/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/safe024_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 21:28:30,865 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 21:28:30,951 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 21:28:30,956 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 21:28:30,956 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 21:28:30,985 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 21:28:30,986 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 21:28:30,986 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 21:28:30,987 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 21:28:30,991 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 21:28:30,991 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 21:28:30,991 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 21:28:30,992 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 21:28:30,993 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 21:28:30,993 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 21:28:30,993 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 21:28:30,993 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 21:28:30,994 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 21:28:30,994 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 21:28:30,994 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 21:28:30,994 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 21:28:30,995 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 21:28:30,995 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 21:28:30,996 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 21:28:30,996 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 21:28:30,996 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 21:28:30,997 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 21:28:30,997 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:28:30,997 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 21:28:30,997 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 21:28:30,998 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 21:28:30,998 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 21:28:30,999 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 21:28:30,999 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 21:28:30,999 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 21:28:30,999 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 21:28:31,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 21:28:31,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 21:28:31,350 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 21:28:31,351 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 21:28:31,351 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 21:28:31,352 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe024_tso.i [2023-08-26 21:28:32,478 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 21:28:32,751 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 21:28:32,752 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe024_tso.i [2023-08-26 21:28:32,764 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fce18850/5fa8a26fbc204ec5b1f162f21a1ae7c3/FLAG5c57d01e5 [2023-08-26 21:28:32,776 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9fce18850/5fa8a26fbc204ec5b1f162f21a1ae7c3 [2023-08-26 21:28:32,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 21:28:32,779 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 21:28:32,780 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 21:28:32,780 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 21:28:32,783 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 21:28:32,783 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:28:32" (1/1) ... [2023-08-26 21:28:32,784 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9239c3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:32, skipping insertion in model container [2023-08-26 21:28:32,784 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 09:28:32" (1/1) ... [2023-08-26 21:28:32,839 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 21:28:33,180 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:28:33,190 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 21:28:33,222 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 21:28:33,224 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-26 21:28:33,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 21:28:33,284 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 21:28:33,285 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-26 21:28:33,291 INFO L206 MainTranslator]: Completed translation [2023-08-26 21:28:33,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:33 WrapperNode [2023-08-26 21:28:33,292 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 21:28:33,293 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 21:28:33,293 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 21:28:33,293 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 21:28:33,299 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:33" (1/1) ... [2023-08-26 21:28:33,330 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:33" (1/1) ... [2023-08-26 21:28:33,351 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 75 [2023-08-26 21:28:33,352 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 21:28:33,353 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 21:28:33,353 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 21:28:33,353 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 21:28:33,361 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:33" (1/1) ... [2023-08-26 21:28:33,361 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:33" (1/1) ... [2023-08-26 21:28:33,379 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:33" (1/1) ... [2023-08-26 21:28:33,379 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:33" (1/1) ... [2023-08-26 21:28:33,384 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:33" (1/1) ... [2023-08-26 21:28:33,386 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:33" (1/1) ... [2023-08-26 21:28:33,387 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:33" (1/1) ... [2023-08-26 21:28:33,388 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:33" (1/1) ... [2023-08-26 21:28:33,390 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 21:28:33,391 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 21:28:33,391 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 21:28:33,391 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 21:28:33,392 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:33" (1/1) ... [2023-08-26 21:28:33,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 21:28:33,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 21:28:33,428 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 21:28:33,449 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 21:28:33,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 21:28:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-26 21:28:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 21:28:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 21:28:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 21:28:33,464 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-26 21:28:33,465 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-26 21:28:33,465 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-26 21:28:33,465 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-26 21:28:33,465 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-26 21:28:33,465 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-26 21:28:33,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 21:28:33,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-26 21:28:33,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 21:28:33,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 21:28:33,468 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 21:28:33,608 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 21:28:33,610 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 21:28:33,830 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 21:28:33,851 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 21:28:33,851 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-26 21:28:33,853 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:28:33 BoogieIcfgContainer [2023-08-26 21:28:33,853 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 21:28:33,855 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 21:28:33,855 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 21:28:33,862 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 21:28:33,863 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 09:28:32" (1/3) ... [2023-08-26 21:28:33,863 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dec2338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:28:33, skipping insertion in model container [2023-08-26 21:28:33,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 09:28:33" (2/3) ... [2023-08-26 21:28:33,864 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dec2338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 09:28:33, skipping insertion in model container [2023-08-26 21:28:33,864 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 09:28:33" (3/3) ... [2023-08-26 21:28:33,865 INFO L112 eAbstractionObserver]: Analyzing ICFG safe024_tso.i [2023-08-26 21:28:33,881 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 21:28:33,882 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-26 21:28:33,882 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 21:28:33,965 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-26 21:28:34,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 96 transitions, 207 flow [2023-08-26 21:28:34,077 INFO L124 PetriNetUnfolderBase]: 3/93 cut-off events. [2023-08-26 21:28:34,077 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:28:34,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 93 events. 3/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-08-26 21:28:34,083 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 96 transitions, 207 flow [2023-08-26 21:28:34,087 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 93 transitions, 195 flow [2023-08-26 21:28:34,091 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 21:28:34,104 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 100 places, 93 transitions, 195 flow [2023-08-26 21:28:34,108 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 100 places, 93 transitions, 195 flow [2023-08-26 21:28:34,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 93 transitions, 195 flow [2023-08-26 21:28:34,147 INFO L124 PetriNetUnfolderBase]: 3/93 cut-off events. [2023-08-26 21:28:34,148 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:28:34,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103 conditions, 93 events. 3/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-08-26 21:28:34,150 INFO L119 LiptonReduction]: Number of co-enabled transitions 2256 [2023-08-26 21:28:36,338 INFO L134 LiptonReduction]: Checked pairs total: 6619 [2023-08-26 21:28:36,338 INFO L136 LiptonReduction]: Total number of compositions: 83 [2023-08-26 21:28:36,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 21:28:36,355 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;@333bb773, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 21:28:36,355 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-26 21:28:36,357 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 21:28:36,358 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-26 21:28:36,358 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:28:36,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:28:36,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 21:28:36,359 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 21:28:36,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:28:36,363 INFO L85 PathProgramCache]: Analyzing trace with hash 338156962, now seen corresponding path program 1 times [2023-08-26 21:28:36,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:28:36,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148330041] [2023-08-26 21:28:36,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:28:36,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:28:36,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:28:36,567 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 21:28:36,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:28:36,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148330041] [2023-08-26 21:28:36,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148330041] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:28:36,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:28:36,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:28:36,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761160528] [2023-08-26 21:28:36,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:28:36,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:28:36,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:28:36,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:28:36,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:28:36,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 179 [2023-08-26 21:28:36,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 61 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:36,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:28:36,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 179 [2023-08-26 21:28:36,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:28:36,826 INFO L124 PetriNetUnfolderBase]: 711/1114 cut-off events. [2023-08-26 21:28:36,826 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-26 21:28:36,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2233 conditions, 1114 events. 711/1114 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5680 event pairs, 711 based on Foata normal form. 0/771 useless extension candidates. Maximal degree in co-relation 2222. Up to 1072 conditions per place. [2023-08-26 21:28:36,839 INFO L140 encePairwiseOnDemand]: 174/179 looper letters, 18 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-08-26 21:28:36,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 22 transitions, 91 flow [2023-08-26 21:28:36,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:28:36,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:28:36,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 257 transitions. [2023-08-26 21:28:36,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478584729981378 [2023-08-26 21:28:36,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 257 transitions. [2023-08-26 21:28:36,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 257 transitions. [2023-08-26 21:28:36,859 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:28:36,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 257 transitions. [2023-08-26 21:28:36,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 0 states have call successors, (0), 0 states 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 21:28:36,869 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 21:28:36,870 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 21:28:36,871 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 61 flow. Second operand 3 states and 257 transitions. [2023-08-26 21:28:36,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 22 transitions, 91 flow [2023-08-26 21:28:36,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 22 transitions, 88 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-26 21:28:36,875 INFO L231 Difference]: Finished difference. Result has 31 places, 22 transitions, 52 flow [2023-08-26 21:28:36,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=31, PETRI_TRANSITIONS=22} [2023-08-26 21:28:36,880 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -4 predicate places. [2023-08-26 21:28:36,880 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 22 transitions, 52 flow [2023-08-26 21:28:36,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:36,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:28:36,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 21:28:36,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 21:28:36,881 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:28:36,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:28:36,889 INFO L85 PathProgramCache]: Analyzing trace with hash 338156963, now seen corresponding path program 1 times [2023-08-26 21:28:36,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:28:36,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193859323] [2023-08-26 21:28:36,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:28:36,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:28:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:28:36,974 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 21:28:36,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:28:36,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193859323] [2023-08-26 21:28:36,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193859323] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:28:36,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:28:36,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 21:28:36,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793989876] [2023-08-26 21:28:36,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:28:36,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 21:28:36,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:28:36,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 21:28:36,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 21:28:36,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 179 [2023-08-26 21:28:36,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 22 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:36,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:28:36,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 179 [2023-08-26 21:28:36,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:28:37,070 INFO L124 PetriNetUnfolderBase]: 423/691 cut-off events. [2023-08-26 21:28:37,071 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 21:28:37,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1402 conditions, 691 events. 423/691 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2900 event pairs, 98 based on Foata normal form. 0/530 useless extension candidates. Maximal degree in co-relation 1396. Up to 562 conditions per place. [2023-08-26 21:28:37,077 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 29 selfloop transitions, 4 changer transitions 0/36 dead transitions. [2023-08-26 21:28:37,077 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 36 transitions, 150 flow [2023-08-26 21:28:37,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 21:28:37,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 21:28:37,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 270 transitions. [2023-08-26 21:28:37,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027932960893855 [2023-08-26 21:28:37,081 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 270 transitions. [2023-08-26 21:28:37,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 270 transitions. [2023-08-26 21:28:37,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:28:37,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 270 transitions. [2023-08-26 21:28:37,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 0 states have call successors, (0), 0 states 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 21:28:37,084 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 21:28:37,085 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 21:28:37,085 INFO L175 Difference]: Start difference. First operand has 31 places, 22 transitions, 52 flow. Second operand 3 states and 270 transitions. [2023-08-26 21:28:37,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 36 transitions, 150 flow [2023-08-26 21:28:37,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 36 transitions, 149 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:28:37,087 INFO L231 Difference]: Finished difference. Result has 33 places, 25 transitions, 81 flow [2023-08-26 21:28:37,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=33, PETRI_TRANSITIONS=25} [2023-08-26 21:28:37,088 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2023-08-26 21:28:37,089 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 25 transitions, 81 flow [2023-08-26 21:28:37,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:37,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:28:37,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:28:37,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 21:28:37,096 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 21:28:37,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:28:37,098 INFO L85 PathProgramCache]: Analyzing trace with hash -2008853611, now seen corresponding path program 1 times [2023-08-26 21:28:37,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:28:37,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165810218] [2023-08-26 21:28:37,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:28:37,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:28:37,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:28:37,312 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 21:28:37,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:28:37,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165810218] [2023-08-26 21:28:37,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165810218] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:28:37,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:28:37,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:28:37,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117707195] [2023-08-26 21:28:37,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:28:37,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:28:37,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:28:37,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:28:37,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:28:37,315 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-26 21:28:37,315 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 25 transitions, 81 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 21:28:37,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:28:37,317 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-26 21:28:37,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:28:37,505 INFO L124 PetriNetUnfolderBase]: 813/1262 cut-off events. [2023-08-26 21:28:37,505 INFO L125 PetriNetUnfolderBase]: For 170/170 co-relation queries the response was YES. [2023-08-26 21:28:37,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3140 conditions, 1262 events. 813/1262 cut-off events. For 170/170 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5871 event pairs, 223 based on Foata normal form. 0/1042 useless extension candidates. Maximal degree in co-relation 3132. Up to 775 conditions per place. [2023-08-26 21:28:37,512 INFO L140 encePairwiseOnDemand]: 173/179 looper letters, 49 selfloop transitions, 7 changer transitions 0/57 dead transitions. [2023-08-26 21:28:37,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 57 transitions, 288 flow [2023-08-26 21:28:37,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:28:37,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:28:37,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 412 transitions. [2023-08-26 21:28:37,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46033519553072627 [2023-08-26 21:28:37,514 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 412 transitions. [2023-08-26 21:28:37,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 412 transitions. [2023-08-26 21:28:37,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:28:37,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 412 transitions. [2023-08-26 21:28:37,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.4) internal successors, (412), 5 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:37,518 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 21:28:37,518 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 21:28:37,519 INFO L175 Difference]: Start difference. First operand has 33 places, 25 transitions, 81 flow. Second operand 5 states and 412 transitions. [2023-08-26 21:28:37,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 57 transitions, 288 flow [2023-08-26 21:28:37,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 57 transitions, 279 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 21:28:37,522 INFO L231 Difference]: Finished difference. Result has 40 places, 31 transitions, 133 flow [2023-08-26 21:28:37,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=133, PETRI_PLACES=40, PETRI_TRANSITIONS=31} [2023-08-26 21:28:37,524 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2023-08-26 21:28:37,524 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 31 transitions, 133 flow [2023-08-26 21:28:37,524 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 21:28:37,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:28:37,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:28:37,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 21:28:37,528 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:28:37,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:28:37,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1033958149, now seen corresponding path program 1 times [2023-08-26 21:28:37,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:28:37,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053525867] [2023-08-26 21:28:37,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:28:37,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:28:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:28:37,610 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 21:28:37,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:28:37,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053525867] [2023-08-26 21:28:37,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053525867] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:28:37,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:28:37,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:28:37,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584382177] [2023-08-26 21:28:37,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:28:37,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:28:37,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:28:37,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:28:37,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:28:37,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 179 [2023-08-26 21:28:37,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:37,613 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:28:37,613 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 179 [2023-08-26 21:28:37,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:28:37,721 INFO L124 PetriNetUnfolderBase]: 391/655 cut-off events. [2023-08-26 21:28:37,721 INFO L125 PetriNetUnfolderBase]: For 515/528 co-relation queries the response was YES. [2023-08-26 21:28:37,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1904 conditions, 655 events. 391/655 cut-off events. For 515/528 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2831 event pairs, 68 based on Foata normal form. 13/643 useless extension candidates. Maximal degree in co-relation 1891. Up to 268 conditions per place. [2023-08-26 21:28:37,726 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 47 selfloop transitions, 7 changer transitions 0/59 dead transitions. [2023-08-26 21:28:37,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 59 transitions, 353 flow [2023-08-26 21:28:37,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:28:37,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:28:37,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 360 transitions. [2023-08-26 21:28:37,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5027932960893855 [2023-08-26 21:28:37,728 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 360 transitions. [2023-08-26 21:28:37,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 360 transitions. [2023-08-26 21:28:37,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:28:37,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 360 transitions. [2023-08-26 21:28:37,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 90.0) internal successors, (360), 4 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 21:28:37,731 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 21:28:37,731 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 21:28:37,731 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 133 flow. Second operand 4 states and 360 transitions. [2023-08-26 21:28:37,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 59 transitions, 353 flow [2023-08-26 21:28:37,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 59 transitions, 353 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 21:28:37,735 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 177 flow [2023-08-26 21:28:37,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-08-26 21:28:37,735 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2023-08-26 21:28:37,736 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 177 flow [2023-08-26 21:28:37,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:37,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:28:37,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:28:37,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 21:28:37,736 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:28:37,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:28:37,737 INFO L85 PathProgramCache]: Analyzing trace with hash -2144959695, now seen corresponding path program 1 times [2023-08-26 21:28:37,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:28:37,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109383559] [2023-08-26 21:28:37,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:28:37,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:28:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:28:37,883 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 21:28:37,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:28:37,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109383559] [2023-08-26 21:28:37,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109383559] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:28:37,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:28:37,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:28:37,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217708910] [2023-08-26 21:28:37,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:28:37,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:28:37,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:28:37,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:28:37,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:28:37,886 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 179 [2023-08-26 21:28:37,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 177 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 21:28:37,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:28:37,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 179 [2023-08-26 21:28:37,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:28:38,138 INFO L124 PetriNetUnfolderBase]: 1063/1605 cut-off events. [2023-08-26 21:28:38,139 INFO L125 PetriNetUnfolderBase]: For 2442/2442 co-relation queries the response was YES. [2023-08-26 21:28:38,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5158 conditions, 1605 events. 1063/1605 cut-off events. For 2442/2442 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 6851 event pairs, 103 based on Foata normal form. 59/1643 useless extension candidates. Maximal degree in co-relation 5142. Up to 434 conditions per place. [2023-08-26 21:28:38,151 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 94 selfloop transitions, 29 changer transitions 3/126 dead transitions. [2023-08-26 21:28:38,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 126 transitions, 877 flow [2023-08-26 21:28:38,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-26 21:28:38,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-26 21:28:38,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 730 transitions. [2023-08-26 21:28:38,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45313469894475483 [2023-08-26 21:28:38,154 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 730 transitions. [2023-08-26 21:28:38,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 730 transitions. [2023-08-26 21:28:38,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:28:38,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 730 transitions. [2023-08-26 21:28:38,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 81.11111111111111) internal successors, (730), 9 states have internal predecessors, (730), 0 states have call successors, (0), 0 states 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 21:28:38,160 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 21:28:38,160 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 21:28:38,160 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 177 flow. Second operand 9 states and 730 transitions. [2023-08-26 21:28:38,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 126 transitions, 877 flow [2023-08-26 21:28:38,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 126 transitions, 817 flow, removed 14 selfloop flow, removed 2 redundant places. [2023-08-26 21:28:38,173 INFO L231 Difference]: Finished difference. Result has 58 places, 58 transitions, 435 flow [2023-08-26 21:28:38,174 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=435, PETRI_PLACES=58, PETRI_TRANSITIONS=58} [2023-08-26 21:28:38,176 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 23 predicate places. [2023-08-26 21:28:38,176 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 58 transitions, 435 flow [2023-08-26 21:28:38,177 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 21:28:38,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:28:38,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:28:38,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 21:28:38,177 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:28:38,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:28:38,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1369398559, now seen corresponding path program 1 times [2023-08-26 21:28:38,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:28:38,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103182414] [2023-08-26 21:28:38,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:28:38,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:28:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:28:38,290 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 21:28:38,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:28:38,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103182414] [2023-08-26 21:28:38,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103182414] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:28:38,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:28:38,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 21:28:38,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647963886] [2023-08-26 21:28:38,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:28:38,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:28:38,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:28:38,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:28:38,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:28:38,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 179 [2023-08-26 21:28:38,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 58 transitions, 435 flow. Second operand has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states 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 21:28:38,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:28:38,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 179 [2023-08-26 21:28:38,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:28:38,496 INFO L124 PetriNetUnfolderBase]: 787/1314 cut-off events. [2023-08-26 21:28:38,496 INFO L125 PetriNetUnfolderBase]: For 5332/5395 co-relation queries the response was YES. [2023-08-26 21:28:38,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5410 conditions, 1314 events. 787/1314 cut-off events. For 5332/5395 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6711 event pairs, 99 based on Foata normal form. 55/1317 useless extension candidates. Maximal degree in co-relation 5386. Up to 501 conditions per place. [2023-08-26 21:28:38,511 INFO L140 encePairwiseOnDemand]: 174/179 looper letters, 56 selfloop transitions, 16 changer transitions 3/93 dead transitions. [2023-08-26 21:28:38,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 93 transitions, 777 flow [2023-08-26 21:28:38,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:28:38,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:28:38,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 422 transitions. [2023-08-26 21:28:38,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47150837988826816 [2023-08-26 21:28:38,514 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 422 transitions. [2023-08-26 21:28:38,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 422 transitions. [2023-08-26 21:28:38,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:28:38,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 422 transitions. [2023-08-26 21:28:38,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 0 states have call successors, (0), 0 states 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 21:28:38,518 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 21:28:38,518 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 21:28:38,519 INFO L175 Difference]: Start difference. First operand has 58 places, 58 transitions, 435 flow. Second operand 5 states and 422 transitions. [2023-08-26 21:28:38,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 93 transitions, 777 flow [2023-08-26 21:28:38,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 93 transitions, 769 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-26 21:28:38,576 INFO L231 Difference]: Finished difference. Result has 66 places, 63 transitions, 549 flow [2023-08-26 21:28:38,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=549, PETRI_PLACES=66, PETRI_TRANSITIONS=63} [2023-08-26 21:28:38,578 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 31 predicate places. [2023-08-26 21:28:38,578 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 63 transitions, 549 flow [2023-08-26 21:28:38,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.5) internal successors, (314), 4 states have internal predecessors, (314), 0 states have call successors, (0), 0 states 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 21:28:38,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:28:38,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:28:38,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 21:28:38,579 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 21:28:38,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:28:38,579 INFO L85 PathProgramCache]: Analyzing trace with hash -2069316560, now seen corresponding path program 1 times [2023-08-26 21:28:38,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:28:38,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650773801] [2023-08-26 21:28:38,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:28:38,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:28:38,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:28:38,699 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 21:28:38,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:28:38,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650773801] [2023-08-26 21:28:38,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650773801] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:28:38,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:28:38,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 21:28:38,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482562328] [2023-08-26 21:28:38,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:28:38,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 21:28:38,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:28:38,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 21:28:38,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-26 21:28:38,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 179 [2023-08-26 21:28:38,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 63 transitions, 549 flow. Second operand has 6 states, 6 states have (on average 71.83333333333333) internal successors, (431), 6 states have internal predecessors, (431), 0 states have call successors, (0), 0 states 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 21:28:38,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:28:38,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 179 [2023-08-26 21:28:38,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:28:38,966 INFO L124 PetriNetUnfolderBase]: 1207/1862 cut-off events. [2023-08-26 21:28:38,967 INFO L125 PetriNetUnfolderBase]: For 10855/10855 co-relation queries the response was YES. [2023-08-26 21:28:38,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8462 conditions, 1862 events. 1207/1862 cut-off events. For 10855/10855 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8483 event pairs, 179 based on Foata normal form. 43/1863 useless extension candidates. Maximal degree in co-relation 8432. Up to 476 conditions per place. [2023-08-26 21:28:38,983 INFO L140 encePairwiseOnDemand]: 173/179 looper letters, 110 selfloop transitions, 20 changer transitions 9/139 dead transitions. [2023-08-26 21:28:38,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 139 transitions, 1315 flow [2023-08-26 21:28:38,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 21:28:38,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 21:28:38,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 565 transitions. [2023-08-26 21:28:38,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4509177972865124 [2023-08-26 21:28:38,985 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 565 transitions. [2023-08-26 21:28:38,986 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 565 transitions. [2023-08-26 21:28:38,986 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:28:38,986 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 565 transitions. [2023-08-26 21:28:38,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 0 states have call successors, (0), 0 states 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 21:28:38,989 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 21:28:38,989 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 21:28:38,989 INFO L175 Difference]: Start difference. First operand has 66 places, 63 transitions, 549 flow. Second operand 7 states and 565 transitions. [2023-08-26 21:28:38,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 139 transitions, 1315 flow [2023-08-26 21:28:39,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 139 transitions, 1303 flow, removed 6 selfloop flow, removed 0 redundant places. [2023-08-26 21:28:39,051 INFO L231 Difference]: Finished difference. Result has 75 places, 69 transitions, 665 flow [2023-08-26 21:28:39,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=665, PETRI_PLACES=75, PETRI_TRANSITIONS=69} [2023-08-26 21:28:39,051 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 40 predicate places. [2023-08-26 21:28:39,052 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 69 transitions, 665 flow [2023-08-26 21:28:39,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 71.83333333333333) internal successors, (431), 6 states have internal predecessors, (431), 0 states have call successors, (0), 0 states 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 21:28:39,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:28:39,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:28:39,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 21:28:39,052 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 21:28:39,053 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:28:39,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1718412739, now seen corresponding path program 1 times [2023-08-26 21:28:39,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:28:39,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946110044] [2023-08-26 21:28:39,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:28:39,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:28:39,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:28:39,140 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 21:28:39,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:28:39,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946110044] [2023-08-26 21:28:39,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946110044] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:28:39,140 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:28:39,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:28:39,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264386158] [2023-08-26 21:28:39,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:28:39,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 21:28:39,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:28:39,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 21:28:39,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-26 21:28:39,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 179 [2023-08-26 21:28:39,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 69 transitions, 665 flow. Second operand has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states 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 21:28:39,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:28:39,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 179 [2023-08-26 21:28:39,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:28:39,298 INFO L124 PetriNetUnfolderBase]: 497/954 cut-off events. [2023-08-26 21:28:39,298 INFO L125 PetriNetUnfolderBase]: For 7619/7778 co-relation queries the response was YES. [2023-08-26 21:28:39,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4361 conditions, 954 events. 497/954 cut-off events. For 7619/7778 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5422 event pairs, 47 based on Foata normal form. 196/1078 useless extension candidates. Maximal degree in co-relation 4326. Up to 522 conditions per place. [2023-08-26 21:28:39,308 INFO L140 encePairwiseOnDemand]: 173/179 looper letters, 66 selfloop transitions, 5 changer transitions 0/89 dead transitions. [2023-08-26 21:28:39,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 89 transitions, 914 flow [2023-08-26 21:28:39,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 21:28:39,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 21:28:39,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 345 transitions. [2023-08-26 21:28:39,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4818435754189944 [2023-08-26 21:28:39,309 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 345 transitions. [2023-08-26 21:28:39,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 345 transitions. [2023-08-26 21:28:39,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:28:39,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 345 transitions. [2023-08-26 21:28:39,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 86.25) internal successors, (345), 4 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:39,312 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 21:28:39,312 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 21:28:39,312 INFO L175 Difference]: Start difference. First operand has 75 places, 69 transitions, 665 flow. Second operand 4 states and 345 transitions. [2023-08-26 21:28:39,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 89 transitions, 914 flow [2023-08-26 21:28:39,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 89 transitions, 904 flow, removed 5 selfloop flow, removed 0 redundant places. [2023-08-26 21:28:39,334 INFO L231 Difference]: Finished difference. Result has 80 places, 66 transitions, 666 flow [2023-08-26 21:28:39,335 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=612, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=666, PETRI_PLACES=80, PETRI_TRANSITIONS=66} [2023-08-26 21:28:39,336 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 45 predicate places. [2023-08-26 21:28:39,336 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 66 transitions, 666 flow [2023-08-26 21:28:39,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 78.75) internal successors, (315), 4 states have internal predecessors, (315), 0 states have call successors, (0), 0 states 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 21:28:39,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:28:39,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:28:39,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 21:28:39,337 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 21:28:39,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:28:39,337 INFO L85 PathProgramCache]: Analyzing trace with hash -24527, now seen corresponding path program 1 times [2023-08-26 21:28:39,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:28:39,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686572904] [2023-08-26 21:28:39,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:28:39,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:28:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:28:39,475 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 21:28:39,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:28:39,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686572904] [2023-08-26 21:28:39,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686572904] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:28:39,475 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:28:39,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 21:28:39,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668790762] [2023-08-26 21:28:39,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:28:39,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:28:39,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:28:39,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:28:39,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:28:39,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 179 [2023-08-26 21:28:39,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 66 transitions, 666 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states 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 21:28:39,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:28:39,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 179 [2023-08-26 21:28:39,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:28:39,627 INFO L124 PetriNetUnfolderBase]: 274/610 cut-off events. [2023-08-26 21:28:39,627 INFO L125 PetriNetUnfolderBase]: For 5052/5231 co-relation queries the response was YES. [2023-08-26 21:28:39,630 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2814 conditions, 610 events. 274/610 cut-off events. For 5052/5231 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3445 event pairs, 44 based on Foata normal form. 172/729 useless extension candidates. Maximal degree in co-relation 2775. Up to 196 conditions per place. [2023-08-26 21:28:39,634 INFO L140 encePairwiseOnDemand]: 170/179 looper letters, 55 selfloop transitions, 14 changer transitions 0/82 dead transitions. [2023-08-26 21:28:39,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 82 transitions, 877 flow [2023-08-26 21:28:39,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:28:39,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:28:39,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 509 transitions. [2023-08-26 21:28:39,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47392923649906893 [2023-08-26 21:28:39,637 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 509 transitions. [2023-08-26 21:28:39,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 509 transitions. [2023-08-26 21:28:39,637 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:28:39,637 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 509 transitions. [2023-08-26 21:28:39,639 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 84.83333333333333) internal successors, (509), 6 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:39,640 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 21:28:39,641 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 21:28:39,641 INFO L175 Difference]: Start difference. First operand has 80 places, 66 transitions, 666 flow. Second operand 6 states and 509 transitions. [2023-08-26 21:28:39,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 82 transitions, 877 flow [2023-08-26 21:28:39,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 82 transitions, 796 flow, removed 12 selfloop flow, removed 9 redundant places. [2023-08-26 21:28:39,654 INFO L231 Difference]: Finished difference. Result has 76 places, 55 transitions, 521 flow [2023-08-26 21:28:39,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=433, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=521, PETRI_PLACES=76, PETRI_TRANSITIONS=55} [2023-08-26 21:28:39,655 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 41 predicate places. [2023-08-26 21:28:39,655 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 55 transitions, 521 flow [2023-08-26 21:28:39,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 0 states have call successors, (0), 0 states 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 21:28:39,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:28:39,656 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:28:39,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 21:28:39,657 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:28:39,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:28:39,657 INFO L85 PathProgramCache]: Analyzing trace with hash 442091279, now seen corresponding path program 1 times [2023-08-26 21:28:39,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:28:39,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473694776] [2023-08-26 21:28:39,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:28:39,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:28:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:28:39,721 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 21:28:39,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:28:39,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473694776] [2023-08-26 21:28:39,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473694776] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:28:39,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:28:39,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 21:28:39,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019742047] [2023-08-26 21:28:39,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:28:39,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:28:39,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:28:39,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:28:39,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:28:39,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 179 [2023-08-26 21:28:39,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 55 transitions, 521 flow. Second operand has 5 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:39,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:28:39,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 179 [2023-08-26 21:28:39,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:28:39,837 INFO L124 PetriNetUnfolderBase]: 241/525 cut-off events. [2023-08-26 21:28:39,838 INFO L125 PetriNetUnfolderBase]: For 3195/3399 co-relation queries the response was YES. [2023-08-26 21:28:39,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2558 conditions, 525 events. 241/525 cut-off events. For 3195/3399 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2849 event pairs, 38 based on Foata normal form. 142/647 useless extension candidates. Maximal degree in co-relation 2523. Up to 172 conditions per place. [2023-08-26 21:28:39,842 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 30 selfloop transitions, 10 changer transitions 25/71 dead transitions. [2023-08-26 21:28:39,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 71 transitions, 768 flow [2023-08-26 21:28:39,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:28:39,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:28:39,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 433 transitions. [2023-08-26 21:28:39,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48379888268156424 [2023-08-26 21:28:39,844 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 433 transitions. [2023-08-26 21:28:39,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 433 transitions. [2023-08-26 21:28:39,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:28:39,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 433 transitions. [2023-08-26 21:28:39,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 86.6) internal successors, (433), 5 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:39,848 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 21:28:39,849 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 21:28:39,849 INFO L175 Difference]: Start difference. First operand has 76 places, 55 transitions, 521 flow. Second operand 5 states and 433 transitions. [2023-08-26 21:28:39,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 71 transitions, 768 flow [2023-08-26 21:28:39,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 71 transitions, 749 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-26 21:28:39,857 INFO L231 Difference]: Finished difference. Result has 72 places, 31 transitions, 264 flow [2023-08-26 21:28:39,857 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=72, PETRI_TRANSITIONS=31} [2023-08-26 21:28:39,858 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2023-08-26 21:28:39,858 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 31 transitions, 264 flow [2023-08-26 21:28:39,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.4) internal successors, (402), 5 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:39,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:28:39,859 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:28:39,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 21:28:39,859 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 21:28:39,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:28:39,860 INFO L85 PathProgramCache]: Analyzing trace with hash -74105160, now seen corresponding path program 1 times [2023-08-26 21:28:39,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:28:39,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679038899] [2023-08-26 21:28:39,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:28:39,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:28:39,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:28:39,996 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 21:28:39,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:28:39,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679038899] [2023-08-26 21:28:39,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679038899] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:28:39,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:28:39,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-26 21:28:39,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253790433] [2023-08-26 21:28:39,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:28:39,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-26 21:28:39,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:28:39,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-26 21:28:39,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-26 21:28:39,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 179 [2023-08-26 21:28:39,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 31 transitions, 264 flow. Second operand has 6 states, 6 states have (on average 78.16666666666667) internal successors, (469), 6 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:39,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:28:40,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 179 [2023-08-26 21:28:40,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:28:40,079 INFO L124 PetriNetUnfolderBase]: 104/227 cut-off events. [2023-08-26 21:28:40,079 INFO L125 PetriNetUnfolderBase]: For 1335/1380 co-relation queries the response was YES. [2023-08-26 21:28:40,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1107 conditions, 227 events. 104/227 cut-off events. For 1335/1380 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 937 event pairs, 20 based on Foata normal form. 29/249 useless extension candidates. Maximal degree in co-relation 1078. Up to 88 conditions per place. [2023-08-26 21:28:40,081 INFO L140 encePairwiseOnDemand]: 173/179 looper letters, 26 selfloop transitions, 11 changer transitions 1/44 dead transitions. [2023-08-26 21:28:40,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 44 transitions, 407 flow [2023-08-26 21:28:40,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:28:40,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:28:40,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 494 transitions. [2023-08-26 21:28:40,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45996275605214154 [2023-08-26 21:28:40,083 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 494 transitions. [2023-08-26 21:28:40,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 494 transitions. [2023-08-26 21:28:40,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:28:40,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 494 transitions. [2023-08-26 21:28:40,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 82.33333333333333) internal successors, (494), 6 states have internal predecessors, (494), 0 states have call successors, (0), 0 states 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 21:28:40,086 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 21:28:40,087 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 21:28:40,087 INFO L175 Difference]: Start difference. First operand has 72 places, 31 transitions, 264 flow. Second operand 6 states and 494 transitions. [2023-08-26 21:28:40,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 44 transitions, 407 flow [2023-08-26 21:28:40,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 44 transitions, 304 flow, removed 11 selfloop flow, removed 19 redundant places. [2023-08-26 21:28:40,092 INFO L231 Difference]: Finished difference. Result has 56 places, 31 transitions, 216 flow [2023-08-26 21:28:40,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=216, PETRI_PLACES=56, PETRI_TRANSITIONS=31} [2023-08-26 21:28:40,093 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 21 predicate places. [2023-08-26 21:28:40,093 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 31 transitions, 216 flow [2023-08-26 21:28:40,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.16666666666667) internal successors, (469), 6 states have internal predecessors, (469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 21:28:40,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:28:40,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:28:40,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-26 21:28:40,094 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-26 21:28:40,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:28:40,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1703781268, now seen corresponding path program 1 times [2023-08-26 21:28:40,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:28:40,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480649274] [2023-08-26 21:28:40,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:28:40,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:28:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:28:40,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 21:28:40,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:28:40,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480649274] [2023-08-26 21:28:40,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480649274] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:28:40,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:28:40,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 21:28:40,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114466856] [2023-08-26 21:28:40,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:28:40,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:28:40,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:28:40,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:28:40,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:28:40,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 179 [2023-08-26 21:28:40,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 31 transitions, 216 flow. Second operand has 5 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 0 states have call successors, (0), 0 states 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 21:28:40,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:28:40,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 179 [2023-08-26 21:28:40,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:28:40,324 INFO L124 PetriNetUnfolderBase]: 179/401 cut-off events. [2023-08-26 21:28:40,324 INFO L125 PetriNetUnfolderBase]: For 1452/1456 co-relation queries the response was YES. [2023-08-26 21:28:40,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1776 conditions, 401 events. 179/401 cut-off events. For 1452/1456 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1880 event pairs, 34 based on Foata normal form. 1/399 useless extension candidates. Maximal degree in co-relation 1756. Up to 184 conditions per place. [2023-08-26 21:28:40,326 INFO L140 encePairwiseOnDemand]: 175/179 looper letters, 24 selfloop transitions, 1 changer transitions 28/55 dead transitions. [2023-08-26 21:28:40,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 55 transitions, 496 flow [2023-08-26 21:28:40,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-26 21:28:40,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-26 21:28:40,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 401 transitions. [2023-08-26 21:28:40,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4480446927374302 [2023-08-26 21:28:40,328 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 401 transitions. [2023-08-26 21:28:40,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 401 transitions. [2023-08-26 21:28:40,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:28:40,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 401 transitions. [2023-08-26 21:28:40,329 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 80.2) internal successors, (401), 5 states have internal predecessors, (401), 0 states have call successors, (0), 0 states 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 21:28:40,331 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 21:28:40,331 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 21:28:40,331 INFO L175 Difference]: Start difference. First operand has 56 places, 31 transitions, 216 flow. Second operand 5 states and 401 transitions. [2023-08-26 21:28:40,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 55 transitions, 496 flow [2023-08-26 21:28:40,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 55 transitions, 456 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-26 21:28:40,336 INFO L231 Difference]: Finished difference. Result has 53 places, 24 transitions, 158 flow [2023-08-26 21:28:40,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=158, PETRI_PLACES=53, PETRI_TRANSITIONS=24} [2023-08-26 21:28:40,337 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 18 predicate places. [2023-08-26 21:28:40,337 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 24 transitions, 158 flow [2023-08-26 21:28:40,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 77.2) internal successors, (386), 5 states have internal predecessors, (386), 0 states have call successors, (0), 0 states 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 21:28:40,337 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 21:28:40,337 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:28:40,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-26 21:28:40,338 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 21:28:40,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 21:28:40,338 INFO L85 PathProgramCache]: Analyzing trace with hash 409838752, now seen corresponding path program 2 times [2023-08-26 21:28:40,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 21:28:40,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473969151] [2023-08-26 21:28:40,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 21:28:40,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 21:28:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 21:28:40,471 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 21:28:40,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 21:28:40,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473969151] [2023-08-26 21:28:40,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473969151] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 21:28:40,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 21:28:40,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-26 21:28:40,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665025202] [2023-08-26 21:28:40,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 21:28:40,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 21:28:40,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 21:28:40,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 21:28:40,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 21:28:40,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 179 [2023-08-26 21:28:40,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 24 transitions, 158 flow. Second operand has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states 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 21:28:40,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 21:28:40,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 179 [2023-08-26 21:28:40,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 21:28:40,539 INFO L124 PetriNetUnfolderBase]: 45/104 cut-off events. [2023-08-26 21:28:40,540 INFO L125 PetriNetUnfolderBase]: For 224/224 co-relation queries the response was YES. [2023-08-26 21:28:40,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 415 conditions, 104 events. 45/104 cut-off events. For 224/224 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 272 event pairs, 8 based on Foata normal form. 1/105 useless extension candidates. Maximal degree in co-relation 399. Up to 52 conditions per place. [2023-08-26 21:28:40,540 INFO L140 encePairwiseOnDemand]: 173/179 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2023-08-26 21:28:40,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 37 transitions, 292 flow [2023-08-26 21:28:40,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 21:28:40,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 21:28:40,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 449 transitions. [2023-08-26 21:28:40,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4180633147113594 [2023-08-26 21:28:40,542 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 449 transitions. [2023-08-26 21:28:40,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 449 transitions. [2023-08-26 21:28:40,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 21:28:40,543 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 449 transitions. [2023-08-26 21:28:40,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 74.83333333333333) internal successors, (449), 6 states have internal predecessors, (449), 0 states have call successors, (0), 0 states 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 21:28:40,545 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 21:28:40,546 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 21:28:40,546 INFO L175 Difference]: Start difference. First operand has 53 places, 24 transitions, 158 flow. Second operand 6 states and 449 transitions. [2023-08-26 21:28:40,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 37 transitions, 292 flow [2023-08-26 21:28:40,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 37 transitions, 197 flow, removed 14 selfloop flow, removed 16 redundant places. [2023-08-26 21:28:40,547 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-08-26 21:28:40,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-08-26 21:28:40,548 INFO L281 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2023-08-26 21:28:40,548 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-08-26 21:28:40,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states 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 21:28:40,550 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-26 21:28:40,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-26 21:28:40,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-26 21:28:40,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-26 21:28:40,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-26 21:28:40,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-26 21:28:40,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (9 of 16 remaining) [2023-08-26 21:28:40,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2023-08-26 21:28:40,551 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 16 remaining) [2023-08-26 21:28:40,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 16 remaining) [2023-08-26 21:28:40,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-26 21:28:40,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-26 21:28:40,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-26 21:28:40,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-26 21:28:40,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-26 21:28:40,552 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-26 21:28:40,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 21:28:40,553 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 21:28:40,557 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-26 21:28:40,557 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-26 21:28:40,559 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.08 09:28:40 BasicIcfg [2023-08-26 21:28:40,560 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-26 21:28:40,560 INFO L158 Benchmark]: Toolchain (without parser) took 7780.82ms. Allocated memory was 381.7MB in the beginning and 574.6MB in the end (delta: 192.9MB). Free memory was 356.9MB in the beginning and 285.1MB in the end (delta: 71.8MB). Peak memory consumption was 265.2MB. Max. memory is 16.0GB. [2023-08-26 21:28:40,560 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 381.7MB. Free memory is still 358.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 21:28:40,560 INFO L158 Benchmark]: CACSL2BoogieTranslator took 511.86ms. Allocated memory is still 381.7MB. Free memory was 356.4MB in the beginning and 335.9MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-26 21:28:40,561 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.70ms. Allocated memory is still 381.7MB. Free memory was 335.9MB in the beginning and 333.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-26 21:28:40,561 INFO L158 Benchmark]: Boogie Preprocessor took 37.64ms. Allocated memory is still 381.7MB. Free memory was 333.8MB in the beginning and 332.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-26 21:28:40,561 INFO L158 Benchmark]: RCFGBuilder took 462.00ms. Allocated memory is still 381.7MB. Free memory was 332.3MB in the beginning and 316.6MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-26 21:28:40,561 INFO L158 Benchmark]: TraceAbstraction took 6704.73ms. Allocated memory was 381.7MB in the beginning and 574.6MB in the end (delta: 192.9MB). Free memory was 315.6MB in the beginning and 285.1MB in the end (delta: 30.5MB). Peak memory consumption was 225.3MB. Max. memory is 16.0GB. [2023-08-26 21:28:40,562 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 381.7MB. Free memory is still 358.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 511.86ms. Allocated memory is still 381.7MB. Free memory was 356.4MB in the beginning and 335.9MB in the end (delta: 20.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 59.70ms. Allocated memory is still 381.7MB. Free memory was 335.9MB in the beginning and 333.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 37.64ms. Allocated memory is still 381.7MB. Free memory was 333.8MB in the beginning and 332.3MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 462.00ms. Allocated memory is still 381.7MB. Free memory was 332.3MB in the beginning and 316.6MB in the end (delta: 15.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 6704.73ms. Allocated memory was 381.7MB in the beginning and 574.6MB in the end (delta: 192.9MB). Free memory was 315.6MB in the beginning and 285.1MB in the end (delta: 30.5MB). Peak memory consumption was 225.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 100 PlacesBefore, 35 PlacesAfterwards, 93 TransitionsBefore, 26 TransitionsAfterwards, 2256 CoEnabledTransitionPairs, 6 FixpointIterations, 21 TrivialSequentialCompositions, 44 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 2 ChoiceCompositions, 83 TotalNumberOfCompositions, 6619 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3142, independent: 2963, independent conditional: 0, independent unconditional: 2963, dependent: 179, dependent conditional: 0, dependent unconditional: 179, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1219, independent: 1183, independent conditional: 0, independent unconditional: 1183, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3142, independent: 1780, independent conditional: 0, independent unconditional: 1780, dependent: 143, dependent conditional: 0, dependent unconditional: 143, unknown: 1219, unknown conditional: 0, unknown unconditional: 1219] , Statistics on independence cache: Total cache size (in pairs): 114, Positive cache size: 100, Positive conditional cache size: 0, Positive unconditional cache size: 100, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 737]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 737]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 752]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 752]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 124 locations, 16 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.6s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 2.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 412 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 412 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 815 IncrementalHoareTripleChecker+Invalid, 856 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 18 mSDtfsCounter, 815 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 59 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=666occurred in iteration=8, InterpolantAutomatonStates: 68, 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, 1.3s InterpolantComputationTime, 152 NumberOfCodeBlocks, 152 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 139 ConstructedInterpolants, 0 QuantifiedInterpolants, 521 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-26 21:28:40,578 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...