/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-wmm/safe037.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 03:59:03,037 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 03:59:03,094 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 03:59:03,101 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 03:59:03,102 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 03:59:03,131 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 03:59:03,132 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 03:59:03,132 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 03:59:03,133 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 03:59:03,133 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 03:59:03,133 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 03:59:03,133 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 03:59:03,133 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 03:59:03,134 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 03:59:03,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 03:59:03,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 03:59:03,134 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 03:59:03,135 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 03:59:03,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 03:59:03,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 03:59:03,135 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 03:59:03,139 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 03:59:03,139 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 03:59:03,140 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 03:59:03,142 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 03:59:03,142 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 03:59:03,143 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 03:59:03,143 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 03:59:03,143 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 03:59:03,143 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 03:59:03,144 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 03:59:03,144 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 03:59:03,144 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 03:59:03,144 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 03:59:03,144 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 03:59:03,144 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 03:59:03,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 03:59:03,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 03:59:03,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 03:59:03,384 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 03:59:03,384 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 03:59:03,385 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe037.i [2023-08-27 03:59:04,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 03:59:04,677 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 03:59:04,677 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe037.i [2023-08-27 03:59:04,687 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99c314118/caa73412d3f246e4a2cacf41d84bce02/FLAGca71be33c [2023-08-27 03:59:04,699 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99c314118/caa73412d3f246e4a2cacf41d84bce02 [2023-08-27 03:59:04,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 03:59:04,701 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 03:59:04,702 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 03:59:04,702 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 03:59:04,704 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 03:59:04,710 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:59:04" (1/1) ... [2023-08-27 03:59:04,711 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74077312 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:04, skipping insertion in model container [2023-08-27 03:59:04,711 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:59:04" (1/1) ... [2023-08-27 03:59:04,756 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 03:59:05,030 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 03:59:05,039 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 03:59:05,062 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 03:59:05,063 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 03:59:05,078 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 03:59:05,102 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 03:59:05,102 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 03:59:05,106 INFO L206 MainTranslator]: Completed translation [2023-08-27 03:59:05,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:05 WrapperNode [2023-08-27 03:59:05,107 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 03:59:05,108 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 03:59:05,108 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 03:59:05,108 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 03:59:05,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:05" (1/1) ... [2023-08-27 03:59:05,140 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:05" (1/1) ... [2023-08-27 03:59:05,152 INFO L138 Inliner]: procedures = 176, calls = 60, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 75 [2023-08-27 03:59:05,152 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 03:59:05,152 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 03:59:05,153 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 03:59:05,153 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 03:59:05,160 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:05" (1/1) ... [2023-08-27 03:59:05,160 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:05" (1/1) ... [2023-08-27 03:59:05,162 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:05" (1/1) ... [2023-08-27 03:59:05,162 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:05" (1/1) ... [2023-08-27 03:59:05,166 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:05" (1/1) ... [2023-08-27 03:59:05,167 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:05" (1/1) ... [2023-08-27 03:59:05,167 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:05" (1/1) ... [2023-08-27 03:59:05,168 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:05" (1/1) ... [2023-08-27 03:59:05,170 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 03:59:05,170 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 03:59:05,170 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 03:59:05,170 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 03:59:05,171 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:05" (1/1) ... [2023-08-27 03:59:05,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 03:59:05,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 03:59:05,201 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 03:59:05,210 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 03:59:05,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 03:59:05,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 03:59:05,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 03:59:05,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 03:59:05,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 03:59:05,225 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-27 03:59:05,226 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-27 03:59:05,226 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-27 03:59:05,226 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-27 03:59:05,226 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-27 03:59:05,226 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-27 03:59:05,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 03:59:05,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 03:59:05,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 03:59:05,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 03:59:05,227 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 03:59:05,317 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 03:59:05,318 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 03:59:05,428 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 03:59:05,447 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 03:59:05,447 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 03:59:05,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:59:05 BoogieIcfgContainer [2023-08-27 03:59:05,449 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 03:59:05,450 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 03:59:05,450 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 03:59:05,452 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 03:59:05,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 03:59:04" (1/3) ... [2023-08-27 03:59:05,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5351d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:59:05, skipping insertion in model container [2023-08-27 03:59:05,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:59:05" (2/3) ... [2023-08-27 03:59:05,453 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c5351d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:59:05, skipping insertion in model container [2023-08-27 03:59:05,453 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:59:05" (3/3) ... [2023-08-27 03:59:05,454 INFO L112 eAbstractionObserver]: Analyzing ICFG safe037.i [2023-08-27 03:59:05,465 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 03:59:05,465 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-27 03:59:05,465 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 03:59:05,551 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:59:05,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 96 transitions, 207 flow [2023-08-27 03:59:05,598 INFO L124 PetriNetUnfolderBase]: 3/93 cut-off events. [2023-08-27 03:59:05,598 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:59:05,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 93 events. 3/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-08-27 03:59:05,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 96 transitions, 207 flow [2023-08-27 03:59:05,604 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 93 transitions, 195 flow [2023-08-27 03:59:05,606 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:59:05,611 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 93 transitions, 195 flow [2023-08-27 03:59:05,613 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 93 transitions, 195 flow [2023-08-27 03:59:05,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 93 transitions, 195 flow [2023-08-27 03:59:05,628 INFO L124 PetriNetUnfolderBase]: 3/93 cut-off events. [2023-08-27 03:59:05,628 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:59:05,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 93 events. 3/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 72 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-08-27 03:59:05,630 INFO L119 LiptonReduction]: Number of co-enabled transitions 2256 [2023-08-27 03:59:07,374 INFO L134 LiptonReduction]: Checked pairs total: 7051 [2023-08-27 03:59:07,374 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-08-27 03:59:07,383 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 03:59:07,387 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;@61276cc5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:59:07,387 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-27 03:59:07,389 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:59:07,389 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-27 03:59:07,389 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:59:07,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:07,390 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 03:59:07,390 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:59:07,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:07,393 INFO L85 PathProgramCache]: Analyzing trace with hash 337231519, now seen corresponding path program 1 times [2023-08-27 03:59:07,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:07,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272260345] [2023-08-27 03:59:07,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:07,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:07,519 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 03:59:07,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:07,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272260345] [2023-08-27 03:59:07,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272260345] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:07,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:07,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 03:59:07,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999588871] [2023-08-27 03:59:07,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:07,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 03:59:07,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:07,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 03:59:07,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 03:59:07,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 181 [2023-08-27 03:59:07,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states 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 03:59:07,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:07,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 181 [2023-08-27 03:59:07,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:07,688 INFO L124 PetriNetUnfolderBase]: 628/1018 cut-off events. [2023-08-27 03:59:07,688 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-08-27 03:59:07,692 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2063 conditions, 1018 events. 628/1018 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 4775 event pairs, 158 based on Foata normal form. 0/664 useless extension candidates. Maximal degree in co-relation 2052. Up to 891 conditions per place. [2023-08-27 03:59:07,700 INFO L140 encePairwiseOnDemand]: 170/181 looper letters, 32 selfloop transitions, 4 changer transitions 0/39 dead transitions. [2023-08-27 03:59:07,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 39 transitions, 165 flow [2023-08-27 03:59:07,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 03:59:07,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 03:59:07,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 278 transitions. [2023-08-27 03:59:07,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5119705340699816 [2023-08-27 03:59:07,715 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 278 transitions. [2023-08-27 03:59:07,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 278 transitions. [2023-08-27 03:59:07,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:07,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 278 transitions. [2023-08-27 03:59:07,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 0 states have call successors, (0), 0 states 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 03:59:07,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states 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 03:59:07,728 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 181.0) internal successors, (724), 4 states have internal predecessors, (724), 0 states have call successors, (0), 0 states 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 03:59:07,729 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 3 states and 278 transitions. [2023-08-27 03:59:07,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 39 transitions, 165 flow [2023-08-27 03:59:07,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 39 transitions, 160 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 03:59:07,734 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 92 flow [2023-08-27 03:59:07,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2023-08-27 03:59:07,740 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 0 predicate places. [2023-08-27 03:59:07,740 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 92 flow [2023-08-27 03:59:07,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states 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 03:59:07,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:07,741 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:07,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 03:59:07,742 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:59:07,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:07,743 INFO L85 PathProgramCache]: Analyzing trace with hash -203241349, now seen corresponding path program 1 times [2023-08-27 03:59:07,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:07,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799711729] [2023-08-27 03:59:07,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:07,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:08,064 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 03:59:08,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:08,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799711729] [2023-08-27 03:59:08,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799711729] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:08,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:08,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 03:59:08,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058954610] [2023-08-27 03:59:08,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:08,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:59:08,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:08,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:59:08,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:59:08,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 181 [2023-08-27 03:59:08,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states 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 03:59:08,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:08,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 181 [2023-08-27 03:59:08,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:08,218 INFO L124 PetriNetUnfolderBase]: 591/1062 cut-off events. [2023-08-27 03:59:08,219 INFO L125 PetriNetUnfolderBase]: For 102/102 co-relation queries the response was YES. [2023-08-27 03:59:08,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2709 conditions, 1062 events. 591/1062 cut-off events. For 102/102 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 6189 event pairs, 103 based on Foata normal form. 75/735 useless extension candidates. Maximal degree in co-relation 2698. Up to 533 conditions per place. [2023-08-27 03:59:08,223 INFO L140 encePairwiseOnDemand]: 169/181 looper letters, 46 selfloop transitions, 23 changer transitions 0/72 dead transitions. [2023-08-27 03:59:08,223 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 72 transitions, 376 flow [2023-08-27 03:59:08,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 03:59:08,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 03:59:08,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 448 transitions. [2023-08-27 03:59:08,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4950276243093923 [2023-08-27 03:59:08,225 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 448 transitions. [2023-08-27 03:59:08,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 448 transitions. [2023-08-27 03:59:08,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:08,226 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 448 transitions. [2023-08-27 03:59:08,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 89.6) internal successors, (448), 5 states have internal predecessors, (448), 0 states have call successors, (0), 0 states 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 03:59:08,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 03:59:08,230 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 03:59:08,230 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 92 flow. Second operand 5 states and 448 transitions. [2023-08-27 03:59:08,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 72 transitions, 376 flow [2023-08-27 03:59:08,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 72 transitions, 372 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 03:59:08,232 INFO L231 Difference]: Finished difference. Result has 42 places, 47 transitions, 296 flow [2023-08-27 03:59:08,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=296, PETRI_PLACES=42, PETRI_TRANSITIONS=47} [2023-08-27 03:59:08,233 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2023-08-27 03:59:08,234 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 47 transitions, 296 flow [2023-08-27 03:59:08,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 0 states have call successors, (0), 0 states 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 03:59:08,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:08,236 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:08,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 03:59:08,239 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:59:08,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:08,241 INFO L85 PathProgramCache]: Analyzing trace with hash -543430807, now seen corresponding path program 1 times [2023-08-27 03:59:08,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:08,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934438076] [2023-08-27 03:59:08,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:08,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:08,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:08,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:59:08,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:08,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934438076] [2023-08-27 03:59:08,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934438076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:08,292 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:08,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:59:08,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840727872] [2023-08-27 03:59:08,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:08,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:59:08,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:08,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:59:08,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:59:08,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 181 [2023-08-27 03:59:08,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 47 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states 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 03:59:08,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:08,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 181 [2023-08-27 03:59:08,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:08,367 INFO L124 PetriNetUnfolderBase]: 371/668 cut-off events. [2023-08-27 03:59:08,367 INFO L125 PetriNetUnfolderBase]: For 1057/1057 co-relation queries the response was YES. [2023-08-27 03:59:08,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2396 conditions, 668 events. 371/668 cut-off events. For 1057/1057 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 3342 event pairs, 115 based on Foata normal form. 0/625 useless extension candidates. Maximal degree in co-relation 2380. Up to 600 conditions per place. [2023-08-27 03:59:08,370 INFO L140 encePairwiseOnDemand]: 174/181 looper letters, 39 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2023-08-27 03:59:08,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 46 transitions, 332 flow [2023-08-27 03:59:08,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:59:08,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:59:08,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 345 transitions. [2023-08-27 03:59:08,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47651933701657456 [2023-08-27 03:59:08,371 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 345 transitions. [2023-08-27 03:59:08,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 345 transitions. [2023-08-27 03:59:08,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:08,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 345 transitions. [2023-08-27 03:59:08,372 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 0 states 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 03:59:08,373 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states 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 03:59:08,374 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states 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 03:59:08,374 INFO L175 Difference]: Start difference. First operand has 42 places, 47 transitions, 296 flow. Second operand 4 states and 345 transitions. [2023-08-27 03:59:08,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 46 transitions, 332 flow [2023-08-27 03:59:08,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 46 transitions, 332 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 03:59:08,376 INFO L231 Difference]: Finished difference. Result has 42 places, 38 transitions, 232 flow [2023-08-27 03:59:08,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=42, PETRI_TRANSITIONS=38} [2023-08-27 03:59:08,377 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2023-08-27 03:59:08,377 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 38 transitions, 232 flow [2023-08-27 03:59:08,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states 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 03:59:08,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:08,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:08,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 03:59:08,378 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:59:08,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:08,378 INFO L85 PathProgramCache]: Analyzing trace with hash -543430806, now seen corresponding path program 1 times [2023-08-27 03:59:08,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:08,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076589848] [2023-08-27 03:59:08,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:08,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:08,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:08,403 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 03:59:08,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:08,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076589848] [2023-08-27 03:59:08,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076589848] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:08,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:08,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:59:08,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81555367] [2023-08-27 03:59:08,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:08,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:59:08,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:08,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:59:08,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:59:08,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 181 [2023-08-27 03:59:08,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 38 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states 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 03:59:08,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:08,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 181 [2023-08-27 03:59:08,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:08,460 INFO L124 PetriNetUnfolderBase]: 223/408 cut-off events. [2023-08-27 03:59:08,461 INFO L125 PetriNetUnfolderBase]: For 927/927 co-relation queries the response was YES. [2023-08-27 03:59:08,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1407 conditions, 408 events. 223/408 cut-off events. For 927/927 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1627 event pairs, 27 based on Foata normal form. 76/459 useless extension candidates. Maximal degree in co-relation 1389. Up to 173 conditions per place. [2023-08-27 03:59:08,463 INFO L140 encePairwiseOnDemand]: 174/181 looper letters, 39 selfloop transitions, 7 changer transitions 0/49 dead transitions. [2023-08-27 03:59:08,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 49 transitions, 326 flow [2023-08-27 03:59:08,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:59:08,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:59:08,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 357 transitions. [2023-08-27 03:59:08,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930939226519337 [2023-08-27 03:59:08,464 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 357 transitions. [2023-08-27 03:59:08,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 357 transitions. [2023-08-27 03:59:08,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:08,464 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 357 transitions. [2023-08-27 03:59:08,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 89.25) internal successors, (357), 4 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 03:59:08,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states 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 03:59:08,466 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 181.0) internal successors, (905), 5 states have internal predecessors, (905), 0 states have call successors, (0), 0 states 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 03:59:08,466 INFO L175 Difference]: Start difference. First operand has 42 places, 38 transitions, 232 flow. Second operand 4 states and 357 transitions. [2023-08-27 03:59:08,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 49 transitions, 326 flow [2023-08-27 03:59:08,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 49 transitions, 308 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-27 03:59:08,468 INFO L231 Difference]: Finished difference. Result has 42 places, 32 transitions, 205 flow [2023-08-27 03:59:08,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=205, PETRI_PLACES=42, PETRI_TRANSITIONS=32} [2023-08-27 03:59:08,469 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2023-08-27 03:59:08,469 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 32 transitions, 205 flow [2023-08-27 03:59:08,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states 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 03:59:08,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:08,469 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:08,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 03:59:08,469 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:59:08,470 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:08,470 INFO L85 PathProgramCache]: Analyzing trace with hash 2146318328, now seen corresponding path program 1 times [2023-08-27 03:59:08,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:08,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325504165] [2023-08-27 03:59:08,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:08,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:08,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:08,593 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 03:59:08,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:08,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325504165] [2023-08-27 03:59:08,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325504165] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:08,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:08,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 03:59:08,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646940236] [2023-08-27 03:59:08,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:08,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 03:59:08,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:08,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 03:59:08,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 03:59:08,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 181 [2023-08-27 03:59:08,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 32 transitions, 205 flow. Second operand has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 03:59:08,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:08,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 181 [2023-08-27 03:59:08,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:08,680 INFO L124 PetriNetUnfolderBase]: 150/309 cut-off events. [2023-08-27 03:59:08,680 INFO L125 PetriNetUnfolderBase]: For 733/733 co-relation queries the response was YES. [2023-08-27 03:59:08,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1229 conditions, 309 events. 150/309 cut-off events. For 733/733 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1263 event pairs, 27 based on Foata normal form. 22/318 useless extension candidates. Maximal degree in co-relation 1212. Up to 117 conditions per place. [2023-08-27 03:59:08,682 INFO L140 encePairwiseOnDemand]: 172/181 looper letters, 38 selfloop transitions, 17 changer transitions 0/58 dead transitions. [2023-08-27 03:59:08,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 58 transitions, 427 flow [2023-08-27 03:59:08,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 03:59:08,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 03:59:08,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 509 transitions. [2023-08-27 03:59:08,683 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4686924493554328 [2023-08-27 03:59:08,683 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 509 transitions. [2023-08-27 03:59:08,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 509 transitions. [2023-08-27 03:59:08,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:08,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 509 transitions. [2023-08-27 03:59:08,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:08,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states 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 03:59:08,687 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states 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 03:59:08,687 INFO L175 Difference]: Start difference. First operand has 42 places, 32 transitions, 205 flow. Second operand 6 states and 509 transitions. [2023-08-27 03:59:08,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 58 transitions, 427 flow [2023-08-27 03:59:08,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 58 transitions, 401 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-08-27 03:59:08,691 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 273 flow [2023-08-27 03:59:08,691 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=273, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2023-08-27 03:59:08,693 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2023-08-27 03:59:08,694 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 273 flow [2023-08-27 03:59:08,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.2) internal successors, (391), 5 states have internal predecessors, (391), 0 states have call successors, (0), 0 states 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 03:59:08,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:08,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:08,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 03:59:08,694 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:59:08,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:08,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1504145387, now seen corresponding path program 1 times [2023-08-27 03:59:08,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:08,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025920980] [2023-08-27 03:59:08,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:08,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:08,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:08,747 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 03:59:08,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:08,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025920980] [2023-08-27 03:59:08,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025920980] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:08,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:08,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 03:59:08,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178283345] [2023-08-27 03:59:08,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:08,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 03:59:08,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:08,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 03:59:08,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-27 03:59:08,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 181 [2023-08-27 03:59:08,750 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 273 flow. Second operand has 5 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 0 states have call successors, (0), 0 states 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 03:59:08,750 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:08,750 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 181 [2023-08-27 03:59:08,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:08,829 INFO L124 PetriNetUnfolderBase]: 138/276 cut-off events. [2023-08-27 03:59:08,830 INFO L125 PetriNetUnfolderBase]: For 960/960 co-relation queries the response was YES. [2023-08-27 03:59:08,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1087 conditions, 276 events. 138/276 cut-off events. For 960/960 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1042 event pairs, 27 based on Foata normal form. 21/287 useless extension candidates. Maximal degree in co-relation 1068. Up to 96 conditions per place. [2023-08-27 03:59:08,831 INFO L140 encePairwiseOnDemand]: 174/181 looper letters, 26 selfloop transitions, 10 changer transitions 4/43 dead transitions. [2023-08-27 03:59:08,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 43 transitions, 294 flow [2023-08-27 03:59:08,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 03:59:08,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 03:59:08,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2023-08-27 03:59:08,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47845303867403316 [2023-08-27 03:59:08,833 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2023-08-27 03:59:08,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2023-08-27 03:59:08,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:08,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2023-08-27 03:59:08,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states 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 03:59:08,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 03:59:08,836 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 03:59:08,836 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 273 flow. Second operand 5 states and 433 transitions. [2023-08-27 03:59:08,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 43 transitions, 294 flow [2023-08-27 03:59:08,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 43 transitions, 261 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-08-27 03:59:08,838 INFO L231 Difference]: Finished difference. Result has 40 places, 24 transitions, 139 flow [2023-08-27 03:59:08,838 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=139, PETRI_PLACES=40, PETRI_TRANSITIONS=24} [2023-08-27 03:59:08,840 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2023-08-27 03:59:08,841 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 24 transitions, 139 flow [2023-08-27 03:59:08,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 0 states have call successors, (0), 0 states 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 03:59:08,843 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:08,843 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:08,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 03:59:08,843 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:59:08,844 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:08,844 INFO L85 PathProgramCache]: Analyzing trace with hash -171908728, now seen corresponding path program 1 times [2023-08-27 03:59:08,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:08,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076601327] [2023-08-27 03:59:08,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:08,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:08,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:08,963 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 03:59:08,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:08,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076601327] [2023-08-27 03:59:08,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076601327] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:08,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:08,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 03:59:08,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205973109] [2023-08-27 03:59:08,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:08,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 03:59:08,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:08,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 03:59:08,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 03:59:08,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 181 [2023-08-27 03:59:08,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 24 transitions, 139 flow. Second operand has 6 states, 6 states have (on average 78.16666666666667) internal successors, (469), 6 states have internal predecessors, (469), 0 states have call successors, (0), 0 states 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 03:59:08,966 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:08,966 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 181 [2023-08-27 03:59:08,966 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:09,016 INFO L124 PetriNetUnfolderBase]: 61/131 cut-off events. [2023-08-27 03:59:09,017 INFO L125 PetriNetUnfolderBase]: For 389/389 co-relation queries the response was YES. [2023-08-27 03:59:09,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 500 conditions, 131 events. 61/131 cut-off events. For 389/389 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 385 event pairs, 15 based on Foata normal form. 7/135 useless extension candidates. Maximal degree in co-relation 484. Up to 48 conditions per place. [2023-08-27 03:59:09,018 INFO L140 encePairwiseOnDemand]: 175/181 looper letters, 22 selfloop transitions, 11 changer transitions 1/37 dead transitions. [2023-08-27 03:59:09,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 37 transitions, 243 flow [2023-08-27 03:59:09,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 03:59:09,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 03:59:09,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 492 transitions. [2023-08-27 03:59:09,019 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4530386740331492 [2023-08-27 03:59:09,019 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 492 transitions. [2023-08-27 03:59:09,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 492 transitions. [2023-08-27 03:59:09,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:09,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 492 transitions. [2023-08-27 03:59:09,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.0) internal successors, (492), 6 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:09,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states 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 03:59:09,022 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states 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 03:59:09,022 INFO L175 Difference]: Start difference. First operand has 40 places, 24 transitions, 139 flow. Second operand 6 states and 492 transitions. [2023-08-27 03:59:09,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 37 transitions, 243 flow [2023-08-27 03:59:09,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 37 transitions, 184 flow, removed 9 selfloop flow, removed 8 redundant places. [2023-08-27 03:59:09,023 INFO L231 Difference]: Finished difference. Result has 38 places, 24 transitions, 119 flow [2023-08-27 03:59:09,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=119, PETRI_PLACES=38, PETRI_TRANSITIONS=24} [2023-08-27 03:59:09,024 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-08-27 03:59:09,025 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 24 transitions, 119 flow [2023-08-27 03:59:09,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.16666666666667) internal successors, (469), 6 states have internal predecessors, (469), 0 states have call successors, (0), 0 states 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 03:59:09,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:09,025 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 03:59:09,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 03:59:09,025 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:59:09,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:09,025 INFO L85 PathProgramCache]: Analyzing trace with hash -2098727457, now seen corresponding path program 1 times [2023-08-27 03:59:09,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:09,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747555057] [2023-08-27 03:59:09,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:09,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:09,130 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 03:59:09,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:09,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747555057] [2023-08-27 03:59:09,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747555057] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:09,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:09,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 03:59:09,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637656345] [2023-08-27 03:59:09,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:09,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 03:59:09,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:09,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 03:59:09,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 03:59:09,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 181 [2023-08-27 03:59:09,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 24 transitions, 119 flow. Second operand has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 03:59:09,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:09,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 181 [2023-08-27 03:59:09,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:09,199 INFO L124 PetriNetUnfolderBase]: 157/291 cut-off events. [2023-08-27 03:59:09,199 INFO L125 PetriNetUnfolderBase]: For 217/217 co-relation queries the response was YES. [2023-08-27 03:59:09,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 964 conditions, 291 events. 157/291 cut-off events. For 217/217 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 980 event pairs, 60 based on Foata normal form. 1/292 useless extension candidates. Maximal degree in co-relation 950. Up to 125 conditions per place. [2023-08-27 03:59:09,201 INFO L140 encePairwiseOnDemand]: 175/181 looper letters, 37 selfloop transitions, 4 changer transitions 5/46 dead transitions. [2023-08-27 03:59:09,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 46 transitions, 340 flow [2023-08-27 03:59:09,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 03:59:09,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 03:59:09,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 393 transitions. [2023-08-27 03:59:09,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43425414364640885 [2023-08-27 03:59:09,202 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 393 transitions. [2023-08-27 03:59:09,202 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 393 transitions. [2023-08-27 03:59:09,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:09,203 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 393 transitions. [2023-08-27 03:59:09,203 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.6) internal successors, (393), 5 states have internal predecessors, (393), 0 states have call successors, (0), 0 states 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 03:59:09,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 03:59:09,204 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 03:59:09,204 INFO L175 Difference]: Start difference. First operand has 38 places, 24 transitions, 119 flow. Second operand 5 states and 393 transitions. [2023-08-27 03:59:09,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 46 transitions, 340 flow [2023-08-27 03:59:09,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 46 transitions, 242 flow, removed 6 selfloop flow, removed 9 redundant places. [2023-08-27 03:59:09,207 INFO L231 Difference]: Finished difference. Result has 36 places, 27 transitions, 106 flow [2023-08-27 03:59:09,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=106, PETRI_PLACES=36, PETRI_TRANSITIONS=27} [2023-08-27 03:59:09,208 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 1 predicate places. [2023-08-27 03:59:09,208 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 27 transitions, 106 flow [2023-08-27 03:59:09,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 03:59:09,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:09,209 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 03:59:09,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 03:59:09,209 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:59:09,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:09,209 INFO L85 PathProgramCache]: Analyzing trace with hash 542538767, now seen corresponding path program 2 times [2023-08-27 03:59:09,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:09,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290593629] [2023-08-27 03:59:09,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:09,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:09,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:09,318 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 03:59:09,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:09,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290593629] [2023-08-27 03:59:09,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290593629] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:09,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:09,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 03:59:09,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021966799] [2023-08-27 03:59:09,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:09,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 03:59:09,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:09,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 03:59:09,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 03:59:09,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 181 [2023-08-27 03:59:09,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 27 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 0 states have call successors, (0), 0 states 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 03:59:09,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:09,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 181 [2023-08-27 03:59:09,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:09,387 INFO L124 PetriNetUnfolderBase]: 117/262 cut-off events. [2023-08-27 03:59:09,387 INFO L125 PetriNetUnfolderBase]: For 114/118 co-relation queries the response was YES. [2023-08-27 03:59:09,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 765 conditions, 262 events. 117/262 cut-off events. For 114/118 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1159 event pairs, 13 based on Foata normal form. 1/257 useless extension candidates. Maximal degree in co-relation 756. Up to 124 conditions per place. [2023-08-27 03:59:09,388 INFO L140 encePairwiseOnDemand]: 177/181 looper letters, 27 selfloop transitions, 1 changer transitions 19/51 dead transitions. [2023-08-27 03:59:09,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 51 transitions, 293 flow [2023-08-27 03:59:09,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 03:59:09,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 03:59:09,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 412 transitions. [2023-08-27 03:59:09,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4552486187845304 [2023-08-27 03:59:09,389 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 412 transitions. [2023-08-27 03:59:09,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 412 transitions. [2023-08-27 03:59:09,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:09,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 412 transitions. [2023-08-27 03:59:09,391 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:59:09,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 03:59:09,392 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 03:59:09,392 INFO L175 Difference]: Start difference. First operand has 36 places, 27 transitions, 106 flow. Second operand 5 states and 412 transitions. [2023-08-27 03:59:09,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 51 transitions, 293 flow [2023-08-27 03:59:09,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 51 transitions, 289 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 03:59:09,394 INFO L231 Difference]: Finished difference. Result has 40 places, 27 transitions, 114 flow [2023-08-27 03:59:09,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=114, PETRI_PLACES=40, PETRI_TRANSITIONS=27} [2023-08-27 03:59:09,394 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2023-08-27 03:59:09,395 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 114 flow [2023-08-27 03:59:09,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.2) internal successors, (396), 5 states have internal predecessors, (396), 0 states have call successors, (0), 0 states 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 03:59:09,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:59:09,395 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 03:59:09,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 03:59:09,395 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:59:09,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:59:09,396 INFO L85 PathProgramCache]: Analyzing trace with hash -679410149, now seen corresponding path program 3 times [2023-08-27 03:59:09,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:59:09,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329306597] [2023-08-27 03:59:09,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:59:09,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:59:09,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:59:09,509 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 03:59:09,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:59:09,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329306597] [2023-08-27 03:59:09,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329306597] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:59:09,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:59:09,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 03:59:09,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978935073] [2023-08-27 03:59:09,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:59:09,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 03:59:09,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:59:09,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 03:59:09,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 03:59:09,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 181 [2023-08-27 03:59:09,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 03:59:09,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:59:09,514 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 181 [2023-08-27 03:59:09,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:59:09,589 INFO L124 PetriNetUnfolderBase]: 165/325 cut-off events. [2023-08-27 03:59:09,589 INFO L125 PetriNetUnfolderBase]: For 220/220 co-relation queries the response was YES. [2023-08-27 03:59:09,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 325 events. 165/325 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1322 event pairs, 25 based on Foata normal form. 1/326 useless extension candidates. Maximal degree in co-relation 1027. Up to 194 conditions per place. [2023-08-27 03:59:09,590 INFO L140 encePairwiseOnDemand]: 176/181 looper letters, 0 selfloop transitions, 0 changer transitions 51/51 dead transitions. [2023-08-27 03:59:09,591 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 314 flow [2023-08-27 03:59:09,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 03:59:09,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 03:59:09,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 394 transitions. [2023-08-27 03:59:09,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4353591160220994 [2023-08-27 03:59:09,592 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 394 transitions. [2023-08-27 03:59:09,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 394 transitions. [2023-08-27 03:59:09,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:59:09,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 394 transitions. [2023-08-27 03:59:09,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.8) internal successors, (394), 5 states have internal predecessors, (394), 0 states have call successors, (0), 0 states 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 03:59:09,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 03:59:09,595 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 181.0) internal successors, (1086), 6 states have internal predecessors, (1086), 0 states have call successors, (0), 0 states 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 03:59:09,595 INFO L175 Difference]: Start difference. First operand has 40 places, 27 transitions, 114 flow. Second operand 5 states and 394 transitions. [2023-08-27 03:59:09,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 314 flow [2023-08-27 03:59:09,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 51 transitions, 310 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 03:59:09,598 INFO L231 Difference]: Finished difference. Result has 39 places, 0 transitions, 0 flow [2023-08-27 03:59:09,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=181, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=39, PETRI_TRANSITIONS=0} [2023-08-27 03:59:09,599 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 4 predicate places. [2023-08-27 03:59:09,599 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 0 transitions, 0 flow [2023-08-27 03:59:09,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.6) internal successors, (378), 5 states have internal predecessors, (378), 0 states have call successors, (0), 0 states 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 03:59:09,604 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-27 03:59:09,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-27 03:59:09,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-27 03:59:09,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-27 03:59:09,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-27 03:59:09,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-27 03:59:09,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (9 of 16 remaining) [2023-08-27 03:59:09,605 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2023-08-27 03:59:09,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 16 remaining) [2023-08-27 03:59:09,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 16 remaining) [2023-08-27 03:59:09,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-27 03:59:09,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-27 03:59:09,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-27 03:59:09,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-27 03:59:09,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-27 03:59:09,606 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-27 03:59:09,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 03:59:09,607 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:59:09,612 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 03:59:09,612 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 03:59:09,629 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 03:59:09 BasicIcfg [2023-08-27 03:59:09,629 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 03:59:09,630 INFO L158 Benchmark]: Toolchain (without parser) took 4928.49ms. Allocated memory was 404.8MB in the beginning and 580.9MB in the end (delta: 176.2MB). Free memory was 380.7MB in the beginning and 344.0MB in the end (delta: 36.6MB). Peak memory consumption was 214.6MB. Max. memory is 16.0GB. [2023-08-27 03:59:09,630 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 404.8MB. Free memory is still 381.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 03:59:09,630 INFO L158 Benchmark]: CACSL2BoogieTranslator took 405.19ms. Allocated memory is still 404.8MB. Free memory was 380.7MB in the beginning and 360.3MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-27 03:59:09,630 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.31ms. Allocated memory is still 404.8MB. Free memory was 360.3MB in the beginning and 358.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 03:59:09,630 INFO L158 Benchmark]: Boogie Preprocessor took 17.30ms. Allocated memory is still 404.8MB. Free memory was 358.2MB in the beginning and 356.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 03:59:09,631 INFO L158 Benchmark]: RCFGBuilder took 278.87ms. Allocated memory is still 404.8MB. Free memory was 356.9MB in the beginning and 341.4MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-27 03:59:09,631 INFO L158 Benchmark]: TraceAbstraction took 4179.19ms. Allocated memory was 404.8MB in the beginning and 580.9MB in the end (delta: 176.2MB). Free memory was 340.6MB in the beginning and 344.0MB in the end (delta: -3.5MB). Peak memory consumption was 174.8MB. Max. memory is 16.0GB. [2023-08-27 03:59:09,632 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 404.8MB. Free memory is still 381.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 405.19ms. Allocated memory is still 404.8MB. Free memory was 380.7MB in the beginning and 360.3MB in the end (delta: 20.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.31ms. Allocated memory is still 404.8MB. Free memory was 360.3MB in the beginning and 358.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 17.30ms. Allocated memory is still 404.8MB. Free memory was 358.2MB in the beginning and 356.9MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 278.87ms. Allocated memory is still 404.8MB. Free memory was 356.9MB in the beginning and 341.4MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 4179.19ms. Allocated memory was 404.8MB in the beginning and 580.9MB in the end (delta: 176.2MB). Free memory was 340.6MB in the beginning and 344.0MB in the end (delta: -3.5MB). Peak memory consumption was 174.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 100 PlacesBefore, 35 PlacesAfterwards, 93 TransitionsBefore, 26 TransitionsAfterwards, 2256 CoEnabledTransitionPairs, 7 FixpointIterations, 21 TrivialSequentialCompositions, 46 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 2 ChoiceCompositions, 85 TotalNumberOfCompositions, 7051 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3241, independent: 3040, independent conditional: 0, independent unconditional: 3040, dependent: 201, dependent conditional: 0, dependent unconditional: 201, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1264, independent: 1236, independent conditional: 0, independent unconditional: 1236, dependent: 28, dependent conditional: 0, dependent unconditional: 28, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3241, independent: 1804, independent conditional: 0, independent unconditional: 1804, dependent: 173, dependent conditional: 0, dependent unconditional: 173, unknown: 1264, unknown conditional: 0, unknown unconditional: 1264] , Statistics on independence cache: Total cache size (in pairs): 116, Positive cache size: 103, Positive conditional cache size: 0, Positive unconditional cache size: 103, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 737]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 737]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 754]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 754]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 771]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 771]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 124 locations, 16 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: 4.0s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 227 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 227 mSDsluCounter, 35 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 49 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 646 IncrementalHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 49 mSolverCounterUnsat, 18 mSDtfsCounter, 646 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=296occurred in iteration=2, InterpolantAutomatonStates: 48, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 120 ConstructedInterpolants, 0 QuantifiedInterpolants, 438 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 03:59:09,657 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...