathProgramCache]: Analyzing trace with hash -351013779, now seen corresponding path program 2 times [2023-08-26 23:54:20,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:54:20,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416503156] [2023-08-26 23:54:20,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:54:20,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:54:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:54:21,393 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 23:54:21,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:54:21,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416503156] [2023-08-26 23:54:21,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416503156] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:54:21,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:54:21,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 23:54:21,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440029387] [2023-08-26 23:54:21,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:54:21,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:54:21,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:54:21,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:54:21,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:54:21,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 595 [2023-08-26 23:54:21,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 218.2) internal successors, (1091), 5 states have internal predecessors, (1091), 0 states have call successors, (0), 0 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 23:54:21,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:54:21,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 595 [2023-08-26 23:54:21,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:54:21,606 INFO L124 PetriNetUnfolderBase]: 36/114 cut-off events. [2023-08-26 23:54:21,606 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-08-26 23:54:21,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325 conditions, 114 events. 36/114 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 402 event pairs, 4 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 318. Up to 62 conditions per place. [2023-08-26 23:54:21,606 INFO L140 encePairwiseOnDemand]: 590/595 looper letters, 28 selfloop transitions, 5 changer transitions 10/43 dead transitions. [2023-08-26 23:54:21,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 43 transitions, 227 flow [2023-08-26 23:54:21,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 23:54:21,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 23:54:21,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1334 transitions. [2023-08-26 23:54:21,609 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37366946778711485 [2023-08-26 23:54:21,609 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1334 transitions. [2023-08-26 23:54:21,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1334 transitions. [2023-08-26 23:54:21,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:54:21,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1334 transitions. [2023-08-26 23:54:21,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 222.33333333333334) internal successors, (1334), 6 states have internal predecessors, (1334), 0 states have call successors, (0), 0 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 23:54:21,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 0 states have call successors, (0), 0 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 23:54:21,615 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 0 states have call successors, (0), 0 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 23:54:21,615 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 77 flow. Second operand 6 states and 1334 transitions. [2023-08-26 23:54:21,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 43 transitions, 227 flow [2023-08-26 23:54:21,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 223 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-26 23:54:21,616 INFO L231 Difference]: Finished difference. Result has 41 places, 20 transitions, 95 flow [2023-08-26 23:54:21,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=95, PETRI_PLACES=41, PETRI_TRANSITIONS=20} [2023-08-26 23:54:21,617 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2023-08-26 23:54:21,617 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 20 transitions, 95 flow [2023-08-26 23:54:21,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 218.2) internal successors, (1091), 5 states have internal predecessors, (1091), 0 states have call successors, (0), 0 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 23:54:21,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:54:21,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:54:21,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 23:54:21,618 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-26 23:54:21,618 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:54:21,618 INFO L85 PathProgramCache]: Analyzing trace with hash -1647568815, now seen corresponding path program 3 times [2023-08-26 23:54:21,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:54:21,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707439190] [2023-08-26 23:54:21,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:54:21,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:54:21,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:54:22,609 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 23:54:22,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:54:22,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707439190] [2023-08-26 23:54:22,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707439190] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:54:22,611 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:54:22,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 23:54:22,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361844969] [2023-08-26 23:54:22,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:54:22,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:54:22,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:54:22,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:54:22,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:54:22,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 595 [2023-08-26 23:54:22,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 20 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 218.2) internal successors, (1091), 5 states have internal predecessors, (1091), 0 states have call successors, (0), 0 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 23:54:22,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:54:22,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 595 [2023-08-26 23:54:22,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:54:22,883 INFO L124 PetriNetUnfolderBase]: 20/70 cut-off events. [2023-08-26 23:54:22,883 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2023-08-26 23:54:22,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 70 events. 20/70 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 192 event pairs, 0 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 229. Up to 23 conditions per place. [2023-08-26 23:54:22,884 INFO L140 encePairwiseOnDemand]: 590/595 looper letters, 27 selfloop transitions, 6 changer transitions 9/42 dead transitions. [2023-08-26 23:54:22,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 42 transitions, 239 flow [2023-08-26 23:54:22,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 23:54:22,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 23:54:22,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1332 transitions. [2023-08-26 23:54:22,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.373109243697479 [2023-08-26 23:54:22,888 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1332 transitions. [2023-08-26 23:54:22,888 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1332 transitions. [2023-08-26 23:54:22,888 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:54:22,888 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1332 transitions. [2023-08-26 23:54:22,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 222.0) internal successors, (1332), 6 states have internal predecessors, (1332), 0 states have call successors, (0), 0 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 23:54:22,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 0 states have call successors, (0), 0 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 23:54:22,893 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 0 states have call successors, (0), 0 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 23:54:22,893 INFO L175 Difference]: Start difference. First operand has 41 places, 20 transitions, 95 flow. Second operand 6 states and 1332 transitions. [2023-08-26 23:54:22,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 42 transitions, 239 flow [2023-08-26 23:54:22,895 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 42 transitions, 217 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-26 23:54:22,896 INFO L231 Difference]: Finished difference. Result has 42 places, 20 transitions, 97 flow [2023-08-26 23:54:22,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=97, PETRI_PLACES=42, PETRI_TRANSITIONS=20} [2023-08-26 23:54:22,897 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -2 predicate places. [2023-08-26 23:54:22,897 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 20 transitions, 97 flow [2023-08-26 23:54:22,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 218.2) internal successors, (1091), 5 states have internal predecessors, (1091), 0 states have call successors, (0), 0 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 23:54:22,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:54:22,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:54:22,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 23:54:22,898 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-26 23:54:22,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:54:22,898 INFO L85 PathProgramCache]: Analyzing trace with hash 2040322991, now seen corresponding path program 4 times [2023-08-26 23:54:22,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:54:22,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835277797] [2023-08-26 23:54:22,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:54:22,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:54:22,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:54:23,934 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 23:54:23,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:54:23,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835277797] [2023-08-26 23:54:23,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835277797] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:54:23,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:54:23,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 23:54:23,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212835857] [2023-08-26 23:54:23,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:54:23,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:54:23,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:54:23,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:54:23,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:54:23,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 595 [2023-08-26 23:54:23,937 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 20 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 218.2) internal successors, (1091), 5 states have internal predecessors, (1091), 0 states have call successors, (0), 0 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 23:54:23,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:54:23,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 595 [2023-08-26 23:54:23,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:54:24,178 INFO L124 PetriNetUnfolderBase]: 15/67 cut-off events. [2023-08-26 23:54:24,179 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-08-26 23:54:24,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 67 events. 15/67 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 178 event pairs, 0 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 221. Up to 41 conditions per place. [2023-08-26 23:54:24,179 INFO L140 encePairwiseOnDemand]: 590/595 looper letters, 18 selfloop transitions, 4 changer transitions 12/34 dead transitions. [2023-08-26 23:54:24,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 34 transitions, 205 flow [2023-08-26 23:54:24,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 23:54:24,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 23:54:24,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1324 transitions. [2023-08-26 23:54:24,182 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3708683473389356 [2023-08-26 23:54:24,182 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1324 transitions. [2023-08-26 23:54:24,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1324 transitions. [2023-08-26 23:54:24,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:54:24,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1324 transitions. [2023-08-26 23:54:24,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 220.66666666666666) internal successors, (1324), 6 states have internal predecessors, (1324), 0 states have call successors, (0), 0 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 23:54:24,202 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 0 states have call successors, (0), 0 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 23:54:24,202 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 0 states have call successors, (0), 0 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 23:54:24,202 INFO L175 Difference]: Start difference. First operand has 42 places, 20 transitions, 97 flow. Second operand 6 states and 1324 transitions. [2023-08-26 23:54:24,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 34 transitions, 205 flow [2023-08-26 23:54:24,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 34 transitions, 200 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 23:54:24,203 INFO L231 Difference]: Finished difference. Result has 45 places, 18 transitions, 91 flow [2023-08-26 23:54:24,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=91, PETRI_PLACES=45, PETRI_TRANSITIONS=18} [2023-08-26 23:54:24,204 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2023-08-26 23:54:24,204 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 18 transitions, 91 flow [2023-08-26 23:54:24,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 218.2) internal successors, (1091), 5 states have internal predecessors, (1091), 0 states have call successors, (0), 0 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 23:54:24,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:54:24,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:54:24,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 23:54:24,205 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-26 23:54:24,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:54:24,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1509941807, now seen corresponding path program 5 times [2023-08-26 23:54:24,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:54:24,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022629701] [2023-08-26 23:54:24,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:54:24,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:54:24,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:54:25,087 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 23:54:25,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:54:25,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022629701] [2023-08-26 23:54:25,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022629701] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:54:25,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:54:25,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 23:54:25,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999921222] [2023-08-26 23:54:25,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:54:25,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:54:25,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:54:25,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:54:25,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:54:25,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 595 [2023-08-26 23:54:25,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 18 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 218.2) internal successors, (1091), 5 states have internal predecessors, (1091), 0 states have call successors, (0), 0 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 23:54:25,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:54:25,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 595 [2023-08-26 23:54:25,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:54:25,330 INFO L124 PetriNetUnfolderBase]: 7/37 cut-off events. [2023-08-26 23:54:25,330 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-26 23:54:25,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 37 events. 7/37 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 128. Up to 14 conditions per place. [2023-08-26 23:54:25,330 INFO L140 encePairwiseOnDemand]: 590/595 looper letters, 17 selfloop transitions, 3 changer transitions 8/28 dead transitions. [2023-08-26 23:54:25,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 28 transitions, 171 flow [2023-08-26 23:54:25,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 23:54:25,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 23:54:25,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1318 transitions. [2023-08-26 23:54:25,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36918767507002803 [2023-08-26 23:54:25,333 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1318 transitions. [2023-08-26 23:54:25,334 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1318 transitions. [2023-08-26 23:54:25,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:54:25,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1318 transitions. [2023-08-26 23:54:25,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 219.66666666666666) internal successors, (1318), 6 states have internal predecessors, (1318), 0 states have call successors, (0), 0 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 23:54:25,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 0 states have call successors, (0), 0 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 23:54:25,340 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 0 states have call successors, (0), 0 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 23:54:25,340 INFO L175 Difference]: Start difference. First operand has 45 places, 18 transitions, 91 flow. Second operand 6 states and 1318 transitions. [2023-08-26 23:54:25,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 28 transitions, 171 flow [2023-08-26 23:54:25,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 28 transitions, 152 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-26 23:54:25,342 INFO L231 Difference]: Finished difference. Result has 41 places, 16 transitions, 65 flow [2023-08-26 23:54:25,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=65, PETRI_PLACES=41, PETRI_TRANSITIONS=16} [2023-08-26 23:54:25,343 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2023-08-26 23:54:25,343 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 16 transitions, 65 flow [2023-08-26 23:54:25,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 218.2) internal successors, (1091), 5 states have internal predecessors, (1091), 0 states have call successors, (0), 0 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 23:54:25,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 23:54:25,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:54:25,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 23:54:25,344 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 37 more)] === [2023-08-26 23:54:25,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 23:54:25,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1138391217, now seen corresponding path program 6 times [2023-08-26 23:54:25,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 23:54:25,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340529553] [2023-08-26 23:54:25,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 23:54:25,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 23:54:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 23:54:26,234 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 23:54:26,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 23:54:26,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340529553] [2023-08-26 23:54:26,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340529553] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 23:54:26,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 23:54:26,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 23:54:26,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961533430] [2023-08-26 23:54:26,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 23:54:26,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 23:54:26,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 23:54:26,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 23:54:26,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 23:54:26,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 215 out of 595 [2023-08-26 23:54:26,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 16 transitions, 65 flow. Second operand has 5 states, 5 states have (on average 218.2) internal successors, (1091), 5 states have internal predecessors, (1091), 0 states have call successors, (0), 0 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 23:54:26,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 23:54:26,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 215 of 595 [2023-08-26 23:54:26,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 23:54:26,521 INFO L124 PetriNetUnfolderBase]: 5/25 cut-off events. [2023-08-26 23:54:26,521 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-26 23:54:26,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 94 conditions, 25 events. 5/25 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 86. Up to 10 conditions per place. [2023-08-26 23:54:26,521 INFO L140 encePairwiseOnDemand]: 590/595 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-08-26 23:54:26,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 20 transitions, 112 flow [2023-08-26 23:54:26,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 23:54:26,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 23:54:26,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1311 transitions. [2023-08-26 23:54:26,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36722689075630255 [2023-08-26 23:54:26,524 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1311 transitions. [2023-08-26 23:54:26,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1311 transitions. [2023-08-26 23:54:26,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 23:54:26,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1311 transitions. [2023-08-26 23:54:26,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 218.5) internal successors, (1311), 6 states have internal predecessors, (1311), 0 states have call successors, (0), 0 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 23:54:26,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 0 states have call successors, (0), 0 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 23:54:26,530 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 595.0) internal successors, (4165), 7 states have internal predecessors, (4165), 0 states have call successors, (0), 0 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 23:54:26,530 INFO L175 Difference]: Start difference. First operand has 41 places, 16 transitions, 65 flow. Second operand 6 states and 1311 transitions. [2023-08-26 23:54:26,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 20 transitions, 112 flow [2023-08-26 23:54:26,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 20 transitions, 99 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-26 23:54:26,530 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-08-26 23:54:26,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=595, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-08-26 23:54:26,531 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -7 predicate places. [2023-08-26 23:54:26,531 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-08-26 23:54:26,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 218.2) internal successors, (1091), 5 states have internal predecessors, (1091), 0 states have call successors, (0), 0 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 23:54:26,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 40 remaining) [2023-08-26 23:54:26,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 40 remaining) [2023-08-26 23:54:26,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 40 remaining) [2023-08-26 23:54:26,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 40 remaining) [2023-08-26 23:54:26,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 40 remaining) [2023-08-26 23:54:26,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 40 remaining) [2023-08-26 23:54:26,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 40 remaining) [2023-08-26 23:54:26,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 40 remaining) [2023-08-26 23:54:26,533 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 40 remaining) [2023-08-26 23:54:26,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 40 remaining) [2023-08-26 23:54:26,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 40 remaining) [2023-08-26 23:54:26,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 40 remaining) [2023-08-26 23:54:26,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 40 remaining) [2023-08-26 23:54:26,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 40 remaining) [2023-08-26 23:54:26,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 40 remaining) [2023-08-26 23:54:26,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 40 remaining) [2023-08-26 23:54:26,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 40 remaining) [2023-08-26 23:54:26,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 40 remaining) [2023-08-26 23:54:26,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (21 of 40 remaining) [2023-08-26 23:54:26,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 40 remaining) [2023-08-26 23:54:26,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 40 remaining) [2023-08-26 23:54:26,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 40 remaining) [2023-08-26 23:54:26,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 40 remaining) [2023-08-26 23:54:26,534 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 40 remaining) [2023-08-26 23:54:26,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 40 remaining) [2023-08-26 23:54:26,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 40 remaining) [2023-08-26 23:54:26,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 40 remaining) [2023-08-26 23:54:26,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 40 remaining) [2023-08-26 23:54:26,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 40 remaining) [2023-08-26 23:54:26,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 40 remaining) [2023-08-26 23:54:26,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 40 remaining) [2023-08-26 23:54:26,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 40 remaining) [2023-08-26 23:54:26,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 40 remaining) [2023-08-26 23:54:26,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 40 remaining) [2023-08-26 23:54:26,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 40 remaining) [2023-08-26 23:54:26,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 40 remaining) [2023-08-26 23:54:26,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 40 remaining) [2023-08-26 23:54:26,535 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 40 remaining) [2023-08-26 23:54:26,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 40 remaining) [2023-08-26 23:54:26,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 40 remaining) [2023-08-26 23:54:26,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 23:54:26,536 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 23:54:26,539 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 23:54:26,539 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 23:54:26,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 11:54:26 BasicIcfg [2023-08-26 23:54:26,541 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 23:54:26,541 INFO L158 Benchmark]: Toolchain (without parser) took 21694.06ms. Allocated memory was 343.9MB in the beginning and 889.2MB in the end (delta: 545.3MB). Free memory was 319.2MB in the beginning and 663.7MB in the end (delta: -344.5MB). Peak memory consumption was 203.8MB. Max. memory is 16.0GB. [2023-08-26 23:54:26,541 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 343.9MB. Free memory was 321.1MB in the beginning and 321.0MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 23:54:26,542 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.74ms. Allocated memory is still 343.9MB. Free memory was 319.2MB in the beginning and 307.9MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-26 23:54:26,542 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.31ms. Allocated memory is still 343.9MB. Free memory was 307.9MB in the beginning and 305.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 23:54:26,542 INFO L158 Benchmark]: Boogie Preprocessor took 28.96ms. Allocated memory is still 343.9MB. Free memory was 305.8MB in the beginning and 304.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 23:54:26,542 INFO L158 Benchmark]: RCFGBuilder took 477.65ms. Allocated memory is still 343.9MB. Free memory was 304.5MB in the beginning and 282.0MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-26 23:54:26,542 INFO L158 Benchmark]: TraceAbstraction took 20927.20ms. Allocated memory was 343.9MB in the beginning and 889.2MB in the end (delta: 545.3MB). Free memory was 282.0MB in the beginning and 663.7MB in the end (delta: -381.7MB). Peak memory consumption was 166.1MB. Max. memory is 16.0GB. [2023-08-26 23:54:26,543 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 343.9MB. Free memory was 321.1MB in the beginning and 321.0MB in the end (delta: 157.3kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 211.74ms. Allocated memory is still 343.9MB. Free memory was 319.2MB in the beginning and 307.9MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.31ms. Allocated memory is still 343.9MB. Free memory was 307.9MB in the beginning and 305.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.96ms. Allocated memory is still 343.9MB. Free memory was 305.8MB in the beginning and 304.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 477.65ms. Allocated memory is still 343.9MB. Free memory was 304.5MB in the beginning and 282.0MB in the end (delta: 22.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 20927.20ms. Allocated memory was 343.9MB in the beginning and 889.2MB in the end (delta: 545.3MB). Free memory was 282.0MB in the beginning and 663.7MB in the end (delta: -381.7MB). Peak memory consumption was 166.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 11.3s, 244 PlacesBefore, 44 PlacesAfterwards, 254 TransitionsBefore, 34 TransitionsAfterwards, 22848 CoEnabledTransitionPairs, 7 FixpointIterations, 58 TrivialSequentialCompositions, 188 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 55 ConcurrentYvCompositions, 20 ChoiceCompositions, 327 TotalNumberOfCompositions, 22055 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 22055, independent: 22055, independent conditional: 0, independent unconditional: 22055, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 13714, independent: 13714, independent conditional: 0, independent unconditional: 13714, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 22055, independent: 8341, independent conditional: 0, independent unconditional: 8341, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 13714, unknown conditional: 0, unknown unconditional: 13714] , Statistics on independence cache: Total cache size (in pairs): 108, Positive cache size: 108, Positive conditional cache size: 0, Positive unconditional cache size: 108, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 405 locations, 40 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 20.8s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 11.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 273 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 273 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 576 IncrementalHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 0 mSDtfsCounter, 576 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 53 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=10, InterpolantAutomatonStates: 56, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 121 NumberOfCodeBlocks, 121 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 3449 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 19 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 23:54:26,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...