/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 10:16:34,018 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 10:16:34,078 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 10:16:34,086 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 10:16:34,087 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 10:16:34,126 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 10:16:34,127 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 10:16:34,127 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 10:16:34,128 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 10:16:34,132 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 10:16:34,132 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 10:16:34,132 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 10:16:34,132 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 10:16:34,134 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 10:16:34,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 10:16:34,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 10:16:34,134 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 10:16:34,134 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 10:16:34,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 10:16:34,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 10:16:34,135 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 10:16:34,136 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 10:16:34,136 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 10:16:34,137 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 10:16:34,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 10:16:34,137 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 10:16:34,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 10:16:34,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 10:16:34,138 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 10:16:34,138 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 10:16:34,139 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 10:16:34,139 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 10:16:34,139 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 10:16:34,139 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 10:16:34,139 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 10:16:34,140 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 10:16:34,464 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 10:16:34,490 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 10:16:34,492 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 10:16:34,493 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 10:16:34,493 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 10:16:34,495 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.i [2023-08-27 10:16:35,785 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 10:16:36,051 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 10:16:36,052 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.i [2023-08-27 10:16:36,069 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1bf49754/46fd648fbe7a4ed19bfacccd0b8b3428/FLAG9b74591a3 [2023-08-27 10:16:36,081 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1bf49754/46fd648fbe7a4ed19bfacccd0b8b3428 [2023-08-27 10:16:36,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 10:16:36,084 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 10:16:36,085 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 10:16:36,085 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 10:16:36,087 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 10:16:36,088 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:16:36" (1/1) ... [2023-08-27 10:16:36,089 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30c1497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:36, skipping insertion in model container [2023-08-27 10:16:36,089 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 10:16:36" (1/1) ... [2023-08-27 10:16:36,134 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 10:16:36,451 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 10:16:36,461 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 10:16:36,490 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 10:16:36,491 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 10:16:36,520 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 10:16:36,552 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 10:16:36,553 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 10:16:36,558 INFO L206 MainTranslator]: Completed translation [2023-08-27 10:16:36,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:36 WrapperNode [2023-08-27 10:16:36,559 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 10:16:36,560 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 10:16:36,560 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 10:16:36,560 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 10:16:36,566 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:36" (1/1) ... [2023-08-27 10:16:36,598 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:36" (1/1) ... [2023-08-27 10:16:36,614 INFO L138 Inliner]: procedures = 176, calls = 52, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 72 [2023-08-27 10:16:36,614 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 10:16:36,615 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 10:16:36,615 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 10:16:36,615 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 10:16:36,622 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:36" (1/1) ... [2023-08-27 10:16:36,623 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:36" (1/1) ... [2023-08-27 10:16:36,625 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:36" (1/1) ... [2023-08-27 10:16:36,625 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:36" (1/1) ... [2023-08-27 10:16:36,630 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:36" (1/1) ... [2023-08-27 10:16:36,631 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:36" (1/1) ... [2023-08-27 10:16:36,644 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:36" (1/1) ... [2023-08-27 10:16:36,645 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:36" (1/1) ... [2023-08-27 10:16:36,647 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 10:16:36,648 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 10:16:36,648 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 10:16:36,648 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 10:16:36,649 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:36" (1/1) ... [2023-08-27 10:16:36,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 10:16:36,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 10:16:36,694 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 10:16:36,705 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 10:16:36,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 10:16:36,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 10:16:36,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 10:16:36,729 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 10:16:36,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 10:16:36,729 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-27 10:16:36,729 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-27 10:16:36,729 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-27 10:16:36,729 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-27 10:16:36,729 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-27 10:16:36,730 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-27 10:16:36,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 10:16:36,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 10:16:36,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 10:16:36,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 10:16:36,731 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 10:16:36,869 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 10:16:36,871 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 10:16:37,120 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 10:16:37,144 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 10:16:37,144 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 10:16:37,146 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:16:37 BoogieIcfgContainer [2023-08-27 10:16:37,147 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 10:16:37,149 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 10:16:37,149 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 10:16:37,151 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 10:16:37,152 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 10:16:36" (1/3) ... [2023-08-27 10:16:37,152 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d32fcfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:16:37, skipping insertion in model container [2023-08-27 10:16:37,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 10:16:36" (2/3) ... [2023-08-27 10:16:37,153 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d32fcfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 10:16:37, skipping insertion in model container [2023-08-27 10:16:37,153 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 10:16:37" (3/3) ... [2023-08-27 10:16:37,154 INFO L112 eAbstractionObserver]: Analyzing ICFG safe017_tso.i [2023-08-27 10:16:37,169 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 10:16:37,170 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-27 10:16:37,170 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 10:16:37,236 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 10:16:37,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 92 transitions, 199 flow [2023-08-27 10:16:37,335 INFO L124 PetriNetUnfolderBase]: 3/89 cut-off events. [2023-08-27 10:16:37,335 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:16:37,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 3/89 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. 0/79 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-08-27 10:16:37,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 92 transitions, 199 flow [2023-08-27 10:16:37,343 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 89 transitions, 187 flow [2023-08-27 10:16:37,346 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 10:16:37,354 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 89 transitions, 187 flow [2023-08-27 10:16:37,356 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 89 transitions, 187 flow [2023-08-27 10:16:37,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 89 transitions, 187 flow [2023-08-27 10:16:37,374 INFO L124 PetriNetUnfolderBase]: 3/89 cut-off events. [2023-08-27 10:16:37,374 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:16:37,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 3/89 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. 0/79 useless extension candidates. Maximal degree in co-relation 73. Up to 2 conditions per place. [2023-08-27 10:16:37,377 INFO L119 LiptonReduction]: Number of co-enabled transitions 2146 [2023-08-27 10:16:39,612 INFO L134 LiptonReduction]: Checked pairs total: 6806 [2023-08-27 10:16:39,612 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-27 10:16:39,624 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 10:16:39,630 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;@55054876, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 10:16:39,630 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-27 10:16:39,633 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 10:16:39,633 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-27 10:16:39,634 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 10:16:39,634 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:16:39,634 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 10:16:39,635 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 10:16:39,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:16:39,639 INFO L85 PathProgramCache]: Analyzing trace with hash 328589951, now seen corresponding path program 1 times [2023-08-27 10:16:39,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:16:39,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774085102] [2023-08-27 10:16:39,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:16:39,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:16:39,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:16:39,873 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 10:16:39,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:16:39,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774085102] [2023-08-27 10:16:39,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774085102] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:16:39,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:16:39,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:16:39,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836511651] [2023-08-27 10:16:39,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:16:39,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:16:39,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:16:39,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:16:39,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:16:39,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 179 [2023-08-27 10:16:39,915 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 24 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states 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 10:16:39,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:16:39,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 179 [2023-08-27 10:16:39,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:16:40,089 INFO L124 PetriNetUnfolderBase]: 496/811 cut-off events. [2023-08-27 10:16:40,090 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-27 10:16:40,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1655 conditions, 811 events. 496/811 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 3779 event pairs, 127 based on Foata normal form. 0/513 useless extension candidates. Maximal degree in co-relation 1644. Up to 710 conditions per place. [2023-08-27 10:16:40,097 INFO L140 encePairwiseOnDemand]: 168/179 looper letters, 30 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2023-08-27 10:16:40,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 36 transitions, 155 flow [2023-08-27 10:16:40,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:16:40,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:16:40,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 264 transitions. [2023-08-27 10:16:40,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49162011173184356 [2023-08-27 10:16:40,122 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 264 transitions. [2023-08-27 10:16:40,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 264 transitions. [2023-08-27 10:16:40,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:16:40,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 264 transitions. [2023-08-27 10:16:40,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 0 states have call successors, (0), 0 states 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 10:16:40,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states 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 10:16:40,135 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states 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 10:16:40,136 INFO L175 Difference]: Start difference. First operand has 33 places, 24 transitions, 57 flow. Second operand 3 states and 264 transitions. [2023-08-27 10:16:40,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 36 transitions, 155 flow [2023-08-27 10:16:40,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 150 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 10:16:40,139 INFO L231 Difference]: Finished difference. Result has 33 places, 26 transitions, 88 flow [2023-08-27 10:16:40,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=33, PETRI_TRANSITIONS=26} [2023-08-27 10:16:40,143 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 0 predicate places. [2023-08-27 10:16:40,143 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 26 transitions, 88 flow [2023-08-27 10:16:40,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.33333333333333) internal successors, (226), 3 states have internal predecessors, (226), 0 states have call successors, (0), 0 states 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 10:16:40,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:16:40,144 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:16:40,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 10:16:40,144 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 10:16:40,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:16:40,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1819806395, now seen corresponding path program 1 times [2023-08-27 10:16:40,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:16:40,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328044621] [2023-08-27 10:16:40,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:16:40,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:16:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:16:40,384 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 10:16:40,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:16:40,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328044621] [2023-08-27 10:16:40,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328044621] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:16:40,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:16:40,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:16:40,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953734227] [2023-08-27 10:16:40,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:16:40,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:16:40,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:16:40,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:16:40,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:16:40,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 179 [2023-08-27 10:16:40,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 10:16:40,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:16:40,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 179 [2023-08-27 10:16:40,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:16:40,559 INFO L124 PetriNetUnfolderBase]: 956/1649 cut-off events. [2023-08-27 10:16:40,559 INFO L125 PetriNetUnfolderBase]: For 226/265 co-relation queries the response was YES. [2023-08-27 10:16:40,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4161 conditions, 1649 events. 956/1649 cut-off events. For 226/265 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 9336 event pairs, 346 based on Foata normal form. 4/1316 useless extension candidates. Maximal degree in co-relation 4150. Up to 813 conditions per place. [2023-08-27 10:16:40,572 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 36 selfloop transitions, 7 changer transitions 0/46 dead transitions. [2023-08-27 10:16:40,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 46 transitions, 239 flow [2023-08-27 10:16:40,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:16:40,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:16:40,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2023-08-27 10:16:40,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4618249534450652 [2023-08-27 10:16:40,575 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2023-08-27 10:16:40,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2023-08-27 10:16:40,575 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:16:40,575 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2023-08-27 10:16:40,576 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 0 states have call successors, (0), 0 states 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 10:16:40,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states 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 10:16:40,578 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states 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 10:16:40,578 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 88 flow. Second operand 3 states and 248 transitions. [2023-08-27 10:16:40,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 46 transitions, 239 flow [2023-08-27 10:16:40,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 46 transitions, 232 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:16:40,582 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 138 flow [2023-08-27 10:16:40,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2023-08-27 10:16:40,583 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-08-27 10:16:40,583 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 138 flow [2023-08-27 10:16:40,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states 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 10:16:40,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:16:40,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:16:40,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 10:16:40,584 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 10:16:40,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:16:40,584 INFO L85 PathProgramCache]: Analyzing trace with hash 1413289020, now seen corresponding path program 1 times [2023-08-27 10:16:40,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:16:40,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833416542] [2023-08-27 10:16:40,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:16:40,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:16:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:16:40,624 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 10:16:40,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:16:40,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833416542] [2023-08-27 10:16:40,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833416542] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:16:40,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:16:40,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:16:40,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224697607] [2023-08-27 10:16:40,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:16:40,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:16:40,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:16:40,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:16:40,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:16:40,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 179 [2023-08-27 10:16:40,628 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 10:16:40,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:16:40,628 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 179 [2023-08-27 10:16:40,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:16:40,781 INFO L124 PetriNetUnfolderBase]: 708/1200 cut-off events. [2023-08-27 10:16:40,781 INFO L125 PetriNetUnfolderBase]: For 826/875 co-relation queries the response was YES. [2023-08-27 10:16:40,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3701 conditions, 1200 events. 708/1200 cut-off events. For 826/875 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6402 event pairs, 127 based on Foata normal form. 29/1016 useless extension candidates. Maximal degree in co-relation 3687. Up to 941 conditions per place. [2023-08-27 10:16:40,790 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 35 selfloop transitions, 4 changer transitions 0/43 dead transitions. [2023-08-27 10:16:40,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 43 transitions, 262 flow [2023-08-27 10:16:40,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:16:40,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:16:40,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 330 transitions. [2023-08-27 10:16:40,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46089385474860334 [2023-08-27 10:16:40,792 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 330 transitions. [2023-08-27 10:16:40,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 330 transitions. [2023-08-27 10:16:40,792 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:16:40,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 330 transitions. [2023-08-27 10:16:40,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states 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 10:16:40,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 10:16:40,795 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 10:16:40,795 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 138 flow. Second operand 4 states and 330 transitions. [2023-08-27 10:16:40,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 43 transitions, 262 flow [2023-08-27 10:16:40,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 43 transitions, 240 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:16:40,798 INFO L231 Difference]: Finished difference. Result has 34 places, 29 transitions, 120 flow [2023-08-27 10:16:40,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=34, PETRI_TRANSITIONS=29} [2023-08-27 10:16:40,799 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2023-08-27 10:16:40,799 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 29 transitions, 120 flow [2023-08-27 10:16:40,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 10:16:40,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:16:40,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:16:40,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 10:16:40,800 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 10:16:40,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:16:40,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1413256471, now seen corresponding path program 1 times [2023-08-27 10:16:40,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:16:40,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795508140] [2023-08-27 10:16:40,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:16:40,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:16:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:16:40,837 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 10:16:40,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:16:40,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795508140] [2023-08-27 10:16:40,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795508140] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:16:40,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:16:40,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:16:40,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816196844] [2023-08-27 10:16:40,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:16:40,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:16:40,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:16:40,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:16:40,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:16:40,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 179 [2023-08-27 10:16:40,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 29 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 10:16:40,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:16:40,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 179 [2023-08-27 10:16:40,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:16:40,950 INFO L124 PetriNetUnfolderBase]: 492/838 cut-off events. [2023-08-27 10:16:40,951 INFO L125 PetriNetUnfolderBase]: For 609/658 co-relation queries the response was YES. [2023-08-27 10:16:40,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2519 conditions, 838 events. 492/838 cut-off events. For 609/658 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4135 event pairs, 68 based on Foata normal form. 29/789 useless extension candidates. Maximal degree in co-relation 2505. Up to 322 conditions per place. [2023-08-27 10:16:40,957 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 46 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2023-08-27 10:16:40,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 57 transitions, 328 flow [2023-08-27 10:16:40,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:16:40,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:16:40,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 341 transitions. [2023-08-27 10:16:40,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4762569832402235 [2023-08-27 10:16:40,959 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 341 transitions. [2023-08-27 10:16:40,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 341 transitions. [2023-08-27 10:16:40,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:16:40,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 341 transitions. [2023-08-27 10:16:40,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.25) internal successors, (341), 4 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 10:16:40,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 10:16:40,962 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 10:16:40,962 INFO L175 Difference]: Start difference. First operand has 34 places, 29 transitions, 120 flow. Second operand 4 states and 341 transitions. [2023-08-27 10:16:40,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 57 transitions, 328 flow [2023-08-27 10:16:40,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 57 transitions, 323 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:16:40,964 INFO L231 Difference]: Finished difference. Result has 36 places, 32 transitions, 159 flow [2023-08-27 10:16:40,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=115, PETRI_DIFFERENCE_MINUEND_PLACES=32, 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=159, PETRI_PLACES=36, PETRI_TRANSITIONS=32} [2023-08-27 10:16:40,965 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-08-27 10:16:40,965 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 32 transitions, 159 flow [2023-08-27 10:16:40,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 10:16:40,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:16:40,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:16:40,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 10:16:40,966 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 10:16:40,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:16:40,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1437344434, now seen corresponding path program 1 times [2023-08-27 10:16:40,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:16:40,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355474455] [2023-08-27 10:16:40,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:16:40,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:16:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:16:41,130 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 10:16:41,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:16:41,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355474455] [2023-08-27 10:16:41,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355474455] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:16:41,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:16:41,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:16:41,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354874731] [2023-08-27 10:16:41,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:16:41,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:16:41,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:16:41,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:16:41,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:16:41,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 179 [2023-08-27 10:16:41,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 32 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states 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 10:16:41,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:16:41,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 179 [2023-08-27 10:16:41,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:16:41,281 INFO L124 PetriNetUnfolderBase]: 573/939 cut-off events. [2023-08-27 10:16:41,281 INFO L125 PetriNetUnfolderBase]: For 1059/1059 co-relation queries the response was YES. [2023-08-27 10:16:41,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3350 conditions, 939 events. 573/939 cut-off events. For 1059/1059 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4232 event pairs, 52 based on Foata normal form. 0/878 useless extension candidates. Maximal degree in co-relation 3335. Up to 438 conditions per place. [2023-08-27 10:16:41,288 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 54 selfloop transitions, 11 changer transitions 0/65 dead transitions. [2023-08-27 10:16:41,288 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 65 transitions, 448 flow [2023-08-27 10:16:41,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:16:41,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:16:41,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 328 transitions. [2023-08-27 10:16:41,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4581005586592179 [2023-08-27 10:16:41,290 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 328 transitions. [2023-08-27 10:16:41,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 328 transitions. [2023-08-27 10:16:41,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:16:41,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 328 transitions. [2023-08-27 10:16:41,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.0) internal successors, (328), 4 states have internal predecessors, (328), 0 states have call successors, (0), 0 states 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 10:16:41,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 10:16:41,294 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 10:16:41,294 INFO L175 Difference]: Start difference. First operand has 36 places, 32 transitions, 159 flow. Second operand 4 states and 328 transitions. [2023-08-27 10:16:41,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 65 transitions, 448 flow [2023-08-27 10:16:41,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 65 transitions, 421 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-27 10:16:41,298 INFO L231 Difference]: Finished difference. Result has 40 places, 40 transitions, 235 flow [2023-08-27 10:16:41,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=40, PETRI_TRANSITIONS=40} [2023-08-27 10:16:41,301 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2023-08-27 10:16:41,301 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 40 transitions, 235 flow [2023-08-27 10:16:41,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states 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 10:16:41,302 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:16:41,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:16:41,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 10:16:41,302 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:16:41,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:16:41,302 INFO L85 PathProgramCache]: Analyzing trace with hash 579421728, now seen corresponding path program 1 times [2023-08-27 10:16:41,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:16:41,303 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357114914] [2023-08-27 10:16:41,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:16:41,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:16:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:16:41,445 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 10:16:41,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:16:41,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357114914] [2023-08-27 10:16:41,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357114914] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:16:41,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:16:41,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:16:41,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579747838] [2023-08-27 10:16:41,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:16:41,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:16:41,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:16:41,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:16:41,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:16:41,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 179 [2023-08-27 10:16:41,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states 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 10:16:41,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:16:41,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 179 [2023-08-27 10:16:41,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:16:41,601 INFO L124 PetriNetUnfolderBase]: 551/905 cut-off events. [2023-08-27 10:16:41,601 INFO L125 PetriNetUnfolderBase]: For 1308/1308 co-relation queries the response was YES. [2023-08-27 10:16:41,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3561 conditions, 905 events. 551/905 cut-off events. For 1308/1308 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3863 event pairs, 82 based on Foata normal form. 8/889 useless extension candidates. Maximal degree in co-relation 3543. Up to 366 conditions per place. [2023-08-27 10:16:41,608 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 57 selfloop transitions, 14 changer transitions 0/71 dead transitions. [2023-08-27 10:16:41,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 71 transitions, 562 flow [2023-08-27 10:16:41,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:16:41,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:16:41,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 320 transitions. [2023-08-27 10:16:41,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44692737430167595 [2023-08-27 10:16:41,610 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 320 transitions. [2023-08-27 10:16:41,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 320 transitions. [2023-08-27 10:16:41,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:16:41,611 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 320 transitions. [2023-08-27 10:16:41,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 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 10:16:41,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 10:16:41,614 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 10:16:41,614 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 235 flow. Second operand 4 states and 320 transitions. [2023-08-27 10:16:41,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 71 transitions, 562 flow [2023-08-27 10:16:41,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 71 transitions, 562 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 10:16:41,619 INFO L231 Difference]: Finished difference. Result has 46 places, 48 transitions, 369 flow [2023-08-27 10:16:41,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=235, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=369, PETRI_PLACES=46, PETRI_TRANSITIONS=48} [2023-08-27 10:16:41,621 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2023-08-27 10:16:41,624 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 48 transitions, 369 flow [2023-08-27 10:16:41,625 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 0 states have call successors, (0), 0 states 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 10:16:41,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:16:41,625 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:16:41,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 10:16:41,625 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 10:16:41,626 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:16:41,626 INFO L85 PathProgramCache]: Analyzing trace with hash 793331684, now seen corresponding path program 1 times [2023-08-27 10:16:41,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:16:41,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870865877] [2023-08-27 10:16:41,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:16:41,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:16:41,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:16:41,717 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 10:16:41,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:16:41,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870865877] [2023-08-27 10:16:41,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870865877] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:16:41,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:16:41,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 10:16:41,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551850916] [2023-08-27 10:16:41,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:16:41,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 10:16:41,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:16:41,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 10:16:41,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 10:16:41,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 179 [2023-08-27 10:16:41,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 48 transitions, 369 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 10:16:41,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:16:41,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 179 [2023-08-27 10:16:41,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:16:41,817 INFO L124 PetriNetUnfolderBase]: 499/843 cut-off events. [2023-08-27 10:16:41,817 INFO L125 PetriNetUnfolderBase]: For 2127/2143 co-relation queries the response was YES. [2023-08-27 10:16:41,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3749 conditions, 843 events. 499/843 cut-off events. For 2127/2143 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3730 event pairs, 109 based on Foata normal form. 6/822 useless extension candidates. Maximal degree in co-relation 3726. Up to 740 conditions per place. [2023-08-27 10:16:41,825 INFO L140 encePairwiseOnDemand]: 175/179 looper letters, 55 selfloop transitions, 9 changer transitions 0/70 dead transitions. [2023-08-27 10:16:41,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 70 transitions, 666 flow [2023-08-27 10:16:41,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 10:16:41,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 10:16:41,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 256 transitions. [2023-08-27 10:16:41,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4767225325884544 [2023-08-27 10:16:41,826 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 256 transitions. [2023-08-27 10:16:41,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 256 transitions. [2023-08-27 10:16:41,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:16:41,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 256 transitions. [2023-08-27 10:16:41,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.33333333333333) internal successors, (256), 3 states have internal predecessors, (256), 0 states have call successors, (0), 0 states 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 10:16:41,828 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states 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 10:16:41,829 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states 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 10:16:41,829 INFO L175 Difference]: Start difference. First operand has 46 places, 48 transitions, 369 flow. Second operand 3 states and 256 transitions. [2023-08-27 10:16:41,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 70 transitions, 666 flow [2023-08-27 10:16:41,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 70 transitions, 659 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:16:41,835 INFO L231 Difference]: Finished difference. Result has 48 places, 54 transitions, 458 flow [2023-08-27 10:16:41,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=458, PETRI_PLACES=48, PETRI_TRANSITIONS=54} [2023-08-27 10:16:41,835 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 15 predicate places. [2023-08-27 10:16:41,836 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 54 transitions, 458 flow [2023-08-27 10:16:41,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states 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 10:16:41,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:16:41,836 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:16:41,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 10:16:41,836 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 10:16:41,837 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:16:41,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1521082475, now seen corresponding path program 1 times [2023-08-27 10:16:41,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:16:41,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089982481] [2023-08-27 10:16:41,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:16:41,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:16:41,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:16:41,914 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 10:16:41,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:16:41,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089982481] [2023-08-27 10:16:41,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089982481] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:16:41,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:16:41,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:16:41,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100483340] [2023-08-27 10:16:41,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:16:41,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:16:41,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:16:41,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:16:41,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:16:41,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 179 [2023-08-27 10:16:41,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 54 transitions, 458 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states 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 10:16:41,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:16:41,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 179 [2023-08-27 10:16:41,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:16:42,063 INFO L124 PetriNetUnfolderBase]: 599/1005 cut-off events. [2023-08-27 10:16:42,064 INFO L125 PetriNetUnfolderBase]: For 2736/2736 co-relation queries the response was YES. [2023-08-27 10:16:42,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4682 conditions, 1005 events. 599/1005 cut-off events. For 2736/2736 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4632 event pairs, 89 based on Foata normal form. 6/975 useless extension candidates. Maximal degree in co-relation 4657. Up to 409 conditions per place. [2023-08-27 10:16:42,072 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 65 selfloop transitions, 28 changer transitions 0/93 dead transitions. [2023-08-27 10:16:42,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 93 transitions, 857 flow [2023-08-27 10:16:42,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:16:42,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:16:42,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 333 transitions. [2023-08-27 10:16:42,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4650837988826816 [2023-08-27 10:16:42,074 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 333 transitions. [2023-08-27 10:16:42,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 333 transitions. [2023-08-27 10:16:42,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:16:42,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 333 transitions. [2023-08-27 10:16:42,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states 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 10:16:42,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 10:16:42,077 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 10:16:42,077 INFO L175 Difference]: Start difference. First operand has 48 places, 54 transitions, 458 flow. Second operand 4 states and 333 transitions. [2023-08-27 10:16:42,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 93 transitions, 857 flow [2023-08-27 10:16:42,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 93 transitions, 848 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 10:16:42,084 INFO L231 Difference]: Finished difference. Result has 53 places, 57 transitions, 606 flow [2023-08-27 10:16:42,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=606, PETRI_PLACES=53, PETRI_TRANSITIONS=57} [2023-08-27 10:16:42,085 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2023-08-27 10:16:42,085 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 57 transitions, 606 flow [2023-08-27 10:16:42,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 states 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 10:16:42,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:16:42,085 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:16:42,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 10:16:42,086 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 10:16:42,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:16:42,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1521044035, now seen corresponding path program 1 times [2023-08-27 10:16:42,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:16:42,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455202408] [2023-08-27 10:16:42,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:16:42,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:16:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:16:42,167 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 10:16:42,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:16:42,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455202408] [2023-08-27 10:16:42,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455202408] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:16:42,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:16:42,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:16:42,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914898774] [2023-08-27 10:16:42,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:16:42,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:16:42,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:16:42,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:16:42,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:16:42,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-27 10:16:42,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 57 transitions, 606 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states 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 10:16:42,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:16:42,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-27 10:16:42,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:16:42,300 INFO L124 PetriNetUnfolderBase]: 395/767 cut-off events. [2023-08-27 10:16:42,300 INFO L125 PetriNetUnfolderBase]: For 5397/5590 co-relation queries the response was YES. [2023-08-27 10:16:42,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3665 conditions, 767 events. 395/767 cut-off events. For 5397/5590 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4221 event pairs, 74 based on Foata normal form. 243/960 useless extension candidates. Maximal degree in co-relation 3636. Up to 507 conditions per place. [2023-08-27 10:16:42,307 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 84 selfloop transitions, 8 changer transitions 3/108 dead transitions. [2023-08-27 10:16:42,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 108 transitions, 1282 flow [2023-08-27 10:16:42,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:16:42,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:16:42,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 408 transitions. [2023-08-27 10:16:42,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4558659217877095 [2023-08-27 10:16:42,309 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 408 transitions. [2023-08-27 10:16:42,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 408 transitions. [2023-08-27 10:16:42,309 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:16:42,309 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 408 transitions. [2023-08-27 10:16:42,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 81.6) internal successors, (408), 5 states have internal predecessors, (408), 0 states have call successors, (0), 0 states 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 10:16:42,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states 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 10:16:42,312 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states 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 10:16:42,312 INFO L175 Difference]: Start difference. First operand has 53 places, 57 transitions, 606 flow. Second operand 5 states and 408 transitions. [2023-08-27 10:16:42,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 108 transitions, 1282 flow [2023-08-27 10:16:42,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 108 transitions, 1274 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-27 10:16:42,320 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 653 flow [2023-08-27 10:16:42,320 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=653, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2023-08-27 10:16:42,320 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2023-08-27 10:16:42,321 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 653 flow [2023-08-27 10:16:42,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states 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 10:16:42,321 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:16:42,321 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:16:42,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 10:16:42,321 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 10:16:42,322 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:16:42,322 INFO L85 PathProgramCache]: Analyzing trace with hash -553419945, now seen corresponding path program 1 times [2023-08-27 10:16:42,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:16:42,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689389194] [2023-08-27 10:16:42,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:16:42,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:16:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:16:42,445 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 10:16:42,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:16:42,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689389194] [2023-08-27 10:16:42,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689389194] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:16:42,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:16:42,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:16:42,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599725293] [2023-08-27 10:16:42,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:16:42,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:16:42,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:16:42,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:16:42,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:16:42,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-27 10:16:42,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 653 flow. Second operand has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states 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 10:16:42,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:16:42,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-27 10:16:42,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:16:42,617 INFO L124 PetriNetUnfolderBase]: 287/614 cut-off events. [2023-08-27 10:16:42,617 INFO L125 PetriNetUnfolderBase]: For 5527/5708 co-relation queries the response was YES. [2023-08-27 10:16:42,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3181 conditions, 614 events. 287/614 cut-off events. For 5527/5708 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3510 event pairs, 35 based on Foata normal form. 216/778 useless extension candidates. Maximal degree in co-relation 3147. Up to 207 conditions per place. [2023-08-27 10:16:42,623 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 87 selfloop transitions, 15 changer transitions 3/117 dead transitions. [2023-08-27 10:16:42,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 117 transitions, 1420 flow [2023-08-27 10:16:42,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 10:16:42,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 10:16:42,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 567 transitions. [2023-08-27 10:16:42,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45251396648044695 [2023-08-27 10:16:42,626 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 567 transitions. [2023-08-27 10:16:42,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 567 transitions. [2023-08-27 10:16:42,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:16:42,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 567 transitions. [2023-08-27 10:16:42,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.0) internal successors, (567), 7 states have internal predecessors, (567), 0 states have call successors, (0), 0 states 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 10:16:42,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states 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 10:16:42,630 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states 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 10:16:42,630 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 653 flow. Second operand 7 states and 567 transitions. [2023-08-27 10:16:42,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 117 transitions, 1420 flow [2023-08-27 10:16:42,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 117 transitions, 1409 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:16:42,640 INFO L231 Difference]: Finished difference. Result has 67 places, 59 transitions, 669 flow [2023-08-27 10:16:42,640 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=669, PETRI_PLACES=67, PETRI_TRANSITIONS=59} [2023-08-27 10:16:42,641 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 34 predicate places. [2023-08-27 10:16:42,641 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 59 transitions, 669 flow [2023-08-27 10:16:42,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states 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 10:16:42,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:16:42,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:16:42,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 10:16:42,642 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:16:42,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:16:42,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1719213684, now seen corresponding path program 1 times [2023-08-27 10:16:42,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:16:42,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335931512] [2023-08-27 10:16:42,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:16:42,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:16:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:16:42,733 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 10:16:42,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:16:42,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335931512] [2023-08-27 10:16:42,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335931512] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:16:42,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:16:42,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 10:16:42,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855341876] [2023-08-27 10:16:42,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:16:42,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:16:42,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:16:42,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:16:42,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:16:42,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 179 [2023-08-27 10:16:42,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 59 transitions, 669 flow. Second operand has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 10:16:42,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:16:42,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 179 [2023-08-27 10:16:42,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:16:42,889 INFO L124 PetriNetUnfolderBase]: 491/1070 cut-off events. [2023-08-27 10:16:42,889 INFO L125 PetriNetUnfolderBase]: For 8731/8784 co-relation queries the response was YES. [2023-08-27 10:16:42,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6454 conditions, 1070 events. 491/1070 cut-off events. For 8731/8784 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 7006 event pairs, 88 based on Foata normal form. 29/1001 useless extension candidates. Maximal degree in co-relation 6417. Up to 542 conditions per place. [2023-08-27 10:16:42,901 INFO L140 encePairwiseOnDemand]: 174/179 looper letters, 78 selfloop transitions, 10 changer transitions 3/97 dead transitions. [2023-08-27 10:16:42,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 97 transitions, 1193 flow [2023-08-27 10:16:42,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 10:16:42,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 10:16:42,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 333 transitions. [2023-08-27 10:16:42,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4650837988826816 [2023-08-27 10:16:42,903 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 333 transitions. [2023-08-27 10:16:42,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 333 transitions. [2023-08-27 10:16:42,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:16:42,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 333 transitions. [2023-08-27 10:16:42,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states 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 10:16:42,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 10:16:42,905 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states 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 10:16:42,905 INFO L175 Difference]: Start difference. First operand has 67 places, 59 transitions, 669 flow. Second operand 4 states and 333 transitions. [2023-08-27 10:16:42,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 97 transitions, 1193 flow [2023-08-27 10:16:42,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 97 transitions, 1133 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-27 10:16:42,926 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 682 flow [2023-08-27 10:16:42,926 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=682, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2023-08-27 10:16:42,926 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 34 predicate places. [2023-08-27 10:16:42,927 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 682 flow [2023-08-27 10:16:42,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states 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 10:16:42,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:16:42,927 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:16:42,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 10:16:42,927 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:16:42,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:16:42,928 INFO L85 PathProgramCache]: Analyzing trace with hash 940259686, now seen corresponding path program 1 times [2023-08-27 10:16:42,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:16:42,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443691148] [2023-08-27 10:16:42,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:16:42,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:16:42,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:16:42,968 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 10:16:42,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:16:42,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443691148] [2023-08-27 10:16:42,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443691148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:16:42,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:16:42,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:16:42,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4954613] [2023-08-27 10:16:42,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:16:42,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 10:16:42,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:16:42,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 10:16:42,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-27 10:16:42,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 179 [2023-08-27 10:16:42,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 682 flow. Second operand has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states 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 10:16:42,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:16:42,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 179 [2023-08-27 10:16:42,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:16:43,103 INFO L124 PetriNetUnfolderBase]: 377/809 cut-off events. [2023-08-27 10:16:43,103 INFO L125 PetriNetUnfolderBase]: For 6264/6511 co-relation queries the response was YES. [2023-08-27 10:16:43,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4735 conditions, 809 events. 377/809 cut-off events. For 6264/6511 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5123 event pairs, 31 based on Foata normal form. 149/943 useless extension candidates. Maximal degree in co-relation 4697. Up to 295 conditions per place. [2023-08-27 10:16:43,109 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 32 selfloop transitions, 10 changer transitions 36/83 dead transitions. [2023-08-27 10:16:43,109 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 83 transitions, 1094 flow [2023-08-27 10:16:43,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:16:43,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:16:43,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 411 transitions. [2023-08-27 10:16:43,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4592178770949721 [2023-08-27 10:16:43,111 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 411 transitions. [2023-08-27 10:16:43,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 411 transitions. [2023-08-27 10:16:43,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:16:43,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 411 transitions. [2023-08-27 10:16:43,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 0 states have call successors, (0), 0 states 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 10:16:43,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states 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 10:16:43,114 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states 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 10:16:43,114 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 682 flow. Second operand 5 states and 411 transitions. [2023-08-27 10:16:43,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 83 transitions, 1094 flow [2023-08-27 10:16:43,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 83 transitions, 1077 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 10:16:43,141 INFO L231 Difference]: Finished difference. Result has 66 places, 30 transitions, 338 flow [2023-08-27 10:16:43,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=338, PETRI_PLACES=66, PETRI_TRANSITIONS=30} [2023-08-27 10:16:43,142 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 33 predicate places. [2023-08-27 10:16:43,142 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 30 transitions, 338 flow [2023-08-27 10:16:43,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 76.4) internal successors, (382), 5 states have internal predecessors, (382), 0 states have call successors, (0), 0 states 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 10:16:43,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:16:43,143 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:16:43,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 10:16:43,143 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:16:43,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:16:43,143 INFO L85 PathProgramCache]: Analyzing trace with hash 765259100, now seen corresponding path program 1 times [2023-08-27 10:16:43,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:16:43,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468839809] [2023-08-27 10:16:43,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:16:43,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:16:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:16:43,232 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 10:16:43,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:16:43,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468839809] [2023-08-27 10:16:43,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468839809] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:16:43,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:16:43,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 10:16:43,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112420085] [2023-08-27 10:16:43,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:16:43,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 10:16:43,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:16:43,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 10:16:43,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 10:16:43,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-27 10:16:43,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 30 transitions, 338 flow. Second operand has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 10:16:43,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:16:43,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-27 10:16:43,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:16:43,303 INFO L124 PetriNetUnfolderBase]: 65/158 cut-off events. [2023-08-27 10:16:43,303 INFO L125 PetriNetUnfolderBase]: For 1332/1353 co-relation queries the response was YES. [2023-08-27 10:16:43,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 158 events. 65/158 cut-off events. For 1332/1353 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 586 event pairs, 8 based on Foata normal form. 17/173 useless extension candidates. Maximal degree in co-relation 912. Up to 49 conditions per place. [2023-08-27 10:16:43,305 INFO L140 encePairwiseOnDemand]: 173/179 looper letters, 17 selfloop transitions, 10 changer transitions 23/52 dead transitions. [2023-08-27 10:16:43,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 52 transitions, 646 flow [2023-08-27 10:16:43,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 10:16:43,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 10:16:43,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 545 transitions. [2023-08-27 10:16:43,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349561053471668 [2023-08-27 10:16:43,307 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 545 transitions. [2023-08-27 10:16:43,307 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 545 transitions. [2023-08-27 10:16:43,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:16:43,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 545 transitions. [2023-08-27 10:16:43,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.85714285714286) internal successors, (545), 7 states have internal predecessors, (545), 0 states have call successors, (0), 0 states 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 10:16:43,310 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states 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 10:16:43,311 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 179.0) internal successors, (1432), 8 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states 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 10:16:43,311 INFO L175 Difference]: Start difference. First operand has 66 places, 30 transitions, 338 flow. Second operand 7 states and 545 transitions. [2023-08-27 10:16:43,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 52 transitions, 646 flow [2023-08-27 10:16:43,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 52 transitions, 455 flow, removed 26 selfloop flow, removed 17 redundant places. [2023-08-27 10:16:43,315 INFO L231 Difference]: Finished difference. Result has 53 places, 22 transitions, 171 flow [2023-08-27 10:16:43,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=219, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=171, PETRI_PLACES=53, PETRI_TRANSITIONS=22} [2023-08-27 10:16:43,315 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 20 predicate places. [2023-08-27 10:16:43,315 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 22 transitions, 171 flow [2023-08-27 10:16:43,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 0 states have call successors, (0), 0 states 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 10:16:43,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 10:16:43,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:16:43,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 10:16:43,316 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 10:16:43,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 10:16:43,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1764491596, now seen corresponding path program 1 times [2023-08-27 10:16:43,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 10:16:43,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974569978] [2023-08-27 10:16:43,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 10:16:43,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 10:16:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 10:16:43,417 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 10:16:43,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 10:16:43,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974569978] [2023-08-27 10:16:43,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974569978] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 10:16:43,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 10:16:43,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 10:16:43,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590540041] [2023-08-27 10:16:43,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 10:16:43,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 10:16:43,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 10:16:43,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 10:16:43,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 10:16:43,419 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 179 [2023-08-27 10:16:43,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 22 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states 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 10:16:43,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 10:16:43,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 179 [2023-08-27 10:16:43,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 10:16:43,453 INFO L124 PetriNetUnfolderBase]: 22/58 cut-off events. [2023-08-27 10:16:43,454 INFO L125 PetriNetUnfolderBase]: For 201/201 co-relation queries the response was YES. [2023-08-27 10:16:43,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 58 events. 22/58 cut-off events. For 201/201 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 105 event pairs, 4 based on Foata normal form. 1/59 useless extension candidates. Maximal degree in co-relation 285. Up to 18 conditions per place. [2023-08-27 10:16:43,454 INFO L140 encePairwiseOnDemand]: 175/179 looper letters, 0 selfloop transitions, 0 changer transitions 30/30 dead transitions. [2023-08-27 10:16:43,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 30 transitions, 270 flow [2023-08-27 10:16:43,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 10:16:43,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 10:16:43,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 387 transitions. [2023-08-27 10:16:43,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4324022346368715 [2023-08-27 10:16:43,456 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 387 transitions. [2023-08-27 10:16:43,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 387 transitions. [2023-08-27 10:16:43,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 10:16:43,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 387 transitions. [2023-08-27 10:16:43,458 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.4) internal successors, (387), 5 states have internal predecessors, (387), 0 states have call successors, (0), 0 states 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 10:16:43,459 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states 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 10:16:43,459 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states 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 10:16:43,459 INFO L175 Difference]: Start difference. First operand has 53 places, 22 transitions, 171 flow. Second operand 5 states and 387 transitions. [2023-08-27 10:16:43,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 30 transitions, 270 flow [2023-08-27 10:16:43,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 30 transitions, 193 flow, removed 3 selfloop flow, removed 18 redundant places. [2023-08-27 10:16:43,461 INFO L231 Difference]: Finished difference. Result has 36 places, 0 transitions, 0 flow [2023-08-27 10:16:43,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=36, PETRI_TRANSITIONS=0} [2023-08-27 10:16:43,461 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-08-27 10:16:43,461 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 0 transitions, 0 flow [2023-08-27 10:16:43,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 states 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 10:16:43,463 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-27 10:16:43,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-27 10:16:43,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-27 10:16:43,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-27 10:16:43,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-27 10:16:43,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-27 10:16:43,464 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (9 of 16 remaining) [2023-08-27 10:16:43,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2023-08-27 10:16:43,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 16 remaining) [2023-08-27 10:16:43,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 16 remaining) [2023-08-27 10:16:43,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-27 10:16:43,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-27 10:16:43,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-27 10:16:43,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-27 10:16:43,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-27 10:16:43,465 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-27 10:16:43,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 10:16:43,466 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 10:16:43,470 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 10:16:43,470 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 10:16:43,472 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 10:16:43 BasicIcfg [2023-08-27 10:16:43,472 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 10:16:43,473 INFO L158 Benchmark]: Toolchain (without parser) took 7388.68ms. Allocated memory was 373.3MB in the beginning and 545.3MB in the end (delta: 172.0MB). Free memory was 348.4MB in the beginning and 502.6MB in the end (delta: -154.2MB). Peak memory consumption was 19.3MB. Max. memory is 16.0GB. [2023-08-27 10:16:43,473 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 373.3MB. Free memory is still 349.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 10:16:43,473 INFO L158 Benchmark]: CACSL2BoogieTranslator took 474.27ms. Allocated memory is still 373.3MB. Free memory was 348.4MB in the beginning and 328.0MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 10:16:43,473 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.42ms. Allocated memory is still 373.3MB. Free memory was 328.0MB in the beginning and 326.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 10:16:43,473 INFO L158 Benchmark]: Boogie Preprocessor took 32.17ms. Allocated memory is still 373.3MB. Free memory was 326.3MB in the beginning and 324.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 10:16:43,474 INFO L158 Benchmark]: RCFGBuilder took 498.85ms. Allocated memory is still 373.3MB. Free memory was 324.3MB in the beginning and 307.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-27 10:16:43,474 INFO L158 Benchmark]: TraceAbstraction took 6323.63ms. Allocated memory was 373.3MB in the beginning and 545.3MB in the end (delta: 172.0MB). Free memory was 307.0MB in the beginning and 502.6MB in the end (delta: -195.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 10:16:43,475 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 373.3MB. Free memory is still 349.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 474.27ms. Allocated memory is still 373.3MB. Free memory was 348.4MB in the beginning and 328.0MB in the end (delta: 20.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 54.42ms. Allocated memory is still 373.3MB. Free memory was 328.0MB in the beginning and 326.3MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 32.17ms. Allocated memory is still 373.3MB. Free memory was 326.3MB in the beginning and 324.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 498.85ms. Allocated memory is still 373.3MB. Free memory was 324.3MB in the beginning and 307.6MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 6323.63ms. Allocated memory was 373.3MB in the beginning and 545.3MB in the end (delta: 172.0MB). Free memory was 307.0MB in the beginning and 502.6MB in the end (delta: -195.5MB). There was no memory consumed. 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: 2.3s, 96 PlacesBefore, 33 PlacesAfterwards, 89 TransitionsBefore, 24 TransitionsAfterwards, 2146 CoEnabledTransitionPairs, 8 FixpointIterations, 18 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 2 ChoiceCompositions, 87 TotalNumberOfCompositions, 6806 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2438, independent: 2214, independent conditional: 0, independent unconditional: 2214, dependent: 224, dependent conditional: 0, dependent unconditional: 224, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1220, independent: 1170, independent conditional: 0, independent unconditional: 1170, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2438, independent: 1044, independent conditional: 0, independent unconditional: 1044, dependent: 174, dependent conditional: 0, dependent unconditional: 174, unknown: 1220, unknown conditional: 0, unknown unconditional: 1220] , Statistics on independence cache: Total cache size (in pairs): 86, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 729]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 729]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 741]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 741]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 756]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 756]: 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, 119 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: 6.2s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 230 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 230 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 50 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 742 IncrementalHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 50 mSolverCounterUnsat, 19 mSDtfsCounter, 742 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=682occurred in iteration=11, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 548 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 10:16:43,494 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...