./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-lit/qw2004-2b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-lit/qw2004-2b.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:32:44,063 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:32:44,120 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:32:44,126 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:32:44,128 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:32:44,147 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:32:44,147 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:32:44,148 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:32:44,149 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:32:44,149 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:32:44,149 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:32:44,150 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:32:44,150 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:32:44,150 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:32:44,150 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:32:44,150 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:32:44,151 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:32:44,151 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:32:44,151 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:32:44,151 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:32:44,151 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:32:44,151 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:32:44,151 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:32:44,151 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:32:44,151 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:32:44,151 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:32:44,152 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:32:44,152 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:32:44,152 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:32:44,152 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:32:44,152 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:32:44,152 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:32:44,152 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:32:44,152 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:32:44,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:32:44,153 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:32:44,153 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:32:44,153 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:32:44,153 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:32:44,153 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:32:44,153 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:32:44,153 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:32:44,153 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:32:44,153 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:32:44,153 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:32:44,153 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f17f6182d2330561fe6717b6a061d0dded698483f9e32b37a3b36e1144855a29 [2025-03-17 19:32:44,373 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:32:44,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:32:44,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:32:44,384 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:32:44,384 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:32:44,385 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-lit/qw2004-2b.i [2025-03-17 19:32:45,557 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55434ffd2/bdd4bd8c086e4b188301d191dc464eaf/FLAG10784c5c7 [2025-03-17 19:32:45,852 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:32:45,854 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-lit/qw2004-2b.i [2025-03-17 19:32:45,873 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55434ffd2/bdd4bd8c086e4b188301d191dc464eaf/FLAG10784c5c7 [2025-03-17 19:32:46,130 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55434ffd2/bdd4bd8c086e4b188301d191dc464eaf [2025-03-17 19:32:46,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:32:46,133 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:32:46,134 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:32:46,134 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:32:46,137 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:32:46,138 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:32:46" (1/1) ... [2025-03-17 19:32:46,138 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60cd8bab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:32:46, skipping insertion in model container [2025-03-17 19:32:46,139 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:32:46" (1/1) ... [2025-03-17 19:32:46,162 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:32:46,430 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:32:46,440 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:32:46,468 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:32:46,496 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:32:46,496 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:32:46 WrapperNode [2025-03-17 19:32:46,497 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:32:46,498 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:32:46,498 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:32:46,498 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:32:46,503 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:32:46" (1/1) ... [2025-03-17 19:32:46,512 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:32:46" (1/1) ... [2025-03-17 19:32:46,528 INFO L138 Inliner]: procedures = 174, calls = 33, calls flagged for inlining = 10, calls inlined = 11, statements flattened = 122 [2025-03-17 19:32:46,530 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:32:46,530 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:32:46,530 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:32:46,530 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:32:46,535 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:32:46" (1/1) ... [2025-03-17 19:32:46,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:32:46" (1/1) ... [2025-03-17 19:32:46,537 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:32:46" (1/1) ... [2025-03-17 19:32:46,551 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-17 19:32:46,552 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:32:46" (1/1) ... [2025-03-17 19:32:46,552 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:32:46" (1/1) ... [2025-03-17 19:32:46,559 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:32:46" (1/1) ... [2025-03-17 19:32:46,560 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:32:46" (1/1) ... [2025-03-17 19:32:46,560 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:32:46" (1/1) ... [2025-03-17 19:32:46,561 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:32:46" (1/1) ... [2025-03-17 19:32:46,567 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:32:46,571 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:32:46,571 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:32:46,571 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:32:46,572 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:32:46" (1/1) ... [2025-03-17 19:32:46,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:32:46,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:32:46,598 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 19:32:46,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 19:32:46,622 INFO L130 BoogieDeclarations]: Found specification of procedure BCSP_PnpStop [2025-03-17 19:32:46,622 INFO L138 BoogieDeclarations]: Found implementation of procedure BCSP_PnpStop [2025-03-17 19:32:46,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 19:32:46,622 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:32:46,622 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:32:46,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 19:32:46,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:32:46,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:32:46,623 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:32:46,713 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:32:46,715 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:32:46,896 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:32:46,896 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:32:46,975 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:32:46,975 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:32:46,975 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:32:46 BoogieIcfgContainer [2025-03-17 19:32:46,975 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:32:46,977 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:32:46,977 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:32:46,980 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:32:46,980 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:32:46" (1/3) ... [2025-03-17 19:32:46,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db49911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:32:46, skipping insertion in model container [2025-03-17 19:32:46,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:32:46" (2/3) ... [2025-03-17 19:32:46,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db49911 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:32:46, skipping insertion in model container [2025-03-17 19:32:46,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:32:46" (3/3) ... [2025-03-17 19:32:46,982 INFO L128 eAbstractionObserver]: Analyzing ICFG qw2004-2b.i [2025-03-17 19:32:46,992 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:32:46,993 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG qw2004-2b.i that has 2 procedures, 38 locations, 1 initial locations, 0 loop locations, and 6 error locations. [2025-03-17 19:32:46,993 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:32:47,022 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 19:32:47,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 41 places, 41 transitions, 86 flow [2025-03-17 19:32:47,082 INFO L124 PetriNetUnfolderBase]: 4/40 cut-off events. [2025-03-17 19:32:47,086 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:32:47,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 40 events. 4/40 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 83 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2025-03-17 19:32:47,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 41 places, 41 transitions, 86 flow [2025-03-17 19:32:47,093 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 40 transitions, 83 flow [2025-03-17 19:32:47,101 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:32:47,110 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@66536823, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:32:47,111 INFO L334 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2025-03-17 19:32:47,114 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:32:47,114 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-03-17 19:32:47,114 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:32:47,115 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:32:47,115 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 19:32:47,115 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:32:47,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:32:47,119 INFO L85 PathProgramCache]: Analyzing trace with hash 637703552, now seen corresponding path program 1 times [2025-03-17 19:32:47,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:32:47,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852268034] [2025-03-17 19:32:47,125 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:32:47,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:32:47,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:32:47,211 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:32:47,212 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:32:47,212 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:32:47,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:32:47,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:32:47,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852268034] [2025-03-17 19:32:47,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852268034] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:32:47,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:32:47,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:32:47,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038874841] [2025-03-17 19:32:47,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:32:47,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:32:47,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:32:47,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:32:47,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:32:47,349 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2025-03-17 19:32:47,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 40 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:32:47,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:32:47,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2025-03-17 19:32:47,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:32:47,517 INFO L124 PetriNetUnfolderBase]: 211/474 cut-off events. [2025-03-17 19:32:47,518 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:32:47,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885 conditions, 474 events. 211/474 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2343 event pairs, 71 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 876. Up to 355 conditions per place. [2025-03-17 19:32:47,526 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 42 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2025-03-17 19:32:47,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 55 transitions, 205 flow [2025-03-17 19:32:47,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:32:47,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:32:47,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 80 transitions. [2025-03-17 19:32:47,538 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6504065040650406 [2025-03-17 19:32:47,539 INFO L175 Difference]: Start difference. First operand has 40 places, 40 transitions, 83 flow. Second operand 3 states and 80 transitions. [2025-03-17 19:32:47,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 55 transitions, 205 flow [2025-03-17 19:32:47,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 55 transitions, 204 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:32:47,548 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 114 flow [2025-03-17 19:32:47,551 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2025-03-17 19:32:47,554 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 2 predicate places. [2025-03-17 19:32:47,554 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 114 flow [2025-03-17 19:32:47,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:32:47,555 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:32:47,555 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:32:47,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:32:47,556 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:32:47,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:32:47,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1724738505, now seen corresponding path program 1 times [2025-03-17 19:32:47,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:32:47,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917707776] [2025-03-17 19:32:47,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:32:47,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:32:47,572 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:32:47,579 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:32:47,579 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:32:47,579 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:32:47,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:32:47,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:32:47,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917707776] [2025-03-17 19:32:47,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917707776] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:32:47,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:32:47,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:32:47,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529838107] [2025-03-17 19:32:47,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:32:47,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:32:47,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:32:47,631 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:32:47,631 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:32:47,631 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2025-03-17 19:32:47,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 114 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:32:47,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:32:47,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2025-03-17 19:32:47,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:32:47,801 INFO L124 PetriNetUnfolderBase]: 220/491 cut-off events. [2025-03-17 19:32:47,801 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2025-03-17 19:32:47,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1024 conditions, 491 events. 220/491 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2445 event pairs, 71 based on Foata normal form. 9/419 useless extension candidates. Maximal degree in co-relation 1013. Up to 354 conditions per place. [2025-03-17 19:32:47,804 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 53 selfloop transitions, 7 changer transitions 0/69 dead transitions. [2025-03-17 19:32:47,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 69 transitions, 297 flow [2025-03-17 19:32:47,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:32:47,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:32:47,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2025-03-17 19:32:47,806 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5560975609756098 [2025-03-17 19:32:47,806 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 114 flow. Second operand 5 states and 114 transitions. [2025-03-17 19:32:47,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 69 transitions, 297 flow [2025-03-17 19:32:47,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 69 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:32:47,808 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 154 flow [2025-03-17 19:32:47,808 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2025-03-17 19:32:47,808 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 8 predicate places. [2025-03-17 19:32:47,808 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 154 flow [2025-03-17 19:32:47,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:32:47,809 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:32:47,809 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:32:47,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 19:32:47,809 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:32:47,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:32:47,810 INFO L85 PathProgramCache]: Analyzing trace with hash -579782926, now seen corresponding path program 1 times [2025-03-17 19:32:47,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:32:47,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669306286] [2025-03-17 19:32:47,810 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:32:47,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:32:47,819 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:32:47,822 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:32:47,823 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:32:47,823 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:32:47,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:32:47,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:32:47,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669306286] [2025-03-17 19:32:47,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669306286] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:32:47,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:32:47,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:32:47,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683537611] [2025-03-17 19:32:47,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:32:47,889 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:32:47,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:32:47,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:32:47,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:32:47,893 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 41 [2025-03-17 19:32:47,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 154 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:32:47,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:32:47,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 41 [2025-03-17 19:32:47,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:32:48,021 INFO L124 PetriNetUnfolderBase]: 257/550 cut-off events. [2025-03-17 19:32:48,021 INFO L125 PetriNetUnfolderBase]: For 98/98 co-relation queries the response was YES. [2025-03-17 19:32:48,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1260 conditions, 550 events. 257/550 cut-off events. For 98/98 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2800 event pairs, 64 based on Foata normal form. 0/463 useless extension candidates. Maximal degree in co-relation 1245. Up to 435 conditions per place. [2025-03-17 19:32:48,024 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 63 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2025-03-17 19:32:48,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 74 transitions, 371 flow [2025-03-17 19:32:48,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:32:48,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:32:48,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 96 transitions. [2025-03-17 19:32:48,026 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5853658536585366 [2025-03-17 19:32:48,026 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 154 flow. Second operand 4 states and 96 transitions. [2025-03-17 19:32:48,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 74 transitions, 371 flow [2025-03-17 19:32:48,028 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 74 transitions, 356 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:32:48,030 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 166 flow [2025-03-17 19:32:48,030 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2025-03-17 19:32:48,031 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2025-03-17 19:32:48,032 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 166 flow [2025-03-17 19:32:48,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:32:48,032 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:32:48,032 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:32:48,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:32:48,032 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:32:48,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:32:48,033 INFO L85 PathProgramCache]: Analyzing trace with hash 5485498, now seen corresponding path program 2 times [2025-03-17 19:32:48,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:32:48,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786635478] [2025-03-17 19:32:48,033 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:32:48,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:32:48,045 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:32:48,052 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:32:48,052 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:32:48,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:32:48,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:32:48,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:32:48,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786635478] [2025-03-17 19:32:48,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786635478] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:32:48,113 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:32:48,113 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:32:48,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338344809] [2025-03-17 19:32:48,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:32:48,113 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:32:48,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:32:48,114 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:32:48,114 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:32:48,114 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2025-03-17 19:32:48,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 166 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:32:48,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:32:48,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2025-03-17 19:32:48,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:32:48,290 INFO L124 PetriNetUnfolderBase]: 276/621 cut-off events. [2025-03-17 19:32:48,290 INFO L125 PetriNetUnfolderBase]: For 166/166 co-relation queries the response was YES. [2025-03-17 19:32:48,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1399 conditions, 621 events. 276/621 cut-off events. For 166/166 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3316 event pairs, 20 based on Foata normal form. 0/536 useless extension candidates. Maximal degree in co-relation 1383. Up to 258 conditions per place. [2025-03-17 19:32:48,293 INFO L140 encePairwiseOnDemand]: 30/41 looper letters, 52 selfloop transitions, 9 changer transitions 23/93 dead transitions. [2025-03-17 19:32:48,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 93 transitions, 454 flow [2025-03-17 19:32:48,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:32:48,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:32:48,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 155 transitions. [2025-03-17 19:32:48,294 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5400696864111498 [2025-03-17 19:32:48,294 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 166 flow. Second operand 7 states and 155 transitions. [2025-03-17 19:32:48,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 93 transitions, 454 flow [2025-03-17 19:32:48,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 93 transitions, 449 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:32:48,296 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 172 flow [2025-03-17 19:32:48,296 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=172, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2025-03-17 19:32:48,297 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 16 predicate places. [2025-03-17 19:32:48,297 INFO L471 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 172 flow [2025-03-17 19:32:48,297 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:32:48,297 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:32:48,297 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:32:48,297 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:32:48,298 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:32:48,298 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:32:48,298 INFO L85 PathProgramCache]: Analyzing trace with hash 5485499, now seen corresponding path program 1 times [2025-03-17 19:32:48,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:32:48,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598944092] [2025-03-17 19:32:48,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:32:48,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:32:48,307 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:32:48,309 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:32:48,310 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:32:48,310 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:32:48,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:32:48,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:32:48,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598944092] [2025-03-17 19:32:48,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598944092] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:32:48,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:32:48,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:32:48,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105424423] [2025-03-17 19:32:48,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:32:48,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:32:48,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:32:48,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:32:48,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:32:48,362 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2025-03-17 19:32:48,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 172 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:32:48,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:32:48,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2025-03-17 19:32:48,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:32:48,462 INFO L124 PetriNetUnfolderBase]: 175/408 cut-off events. [2025-03-17 19:32:48,463 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2025-03-17 19:32:48,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1046 conditions, 408 events. 175/408 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1884 event pairs, 22 based on Foata normal form. 7/345 useless extension candidates. Maximal degree in co-relation 1028. Up to 271 conditions per place. [2025-03-17 19:32:48,465 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 46 selfloop transitions, 8 changer transitions 1/64 dead transitions. [2025-03-17 19:32:48,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 64 transitions, 326 flow [2025-03-17 19:32:48,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:32:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:32:48,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2025-03-17 19:32:48,466 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46747967479674796 [2025-03-17 19:32:48,466 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 172 flow. Second operand 6 states and 115 transitions. [2025-03-17 19:32:48,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 64 transitions, 326 flow [2025-03-17 19:32:48,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 64 transitions, 291 flow, removed 5 selfloop flow, removed 8 redundant places. [2025-03-17 19:32:48,468 INFO L231 Difference]: Finished difference. Result has 51 places, 43 transitions, 153 flow [2025-03-17 19:32:48,468 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=153, PETRI_PLACES=51, PETRI_TRANSITIONS=43} [2025-03-17 19:32:48,469 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 11 predicate places. [2025-03-17 19:32:48,469 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 43 transitions, 153 flow [2025-03-17 19:32:48,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:32:48,469 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:32:48,469 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:32:48,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:32:48,470 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:32:48,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:32:48,470 INFO L85 PathProgramCache]: Analyzing trace with hash -625312052, now seen corresponding path program 1 times [2025-03-17 19:32:48,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:32:48,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274927039] [2025-03-17 19:32:48,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:32:48,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:32:48,474 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:32:48,478 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:32:48,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:32:48,479 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:32:48,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:32:48,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:32:48,530 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274927039] [2025-03-17 19:32:48,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274927039] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:32:48,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:32:48,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:32:48,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001726638] [2025-03-17 19:32:48,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:32:48,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:32:48,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:32:48,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:32:48,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:32:48,532 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2025-03-17 19:32:48,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 43 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:32:48,532 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:32:48,532 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2025-03-17 19:32:48,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:32:48,666 INFO L124 PetriNetUnfolderBase]: 211/495 cut-off events. [2025-03-17 19:32:48,667 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2025-03-17 19:32:48,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1143 conditions, 495 events. 211/495 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2503 event pairs, 63 based on Foata normal form. 0/423 useless extension candidates. Maximal degree in co-relation 1128. Up to 238 conditions per place. [2025-03-17 19:32:48,670 INFO L140 encePairwiseOnDemand]: 31/41 looper letters, 59 selfloop transitions, 13 changer transitions 3/84 dead transitions. [2025-03-17 19:32:48,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 84 transitions, 419 flow [2025-03-17 19:32:48,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:32:48,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:32:48,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 148 transitions. [2025-03-17 19:32:48,672 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5156794425087108 [2025-03-17 19:32:48,672 INFO L175 Difference]: Start difference. First operand has 51 places, 43 transitions, 153 flow. Second operand 7 states and 148 transitions. [2025-03-17 19:32:48,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 84 transitions, 419 flow [2025-03-17 19:32:48,674 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 84 transitions, 405 flow, removed 1 selfloop flow, removed 3 redundant places. [2025-03-17 19:32:48,676 INFO L231 Difference]: Finished difference. Result has 57 places, 47 transitions, 213 flow [2025-03-17 19:32:48,677 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=213, PETRI_PLACES=57, PETRI_TRANSITIONS=47} [2025-03-17 19:32:48,677 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 17 predicate places. [2025-03-17 19:32:48,678 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 47 transitions, 213 flow [2025-03-17 19:32:48,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:32:48,678 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:32:48,678 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:32:48,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:32:48,678 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:32:48,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:32:48,679 INFO L85 PathProgramCache]: Analyzing trace with hash 5459519, now seen corresponding path program 1 times [2025-03-17 19:32:48,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:32:48,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248950226] [2025-03-17 19:32:48,679 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:32:48,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:32:48,684 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:32:48,686 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:32:48,690 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:32:48,691 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:32:48,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:32:48,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:32:48,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248950226] [2025-03-17 19:32:48,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248950226] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:32:48,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:32:48,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:32:48,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92549259] [2025-03-17 19:32:48,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:32:48,737 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:32:48,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:32:48,738 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:32:48,738 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:32:48,738 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2025-03-17 19:32:48,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 47 transitions, 213 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:32:48,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:32:48,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2025-03-17 19:32:48,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:32:48,864 INFO L124 PetriNetUnfolderBase]: 219/521 cut-off events. [2025-03-17 19:32:48,864 INFO L125 PetriNetUnfolderBase]: For 517/517 co-relation queries the response was YES. [2025-03-17 19:32:48,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1199 conditions, 521 events. 219/521 cut-off events. For 517/517 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2700 event pairs, 80 based on Foata normal form. 24/508 useless extension candidates. Maximal degree in co-relation 1182. Up to 296 conditions per place. [2025-03-17 19:32:48,866 INFO L140 encePairwiseOnDemand]: 33/41 looper letters, 48 selfloop transitions, 8 changer transitions 3/68 dead transitions. [2025-03-17 19:32:48,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 68 transitions, 365 flow [2025-03-17 19:32:48,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:32:48,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:32:48,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 121 transitions. [2025-03-17 19:32:48,868 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.491869918699187 [2025-03-17 19:32:48,868 INFO L175 Difference]: Start difference. First operand has 57 places, 47 transitions, 213 flow. Second operand 6 states and 121 transitions. [2025-03-17 19:32:48,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 68 transitions, 365 flow [2025-03-17 19:32:48,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 68 transitions, 337 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-03-17 19:32:48,870 INFO L231 Difference]: Finished difference. Result has 59 places, 43 transitions, 182 flow [2025-03-17 19:32:48,870 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=182, PETRI_PLACES=59, PETRI_TRANSITIONS=43} [2025-03-17 19:32:48,872 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 19 predicate places. [2025-03-17 19:32:48,872 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 43 transitions, 182 flow [2025-03-17 19:32:48,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:32:48,873 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:32:48,873 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:32:48,873 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:32:48,873 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:32:48,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:32:48,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1713851230, now seen corresponding path program 1 times [2025-03-17 19:32:48,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:32:48,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828550630] [2025-03-17 19:32:48,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:32:48,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:32:48,879 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:32:48,881 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:32:48,881 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:32:48,881 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:32:48,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:32:48,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:32:48,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828550630] [2025-03-17 19:32:48,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828550630] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:32:48,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:32:48,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:32:48,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482736402] [2025-03-17 19:32:48,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:32:48,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:32:48,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:32:48,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:32:48,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:32:48,914 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 41 [2025-03-17 19:32:48,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 43 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:32:48,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:32:48,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 41 [2025-03-17 19:32:48,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:32:48,996 INFO L124 PetriNetUnfolderBase]: 163/368 cut-off events. [2025-03-17 19:32:48,996 INFO L125 PetriNetUnfolderBase]: For 340/340 co-relation queries the response was YES. [2025-03-17 19:32:48,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 368 events. 163/368 cut-off events. For 340/340 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1693 event pairs, 24 based on Foata normal form. 0/360 useless extension candidates. Maximal degree in co-relation 929. Up to 222 conditions per place. [2025-03-17 19:32:48,998 INFO L140 encePairwiseOnDemand]: 37/41 looper letters, 48 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2025-03-17 19:32:48,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 60 transitions, 337 flow [2025-03-17 19:32:48,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:32:48,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:32:48,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2025-03-17 19:32:48,999 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4878048780487805 [2025-03-17 19:32:48,999 INFO L175 Difference]: Start difference. First operand has 59 places, 43 transitions, 182 flow. Second operand 4 states and 80 transitions. [2025-03-17 19:32:48,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 60 transitions, 337 flow [2025-03-17 19:32:49,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 60 transitions, 297 flow, removed 8 selfloop flow, removed 8 redundant places. [2025-03-17 19:32:49,001 INFO L231 Difference]: Finished difference. Result has 54 places, 42 transitions, 152 flow [2025-03-17 19:32:49,001 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=54, PETRI_TRANSITIONS=42} [2025-03-17 19:32:49,002 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2025-03-17 19:32:49,002 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 42 transitions, 152 flow [2025-03-17 19:32:49,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:32:49,002 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:32:49,002 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:32:49,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 19:32:49,002 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:32:49,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:32:49,003 INFO L85 PathProgramCache]: Analyzing trace with hash 759892712, now seen corresponding path program 1 times [2025-03-17 19:32:49,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:32:49,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182090157] [2025-03-17 19:32:49,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:32:49,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:32:49,010 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:32:49,014 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:32:49,015 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:32:49,015 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:32:49,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:32:49,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:32:49,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182090157] [2025-03-17 19:32:49,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182090157] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:32:49,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:32:49,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:32:49,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189421260] [2025-03-17 19:32:49,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:32:49,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:32:49,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:32:49,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:32:49,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:32:49,067 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2025-03-17 19:32:49,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 42 transitions, 152 flow. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:32:49,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:32:49,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2025-03-17 19:32:49,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:32:49,184 INFO L124 PetriNetUnfolderBase]: 132/334 cut-off events. [2025-03-17 19:32:49,184 INFO L125 PetriNetUnfolderBase]: For 143/143 co-relation queries the response was YES. [2025-03-17 19:32:49,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770 conditions, 334 events. 132/334 cut-off events. For 143/143 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1520 event pairs, 49 based on Foata normal form. 9/330 useless extension candidates. Maximal degree in co-relation 752. Up to 139 conditions per place. [2025-03-17 19:32:49,186 INFO L140 encePairwiseOnDemand]: 32/41 looper letters, 25 selfloop transitions, 3 changer transitions 41/75 dead transitions. [2025-03-17 19:32:49,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 75 transitions, 354 flow [2025-03-17 19:32:49,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 19:32:49,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 19:32:49,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 149 transitions. [2025-03-17 19:32:49,187 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45426829268292684 [2025-03-17 19:32:49,187 INFO L175 Difference]: Start difference. First operand has 54 places, 42 transitions, 152 flow. Second operand 8 states and 149 transitions. [2025-03-17 19:32:49,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 75 transitions, 354 flow [2025-03-17 19:32:49,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 75 transitions, 331 flow, removed 0 selfloop flow, removed 6 redundant places. [2025-03-17 19:32:49,188 INFO L231 Difference]: Finished difference. Result has 54 places, 28 transitions, 87 flow [2025-03-17 19:32:49,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=87, PETRI_PLACES=54, PETRI_TRANSITIONS=28} [2025-03-17 19:32:49,189 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 14 predicate places. [2025-03-17 19:32:49,189 INFO L471 AbstractCegarLoop]: Abstraction has has 54 places, 28 transitions, 87 flow [2025-03-17 19:32:49,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:32:49,189 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:32:49,189 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:32:49,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 19:32:49,189 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:32:49,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:32:49,190 INFO L85 PathProgramCache]: Analyzing trace with hash 680631876, now seen corresponding path program 2 times [2025-03-17 19:32:49,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:32:49,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069750209] [2025-03-17 19:32:49,190 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:32:49,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:32:49,195 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-17 19:32:49,198 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:32:49,198 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:32:49,198 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:32:49,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:32:49,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:32:49,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069750209] [2025-03-17 19:32:49,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069750209] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:32:49,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883254648] [2025-03-17 19:32:49,246 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:32:49,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:32:49,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:32:49,248 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:32:49,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 19:32:49,285 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-17 19:32:49,296 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:32:49,296 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-17 19:32:49,296 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:32:49,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:32:49,299 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:32:49,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:32:49,355 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:32:49,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:32:49,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883254648] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:32:49,394 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:32:49,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-03-17 19:32:49,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928206086] [2025-03-17 19:32:49,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:32:49,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 19:32:49,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:32:49,396 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 19:32:49,396 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2025-03-17 19:32:49,396 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2025-03-17 19:32:49,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 28 transitions, 87 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:32:49,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:32:49,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2025-03-17 19:32:49,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:32:49,484 INFO L124 PetriNetUnfolderBase]: 66/169 cut-off events. [2025-03-17 19:32:49,484 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2025-03-17 19:32:49,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 169 events. 66/169 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 556 event pairs, 2 based on Foata normal form. 7/173 useless extension candidates. Maximal degree in co-relation 363. Up to 84 conditions per place. [2025-03-17 19:32:49,485 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 34 selfloop transitions, 5 changer transitions 1/46 dead transitions. [2025-03-17 19:32:49,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 46 transitions, 199 flow [2025-03-17 19:32:49,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:32:49,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:32:49,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 111 transitions. [2025-03-17 19:32:49,487 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3867595818815331 [2025-03-17 19:32:49,487 INFO L175 Difference]: Start difference. First operand has 54 places, 28 transitions, 87 flow. Second operand 7 states and 111 transitions. [2025-03-17 19:32:49,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 46 transitions, 199 flow [2025-03-17 19:32:49,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 46 transitions, 182 flow, removed 1 selfloop flow, removed 7 redundant places. [2025-03-17 19:32:49,489 INFO L231 Difference]: Finished difference. Result has 40 places, 27 transitions, 74 flow [2025-03-17 19:32:49,489 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=74, PETRI_PLACES=40, PETRI_TRANSITIONS=27} [2025-03-17 19:32:49,490 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, 0 predicate places. [2025-03-17 19:32:49,490 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 74 flow [2025-03-17 19:32:49,490 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:32:49,490 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:32:49,490 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:32:49,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 19:32:49,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-17 19:32:49,695 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-17 19:32:49,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:32:49,696 INFO L85 PathProgramCache]: Analyzing trace with hash 476066713, now seen corresponding path program 1 times [2025-03-17 19:32:49,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:32:49,696 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844288684] [2025-03-17 19:32:49,696 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:32:49,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:32:49,700 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:32:49,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:32:49,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:32:49,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:32:49,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:32:49,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:32:49,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844288684] [2025-03-17 19:32:49,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844288684] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:32:49,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [662790227] [2025-03-17 19:32:49,752 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:32:49,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:32:49,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:32:49,754 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:32:49,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 19:32:49,789 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:32:49,798 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:32:49,798 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:32:49,799 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:32:49,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:32:49,800 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:32:49,837 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:32:49,838 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:32:49,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:32:49,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [662790227] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:32:49,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:32:49,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2025-03-17 19:32:49,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94918738] [2025-03-17 19:32:49,865 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:32:49,866 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 19:32:49,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:32:49,866 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 19:32:49,866 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2025-03-17 19:32:49,866 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 41 [2025-03-17 19:32:49,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 74 flow. Second operand has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:32:49,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:32:49,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 41 [2025-03-17 19:32:49,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:32:49,938 INFO L124 PetriNetUnfolderBase]: 59/155 cut-off events. [2025-03-17 19:32:49,939 INFO L125 PetriNetUnfolderBase]: For 18/18 co-relation queries the response was YES. [2025-03-17 19:32:49,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 328 conditions, 155 events. 59/155 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 507 event pairs, 2 based on Foata normal form. 7/159 useless extension candidates. Maximal degree in co-relation 317. Up to 70 conditions per place. [2025-03-17 19:32:49,939 INFO L140 encePairwiseOnDemand]: 35/41 looper letters, 0 selfloop transitions, 0 changer transitions 45/45 dead transitions. [2025-03-17 19:32:49,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 45 transitions, 186 flow [2025-03-17 19:32:49,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:32:49,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:32:49,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2025-03-17 19:32:49,940 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3832752613240418 [2025-03-17 19:32:49,940 INFO L175 Difference]: Start difference. First operand has 40 places, 27 transitions, 74 flow. Second operand 7 states and 110 transitions. [2025-03-17 19:32:49,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 45 transitions, 186 flow [2025-03-17 19:32:49,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 177 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 19:32:49,941 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2025-03-17 19:32:49,941 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=41, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2025-03-17 19:32:49,942 INFO L279 CegarLoopForPetriNet]: 40 programPoint places, -2 predicate places. [2025-03-17 19:32:49,942 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2025-03-17 19:32:49,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.333333333333334) internal successors, (120), 9 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:32:49,945 INFO L782 garLoopResultBuilder]: Registering result SAFE for location BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 9 remaining) [2025-03-17 19:32:49,945 INFO L782 garLoopResultBuilder]: Registering result SAFE for location BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 9 remaining) [2025-03-17 19:32:49,945 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 9 remaining) [2025-03-17 19:32:49,945 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 9 remaining) [2025-03-17 19:32:49,946 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 9 remaining) [2025-03-17 19:32:49,946 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 9 remaining) [2025-03-17 19:32:49,946 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2025-03-17 19:32:49,946 INFO L782 garLoopResultBuilder]: Registering result SAFE for location BCSP_PnpStopErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 9 remaining) [2025-03-17 19:32:49,947 INFO L782 garLoopResultBuilder]: Registering result SAFE for location BCSP_PnpStopErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 9 remaining) [2025-03-17 19:32:49,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-17 19:32:50,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-17 19:32:50,148 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:32:50,152 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 19:32:50,152 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 19:32:50,155 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 07:32:50 BasicIcfg [2025-03-17 19:32:50,155 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 19:32:50,155 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 19:32:50,155 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 19:32:50,156 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 19:32:50,156 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:32:46" (3/4) ... [2025-03-17 19:32:50,157 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-17 19:32:50,159 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure BCSP_PnpStop [2025-03-17 19:32:50,161 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2025-03-17 19:32:50,161 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-03-17 19:32:50,161 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-03-17 19:32:50,161 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-17 19:32:50,214 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 19:32:50,214 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 19:32:50,214 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 19:32:50,215 INFO L158 Benchmark]: Toolchain (without parser) took 4081.62ms. Allocated memory is still 167.8MB. Free memory was 131.1MB in the beginning and 84.6MB in the end (delta: 46.5MB). Peak memory consumption was 46.9MB. Max. memory is 16.1GB. [2025-03-17 19:32:50,215 INFO L158 Benchmark]: CDTParser took 0.94ms. Allocated memory is still 201.3MB. Free memory is still 125.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:32:50,215 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.79ms. Allocated memory is still 167.8MB. Free memory was 131.1MB in the beginning and 111.5MB in the end (delta: 19.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 19:32:50,215 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.22ms. Allocated memory is still 167.8MB. Free memory was 111.5MB in the beginning and 109.8MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:32:50,215 INFO L158 Benchmark]: Boogie Preprocessor took 40.14ms. Allocated memory is still 167.8MB. Free memory was 109.8MB in the beginning and 108.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:32:50,219 INFO L158 Benchmark]: IcfgBuilder took 404.49ms. Allocated memory is still 167.8MB. Free memory was 108.4MB in the beginning and 81.1MB in the end (delta: 27.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-17 19:32:50,219 INFO L158 Benchmark]: TraceAbstraction took 3178.13ms. Allocated memory is still 167.8MB. Free memory was 80.6MB in the beginning and 89.8MB in the end (delta: -9.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:32:50,219 INFO L158 Benchmark]: Witness Printer took 58.99ms. Allocated memory is still 167.8MB. Free memory was 89.8MB in the beginning and 84.6MB in the end (delta: 5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:32:50,220 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.94ms. Allocated memory is still 201.3MB. Free memory is still 125.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 362.79ms. Allocated memory is still 167.8MB. Free memory was 131.1MB in the beginning and 111.5MB in the end (delta: 19.6MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.22ms. Allocated memory is still 167.8MB. Free memory was 111.5MB in the beginning and 109.8MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.14ms. Allocated memory is still 167.8MB. Free memory was 109.8MB in the beginning and 108.4MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 404.49ms. Allocated memory is still 167.8MB. Free memory was 108.4MB in the beginning and 81.1MB in the end (delta: 27.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 3178.13ms. Allocated memory is still 167.8MB. Free memory was 80.6MB in the beginning and 89.8MB in the end (delta: -9.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 58.99ms. Allocated memory is still 167.8MB. Free memory was 89.8MB in the beginning and 84.6MB in the end (delta: 5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 719]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 719]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 712]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 712]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 719]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 719]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 54 locations, 57 edges, 9 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: 3.1s, OverallIterations: 11, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 426 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 424 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1339 IncrementalHoareTripleChecker+Invalid, 1363 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 3 mSDtfsCounter, 1339 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 121 GetRequests, 61 SyntacticMatches, 6 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=213occurred in iteration=6, InterpolantAutomatonStates: 64, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 195 ConstructedInterpolants, 0 QuantifiedInterpolants, 529 SizeOfPredicates, 4 NumberOfNonLiveVariables, 179 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 15 InterpolantComputations, 9 PerfectInterpolantSequences, 0/6 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-17 19:32:50,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE