/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 21:25:50,540 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 21:25:50,601 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-26 21:25:50,605 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 21:25:50,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 21:25:50,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 21:25:50,630 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 21:25:50,630 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 21:25:50,631 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 21:25:50,634 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 21:25:50,634 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 21:25:50,634 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 21:25:50,634 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 21:25:50,635 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 21:25:50,635 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 21:25:50,636 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 21:25:50,636 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 21:25:50,636 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 21:25:50,636 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 21:25:50,636 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 21:25:50,636 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 21:25:50,637 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 21:25:50,637 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 21:25:50,638 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 21:25:50,638 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 21:25:50,638 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 21:25:50,638 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 21:25:50,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:25:50,638 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 21:25:50,638 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 21:25:50,639 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 21:25:50,639 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 21:25:50,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 21:25:50,640 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 21:25:50,640 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 21:25:50,640 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 21:25:50,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 21:25:50,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 21:25:50,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 21:25:50,905 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 21:25:50,905 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 21:25:50,906 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-26 21:25:51,883 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 21:25:52,119 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 21:25:52,119 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-26 21:25:52,128 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bd97394c/c9a19eb23624496aa215572ddf8c7c27/FLAGa68e972a4 [2023-08-26 21:25:52,139 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5bd97394c/c9a19eb23624496aa215572ddf8c7c27 [2023-08-26 21:25:52,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 21:25:52,144 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 21:25:52,147 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 21:25:52,147 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 21:25:52,149 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 21:25:52,150 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:25:52" (1/1) ... [2023-08-26 21:25:52,151 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20c88eb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:25:52, skipping insertion in model container [2023-08-26 21:25:52,151 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:25:52" (1/1) ... [2023-08-26 21:25:52,186 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 21:25:52,428 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:25:52,437 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 21:25:52,462 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 21:25:52,463 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 21:25:52,488 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:25:52,513 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 21:25:52,514 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 21:25:52,518 INFO L206 MainTranslator]: Completed translation [2023-08-26 21:25:52,520 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:25:52 WrapperNode [2023-08-26 21:25:52,520 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 21:25:52,521 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 21:25:52,521 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 21:25:52,521 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 21:25:52,526 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:25:52" (1/1) ... [2023-08-26 21:25:52,550 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:25:52" (1/1) ... [2023-08-26 21:25:52,570 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2023-08-26 21:25:52,570 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 21:25:52,571 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 21:25:52,571 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 21:25:52,571 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 21:25:52,578 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:25:52" (1/1) ... [2023-08-26 21:25:52,578 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:25:52" (1/1) ... [2023-08-26 21:25:52,591 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:25:52" (1/1) ... [2023-08-26 21:25:52,592 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:25:52" (1/1) ... [2023-08-26 21:25:52,595 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:25:52" (1/1) ... [2023-08-26 21:25:52,596 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:25:52" (1/1) ... [2023-08-26 21:25:52,597 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:25:52" (1/1) ... [2023-08-26 21:25:52,598 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:25:52" (1/1) ... [2023-08-26 21:25:52,600 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 21:25:52,600 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 21:25:52,600 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 21:25:52,608 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 21:25:52,608 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:25:52" (1/1) ... [2023-08-26 21:25:52,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:25:52,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 21:25:52,671 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-26 21:25:52,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-26 21:25:52,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 21:25:52,696 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 21:25:52,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 21:25:52,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 21:25:52,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 21:25:52,696 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-26 21:25:52,696 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-26 21:25:52,697 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-26 21:25:52,697 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-26 21:25:52,697 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-26 21:25:52,697 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-26 21:25:52,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 21:25:52,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 21:25:52,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 21:25:52,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 21:25:52,698 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 21:25:52,784 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 21:25:52,785 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 21:25:52,922 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 21:25:52,938 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 21:25:52,938 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 21:25:52,940 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:25:52 BoogieIcfgContainer [2023-08-26 21:25:52,940 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 21:25:52,948 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 21:25:52,948 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 21:25:52,950 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 21:25:52,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 09:25:52" (1/3) ... [2023-08-26 21:25:52,950 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38733740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:25:52, skipping insertion in model container [2023-08-26 21:25:52,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:25:52" (2/3) ... [2023-08-26 21:25:52,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38733740 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:25:52, skipping insertion in model container [2023-08-26 21:25:52,951 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:25:52" (3/3) ... [2023-08-26 21:25:52,951 INFO L112 eAbstractionObserver]: Analyzing ICFG safe014_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-26 21:25:52,962 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 21:25:52,963 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-26 21:25:52,963 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 21:25:53,021 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 21:25:53,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 95 transitions, 205 flow [2023-08-26 21:25:53,083 INFO L124 PetriNetUnfolderBase]: 3/92 cut-off events. [2023-08-26 21:25:53,083 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:25:53,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 92 events. 3/92 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. 0/82 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-08-26 21:25:53,087 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 95 transitions, 205 flow [2023-08-26 21:25:53,090 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 92 transitions, 193 flow [2023-08-26 21:25:53,092 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 21:25:53,099 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 92 transitions, 193 flow [2023-08-26 21:25:53,101 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 92 transitions, 193 flow [2023-08-26 21:25:53,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 92 transitions, 193 flow [2023-08-26 21:25:53,120 INFO L124 PetriNetUnfolderBase]: 3/92 cut-off events. [2023-08-26 21:25:53,121 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:25:53,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 92 events. 3/92 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. 0/82 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-08-26 21:25:53,122 INFO L119 LiptonReduction]: Number of co-enabled transitions 2256 [2023-08-26 21:25:54,780 INFO L134 LiptonReduction]: Checked pairs total: 6787 [2023-08-26 21:25:54,780 INFO L136 LiptonReduction]: Total number of compositions: 84 [2023-08-26 21:25:54,790 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 21:25:54,795 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;@141b1a09, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 21:25:54,795 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-26 21:25:54,797 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 21:25:54,797 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-26 21:25:54,797 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:25:54,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:25:54,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 21:25:54,798 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:25:54,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:25:54,802 INFO L85 PathProgramCache]: Analyzing trace with hash 336258923, now seen corresponding path program 1 times [2023-08-26 21:25:54,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:25:54,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946011490] [2023-08-26 21:25:54,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:25:54,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:25:54,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:25:55,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:25:55,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:25:55,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946011490] [2023-08-26 21:25:55,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946011490] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:25:55,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:25:55,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:25:55,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605692633] [2023-08-26 21:25:55,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:25:55,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:25:55,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:25:55,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:25:55,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:25:55,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 179 [2023-08-26 21:25:55,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 59 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) [2023-08-26 21:25:55,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:25:55,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 179 [2023-08-26 21:25:55,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:25:55,145 INFO L124 PetriNetUnfolderBase]: 496/814 cut-off events. [2023-08-26 21:25:55,145 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-26 21:25:55,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1658 conditions, 814 events. 496/814 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 3702 event pairs, 127 based on Foata normal form. 0/514 useless extension candidates. Maximal degree in co-relation 1647. Up to 710 conditions per place. [2023-08-26 21:25:55,152 INFO L140 encePairwiseOnDemand]: 168/179 looper letters, 30 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2023-08-26 21:25:55,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 157 flow [2023-08-26 21:25:55,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:25:55,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:25:55,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2023-08-26 21:25:55,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083798882681564 [2023-08-26 21:25:55,162 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2023-08-26 21:25:55,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2023-08-26 21:25:55,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:25:55,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2023-08-26 21:25:55,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:55,169 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) [2023-08-26 21:25:55,170 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) [2023-08-26 21:25:55,171 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 59 flow. Second operand 3 states and 273 transitions. [2023-08-26 21:25:55,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 157 flow [2023-08-26 21:25:55,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 37 transitions, 152 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 21:25:55,174 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 90 flow [2023-08-26 21:25:55,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2023-08-26 21:25:55,178 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-08-26 21:25:55,178 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 90 flow [2023-08-26 21:25:55,179 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) [2023-08-26 21:25:55,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:25:55,179 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:25:55,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 21:25:55,179 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:25:55,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:25:55,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1724779416, now seen corresponding path program 1 times [2023-08-26 21:25:55,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:25:55,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994716618] [2023-08-26 21:25:55,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:25:55,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:25:55,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:25:55,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:25:55,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:25:55,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994716618] [2023-08-26 21:25:55,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994716618] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:25:55,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:25:55,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:25:55,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076047729] [2023-08-26 21:25:55,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:25:55,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:25:55,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:25:55,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:25:55,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:25:55,320 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-26 21:25:55,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:55,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:25:55,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-26 21:25:55,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:25:55,455 INFO L124 PetriNetUnfolderBase]: 965/1704 cut-off events. [2023-08-26 21:25:55,455 INFO L125 PetriNetUnfolderBase]: For 247/263 co-relation queries the response was YES. [2023-08-26 21:25:55,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4226 conditions, 1704 events. 965/1704 cut-off events. For 247/263 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10348 event pairs, 367 based on Foata normal form. 5/1372 useless extension candidates. Maximal degree in co-relation 4215. Up to 817 conditions per place. [2023-08-26 21:25:55,465 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 36 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2023-08-26 21:25:55,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 241 flow [2023-08-26 21:25:55,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:25:55,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:25:55,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2023-08-26 21:25:55,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4729981378026071 [2023-08-26 21:25:55,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2023-08-26 21:25:55,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2023-08-26 21:25:55,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:25:55,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2023-08-26 21:25:55,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:55,469 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) [2023-08-26 21:25:55,470 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) [2023-08-26 21:25:55,470 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 90 flow. Second operand 3 states and 254 transitions. [2023-08-26 21:25:55,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 241 flow [2023-08-26 21:25:55,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 47 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:25:55,471 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 140 flow [2023-08-26 21:25:55,471 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2023-08-26 21:25:55,472 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-26 21:25:55,472 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 140 flow [2023-08-26 21:25:55,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:55,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:25:55,473 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:25:55,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 21:25:55,473 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:25:55,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:25:55,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1928555294, now seen corresponding path program 1 times [2023-08-26 21:25:55,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:25:55,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554602233] [2023-08-26 21:25:55,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:25:55,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:25:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:25:55,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:25:55,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:25:55,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554602233] [2023-08-26 21:25:55,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554602233] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:25:55,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:25:55,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:25:55,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558622308] [2023-08-26 21:25:55,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:25:55,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:25:55,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:25:55,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:25:55,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:25:55,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-26 21:25:55,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:55,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:25:55,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-26 21:25:55,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:25:55,705 INFO L124 PetriNetUnfolderBase]: 921/1642 cut-off events. [2023-08-26 21:25:55,705 INFO L125 PetriNetUnfolderBase]: For 932/952 co-relation queries the response was YES. [2023-08-26 21:25:55,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4846 conditions, 1642 events. 921/1642 cut-off events. For 932/952 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9892 event pairs, 235 based on Foata normal form. 16/1394 useless extension candidates. Maximal degree in co-relation 4832. Up to 793 conditions per place. [2023-08-26 21:25:55,714 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 48 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2023-08-26 21:25:55,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 60 transitions, 366 flow [2023-08-26 21:25:55,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:25:55,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:25:55,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 331 transitions. [2023-08-26 21:25:55,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4622905027932961 [2023-08-26 21:25:55,716 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 331 transitions. [2023-08-26 21:25:55,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 331 transitions. [2023-08-26 21:25:55,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:25:55,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 331 transitions. [2023-08-26 21:25:55,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:55,718 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) [2023-08-26 21:25:55,719 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) [2023-08-26 21:25:55,719 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 140 flow. Second operand 4 states and 331 transitions. [2023-08-26 21:25:55,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 60 transitions, 366 flow [2023-08-26 21:25:55,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 60 transitions, 342 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:25:55,722 INFO L231 Difference]: Finished difference. Result has 41 places, 38 transitions, 190 flow [2023-08-26 21:25:55,722 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=190, PETRI_PLACES=41, PETRI_TRANSITIONS=38} [2023-08-26 21:25:55,723 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-08-26 21:25:55,723 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 38 transitions, 190 flow [2023-08-26 21:25:55,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:55,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:25:55,723 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:25:55,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 21:25:55,724 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:25:55,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:25:55,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1928556255, now seen corresponding path program 1 times [2023-08-26 21:25:55,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:25:55,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711372029] [2023-08-26 21:25:55,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:25:55,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:25:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:25:55,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:25:55,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:25:55,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711372029] [2023-08-26 21:25:55,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711372029] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:25:55,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:25:55,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:25:55,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685476603] [2023-08-26 21:25:55,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:25:55,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:25:55,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:25:55,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:25:55,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:25:55,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-26 21:25:55,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 38 transitions, 190 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:55,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:25:55,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-26 21:25:55,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:25:55,937 INFO L124 PetriNetUnfolderBase]: 900/1603 cut-off events. [2023-08-26 21:25:55,938 INFO L125 PetriNetUnfolderBase]: For 1490/1527 co-relation queries the response was YES. [2023-08-26 21:25:55,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5085 conditions, 1603 events. 900/1603 cut-off events. For 1490/1527 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9657 event pairs, 213 based on Foata normal form. 14/1355 useless extension candidates. Maximal degree in co-relation 5068. Up to 793 conditions per place. [2023-08-26 21:25:55,946 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 56 selfloop transitions, 13 changer transitions 0/73 dead transitions. [2023-08-26 21:25:55,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 73 transitions, 480 flow [2023-08-26 21:25:55,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:25:55,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:25:55,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 338 transitions. [2023-08-26 21:25:55,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4720670391061452 [2023-08-26 21:25:55,948 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 338 transitions. [2023-08-26 21:25:55,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 338 transitions. [2023-08-26 21:25:55,948 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:25:55,948 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 338 transitions. [2023-08-26 21:25:55,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.5) internal successors, (338), 4 states have internal predecessors, (338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:55,950 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) [2023-08-26 21:25:55,951 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) [2023-08-26 21:25:55,951 INFO L175 Difference]: Start difference. First operand has 41 places, 38 transitions, 190 flow. Second operand 4 states and 338 transitions. [2023-08-26 21:25:55,951 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 73 transitions, 480 flow [2023-08-26 21:25:55,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 73 transitions, 475 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:25:55,955 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 296 flow [2023-08-26 21:25:55,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=296, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2023-08-26 21:25:55,956 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2023-08-26 21:25:55,957 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 296 flow [2023-08-26 21:25:55,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:55,957 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:25:55,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:25:55,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 21:25:55,957 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:25:55,958 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:25:55,958 INFO L85 PathProgramCache]: Analyzing trace with hash -795030306, now seen corresponding path program 1 times [2023-08-26 21:25:55,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:25:55,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479709149] [2023-08-26 21:25:55,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:25:55,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:25:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:25:55,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:25:55,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:25:55,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479709149] [2023-08-26 21:25:56,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479709149] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:25:56,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:25:56,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:25:56,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951187508] [2023-08-26 21:25:56,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:25:56,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:25:56,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:25:56,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:25:56,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:25:56,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 179 [2023-08-26 21:25:56,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:56,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:25:56,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 179 [2023-08-26 21:25:56,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:25:56,139 INFO L124 PetriNetUnfolderBase]: 662/1143 cut-off events. [2023-08-26 21:25:56,140 INFO L125 PetriNetUnfolderBase]: For 2899/3017 co-relation queries the response was YES. [2023-08-26 21:25:56,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4326 conditions, 1143 events. 662/1143 cut-off events. For 2899/3017 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6213 event pairs, 100 based on Foata normal form. 74/1003 useless extension candidates. Maximal degree in co-relation 4305. Up to 878 conditions per place. [2023-08-26 21:25:56,146 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 48 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2023-08-26 21:25:56,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 61 transitions, 537 flow [2023-08-26 21:25:56,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:25:56,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:25:56,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 342 transitions. [2023-08-26 21:25:56,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4776536312849162 [2023-08-26 21:25:56,148 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 342 transitions. [2023-08-26 21:25:56,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 342 transitions. [2023-08-26 21:25:56,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:25:56,149 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 342 transitions. [2023-08-26 21:25:56,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:56,150 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) [2023-08-26 21:25:56,151 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) [2023-08-26 21:25:56,151 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 296 flow. Second operand 4 states and 342 transitions. [2023-08-26 21:25:56,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 61 transitions, 537 flow [2023-08-26 21:25:56,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 61 transitions, 530 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:25:56,155 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 288 flow [2023-08-26 21:25:56,155 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2023-08-26 21:25:56,156 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 11 predicate places. [2023-08-26 21:25:56,156 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 288 flow [2023-08-26 21:25:56,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:56,157 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:25:56,157 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:25:56,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 21:25:56,157 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:25:56,157 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:25:56,157 INFO L85 PathProgramCache]: Analyzing trace with hash -795030305, now seen corresponding path program 1 times [2023-08-26 21:25:56,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:25:56,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [588086307] [2023-08-26 21:25:56,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:25:56,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:25:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:25:56,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:25:56,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:25:56,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [588086307] [2023-08-26 21:25:56,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [588086307] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:25:56,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:25:56,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:25:56,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229231749] [2023-08-26 21:25:56,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:25:56,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:25:56,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:25:56,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:25:56,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:25:56,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 179 [2023-08-26 21:25:56,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:56,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:25:56,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 179 [2023-08-26 21:25:56,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:25:56,312 INFO L124 PetriNetUnfolderBase]: 453/800 cut-off events. [2023-08-26 21:25:56,312 INFO L125 PetriNetUnfolderBase]: For 2291/2403 co-relation queries the response was YES. [2023-08-26 21:25:56,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3253 conditions, 800 events. 453/800 cut-off events. For 2291/2403 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4074 event pairs, 44 based on Foata normal form. 68/825 useless extension candidates. Maximal degree in co-relation 3231. Up to 290 conditions per place. [2023-08-26 21:25:56,316 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 62 selfloop transitions, 7 changer transitions 0/78 dead transitions. [2023-08-26 21:25:56,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 78 transitions, 688 flow [2023-08-26 21:25:56,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:25:56,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:25:56,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2023-08-26 21:25:56,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930167597765363 [2023-08-26 21:25:56,329 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 353 transitions. [2023-08-26 21:25:56,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 353 transitions. [2023-08-26 21:25:56,330 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:25:56,330 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 353 transitions. [2023-08-26 21:25:56,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:56,331 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) [2023-08-26 21:25:56,332 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) [2023-08-26 21:25:56,332 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 288 flow. Second operand 4 states and 353 transitions. [2023-08-26 21:25:56,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 78 transitions, 688 flow [2023-08-26 21:25:56,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 78 transitions, 683 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:25:56,334 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 327 flow [2023-08-26 21:25:56,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=327, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-08-26 21:25:56,335 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 13 predicate places. [2023-08-26 21:25:56,335 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 327 flow [2023-08-26 21:25:56,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:56,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:25:56,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:25:56,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 21:25:56,348 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:25:56,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:25:56,349 INFO L85 PathProgramCache]: Analyzing trace with hash 125783717, now seen corresponding path program 1 times [2023-08-26 21:25:56,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:25:56,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370971355] [2023-08-26 21:25:56,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:25:56,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:25:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:25:56,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:25:56,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:25:56,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370971355] [2023-08-26 21:25:56,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370971355] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:25:56,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:25:56,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:25:56,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367964840] [2023-08-26 21:25:56,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:25:56,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:25:56,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:25:56,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:25:56,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:25:56,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 179 [2023-08-26 21:25:56,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 327 flow. Second operand has 5 states, 5 states have (on average 72.0) internal successors, (360), 5 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:56,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:25:56,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 179 [2023-08-26 21:25:56,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:25:56,542 INFO L124 PetriNetUnfolderBase]: 885/1440 cut-off events. [2023-08-26 21:25:56,542 INFO L125 PetriNetUnfolderBase]: For 4772/4772 co-relation queries the response was YES. [2023-08-26 21:25:56,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6540 conditions, 1440 events. 885/1440 cut-off events. For 4772/4772 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6788 event pairs, 174 based on Foata normal form. 39/1437 useless extension candidates. Maximal degree in co-relation 6517. Up to 514 conditions per place. [2023-08-26 21:25:56,549 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 85 selfloop transitions, 8 changer transitions 3/96 dead transitions. [2023-08-26 21:25:56,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 96 transitions, 893 flow [2023-08-26 21:25:56,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:25:56,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:25:56,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 403 transitions. [2023-08-26 21:25:56,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45027932960893857 [2023-08-26 21:25:56,550 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 403 transitions. [2023-08-26 21:25:56,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 403 transitions. [2023-08-26 21:25:56,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:25:56,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 403 transitions. [2023-08-26 21:25:56,551 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.6) internal successors, (403), 5 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:56,552 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) [2023-08-26 21:25:56,552 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) [2023-08-26 21:25:56,552 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 327 flow. Second operand 5 states and 403 transitions. [2023-08-26 21:25:56,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 96 transitions, 893 flow [2023-08-26 21:25:56,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 96 transitions, 847 flow, removed 11 selfloop flow, removed 2 redundant places. [2023-08-26 21:25:56,557 INFO L231 Difference]: Finished difference. Result has 53 places, 50 transitions, 427 flow [2023-08-26 21:25:56,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=313, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=427, PETRI_PLACES=53, PETRI_TRANSITIONS=50} [2023-08-26 21:25:56,558 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 19 predicate places. [2023-08-26 21:25:56,558 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 50 transitions, 427 flow [2023-08-26 21:25:56,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.0) internal successors, (360), 5 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:56,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:25:56,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:25:56,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 21:25:56,558 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:25:56,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:25:56,559 INFO L85 PathProgramCache]: Analyzing trace with hash 2031398910, now seen corresponding path program 1 times [2023-08-26 21:25:56,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:25:56,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653655003] [2023-08-26 21:25:56,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:25:56,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:25:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:25:56,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:25:56,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:25:56,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653655003] [2023-08-26 21:25:56,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653655003] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:25:56,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:25:56,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:25:56,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702460579] [2023-08-26 21:25:56,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:25:56,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:25:56,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:25:56,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:25:56,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:25:56,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-26 21:25:56,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 50 transitions, 427 flow. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:56,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:25:56,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-26 21:25:56,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:25:56,750 INFO L124 PetriNetUnfolderBase]: 715/1222 cut-off events. [2023-08-26 21:25:56,751 INFO L125 PetriNetUnfolderBase]: For 4037/4044 co-relation queries the response was YES. [2023-08-26 21:25:56,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5713 conditions, 1222 events. 715/1222 cut-off events. For 4037/4044 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 6142 event pairs, 92 based on Foata normal form. 5/1183 useless extension candidates. Maximal degree in co-relation 5686. Up to 503 conditions per place. [2023-08-26 21:25:56,757 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 64 selfloop transitions, 24 changer transitions 0/89 dead transitions. [2023-08-26 21:25:56,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 892 flow [2023-08-26 21:25:56,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:25:56,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:25:56,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2023-08-26 21:25:56,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46368715083798884 [2023-08-26 21:25:56,759 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 332 transitions. [2023-08-26 21:25:56,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 332 transitions. [2023-08-26 21:25:56,759 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:25:56,759 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 332 transitions. [2023-08-26 21:25:56,760 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:56,761 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) [2023-08-26 21:25:56,761 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) [2023-08-26 21:25:56,761 INFO L175 Difference]: Start difference. First operand has 53 places, 50 transitions, 427 flow. Second operand 4 states and 332 transitions. [2023-08-26 21:25:56,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 892 flow [2023-08-26 21:25:56,770 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 89 transitions, 881 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-26 21:25:56,771 INFO L231 Difference]: Finished difference. Result has 57 places, 62 transitions, 686 flow [2023-08-26 21:25:56,771 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=419, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=686, PETRI_PLACES=57, PETRI_TRANSITIONS=62} [2023-08-26 21:25:56,771 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 23 predicate places. [2023-08-26 21:25:56,771 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 62 transitions, 686 flow [2023-08-26 21:25:56,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:56,772 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:25:56,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:25:56,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 21:25:56,772 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:25:56,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:25:56,772 INFO L85 PathProgramCache]: Analyzing trace with hash 183919479, now seen corresponding path program 1 times [2023-08-26 21:25:56,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:25:56,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585586465] [2023-08-26 21:25:56,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:25:56,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:25:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:25:56,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:25:56,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:25:56,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585586465] [2023-08-26 21:25:56,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585586465] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:25:56,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:25:56,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 21:25:56,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372723190] [2023-08-26 21:25:56,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:25:56,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:25:56,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:25:56,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:25:56,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:25:56,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-26 21:25:56,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 62 transitions, 686 flow. Second operand has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:56,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:25:56,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-26 21:25:56,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:25:57,058 INFO L124 PetriNetUnfolderBase]: 998/1725 cut-off events. [2023-08-26 21:25:57,058 INFO L125 PetriNetUnfolderBase]: For 9635/9654 co-relation queries the response was YES. [2023-08-26 21:25:57,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8825 conditions, 1725 events. 998/1725 cut-off events. For 9635/9654 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 9777 event pairs, 147 based on Foata normal form. 34/1681 useless extension candidates. Maximal degree in co-relation 8795. Up to 472 conditions per place. [2023-08-26 21:25:57,075 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 96 selfloop transitions, 44 changer transitions 3/144 dead transitions. [2023-08-26 21:25:57,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 144 transitions, 1737 flow [2023-08-26 21:25:57,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:25:57,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:25:57,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 497 transitions. [2023-08-26 21:25:57,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.462756052141527 [2023-08-26 21:25:57,077 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 497 transitions. [2023-08-26 21:25:57,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 497 transitions. [2023-08-26 21:25:57,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:25:57,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 497 transitions. [2023-08-26 21:25:57,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.83333333333333) internal successors, (497), 6 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:57,080 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:57,080 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:57,080 INFO L175 Difference]: Start difference. First operand has 57 places, 62 transitions, 686 flow. Second operand 6 states and 497 transitions. [2023-08-26 21:25:57,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 144 transitions, 1737 flow [2023-08-26 21:25:57,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 144 transitions, 1731 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:25:57,107 INFO L231 Difference]: Finished difference. Result has 66 places, 79 transitions, 1139 flow [2023-08-26 21:25:57,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=680, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1139, PETRI_PLACES=66, PETRI_TRANSITIONS=79} [2023-08-26 21:25:57,108 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 32 predicate places. [2023-08-26 21:25:57,108 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 79 transitions, 1139 flow [2023-08-26 21:25:57,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:57,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:25:57,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:25:57,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 21:25:57,109 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:25:57,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:25:57,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1384802588, now seen corresponding path program 1 times [2023-08-26 21:25:57,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:25:57,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774448749] [2023-08-26 21:25:57,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:25:57,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:25:57,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:25:57,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:25:57,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:25:57,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774448749] [2023-08-26 21:25:57,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774448749] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:25:57,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:25:57,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:25:57,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492177389] [2023-08-26 21:25:57,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:25:57,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:25:57,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:25:57,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:25:57,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:25:57,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 179 [2023-08-26 21:25:57,211 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 79 transitions, 1139 flow. Second operand has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:57,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:25:57,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 179 [2023-08-26 21:25:57,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:25:57,352 INFO L124 PetriNetUnfolderBase]: 657/1318 cut-off events. [2023-08-26 21:25:57,352 INFO L125 PetriNetUnfolderBase]: For 17440/18048 co-relation queries the response was YES. [2023-08-26 21:25:57,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6820 conditions, 1318 events. 657/1318 cut-off events. For 17440/18048 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 8897 event pairs, 129 based on Foata normal form. 616/1801 useless extension candidates. Maximal degree in co-relation 6784. Up to 851 conditions per place. [2023-08-26 21:25:57,358 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 102 selfloop transitions, 8 changer transitions 3/134 dead transitions. [2023-08-26 21:25:57,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 134 transitions, 2041 flow [2023-08-26 21:25:57,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:25:57,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:25:57,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 423 transitions. [2023-08-26 21:25:57,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47262569832402235 [2023-08-26 21:25:57,360 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 423 transitions. [2023-08-26 21:25:57,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 423 transitions. [2023-08-26 21:25:57,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:25:57,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 423 transitions. [2023-08-26 21:25:57,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.6) internal successors, (423), 5 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:57,362 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) [2023-08-26 21:25:57,362 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) [2023-08-26 21:25:57,362 INFO L175 Difference]: Start difference. First operand has 66 places, 79 transitions, 1139 flow. Second operand 5 states and 423 transitions. [2023-08-26 21:25:57,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 134 transitions, 2041 flow [2023-08-26 21:25:57,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 134 transitions, 2013 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:25:57,375 INFO L231 Difference]: Finished difference. Result has 72 places, 80 transitions, 1178 flow [2023-08-26 21:25:57,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=1073, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1178, PETRI_PLACES=72, PETRI_TRANSITIONS=80} [2023-08-26 21:25:57,377 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 38 predicate places. [2023-08-26 21:25:57,377 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 80 transitions, 1178 flow [2023-08-26 21:25:57,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:57,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:25:57,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:25:57,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 21:25:57,377 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:25:57,378 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:25:57,378 INFO L85 PathProgramCache]: Analyzing trace with hash 1747222546, now seen corresponding path program 1 times [2023-08-26 21:25:57,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:25:57,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369964400] [2023-08-26 21:25:57,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:25:57,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:25:57,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:25:57,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:25:57,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:25:57,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369964400] [2023-08-26 21:25:57,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369964400] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:25:57,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:25:57,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:25:57,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568534268] [2023-08-26 21:25:57,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:25:57,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:25:57,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:25:57,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:25:57,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:25:57,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 179 [2023-08-26 21:25:57,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 80 transitions, 1178 flow. Second operand has 5 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) [2023-08-26 21:25:57,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:25:57,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 179 [2023-08-26 21:25:57,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:25:57,615 INFO L124 PetriNetUnfolderBase]: 497/1102 cut-off events. [2023-08-26 21:25:57,615 INFO L125 PetriNetUnfolderBase]: For 17852/18448 co-relation queries the response was YES. [2023-08-26 21:25:57,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5894 conditions, 1102 events. 497/1102 cut-off events. For 17852/18448 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7827 event pairs, 63 based on Foata normal form. 560/1524 useless extension candidates. Maximal degree in co-relation 5853. Up to 449 conditions per place. [2023-08-26 21:25:57,620 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 101 selfloop transitions, 15 changer transitions 3/139 dead transitions. [2023-08-26 21:25:57,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 139 transitions, 2095 flow [2023-08-26 21:25:57,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 21:25:57,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 21:25:57,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 588 transitions. [2023-08-26 21:25:57,622 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4692737430167598 [2023-08-26 21:25:57,622 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 588 transitions. [2023-08-26 21:25:57,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 588 transitions. [2023-08-26 21:25:57,622 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:25:57,622 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 588 transitions. [2023-08-26 21:25:57,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 84.0) internal successors, (588), 7 states have internal predecessors, (588), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:57,625 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) [2023-08-26 21:25:57,626 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) [2023-08-26 21:25:57,626 INFO L175 Difference]: Start difference. First operand has 72 places, 80 transitions, 1178 flow. Second operand 7 states and 588 transitions. [2023-08-26 21:25:57,626 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 139 transitions, 2095 flow [2023-08-26 21:25:57,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 139 transitions, 2084 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 21:25:57,637 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 1114 flow [2023-08-26 21:25:57,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=1009, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1114, PETRI_PLACES=79, PETRI_TRANSITIONS=76} [2023-08-26 21:25:57,638 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 45 predicate places. [2023-08-26 21:25:57,638 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 1114 flow [2023-08-26 21:25:57,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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) [2023-08-26 21:25:57,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:25:57,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:25:57,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 21:25:57,639 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:25:57,639 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:25:57,639 INFO L85 PathProgramCache]: Analyzing trace with hash -597546947, now seen corresponding path program 1 times [2023-08-26 21:25:57,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:25:57,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024824879] [2023-08-26 21:25:57,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:25:57,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:25:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:25:57,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:25:57,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:25:57,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024824879] [2023-08-26 21:25:57,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024824879] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:25:57,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:25:57,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:25:57,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224121190] [2023-08-26 21:25:57,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:25:57,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:25:57,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:25:57,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:25:57,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:25:57,677 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 179 [2023-08-26 21:25:57,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 1114 flow. Second operand has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:57,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:25:57,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 179 [2023-08-26 21:25:57,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:25:57,804 INFO L124 PetriNetUnfolderBase]: 452/957 cut-off events. [2023-08-26 21:25:57,804 INFO L125 PetriNetUnfolderBase]: For 10248/10614 co-relation queries the response was YES. [2023-08-26 21:25:57,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6006 conditions, 957 events. 452/957 cut-off events. For 10248/10614 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6327 event pairs, 39 based on Foata normal form. 189/1118 useless extension candidates. Maximal degree in co-relation 5962. Up to 330 conditions per place. [2023-08-26 21:25:57,807 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 28 selfloop transitions, 10 changer transitions 56/103 dead transitions. [2023-08-26 21:25:57,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 103 transitions, 1701 flow [2023-08-26 21:25:57,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:25:57,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:25:57,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 426 transitions. [2023-08-26 21:25:57,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4759776536312849 [2023-08-26 21:25:57,809 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 426 transitions. [2023-08-26 21:25:57,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 426 transitions. [2023-08-26 21:25:57,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:25:57,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 426 transitions. [2023-08-26 21:25:57,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:57,811 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) [2023-08-26 21:25:57,811 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) [2023-08-26 21:25:57,811 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 1114 flow. Second operand 5 states and 426 transitions. [2023-08-26 21:25:57,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 103 transitions, 1701 flow [2023-08-26 21:25:57,826 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 103 transitions, 1674 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-26 21:25:57,827 INFO L231 Difference]: Finished difference. Result has 76 places, 35 transitions, 403 flow [2023-08-26 21:25:57,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=1069, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=403, PETRI_PLACES=76, PETRI_TRANSITIONS=35} [2023-08-26 21:25:57,829 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 42 predicate places. [2023-08-26 21:25:57,829 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 35 transitions, 403 flow [2023-08-26 21:25:57,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:57,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:25:57,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:25:57,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 21:25:57,829 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:25:57,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:25:57,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1670683723, now seen corresponding path program 1 times [2023-08-26 21:25:57,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:25:57,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346810626] [2023-08-26 21:25:57,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:25:57,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:25:57,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:25:57,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:25:57,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:25:57,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346810626] [2023-08-26 21:25:57,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346810626] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:25:57,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:25:57,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 21:25:57,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204610639] [2023-08-26 21:25:57,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:25:57,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 21:25:57,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:25:57,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 21:25:57,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-26 21:25:57,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 179 [2023-08-26 21:25:57,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 35 transitions, 403 flow. Second operand has 6 states, 6 states have (on average 77.16666666666667) internal successors, (463), 6 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:57,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:25:57,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 179 [2023-08-26 21:25:57,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:25:57,983 INFO L124 PetriNetUnfolderBase]: 56/145 cut-off events. [2023-08-26 21:25:57,983 INFO L125 PetriNetUnfolderBase]: For 1647/1690 co-relation queries the response was YES. [2023-08-26 21:25:57,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 145 events. 56/145 cut-off events. For 1647/1690 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 583 event pairs, 2 based on Foata normal form. 27/168 useless extension candidates. Maximal degree in co-relation 857. Up to 42 conditions per place. [2023-08-26 21:25:57,983 INFO L140 encePairwiseOnDemand]: 173/179 looper letters, 28 selfloop transitions, 12 changer transitions 19/64 dead transitions. [2023-08-26 21:25:57,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 64 transitions, 869 flow [2023-08-26 21:25:57,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 21:25:57,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 21:25:57,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 718 transitions. [2023-08-26 21:25:57,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4456859093730602 [2023-08-26 21:25:57,985 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 718 transitions. [2023-08-26 21:25:57,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 718 transitions. [2023-08-26 21:25:57,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:25:57,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 718 transitions. [2023-08-26 21:25:57,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.77777777777777) internal successors, (718), 9 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:57,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 179.0) internal successors, (1790), 10 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:57,988 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 179.0) internal successors, (1790), 10 states have internal predecessors, (1790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:57,988 INFO L175 Difference]: Start difference. First operand has 76 places, 35 transitions, 403 flow. Second operand 9 states and 718 transitions. [2023-08-26 21:25:57,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 64 transitions, 869 flow [2023-08-26 21:25:57,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 64 transitions, 673 flow, removed 28 selfloop flow, removed 18 redundant places. [2023-08-26 21:25:57,991 INFO L231 Difference]: Finished difference. Result has 64 places, 30 transitions, 274 flow [2023-08-26 21:25:57,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=274, PETRI_PLACES=64, PETRI_TRANSITIONS=30} [2023-08-26 21:25:57,993 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 30 predicate places. [2023-08-26 21:25:57,993 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 30 transitions, 274 flow [2023-08-26 21:25:57,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.16666666666667) internal successors, (463), 6 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:57,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:25:57,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:25:57,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 21:25:57,993 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:25:57,993 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:25:57,994 INFO L85 PathProgramCache]: Analyzing trace with hash 642449361, now seen corresponding path program 1 times [2023-08-26 21:25:57,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:25:57,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186589862] [2023-08-26 21:25:57,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:25:57,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:25:58,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:25:58,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:25:58,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:25:58,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186589862] [2023-08-26 21:25:58,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186589862] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:25:58,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:25:58,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:25:58,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692572127] [2023-08-26 21:25:58,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:25:58,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:25:58,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:25:58,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:25:58,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:25:58,076 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-26 21:25:58,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 30 transitions, 274 flow. Second operand has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:58,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:25:58,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-26 21:25:58,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:25:58,100 INFO L124 PetriNetUnfolderBase]: 50/117 cut-off events. [2023-08-26 21:25:58,100 INFO L125 PetriNetUnfolderBase]: For 898/906 co-relation queries the response was YES. [2023-08-26 21:25:58,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 117 events. 50/117 cut-off events. For 898/906 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 366 event pairs, 14 based on Foata normal form. 5/122 useless extension candidates. Maximal degree in co-relation 707. Up to 85 conditions per place. [2023-08-26 21:25:58,100 INFO L140 encePairwiseOnDemand]: 176/179 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2023-08-26 21:25:58,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 37 transitions, 384 flow [2023-08-26 21:25:58,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:25:58,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:25:58,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 311 transitions. [2023-08-26 21:25:58,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43435754189944137 [2023-08-26 21:25:58,101 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 311 transitions. [2023-08-26 21:25:58,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 311 transitions. [2023-08-26 21:25:58,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:25:58,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 311 transitions. [2023-08-26 21:25:58,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.75) internal successors, (311), 4 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:58,103 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) [2023-08-26 21:25:58,103 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) [2023-08-26 21:25:58,103 INFO L175 Difference]: Start difference. First operand has 64 places, 30 transitions, 274 flow. Second operand 4 states and 311 transitions. [2023-08-26 21:25:58,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 37 transitions, 384 flow [2023-08-26 21:25:58,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 37 transitions, 305 flow, removed 2 selfloop flow, removed 14 redundant places. [2023-08-26 21:25:58,105 INFO L231 Difference]: Finished difference. Result has 50 places, 0 transitions, 0 flow [2023-08-26 21:25:58,105 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=50, PETRI_TRANSITIONS=0} [2023-08-26 21:25:58,105 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2023-08-26 21:25:58,105 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 0 transitions, 0 flow [2023-08-26 21:25:58,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 75.2) internal successors, (376), 5 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:25:58,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-26 21:25:58,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-26 21:25:58,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-26 21:25:58,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-26 21:25:58,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-26 21:25:58,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-26 21:25:58,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (9 of 16 remaining) [2023-08-26 21:25:58,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2023-08-26 21:25:58,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 16 remaining) [2023-08-26 21:25:58,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 16 remaining) [2023-08-26 21:25:58,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-26 21:25:58,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-26 21:25:58,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-26 21:25:58,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-26 21:25:58,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-26 21:25:58,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-26 21:25:58,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-26 21:25:58,109 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:25:58,113 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 21:25:58,113 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 21:25:58,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 09:25:58 BasicIcfg [2023-08-26 21:25:58,114 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 21:25:58,115 INFO L158 Benchmark]: Toolchain (without parser) took 5971.12ms. Allocated memory was 429.9MB in the beginning and 727.7MB in the end (delta: 297.8MB). Free memory was 405.3MB in the beginning and 575.3MB in the end (delta: -170.0MB). Peak memory consumption was 129.8MB. Max. memory is 16.0GB. [2023-08-26 21:25:58,116 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 429.9MB. Free memory is still 406.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 21:25:58,116 INFO L158 Benchmark]: CACSL2BoogieTranslator took 373.36ms. Allocated memory is still 429.9MB. Free memory was 404.9MB in the beginning and 384.7MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-26 21:25:58,116 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.32ms. Allocated memory is still 429.9MB. Free memory was 384.7MB in the beginning and 382.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 21:25:58,116 INFO L158 Benchmark]: Boogie Preprocessor took 28.73ms. Allocated memory is still 429.9MB. Free memory was 382.6MB in the beginning and 381.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 21:25:58,116 INFO L158 Benchmark]: RCFGBuilder took 345.20ms. Allocated memory is still 429.9MB. Free memory was 381.0MB in the beginning and 365.4MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-26 21:25:58,117 INFO L158 Benchmark]: TraceAbstraction took 5166.68ms. Allocated memory was 429.9MB in the beginning and 727.7MB in the end (delta: 297.8MB). Free memory was 364.6MB in the beginning and 575.3MB in the end (delta: -210.7MB). Peak memory consumption was 87.9MB. Max. memory is 16.0GB. [2023-08-26 21:25:58,117 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 429.9MB. Free memory is still 406.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 373.36ms. Allocated memory is still 429.9MB. Free memory was 404.9MB in the beginning and 384.7MB in the end (delta: 20.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.32ms. Allocated memory is still 429.9MB. Free memory was 384.7MB in the beginning and 382.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.73ms. Allocated memory is still 429.9MB. Free memory was 382.6MB in the beginning and 381.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 345.20ms. Allocated memory is still 429.9MB. Free memory was 381.0MB in the beginning and 365.4MB in the end (delta: 15.5MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 5166.68ms. Allocated memory was 429.9MB in the beginning and 727.7MB in the end (delta: 297.8MB). Free memory was 364.6MB in the beginning and 575.3MB in the end (delta: -210.7MB). Peak memory consumption was 87.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 99 PlacesBefore, 34 PlacesAfterwards, 92 TransitionsBefore, 25 TransitionsAfterwards, 2256 CoEnabledTransitionPairs, 7 FixpointIterations, 20 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 84 TotalNumberOfCompositions, 6787 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3231, independent: 3019, independent conditional: 0, independent unconditional: 3019, dependent: 212, dependent conditional: 0, dependent unconditional: 212, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1261, independent: 1213, independent conditional: 0, independent unconditional: 1213, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3231, independent: 1806, independent conditional: 0, independent unconditional: 1806, dependent: 164, dependent conditional: 0, dependent unconditional: 164, unknown: 1261, unknown conditional: 0, unknown unconditional: 1261] , Statistics on independence cache: Total cache size (in pairs): 105, Positive cache size: 89, Positive conditional cache size: 0, Positive unconditional cache size: 89, 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: 733]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 733]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 748]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 748]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 763]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 763]: 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, 123 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: 5.1s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 291 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 291 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 815 IncrementalHoareTripleChecker+Invalid, 871 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 17 mSDtfsCounter, 815 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1178occurred in iteration=10, InterpolantAutomatonStates: 67, 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, 1.0s InterpolantComputationTime, 158 NumberOfCodeBlocks, 158 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 144 ConstructedInterpolants, 0 QuantifiedInterpolants, 656 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! [2023-08-26 21:25:58,147 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...