/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 13:26:19,072 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 13:26:19,117 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 13:26:19,121 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 13:26:19,121 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 13:26:19,149 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 13:26:19,150 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 13:26:19,150 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 13:26:19,151 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 13:26:19,151 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 13:26:19,151 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 13:26:19,152 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 13:26:19,152 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 13:26:19,153 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 13:26:19,153 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 13:26:19,153 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 13:26:19,154 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 13:26:19,154 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 13:26:19,154 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 13:26:19,155 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 13:26:19,155 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 13:26:19,158 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 13:26:19,158 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 13:26:19,159 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 13:26:19,162 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 13:26:19,162 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 13:26:19,163 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 13:26:19,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 13:26:19,164 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 13:26:19,164 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 13:26:19,165 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 13:26:19,165 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 13:26:19,165 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 13:26:19,165 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 13:26:19,166 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 13:26:19,166 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 13:26:19,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 13:26:19,493 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 13:26:19,495 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 13:26:19,496 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 13:26:19,496 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 13:26:19,497 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c [2023-08-27 13:26:20,692 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 13:26:20,937 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 13:26:20,937 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c [2023-08-27 13:26:20,947 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2c9db11f/1416ba503512466d8f82e6866a3ee68f/FLAG0874db720 [2023-08-27 13:26:20,962 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2c9db11f/1416ba503512466d8f82e6866a3ee68f [2023-08-27 13:26:20,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 13:26:20,969 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 13:26:20,972 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 13:26:20,972 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 13:26:20,975 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 13:26:20,976 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:26:20" (1/1) ... [2023-08-27 13:26:20,977 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c725c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:26:20, skipping insertion in model container [2023-08-27 13:26:20,977 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:26:20" (1/1) ... [2023-08-27 13:26:21,001 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 13:26:21,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 13:26:21,181 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 13:26:21,218 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 13:26:21,225 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 13:26:21,225 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 13:26:21,233 INFO L206 MainTranslator]: Completed translation [2023-08-27 13:26:21,234 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:26:21 WrapperNode [2023-08-27 13:26:21,235 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 13:26:21,236 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 13:26:21,236 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 13:26:21,236 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 13:26:21,242 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:26:21" (1/1) ... [2023-08-27 13:26:21,251 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:26:21" (1/1) ... [2023-08-27 13:26:21,293 INFO L138 Inliner]: procedures = 21, calls = 49, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 131 [2023-08-27 13:26:21,293 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 13:26:21,295 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 13:26:21,295 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 13:26:21,295 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 13:26:21,303 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:26:21" (1/1) ... [2023-08-27 13:26:21,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:26:21" (1/1) ... [2023-08-27 13:26:21,315 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:26:21" (1/1) ... [2023-08-27 13:26:21,316 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:26:21" (1/1) ... [2023-08-27 13:26:21,324 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:26:21" (1/1) ... [2023-08-27 13:26:21,326 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:26:21" (1/1) ... [2023-08-27 13:26:21,328 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:26:21" (1/1) ... [2023-08-27 13:26:21,329 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:26:21" (1/1) ... [2023-08-27 13:26:21,339 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 13:26:21,340 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 13:26:21,340 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 13:26:21,340 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 13:26:21,341 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:26:21" (1/1) ... [2023-08-27 13:26:21,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 13:26:21,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:26:21,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 13:26:21,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 13:26:21,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 13:26:21,396 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 13:26:21,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 13:26:21,396 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 13:26:21,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 13:26:21,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 13:26:21,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 13:26:21,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 13:26:21,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 13:26:21,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 13:26:21,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 13:26:21,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 13:26:21,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 13:26:21,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 13:26:21,399 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 13:26:21,477 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 13:26:21,479 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 13:26:21,678 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 13:26:21,790 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 13:26:21,790 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 13:26:21,792 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:26:21 BoogieIcfgContainer [2023-08-27 13:26:21,792 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 13:26:21,794 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 13:26:21,794 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 13:26:21,802 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 13:26:21,803 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 01:26:20" (1/3) ... [2023-08-27 13:26:21,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603f0c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:26:21, skipping insertion in model container [2023-08-27 13:26:21,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:26:21" (2/3) ... [2023-08-27 13:26:21,804 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@603f0c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:26:21, skipping insertion in model container [2023-08-27 13:26:21,804 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:26:21" (3/3) ... [2023-08-27 13:26:21,806 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bluetooth.wvr.c [2023-08-27 13:26:21,821 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 13:26:21,821 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 13:26:21,822 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 13:26:21,901 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 13:26:21,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 137 transitions, 290 flow [2023-08-27 13:26:22,051 INFO L124 PetriNetUnfolderBase]: 9/135 cut-off events. [2023-08-27 13:26:22,052 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 13:26:22,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 135 events. 9/135 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 0 based on Foata normal form. 0/117 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2023-08-27 13:26:22,059 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 137 transitions, 290 flow [2023-08-27 13:26:22,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 126 transitions, 264 flow [2023-08-27 13:26:22,070 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 13:26:22,083 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 124 places, 126 transitions, 264 flow [2023-08-27 13:26:22,087 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 124 places, 126 transitions, 264 flow [2023-08-27 13:26:22,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 126 transitions, 264 flow [2023-08-27 13:26:22,138 INFO L124 PetriNetUnfolderBase]: 9/126 cut-off events. [2023-08-27 13:26:22,138 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 13:26:22,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 126 events. 9/126 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 76 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 96. Up to 2 conditions per place. [2023-08-27 13:26:22,140 INFO L119 LiptonReduction]: Number of co-enabled transitions 756 [2023-08-27 13:26:25,399 INFO L134 LiptonReduction]: Checked pairs total: 4996 [2023-08-27 13:26:25,399 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-27 13:26:25,411 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 13:26:25,416 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;@2bc5418f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 13:26:25,416 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-08-27 13:26:25,420 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 13:26:25,420 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-08-27 13:26:25,420 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 13:26:25,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:26:25,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 13:26:25,421 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 13:26:25,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:26:25,425 INFO L85 PathProgramCache]: Analyzing trace with hash 552179, now seen corresponding path program 1 times [2023-08-27 13:26:25,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:26:25,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354254758] [2023-08-27 13:26:25,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:26:25,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:26:25,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:26:25,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:26:25,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:26:25,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354254758] [2023-08-27 13:26:25,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354254758] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:26:25,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:26:25,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 13:26:25,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371021561] [2023-08-27 13:26:25,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:26:25,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:26:25,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:26:25,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:26:25,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:26:25,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 256 [2023-08-27 13:26:25,718 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:25,718 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:26:25,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 256 [2023-08-27 13:26:25,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:26:25,868 INFO L124 PetriNetUnfolderBase]: 308/530 cut-off events. [2023-08-27 13:26:25,868 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-08-27 13:26:25,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1073 conditions, 530 events. 308/530 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2226 event pairs, 148 based on Foata normal form. 0/337 useless extension candidates. Maximal degree in co-relation 988. Up to 507 conditions per place. [2023-08-27 13:26:25,878 INFO L140 encePairwiseOnDemand]: 249/256 looper letters, 30 selfloop transitions, 3 changer transitions 0/35 dead transitions. [2023-08-27 13:26:25,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 35 transitions, 151 flow [2023-08-27 13:26:25,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:26:25,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:26:25,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2023-08-27 13:26:25,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4661458333333333 [2023-08-27 13:26:25,898 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 358 transitions. [2023-08-27 13:26:25,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 358 transitions. [2023-08-27 13:26:25,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:26:25,904 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 358 transitions. [2023-08-27 13:26:25,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:25,913 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:25,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:25,915 INFO L175 Difference]: Start difference. First operand has 35 places, 30 transitions, 72 flow. Second operand 3 states and 358 transitions. [2023-08-27 13:26:25,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 35 transitions, 151 flow [2023-08-27 13:26:25,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 141 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 13:26:25,920 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 89 flow [2023-08-27 13:26:25,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2023-08-27 13:26:25,925 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2023-08-27 13:26:25,925 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 89 flow [2023-08-27 13:26:25,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:25,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:26:25,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 13:26:25,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 13:26:25,926 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 13:26:25,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:26:25,935 INFO L85 PathProgramCache]: Analyzing trace with hash 17117993, now seen corresponding path program 1 times [2023-08-27 13:26:25,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:26:25,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132389550] [2023-08-27 13:26:25,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:26:25,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:26:25,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:26:26,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:26:26,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:26:26,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132389550] [2023-08-27 13:26:26,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132389550] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:26:26,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:26:26,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 13:26:26,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942993975] [2023-08-27 13:26:26,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:26:26,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 13:26:26,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:26:26,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 13:26:26,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 13:26:26,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 256 [2023-08-27 13:26:26,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:26,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:26:26,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 256 [2023-08-27 13:26:26,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:26:26,231 INFO L124 PetriNetUnfolderBase]: 329/604 cut-off events. [2023-08-27 13:26:26,231 INFO L125 PetriNetUnfolderBase]: For 39/39 co-relation queries the response was YES. [2023-08-27 13:26:26,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1308 conditions, 604 events. 329/604 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2824 event pairs, 80 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 449. Up to 428 conditions per place. [2023-08-27 13:26:26,235 INFO L140 encePairwiseOnDemand]: 240/256 looper letters, 45 selfloop transitions, 10 changer transitions 0/56 dead transitions. [2023-08-27 13:26:26,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 56 transitions, 261 flow [2023-08-27 13:26:26,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 13:26:26,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 13:26:26,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 471 transitions. [2023-08-27 13:26:26,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4599609375 [2023-08-27 13:26:26,237 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 471 transitions. [2023-08-27 13:26:26,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 471 transitions. [2023-08-27 13:26:26,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:26:26,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 471 transitions. [2023-08-27 13:26:26,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:26,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:26,242 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:26,242 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 89 flow. Second operand 4 states and 471 transitions. [2023-08-27 13:26:26,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 56 transitions, 261 flow [2023-08-27 13:26:26,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 56 transitions, 257 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:26:26,244 INFO L231 Difference]: Finished difference. Result has 39 places, 41 transitions, 182 flow [2023-08-27 13:26:26,245 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=39, PETRI_TRANSITIONS=41} [2023-08-27 13:26:26,245 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2023-08-27 13:26:26,246 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 41 transitions, 182 flow [2023-08-27 13:26:26,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:26,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:26:26,246 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 13:26:26,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 13:26:26,247 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 13:26:26,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:26:26,247 INFO L85 PathProgramCache]: Analyzing trace with hash 17117994, now seen corresponding path program 1 times [2023-08-27 13:26:26,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:26:26,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016002455] [2023-08-27 13:26:26,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:26:26,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:26:26,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:26:26,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:26:26,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:26:26,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016002455] [2023-08-27 13:26:26,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016002455] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:26:26,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:26:26,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 13:26:26,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657661868] [2023-08-27 13:26:26,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:26:26,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 13:26:26,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:26:26,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 13:26:26,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 13:26:26,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 256 [2023-08-27 13:26:26,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 41 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:26,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:26:26,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 256 [2023-08-27 13:26:26,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:26:26,472 INFO L124 PetriNetUnfolderBase]: 379/688 cut-off events. [2023-08-27 13:26:26,472 INFO L125 PetriNetUnfolderBase]: For 385/385 co-relation queries the response was YES. [2023-08-27 13:26:26,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1827 conditions, 688 events. 379/688 cut-off events. For 385/385 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3163 event pairs, 124 based on Foata normal form. 64/676 useless extension candidates. Maximal degree in co-relation 646. Up to 432 conditions per place. [2023-08-27 13:26:26,477 INFO L140 encePairwiseOnDemand]: 244/256 looper letters, 50 selfloop transitions, 10 changer transitions 0/61 dead transitions. [2023-08-27 13:26:26,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 61 transitions, 365 flow [2023-08-27 13:26:26,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 13:26:26,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 13:26:26,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 466 transitions. [2023-08-27 13:26:26,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.455078125 [2023-08-27 13:26:26,479 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 466 transitions. [2023-08-27 13:26:26,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 466 transitions. [2023-08-27 13:26:26,479 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:26:26,479 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 466 transitions. [2023-08-27 13:26:26,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:26,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:26,483 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:26,483 INFO L175 Difference]: Start difference. First operand has 39 places, 41 transitions, 182 flow. Second operand 4 states and 466 transitions. [2023-08-27 13:26:26,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 61 transitions, 365 flow [2023-08-27 13:26:26,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 61 transitions, 365 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 13:26:26,487 INFO L231 Difference]: Finished difference. Result has 43 places, 44 transitions, 247 flow [2023-08-27 13:26:26,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=247, PETRI_PLACES=43, PETRI_TRANSITIONS=44} [2023-08-27 13:26:26,487 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2023-08-27 13:26:26,488 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 44 transitions, 247 flow [2023-08-27 13:26:26,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:26,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:26:26,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:26:26,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 13:26:26,489 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 13:26:26,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:26:26,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1973361400, now seen corresponding path program 1 times [2023-08-27 13:26:26,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:26:26,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269929963] [2023-08-27 13:26:26,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:26:26,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:26:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:26:26,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:26:26,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:26:26,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269929963] [2023-08-27 13:26:26,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269929963] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:26:26,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:26:26,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 13:26:26,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699888406] [2023-08-27 13:26:26,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:26:26,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 13:26:26,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:26:26,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 13:26:26,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-27 13:26:26,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 256 [2023-08-27 13:26:26,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 44 transitions, 247 flow. Second operand has 5 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:26,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:26:26,595 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 256 [2023-08-27 13:26:26,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:26:26,750 INFO L124 PetriNetUnfolderBase]: 409/797 cut-off events. [2023-08-27 13:26:26,751 INFO L125 PetriNetUnfolderBase]: For 881/887 co-relation queries the response was YES. [2023-08-27 13:26:26,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2238 conditions, 797 events. 409/797 cut-off events. For 881/887 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4233 event pairs, 26 based on Foata normal form. 76/869 useless extension candidates. Maximal degree in co-relation 768. Up to 341 conditions per place. [2023-08-27 13:26:26,756 INFO L140 encePairwiseOnDemand]: 240/256 looper letters, 54 selfloop transitions, 23 changer transitions 0/80 dead transitions. [2023-08-27 13:26:26,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 80 transitions, 527 flow [2023-08-27 13:26:26,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 13:26:26,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 13:26:26,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 607 transitions. [2023-08-27 13:26:26,758 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47421875 [2023-08-27 13:26:26,758 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 607 transitions. [2023-08-27 13:26:26,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 607 transitions. [2023-08-27 13:26:26,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:26:26,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 607 transitions. [2023-08-27 13:26:26,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.4) internal successors, (607), 5 states have internal predecessors, (607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:26,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:26,763 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:26,763 INFO L175 Difference]: Start difference. First operand has 43 places, 44 transitions, 247 flow. Second operand 5 states and 607 transitions. [2023-08-27 13:26:26,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 80 transitions, 527 flow [2023-08-27 13:26:26,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 80 transitions, 524 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:26:26,767 INFO L231 Difference]: Finished difference. Result has 48 places, 56 transitions, 430 flow [2023-08-27 13:26:26,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=430, PETRI_PLACES=48, PETRI_TRANSITIONS=56} [2023-08-27 13:26:26,768 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 13 predicate places. [2023-08-27 13:26:26,769 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 56 transitions, 430 flow [2023-08-27 13:26:26,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:26,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:26:26,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:26:26,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 13:26:26,770 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 13:26:26,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:26:26,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1033488158, now seen corresponding path program 1 times [2023-08-27 13:26:26,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:26:26,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428581881] [2023-08-27 13:26:26,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:26:26,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:26:26,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:26:26,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:26:26,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:26:26,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428581881] [2023-08-27 13:26:26,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428581881] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:26:26,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:26:26,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 13:26:26,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783427374] [2023-08-27 13:26:26,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:26:26,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 13:26:26,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:26:26,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 13:26:26,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 13:26:26,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 256 [2023-08-27 13:26:26,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 56 transitions, 430 flow. Second operand has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:26,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:26:26,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 256 [2023-08-27 13:26:26,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:26:27,032 INFO L124 PetriNetUnfolderBase]: 450/844 cut-off events. [2023-08-27 13:26:27,033 INFO L125 PetriNetUnfolderBase]: For 1804/1812 co-relation queries the response was YES. [2023-08-27 13:26:27,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2952 conditions, 844 events. 450/844 cut-off events. For 1804/1812 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4321 event pairs, 64 based on Foata normal form. 34/871 useless extension candidates. Maximal degree in co-relation 1370. Up to 630 conditions per place. [2023-08-27 13:26:27,044 INFO L140 encePairwiseOnDemand]: 246/256 looper letters, 62 selfloop transitions, 11 changer transitions 0/76 dead transitions. [2023-08-27 13:26:27,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 76 transitions, 669 flow [2023-08-27 13:26:27,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 13:26:27,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 13:26:27,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 476 transitions. [2023-08-27 13:26:27,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46484375 [2023-08-27 13:26:27,047 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 476 transitions. [2023-08-27 13:26:27,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 476 transitions. [2023-08-27 13:26:27,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:26:27,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 476 transitions. [2023-08-27 13:26:27,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 119.0) internal successors, (476), 4 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:27,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:27,052 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 256.0) internal successors, (1280), 5 states have internal predecessors, (1280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:27,052 INFO L175 Difference]: Start difference. First operand has 48 places, 56 transitions, 430 flow. Second operand 4 states and 476 transitions. [2023-08-27 13:26:27,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 76 transitions, 669 flow [2023-08-27 13:26:27,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 76 transitions, 651 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-27 13:26:27,059 INFO L231 Difference]: Finished difference. Result has 50 places, 57 transitions, 483 flow [2023-08-27 13:26:27,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=369, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=483, PETRI_PLACES=50, PETRI_TRANSITIONS=57} [2023-08-27 13:26:27,061 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 15 predicate places. [2023-08-27 13:26:27,061 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 57 transitions, 483 flow [2023-08-27 13:26:27,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:27,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:26:27,062 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:26:27,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 13:26:27,062 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 13:26:27,062 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:26:27,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1044670502, now seen corresponding path program 1 times [2023-08-27 13:26:27,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:26:27,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562060663] [2023-08-27 13:26:27,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:26:27,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:26:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:26:27,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:26:27,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:26:27,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562060663] [2023-08-27 13:26:27,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562060663] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:26:27,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:26:27,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 13:26:27,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724583807] [2023-08-27 13:26:27,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:26:27,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 13:26:27,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:26:27,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 13:26:27,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 13:26:27,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 256 [2023-08-27 13:26:27,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 57 transitions, 483 flow. Second operand has 6 states, 6 states have (on average 108.33333333333333) internal successors, (650), 6 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:27,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:26:27,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 256 [2023-08-27 13:26:27,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:26:27,366 INFO L124 PetriNetUnfolderBase]: 439/851 cut-off events. [2023-08-27 13:26:27,367 INFO L125 PetriNetUnfolderBase]: For 2345/2353 co-relation queries the response was YES. [2023-08-27 13:26:27,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2959 conditions, 851 events. 439/851 cut-off events. For 2345/2353 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4482 event pairs, 14 based on Foata normal form. 60/907 useless extension candidates. Maximal degree in co-relation 1668. Up to 253 conditions per place. [2023-08-27 13:26:27,372 INFO L140 encePairwiseOnDemand]: 242/256 looper letters, 55 selfloop transitions, 32 changer transitions 0/90 dead transitions. [2023-08-27 13:26:27,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 90 transitions, 751 flow [2023-08-27 13:26:27,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 13:26:27,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 13:26:27,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 718 transitions. [2023-08-27 13:26:27,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4674479166666667 [2023-08-27 13:26:27,375 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 718 transitions. [2023-08-27 13:26:27,375 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 718 transitions. [2023-08-27 13:26:27,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:26:27,375 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 718 transitions. [2023-08-27 13:26:27,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.66666666666667) internal successors, (718), 6 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:27,379 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 256.0) internal successors, (1792), 7 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:27,379 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 256.0) internal successors, (1792), 7 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:27,379 INFO L175 Difference]: Start difference. First operand has 50 places, 57 transitions, 483 flow. Second operand 6 states and 718 transitions. [2023-08-27 13:26:27,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 90 transitions, 751 flow [2023-08-27 13:26:27,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 90 transitions, 734 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 13:26:27,385 INFO L231 Difference]: Finished difference. Result has 50 places, 56 transitions, 530 flow [2023-08-27 13:26:27,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=530, PETRI_PLACES=50, PETRI_TRANSITIONS=56} [2023-08-27 13:26:27,387 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 15 predicate places. [2023-08-27 13:26:27,390 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 56 transitions, 530 flow [2023-08-27 13:26:27,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.33333333333333) internal successors, (650), 6 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:27,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:26:27,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:26:27,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 13:26:27,391 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 13:26:27,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:26:27,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1973349322, now seen corresponding path program 1 times [2023-08-27 13:26:27,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:26:27,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600055205] [2023-08-27 13:26:27,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:26:27,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:26:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:26:27,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:26:27,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:26:27,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600055205] [2023-08-27 13:26:27,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600055205] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:26:27,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:26:27,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 13:26:27,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177424173] [2023-08-27 13:26:27,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:26:27,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 13:26:27,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:26:27,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 13:26:27,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 13:26:27,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 256 [2023-08-27 13:26:27,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 56 transitions, 530 flow. Second operand has 5 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:27,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:26:27,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 256 [2023-08-27 13:26:27,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:26:27,648 INFO L124 PetriNetUnfolderBase]: 457/881 cut-off events. [2023-08-27 13:26:27,648 INFO L125 PetriNetUnfolderBase]: For 2677/2685 co-relation queries the response was YES. [2023-08-27 13:26:27,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3291 conditions, 881 events. 457/881 cut-off events. For 2677/2685 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 4612 event pairs, 82 based on Foata normal form. 38/917 useless extension candidates. Maximal degree in co-relation 1880. Up to 363 conditions per place. [2023-08-27 13:26:27,655 INFO L140 encePairwiseOnDemand]: 245/256 looper letters, 52 selfloop transitions, 29 changer transitions 0/84 dead transitions. [2023-08-27 13:26:27,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 84 transitions, 827 flow [2023-08-27 13:26:27,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 13:26:27,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 13:26:27,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 594 transitions. [2023-08-27 13:26:27,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4640625 [2023-08-27 13:26:27,657 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 594 transitions. [2023-08-27 13:26:27,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 594 transitions. [2023-08-27 13:26:27,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:26:27,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 594 transitions. [2023-08-27 13:26:27,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.8) internal successors, (594), 5 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:27,661 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:27,661 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:27,661 INFO L175 Difference]: Start difference. First operand has 50 places, 56 transitions, 530 flow. Second operand 5 states and 594 transitions. [2023-08-27 13:26:27,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 84 transitions, 827 flow [2023-08-27 13:26:27,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 84 transitions, 702 flow, removed 24 selfloop flow, removed 5 redundant places. [2023-08-27 13:26:27,666 INFO L231 Difference]: Finished difference. Result has 51 places, 58 transitions, 584 flow [2023-08-27 13:26:27,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=584, PETRI_PLACES=51, PETRI_TRANSITIONS=58} [2023-08-27 13:26:27,667 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 16 predicate places. [2023-08-27 13:26:27,667 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 58 transitions, 584 flow [2023-08-27 13:26:27,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:27,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:26:27,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:26:27,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 13:26:27,668 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 13:26:27,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:26:27,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1044271141, now seen corresponding path program 1 times [2023-08-27 13:26:27,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:26:27,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760957257] [2023-08-27 13:26:27,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:26:27,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:26:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:26:27,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:26:27,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:26:27,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760957257] [2023-08-27 13:26:27,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760957257] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:26:27,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:26:27,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 13:26:27,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4770553] [2023-08-27 13:26:27,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:26:27,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 13:26:27,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:26:27,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 13:26:27,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-27 13:26:27,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 256 [2023-08-27 13:26:27,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 58 transitions, 584 flow. Second operand has 6 states, 6 states have (on average 108.33333333333333) internal successors, (650), 6 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:27,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:26:27,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 256 [2023-08-27 13:26:27,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:26:27,897 INFO L124 PetriNetUnfolderBase]: 388/776 cut-off events. [2023-08-27 13:26:27,897 INFO L125 PetriNetUnfolderBase]: For 2782/2790 co-relation queries the response was YES. [2023-08-27 13:26:27,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2673 conditions, 776 events. 388/776 cut-off events. For 2782/2790 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4071 event pairs, 86 based on Foata normal form. 50/826 useless extension candidates. Maximal degree in co-relation 1692. Up to 356 conditions per place. [2023-08-27 13:26:27,902 INFO L140 encePairwiseOnDemand]: 247/256 looper letters, 52 selfloop transitions, 26 changer transitions 0/81 dead transitions. [2023-08-27 13:26:27,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 81 transitions, 733 flow [2023-08-27 13:26:27,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 13:26:27,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 13:26:27,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 704 transitions. [2023-08-27 13:26:27,905 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-08-27 13:26:27,905 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 704 transitions. [2023-08-27 13:26:27,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 704 transitions. [2023-08-27 13:26:27,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:26:27,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 704 transitions. [2023-08-27 13:26:27,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 117.33333333333333) internal successors, (704), 6 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:27,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 256.0) internal successors, (1792), 7 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:27,909 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 256.0) internal successors, (1792), 7 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:27,909 INFO L175 Difference]: Start difference. First operand has 51 places, 58 transitions, 584 flow. Second operand 6 states and 704 transitions. [2023-08-27 13:26:27,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 81 transitions, 733 flow [2023-08-27 13:26:27,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 81 transitions, 687 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-27 13:26:27,916 INFO L231 Difference]: Finished difference. Result has 52 places, 54 transitions, 521 flow [2023-08-27 13:26:27,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=521, PETRI_PLACES=52, PETRI_TRANSITIONS=54} [2023-08-27 13:26:27,916 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 17 predicate places. [2023-08-27 13:26:27,916 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 54 transitions, 521 flow [2023-08-27 13:26:27,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 108.33333333333333) internal successors, (650), 6 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:27,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:26:27,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:26:27,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 13:26:27,917 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 13:26:27,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:26:27,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1557818657, now seen corresponding path program 1 times [2023-08-27 13:26:27,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:26:27,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961066871] [2023-08-27 13:26:27,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:26:27,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:26:27,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:26:28,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:26:28,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:26:28,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961066871] [2023-08-27 13:26:28,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961066871] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:26:28,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:26:28,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 13:26:28,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714489049] [2023-08-27 13:26:28,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:26:28,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:26:28,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:26:28,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:26:28,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:26:28,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 256 [2023-08-27 13:26:28,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 54 transitions, 521 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:28,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:26:28,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 256 [2023-08-27 13:26:28,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:26:28,123 INFO L124 PetriNetUnfolderBase]: 284/572 cut-off events. [2023-08-27 13:26:28,123 INFO L125 PetriNetUnfolderBase]: For 1826/1844 co-relation queries the response was YES. [2023-08-27 13:26:28,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2272 conditions, 572 events. 284/572 cut-off events. For 1826/1844 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2784 event pairs, 125 based on Foata normal form. 50/618 useless extension candidates. Maximal degree in co-relation 1671. Up to 362 conditions per place. [2023-08-27 13:26:28,127 INFO L140 encePairwiseOnDemand]: 252/256 looper letters, 62 selfloop transitions, 3 changer transitions 2/69 dead transitions. [2023-08-27 13:26:28,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 69 transitions, 742 flow [2023-08-27 13:26:28,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:26:28,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:26:28,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-08-27 13:26:28,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46484375 [2023-08-27 13:26:28,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-08-27 13:26:28,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-08-27 13:26:28,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:26:28,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-08-27 13:26:28,130 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:28,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:28,132 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 256.0) internal successors, (1024), 4 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:28,132 INFO L175 Difference]: Start difference. First operand has 52 places, 54 transitions, 521 flow. Second operand 3 states and 357 transitions. [2023-08-27 13:26:28,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 69 transitions, 742 flow [2023-08-27 13:26:28,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 69 transitions, 707 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-27 13:26:28,137 INFO L231 Difference]: Finished difference. Result has 52 places, 54 transitions, 496 flow [2023-08-27 13:26:28,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=496, PETRI_PLACES=52, PETRI_TRANSITIONS=54} [2023-08-27 13:26:28,138 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 17 predicate places. [2023-08-27 13:26:28,138 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 54 transitions, 496 flow [2023-08-27 13:26:28,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:28,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:26:28,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:26:28,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 13:26:28,139 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 13:26:28,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:26:28,139 INFO L85 PathProgramCache]: Analyzing trace with hash -471139842, now seen corresponding path program 1 times [2023-08-27 13:26:28,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:26:28,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491002656] [2023-08-27 13:26:28,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:26:28,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:26:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:26:28,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:26:28,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:26:28,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491002656] [2023-08-27 13:26:28,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491002656] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:26:28,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:26:28,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 13:26:28,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710572681] [2023-08-27 13:26:28,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:26:28,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 13:26:28,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:26:28,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 13:26:28,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 13:26:28,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 256 [2023-08-27 13:26:28,270 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 54 transitions, 496 flow. Second operand has 5 states, 5 states have (on average 106.8) internal successors, (534), 5 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:28,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:26:28,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 256 [2023-08-27 13:26:28,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:26:28,394 INFO L124 PetriNetUnfolderBase]: 255/524 cut-off events. [2023-08-27 13:26:28,394 INFO L125 PetriNetUnfolderBase]: For 1391/1391 co-relation queries the response was YES. [2023-08-27 13:26:28,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2088 conditions, 524 events. 255/524 cut-off events. For 1391/1391 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2483 event pairs, 66 based on Foata normal form. 6/528 useless extension candidates. Maximal degree in co-relation 1566. Up to 458 conditions per place. [2023-08-27 13:26:28,398 INFO L140 encePairwiseOnDemand]: 249/256 looper letters, 55 selfloop transitions, 11 changer transitions 0/68 dead transitions. [2023-08-27 13:26:28,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 68 transitions, 684 flow [2023-08-27 13:26:28,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 13:26:28,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 13:26:28,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2023-08-27 13:26:28,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.434375 [2023-08-27 13:26:28,401 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2023-08-27 13:26:28,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2023-08-27 13:26:28,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:26:28,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2023-08-27 13:26:28,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:28,404 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:28,405 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:28,405 INFO L175 Difference]: Start difference. First operand has 52 places, 54 transitions, 496 flow. Second operand 5 states and 556 transitions. [2023-08-27 13:26:28,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 68 transitions, 684 flow [2023-08-27 13:26:28,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 68 transitions, 671 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 13:26:28,410 INFO L231 Difference]: Finished difference. Result has 55 places, 57 transitions, 546 flow [2023-08-27 13:26:28,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=546, PETRI_PLACES=55, PETRI_TRANSITIONS=57} [2023-08-27 13:26:28,410 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 20 predicate places. [2023-08-27 13:26:28,411 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 57 transitions, 546 flow [2023-08-27 13:26:28,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 106.8) internal successors, (534), 5 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:28,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:26:28,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:26:28,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 13:26:28,411 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 13:26:28,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:26:28,412 INFO L85 PathProgramCache]: Analyzing trace with hash -333807317, now seen corresponding path program 1 times [2023-08-27 13:26:28,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:26:28,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722259724] [2023-08-27 13:26:28,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:26:28,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:26:28,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:26:28,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:26:28,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:26:28,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722259724] [2023-08-27 13:26:28,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722259724] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:26:28,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:26:28,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 13:26:28,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910785149] [2023-08-27 13:26:28,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:26:28,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:26:28,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:26:28,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:26:28,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:26:28,557 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 256 [2023-08-27 13:26:28,558 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 57 transitions, 546 flow. Second operand has 7 states, 7 states have (on average 105.57142857142857) internal successors, (739), 7 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:28,558 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:26:28,558 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 256 [2023-08-27 13:26:28,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:26:28,676 INFO L124 PetriNetUnfolderBase]: 187/410 cut-off events. [2023-08-27 13:26:28,676 INFO L125 PetriNetUnfolderBase]: For 1247/1247 co-relation queries the response was YES. [2023-08-27 13:26:28,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1592 conditions, 410 events. 187/410 cut-off events. For 1247/1247 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1962 event pairs, 12 based on Foata normal form. 38/448 useless extension candidates. Maximal degree in co-relation 1211. Up to 260 conditions per place. [2023-08-27 13:26:28,679 INFO L140 encePairwiseOnDemand]: 246/256 looper letters, 36 selfloop transitions, 21 changer transitions 11/69 dead transitions. [2023-08-27 13:26:28,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 69 transitions, 656 flow [2023-08-27 13:26:28,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:26:28,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:26:28,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 775 transitions. [2023-08-27 13:26:28,682 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43247767857142855 [2023-08-27 13:26:28,682 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 775 transitions. [2023-08-27 13:26:28,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 775 transitions. [2023-08-27 13:26:28,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:26:28,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 775 transitions. [2023-08-27 13:26:28,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.71428571428571) internal successors, (775), 7 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) [2023-08-27 13:26:28,687 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:28,687 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:28,687 INFO L175 Difference]: Start difference. First operand has 55 places, 57 transitions, 546 flow. Second operand 7 states and 775 transitions. [2023-08-27 13:26:28,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 69 transitions, 656 flow [2023-08-27 13:26:28,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 69 transitions, 605 flow, removed 9 selfloop flow, removed 6 redundant places. [2023-08-27 13:26:28,692 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 437 flow [2023-08-27 13:26:28,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=437, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2023-08-27 13:26:28,693 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 22 predicate places. [2023-08-27 13:26:28,693 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 437 flow [2023-08-27 13:26:28,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.57142857142857) internal successors, (739), 7 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:28,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:26:28,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:26:28,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 13:26:28,694 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 13:26:28,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:26:28,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1532243118, now seen corresponding path program 2 times [2023-08-27 13:26:28,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:26:28,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058077800] [2023-08-27 13:26:28,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:26:28,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:26:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:26:28,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:26:28,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:26:28,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058077800] [2023-08-27 13:26:28,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058077800] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:26:28,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:26:28,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 13:26:28,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454271986] [2023-08-27 13:26:28,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:26:28,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 13:26:28,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:26:28,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 13:26:28,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 13:26:28,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 256 [2023-08-27 13:26:28,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 437 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:28,846 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:26:28,846 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 256 [2023-08-27 13:26:28,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:26:28,948 INFO L124 PetriNetUnfolderBase]: 141/317 cut-off events. [2023-08-27 13:26:28,948 INFO L125 PetriNetUnfolderBase]: For 927/927 co-relation queries the response was YES. [2023-08-27 13:26:28,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1356 conditions, 317 events. 141/317 cut-off events. For 927/927 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1346 event pairs, 48 based on Foata normal form. 1/316 useless extension candidates. Maximal degree in co-relation 1036. Up to 194 conditions per place. [2023-08-27 13:26:28,950 INFO L140 encePairwiseOnDemand]: 252/256 looper letters, 33 selfloop transitions, 2 changer transitions 24/60 dead transitions. [2023-08-27 13:26:28,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 60 transitions, 636 flow [2023-08-27 13:26:28,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 13:26:28,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 13:26:28,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 543 transitions. [2023-08-27 13:26:28,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42421875 [2023-08-27 13:26:28,953 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 543 transitions. [2023-08-27 13:26:28,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 543 transitions. [2023-08-27 13:26:28,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:26:28,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 543 transitions. [2023-08-27 13:26:28,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:28,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:28,956 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:28,957 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 437 flow. Second operand 5 states and 543 transitions. [2023-08-27 13:26:28,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 60 transitions, 636 flow [2023-08-27 13:26:28,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 60 transitions, 524 flow, removed 17 selfloop flow, removed 10 redundant places. [2023-08-27 13:26:28,961 INFO L231 Difference]: Finished difference. Result has 52 places, 35 transitions, 268 flow [2023-08-27 13:26:28,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=268, PETRI_PLACES=52, PETRI_TRANSITIONS=35} [2023-08-27 13:26:28,962 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 17 predicate places. [2023-08-27 13:26:28,962 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 35 transitions, 268 flow [2023-08-27 13:26:28,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:28,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:26:28,962 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:26:28,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 13:26:28,963 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 13:26:28,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:26:28,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1807984674, now seen corresponding path program 3 times [2023-08-27 13:26:28,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:26:28,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046071555] [2023-08-27 13:26:28,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:26:28,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:26:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:26:29,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:26:29,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:26:29,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046071555] [2023-08-27 13:26:29,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046071555] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:26:29,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:26:29,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 13:26:29,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783260145] [2023-08-27 13:26:29,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:26:29,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:26:29,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:26:29,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:26:29,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:26:29,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 256 [2023-08-27 13:26:29,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 35 transitions, 268 flow. Second operand has 7 states, 7 states have (on average 105.71428571428571) internal successors, (740), 7 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:29,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:26:29,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 256 [2023-08-27 13:26:29,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:26:29,218 INFO L124 PetriNetUnfolderBase]: 63/158 cut-off events. [2023-08-27 13:26:29,219 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2023-08-27 13:26:29,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 574 conditions, 158 events. 63/158 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 551 event pairs, 0 based on Foata normal form. 8/166 useless extension candidates. Maximal degree in co-relation 555. Up to 110 conditions per place. [2023-08-27 13:26:29,220 INFO L140 encePairwiseOnDemand]: 248/256 looper letters, 26 selfloop transitions, 8 changer transitions 5/40 dead transitions. [2023-08-27 13:26:29,220 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 40 transitions, 316 flow [2023-08-27 13:26:29,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:26:29,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:26:29,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 759 transitions. [2023-08-27 13:26:29,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42354910714285715 [2023-08-27 13:26:29,223 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 759 transitions. [2023-08-27 13:26:29,223 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 759 transitions. [2023-08-27 13:26:29,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:26:29,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 759 transitions. [2023-08-27 13:26:29,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.42857142857143) internal successors, (759), 7 states have internal predecessors, (759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:29,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:29,228 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 256.0) internal successors, (2048), 8 states have internal predecessors, (2048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:29,228 INFO L175 Difference]: Start difference. First operand has 52 places, 35 transitions, 268 flow. Second operand 7 states and 759 transitions. [2023-08-27 13:26:29,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 40 transitions, 316 flow [2023-08-27 13:26:29,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 40 transitions, 273 flow, removed 5 selfloop flow, removed 10 redundant places. [2023-08-27 13:26:29,230 INFO L231 Difference]: Finished difference. Result has 45 places, 26 transitions, 153 flow [2023-08-27 13:26:29,230 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=153, PETRI_PLACES=45, PETRI_TRANSITIONS=26} [2023-08-27 13:26:29,231 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2023-08-27 13:26:29,231 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 26 transitions, 153 flow [2023-08-27 13:26:29,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.71428571428571) internal successors, (740), 7 states have internal predecessors, (740), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:29,232 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:26:29,232 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:26:29,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 13:26:29,232 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 13:26:29,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:26:29,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1975153103, now seen corresponding path program 2 times [2023-08-27 13:26:29,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:26:29,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652861788] [2023-08-27 13:26:29,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:26:29,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:26:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:26:29,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:26:29,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:26:29,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652861788] [2023-08-27 13:26:29,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652861788] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:26:29,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:26:29,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 13:26:29,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139943272] [2023-08-27 13:26:29,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:26:29,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:26:29,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:26:29,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:26:29,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:26:29,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 256 [2023-08-27 13:26:29,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 26 transitions, 153 flow. Second operand has 7 states, 7 states have (on average 105.57142857142857) internal successors, (739), 7 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:29,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:26:29,403 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 256 [2023-08-27 13:26:29,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:26:29,470 INFO L124 PetriNetUnfolderBase]: 34/89 cut-off events. [2023-08-27 13:26:29,470 INFO L125 PetriNetUnfolderBase]: For 94/94 co-relation queries the response was YES. [2023-08-27 13:26:29,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 89 events. 34/89 cut-off events. For 94/94 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 211 event pairs, 0 based on Foata normal form. 2/91 useless extension candidates. Maximal degree in co-relation 111. Up to 64 conditions per place. [2023-08-27 13:26:29,471 INFO L140 encePairwiseOnDemand]: 250/256 looper letters, 21 selfloop transitions, 4 changer transitions 3/28 dead transitions. [2023-08-27 13:26:29,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 28 transitions, 194 flow [2023-08-27 13:26:29,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 13:26:29,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 13:26:29,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 647 transitions. [2023-08-27 13:26:29,474 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4212239583333333 [2023-08-27 13:26:29,474 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 647 transitions. [2023-08-27 13:26:29,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 647 transitions. [2023-08-27 13:26:29,475 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:26:29,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 647 transitions. [2023-08-27 13:26:29,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.83333333333333) internal successors, (647), 6 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:29,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 256.0) internal successors, (1792), 7 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:29,479 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 256.0) internal successors, (1792), 7 states have internal predecessors, (1792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:29,479 INFO L175 Difference]: Start difference. First operand has 45 places, 26 transitions, 153 flow. Second operand 6 states and 647 transitions. [2023-08-27 13:26:29,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 28 transitions, 194 flow [2023-08-27 13:26:29,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 28 transitions, 157 flow, removed 2 selfloop flow, removed 11 redundant places. [2023-08-27 13:26:29,480 INFO L231 Difference]: Finished difference. Result has 38 places, 19 transitions, 76 flow [2023-08-27 13:26:29,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=76, PETRI_PLACES=38, PETRI_TRANSITIONS=19} [2023-08-27 13:26:29,481 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-08-27 13:26:29,481 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 19 transitions, 76 flow [2023-08-27 13:26:29,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.57142857142857) internal successors, (739), 7 states have internal predecessors, (739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:29,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:26:29,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:26:29,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 13:26:29,482 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-08-27 13:26:29,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:26:29,483 INFO L85 PathProgramCache]: Analyzing trace with hash -911158526, now seen corresponding path program 4 times [2023-08-27 13:26:29,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:26:29,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444799766] [2023-08-27 13:26:29,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:26:29,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:26:29,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:26:29,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 13:26:29,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:26:29,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444799766] [2023-08-27 13:26:29,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444799766] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:26:29,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:26:29,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 13:26:29,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965009530] [2023-08-27 13:26:29,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:26:29,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 13:26:29,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:26:29,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 13:26:29,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 13:26:29,662 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 256 [2023-08-27 13:26:29,663 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 19 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:29,663 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:26:29,663 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 256 [2023-08-27 13:26:29,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:26:29,700 INFO L124 PetriNetUnfolderBase]: 28/71 cut-off events. [2023-08-27 13:26:29,700 INFO L125 PetriNetUnfolderBase]: For 41/41 co-relation queries the response was YES. [2023-08-27 13:26:29,701 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 71 events. 28/71 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 129 event pairs, 14 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 101. Up to 57 conditions per place. [2023-08-27 13:26:29,701 INFO L140 encePairwiseOnDemand]: 252/256 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2023-08-27 13:26:29,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 22 transitions, 125 flow [2023-08-27 13:26:29,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 13:26:29,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 13:26:29,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 542 transitions. [2023-08-27 13:26:29,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4234375 [2023-08-27 13:26:29,703 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 542 transitions. [2023-08-27 13:26:29,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 542 transitions. [2023-08-27 13:26:29,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:26:29,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 542 transitions. [2023-08-27 13:26:29,705 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:29,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:29,707 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 256.0) internal successors, (1536), 6 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:29,707 INFO L175 Difference]: Start difference. First operand has 38 places, 19 transitions, 76 flow. Second operand 5 states and 542 transitions. [2023-08-27 13:26:29,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 22 transitions, 125 flow [2023-08-27 13:26:29,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 22 transitions, 104 flow, removed 2 selfloop flow, removed 9 redundant places. [2023-08-27 13:26:29,707 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2023-08-27 13:26:29,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=256, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2023-08-27 13:26:29,709 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -5 predicate places. [2023-08-27 13:26:29,709 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2023-08-27 13:26:29,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.5) internal successors, (434), 4 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 13:26:29,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 19 remaining) [2023-08-27 13:26:29,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-08-27 13:26:29,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-08-27 13:26:29,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-08-27 13:26:29,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-08-27 13:26:29,712 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-08-27 13:26:29,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-08-27 13:26:29,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-08-27 13:26:29,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (10 of 19 remaining) [2023-08-27 13:26:29,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 19 remaining) [2023-08-27 13:26:29,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 19 remaining) [2023-08-27 13:26:29,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-08-27 13:26:29,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-08-27 13:26:29,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-08-27 13:26:29,713 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-08-27 13:26:29,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-08-27 13:26:29,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-08-27 13:26:29,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-08-27 13:26:29,714 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-08-27 13:26:29,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 13:26:29,714 INFO L445 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:26:29,720 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 13:26:29,720 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 13:26:29,722 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 01:26:29 BasicIcfg [2023-08-27 13:26:29,722 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 13:26:29,723 INFO L158 Benchmark]: Toolchain (without parser) took 8753.81ms. Allocated memory was 341.8MB in the beginning and 524.3MB in the end (delta: 182.5MB). Free memory was 317.8MB in the beginning and 473.6MB in the end (delta: -155.8MB). Peak memory consumption was 28.1MB. Max. memory is 16.0GB. [2023-08-27 13:26:29,723 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 341.8MB. Free memory was 318.9MB in the beginning and 318.9MB in the end (delta: 94.0kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 13:26:29,723 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.08ms. Allocated memory is still 341.8MB. Free memory was 317.4MB in the beginning and 306.6MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-27 13:26:29,724 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.75ms. Allocated memory is still 341.8MB. Free memory was 306.6MB in the beginning and 304.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 13:26:29,724 INFO L158 Benchmark]: Boogie Preprocessor took 44.35ms. Allocated memory is still 341.8MB. Free memory was 304.5MB in the beginning and 303.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 13:26:29,724 INFO L158 Benchmark]: RCFGBuilder took 452.61ms. Allocated memory is still 341.8MB. Free memory was 303.0MB in the beginning and 281.0MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-27 13:26:29,724 INFO L158 Benchmark]: TraceAbstraction took 7928.36ms. Allocated memory was 341.8MB in the beginning and 524.3MB in the end (delta: 182.5MB). Free memory was 280.3MB in the beginning and 473.6MB in the end (delta: -193.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 13:26:29,726 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 341.8MB. Free memory was 318.9MB in the beginning and 318.9MB in the end (delta: 94.0kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 263.08ms. Allocated memory is still 341.8MB. Free memory was 317.4MB in the beginning and 306.6MB in the end (delta: 10.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 57.75ms. Allocated memory is still 341.8MB. Free memory was 306.6MB in the beginning and 304.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 44.35ms. Allocated memory is still 341.8MB. Free memory was 304.5MB in the beginning and 303.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 452.61ms. Allocated memory is still 341.8MB. Free memory was 303.0MB in the beginning and 281.0MB in the end (delta: 22.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 7928.36ms. Allocated memory was 341.8MB in the beginning and 524.3MB in the end (delta: 182.5MB). Free memory was 280.3MB in the beginning and 473.6MB in the end (delta: -193.2MB). There was no memory consumed. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 124 PlacesBefore, 35 PlacesAfterwards, 126 TransitionsBefore, 30 TransitionsAfterwards, 756 CoEnabledTransitionPairs, 8 FixpointIterations, 76 TrivialSequentialCompositions, 13 ConcurrentSequentialCompositions, 19 TrivialYvCompositions, 4 ConcurrentYvCompositions, 7 ChoiceCompositions, 119 TotalNumberOfCompositions, 4996 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1713, independent: 1407, independent conditional: 0, independent unconditional: 1407, dependent: 306, dependent conditional: 0, dependent unconditional: 306, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 378, independent: 354, independent conditional: 0, independent unconditional: 354, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1713, independent: 1053, independent conditional: 0, independent unconditional: 1053, dependent: 282, dependent conditional: 0, dependent unconditional: 282, unknown: 378, unknown conditional: 0, unknown unconditional: 378] , Statistics on independence cache: Total cache size (in pairs): 95, Positive cache size: 78, Positive conditional cache size: 0, Positive unconditional cache size: 78, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 43]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 43]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 48]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 70]: 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 5 procedures, 158 locations, 19 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.8s, OverallIterations: 15, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 304 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 304 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 7 mSDsCounter, 125 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1345 IncrementalHoareTripleChecker+Invalid, 1470 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 125 mSolverCounterUnsat, 11 mSDtfsCounter, 1345 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=584occurred in iteration=7, InterpolantAutomatonStates: 75, 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, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 184 NumberOfCodeBlocks, 184 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 169 ConstructedInterpolants, 0 QuantifiedInterpolants, 853 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 15 InterpolantComputations, 15 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 9 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 13:26:29,751 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...