./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-theta/unwind2-nondet.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 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-theta/unwind2-nondet.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 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:32:07,999 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:32:08,057 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:32:08,062 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:32:08,065 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:32:08,081 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:32:08,085 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:32:08,085 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:32:08,085 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:32:08,085 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:32:08,085 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:32:08,085 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:32:08,085 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:32:08,085 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:32:08,085 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:32:08,086 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:32:08,086 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:32:08,086 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:32:08,086 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:32:08,086 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:32:08,086 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:32:08,086 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:32:08,086 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:32:08,086 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:32:08,086 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:32:08,086 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:32:08,086 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:32:08,086 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:32:08,086 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:32:08,086 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:32:08,086 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:32:08,086 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:32:08,086 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:32:08,087 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:32:08,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:32:08,087 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:32:08,087 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:32:08,087 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:32:08,087 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:32:08,087 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:32:08,087 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:32:08,087 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:32:08,087 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:32:08,087 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:32:08,087 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:32:08,087 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 -> 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d [2025-03-04 15:32:08,339 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:32:08,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:32:08,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:32:08,350 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:32:08,350 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:32:08,351 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind2-nondet.i [2025-03-04 15:32:09,462 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/589d0048e/b6723bb332774c349fd51b407a9f2918/FLAG3bffa1d7d [2025-03-04 15:32:09,713 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:32:09,713 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-nondet.i [2025-03-04 15:32:09,725 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/589d0048e/b6723bb332774c349fd51b407a9f2918/FLAG3bffa1d7d [2025-03-04 15:32:09,735 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/589d0048e/b6723bb332774c349fd51b407a9f2918 [2025-03-04 15:32:09,737 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:32:09,738 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:32:09,739 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:32:09,739 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:32:09,742 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:32:09,742 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:32:09" (1/1) ... [2025-03-04 15:32:09,743 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ea24f20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:32:09, skipping insertion in model container [2025-03-04 15:32:09,743 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:32:09" (1/1) ... [2025-03-04 15:32:09,773 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:32:10,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:32:10,036 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:32:10,078 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:32:10,107 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:32:10,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:32:10 WrapperNode [2025-03-04 15:32:10,108 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:32:10,108 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:32:10,108 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:32:10,108 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:32:10,112 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:32:10" (1/1) ... [2025-03-04 15:32:10,120 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:32:10" (1/1) ... [2025-03-04 15:32:10,136 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 88 [2025-03-04 15:32:10,137 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:32:10,138 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:32:10,138 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:32:10,138 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:32:10,143 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:32:10" (1/1) ... [2025-03-04 15:32:10,143 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:32:10" (1/1) ... [2025-03-04 15:32:10,145 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:32:10" (1/1) ... [2025-03-04 15:32:10,152 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]. [2025-03-04 15:32:10,152 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:32:10" (1/1) ... [2025-03-04 15:32:10,152 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:32:10" (1/1) ... [2025-03-04 15:32:10,158 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:32:10" (1/1) ... [2025-03-04 15:32:10,159 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:32:10" (1/1) ... [2025-03-04 15:32:10,160 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:32:10" (1/1) ... [2025-03-04 15:32:10,160 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:32:10" (1/1) ... [2025-03-04 15:32:10,161 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:32:10,162 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:32:10,163 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:32:10,163 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:32:10,163 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:32:10" (1/1) ... [2025-03-04 15:32:10,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:32:10,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:32:10,211 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) [2025-03-04 15:32:10,213 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 [2025-03-04 15:32:10,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:32:10,228 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-03-04 15:32:10,228 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-03-04 15:32:10,228 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-03-04 15:32:10,228 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-03-04 15:32:10,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:32:10,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:32:10,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:32:10,230 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:32:10,331 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:32:10,332 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:32:10,472 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:32:10,472 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:32:10,565 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:32:10,565 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:32:10,565 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:32:10 BoogieIcfgContainer [2025-03-04 15:32:10,565 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:32:10,568 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:32:10,568 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:32:10,571 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:32:10,571 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:32:09" (1/3) ... [2025-03-04 15:32:10,573 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d313ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:32:10, skipping insertion in model container [2025-03-04 15:32:10,573 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:32:10" (2/3) ... [2025-03-04 15:32:10,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20d313ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:32:10, skipping insertion in model container [2025-03-04 15:32:10,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:32:10" (3/3) ... [2025-03-04 15:32:10,575 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind2-nondet.i [2025-03-04 15:32:10,585 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:32:10,586 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind2-nondet.i that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 6 error locations. [2025-03-04 15:32:10,586 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:32:10,627 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-04 15:32:10,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2025-03-04 15:32:10,672 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2025-03-04 15:32:10,675 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 15:32:10,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-03-04 15:32:10,677 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2025-03-04 15:32:10,681 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 28 transitions, 65 flow [2025-03-04 15:32:10,688 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:32:10,696 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;@2a56ccdc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:32:10,696 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2025-03-04 15:32:10,700 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:32:10,700 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-03-04 15:32:10,700 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:32:10,700 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:32:10,703 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-04 15:32:10,704 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-04 15:32:10,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:32:10,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1426146900, now seen corresponding path program 1 times [2025-03-04 15:32:10,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:32:10,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574365005] [2025-03-04 15:32:10,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:32:10,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:32:10,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:32:10,788 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:32:10,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:32:10,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:32:10,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:32:10,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:32:10,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574365005] [2025-03-04 15:32:10,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574365005] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:32:10,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:32:10,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 15:32:10,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802203745] [2025-03-04 15:32:10,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:32:10,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:32:10,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:32:10,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:32:10,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:32:10,901 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-04 15:32:10,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:10,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:32:10,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-04 15:32:10,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:32:10,986 INFO L124 PetriNetUnfolderBase]: 165/355 cut-off events. [2025-03-04 15:32:10,986 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-03-04 15:32:10,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 355 events. 165/355 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1567 event pairs, 134 based on Foata normal form. 13/295 useless extension candidates. Maximal degree in co-relation 610. Up to 282 conditions per place. [2025-03-04 15:32:10,990 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 19 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2025-03-04 15:32:10,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 103 flow [2025-03-04 15:32:10,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:32:10,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:32:10,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2025-03-04 15:32:10,998 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-03-04 15:32:10,999 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 3 states and 48 transitions. [2025-03-04 15:32:10,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 103 flow [2025-03-04 15:32:11,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 98 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:32:11,003 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 60 flow [2025-03-04 15:32:11,004 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2025-03-04 15:32:11,006 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2025-03-04 15:32:11,006 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 60 flow [2025-03-04 15:32:11,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:11,007 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:32:11,007 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:32:11,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:32:11,007 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-04 15:32:11,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:32:11,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1249537315, now seen corresponding path program 1 times [2025-03-04 15:32:11,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:32:11,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190805429] [2025-03-04 15:32:11,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:32:11,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:32:11,014 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:32:11,019 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:32:11,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:32:11,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:32:11,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:32:11,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:32:11,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190805429] [2025-03-04 15:32:11,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190805429] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:32:11,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:32:11,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:32:11,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643969432] [2025-03-04 15:32:11,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:32:11,111 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:32:11,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:32:11,112 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:32:11,112 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:32:11,118 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-04 15:32:11,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:11,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:32:11,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-04 15:32:11,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:32:11,268 INFO L124 PetriNetUnfolderBase]: 268/541 cut-off events. [2025-03-04 15:32:11,268 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-04 15:32:11,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 541 events. 268/541 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2452 event pairs, 159 based on Foata normal form. 16/465 useless extension candidates. Maximal degree in co-relation 1021. Up to 329 conditions per place. [2025-03-04 15:32:11,272 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 42 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2025-03-04 15:32:11,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 51 transitions, 203 flow [2025-03-04 15:32:11,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:32:11,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:32:11,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2025-03-04 15:32:11,274 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6484375 [2025-03-04 15:32:11,274 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 60 flow. Second operand 4 states and 83 transitions. [2025-03-04 15:32:11,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 51 transitions, 203 flow [2025-03-04 15:32:11,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 51 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:32:11,276 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 81 flow [2025-03-04 15:32:11,276 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=81, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2025-03-04 15:32:11,276 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2025-03-04 15:32:11,276 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 81 flow [2025-03-04 15:32:11,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:11,277 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:32:11,277 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:32:11,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 15:32:11,279 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-04 15:32:11,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:32:11,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1260880736, now seen corresponding path program 1 times [2025-03-04 15:32:11,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:32:11,280 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726377688] [2025-03-04 15:32:11,280 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:32:11,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:32:11,289 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:32:11,292 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:32:11,292 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:32:11,292 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:32:11,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:32:11,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:32:11,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726377688] [2025-03-04 15:32:11,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726377688] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:32:11,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:32:11,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 15:32:11,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166671507] [2025-03-04 15:32:11,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:32:11,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:32:11,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:32:11,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:32:11,315 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:32:11,318 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-04 15:32:11,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:11,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:32:11,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-04 15:32:11,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:32:11,369 INFO L124 PetriNetUnfolderBase]: 222/483 cut-off events. [2025-03-04 15:32:11,370 INFO L125 PetriNetUnfolderBase]: For 131/139 co-relation queries the response was YES. [2025-03-04 15:32:11,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 483 events. 222/483 cut-off events. For 131/139 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2249 event pairs, 186 based on Foata normal form. 0/437 useless extension candidates. Maximal degree in co-relation 1013. Up to 381 conditions per place. [2025-03-04 15:32:11,373 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 20 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2025-03-04 15:32:11,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 121 flow [2025-03-04 15:32:11,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:32:11,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:32:11,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2025-03-04 15:32:11,375 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2025-03-04 15:32:11,376 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 81 flow. Second operand 3 states and 47 transitions. [2025-03-04 15:32:11,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 121 flow [2025-03-04 15:32:11,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 119 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:32:11,377 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 79 flow [2025-03-04 15:32:11,377 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2025-03-04 15:32:11,378 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2025-03-04 15:32:11,378 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 79 flow [2025-03-04 15:32:11,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:11,378 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:32:11,378 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:32:11,378 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 15:32:11,378 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-04 15:32:11,378 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:32:11,379 INFO L85 PathProgramCache]: Analyzing trace with hash -484397298, now seen corresponding path program 1 times [2025-03-04 15:32:11,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:32:11,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62920185] [2025-03-04 15:32:11,379 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:32:11,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:32:11,384 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 15:32:11,387 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 15:32:11,387 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:32:11,387 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:32:11,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:32:11,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:32:11,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62920185] [2025-03-04 15:32:11,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62920185] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:32:11,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073809276] [2025-03-04 15:32:11,461 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:32:11,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:32:11,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:32:11,464 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) [2025-03-04 15:32:11,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 15:32:11,503 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 15:32:11,511 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 15:32:11,511 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:32:11,511 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:32:11,512 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:32:11,514 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:32:11,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:32:11,550 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:32:11,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073809276] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:32:11,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:32:11,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-04 15:32:11,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299288930] [2025-03-04 15:32:11,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:32:11,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:32:11,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:32:11,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:32:11,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:32:11,559 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-04 15:32:11,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 79 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:11,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:32:11,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-04 15:32:11,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:32:11,727 INFO L124 PetriNetUnfolderBase]: 245/473 cut-off events. [2025-03-04 15:32:11,728 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2025-03-04 15:32:11,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 473 events. 245/473 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2039 event pairs, 48 based on Foata normal form. 16/442 useless extension candidates. Maximal degree in co-relation 1024. Up to 108 conditions per place. [2025-03-04 15:32:11,730 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 59 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2025-03-04 15:32:11,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 69 transitions, 296 flow [2025-03-04 15:32:11,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:32:11,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:32:11,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2025-03-04 15:32:11,731 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2025-03-04 15:32:11,731 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 79 flow. Second operand 6 states and 119 transitions. [2025-03-04 15:32:11,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 69 transitions, 296 flow [2025-03-04 15:32:11,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 69 transitions, 295 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:32:11,732 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 84 flow [2025-03-04 15:32:11,732 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=33, 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=6, PETRI_FLOW=84, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2025-03-04 15:32:11,732 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2025-03-04 15:32:11,732 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 84 flow [2025-03-04 15:32:11,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:11,733 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:32:11,733 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:32:11,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-04 15:32:11,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:32:11,933 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-04 15:32:11,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:32:11,934 INFO L85 PathProgramCache]: Analyzing trace with hash -2131414151, now seen corresponding path program 1 times [2025-03-04 15:32:11,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:32:11,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116298231] [2025-03-04 15:32:11,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:32:11,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:32:11,938 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:32:11,940 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:32:11,941 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:32:11,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:32:11,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:32:11,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:32:11,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116298231] [2025-03-04 15:32:11,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116298231] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:32:11,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1528047602] [2025-03-04 15:32:11,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:32:11,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:32:11,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:32:11,995 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) [2025-03-04 15:32:11,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 15:32:12,030 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:32:12,040 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:32:12,040 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:32:12,040 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:32:12,041 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:32:12,041 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:32:12,068 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:32:12,068 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:32:12,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:32:12,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1528047602] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:32:12,105 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:32:12,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-04 15:32:12,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113651294] [2025-03-04 15:32:12,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:32:12,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 15:32:12,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:32:12,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 15:32:12,107 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-04 15:32:12,118 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-04 15:32:12,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 84 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:12,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:32:12,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-04 15:32:12,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:32:12,344 INFO L124 PetriNetUnfolderBase]: 473/921 cut-off events. [2025-03-04 15:32:12,344 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2025-03-04 15:32:12,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2164 conditions, 921 events. 473/921 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4221 event pairs, 138 based on Foata normal form. 48/914 useless extension candidates. Maximal degree in co-relation 2155. Up to 290 conditions per place. [2025-03-04 15:32:12,348 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 107 selfloop transitions, 9 changer transitions 0/121 dead transitions. [2025-03-04 15:32:12,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 121 transitions, 548 flow [2025-03-04 15:32:12,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:32:12,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:32:12,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2025-03-04 15:32:12,349 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.653125 [2025-03-04 15:32:12,349 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 84 flow. Second operand 10 states and 209 transitions. [2025-03-04 15:32:12,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 121 transitions, 548 flow [2025-03-04 15:32:12,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 121 transitions, 533 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-03-04 15:32:12,353 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 139 flow [2025-03-04 15:32:12,353 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=75, 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=10, PETRI_FLOW=139, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2025-03-04 15:32:12,354 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2025-03-04 15:32:12,354 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 139 flow [2025-03-04 15:32:12,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:12,354 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:32:12,354 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:32:12,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-04 15:32:12,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:32:12,555 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-04 15:32:12,555 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:32:12,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1703320421, now seen corresponding path program 1 times [2025-03-04 15:32:12,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:32:12,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100280566] [2025-03-04 15:32:12,555 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:32:12,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:32:12,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:32:12,563 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:32:12,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:32:12,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:32:12,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:32:12,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:32:12,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100280566] [2025-03-04 15:32:12,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100280566] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:32:12,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:32:12,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:32:12,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74250658] [2025-03-04 15:32:12,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:32:12,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:32:12,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:32:12,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:32:12,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:32:12,597 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-04 15:32:12,597 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 139 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) [2025-03-04 15:32:12,597 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:32:12,597 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-04 15:32:12,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:32:12,749 INFO L124 PetriNetUnfolderBase]: 745/1441 cut-off events. [2025-03-04 15:32:12,749 INFO L125 PetriNetUnfolderBase]: For 1342/1346 co-relation queries the response was YES. [2025-03-04 15:32:12,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3621 conditions, 1441 events. 745/1441 cut-off events. For 1342/1346 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7294 event pairs, 507 based on Foata normal form. 41/1353 useless extension candidates. Maximal degree in co-relation 3610. Up to 975 conditions per place. [2025-03-04 15:32:12,757 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 61 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2025-03-04 15:32:12,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 457 flow [2025-03-04 15:32:12,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:32:12,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:32:12,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2025-03-04 15:32:12,758 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609375 [2025-03-04 15:32:12,759 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 139 flow. Second operand 4 states and 78 transitions. [2025-03-04 15:32:12,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 457 flow [2025-03-04 15:32:12,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 68 transitions, 427 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-03-04 15:32:12,762 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 151 flow [2025-03-04 15:32:12,764 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2025-03-04 15:32:12,765 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2025-03-04 15:32:12,766 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 151 flow [2025-03-04 15:32:12,766 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) [2025-03-04 15:32:12,766 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:32:12,766 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:32:12,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 15:32:12,766 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-04 15:32:12,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:32:12,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1419727885, now seen corresponding path program 1 times [2025-03-04 15:32:12,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:32:12,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613126615] [2025-03-04 15:32:12,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:32:12,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:32:12,774 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 15:32:12,779 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 15:32:12,779 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:32:12,779 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:32:12,830 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:32:12,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:32:12,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613126615] [2025-03-04 15:32:12,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613126615] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:32:12,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533687710] [2025-03-04 15:32:12,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:32:12,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:32:12,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:32:12,832 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:32:12,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 15:32:12,866 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 15:32:12,874 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 15:32:12,875 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:32:12,875 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:32:12,875 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:32:12,876 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:32:12,897 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:32:12,897 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:32:12,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533687710] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:32:12,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:32:12,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-04 15:32:12,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021670127] [2025-03-04 15:32:12,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:32:12,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:32:12,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:32:12,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:32:12,899 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:32:12,909 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-04 15:32:12,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 151 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:12,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:32:12,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-04 15:32:12,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:32:13,073 INFO L124 PetriNetUnfolderBase]: 686/1318 cut-off events. [2025-03-04 15:32:13,073 INFO L125 PetriNetUnfolderBase]: For 1093/1105 co-relation queries the response was YES. [2025-03-04 15:32:13,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3509 conditions, 1318 events. 686/1318 cut-off events. For 1093/1105 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6546 event pairs, 222 based on Foata normal form. 41/1312 useless extension candidates. Maximal degree in co-relation 3495. Up to 434 conditions per place. [2025-03-04 15:32:13,078 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 90 selfloop transitions, 5 changer transitions 0/99 dead transitions. [2025-03-04 15:32:13,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 99 transitions, 667 flow [2025-03-04 15:32:13,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:32:13,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:32:13,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2025-03-04 15:32:13,081 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2025-03-04 15:32:13,081 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 151 flow. Second operand 6 states and 110 transitions. [2025-03-04 15:32:13,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 99 transitions, 667 flow [2025-03-04 15:32:13,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 99 transitions, 665 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:32:13,086 INFO L231 Difference]: Finished difference. Result has 52 places, 34 transitions, 155 flow [2025-03-04 15:32:13,087 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=155, PETRI_PLACES=52, PETRI_TRANSITIONS=34} [2025-03-04 15:32:13,087 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2025-03-04 15:32:13,087 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 34 transitions, 155 flow [2025-03-04 15:32:13,087 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:13,087 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:32:13,087 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:32:13,094 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 15:32:13,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:32:13,288 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-04 15:32:13,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:32:13,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1061891263, now seen corresponding path program 1 times [2025-03-04 15:32:13,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:32:13,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515414845] [2025-03-04 15:32:13,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:32:13,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:32:13,297 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 15:32:13,299 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 15:32:13,299 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:32:13,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:32:13,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:32:13,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:32:13,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515414845] [2025-03-04 15:32:13,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515414845] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:32:13,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [218774696] [2025-03-04 15:32:13,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:32:13,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:32:13,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:32:13,347 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:32:13,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 15:32:13,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 15:32:13,388 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 15:32:13,388 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:32:13,388 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:32:13,388 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:32:13,389 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:32:13,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:32:13,408 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:32:13,436 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:32:13,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [218774696] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:32:13,437 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:32:13,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-04 15:32:13,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149463212] [2025-03-04 15:32:13,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:32:13,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 15:32:13,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:32:13,437 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 15:32:13,437 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-04 15:32:13,453 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-04 15:32:13,453 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 34 transitions, 155 flow. Second operand has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:13,453 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:32:13,453 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-04 15:32:13,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:32:13,766 INFO L124 PetriNetUnfolderBase]: 1217/2349 cut-off events. [2025-03-04 15:32:13,766 INFO L125 PetriNetUnfolderBase]: For 2670/2694 co-relation queries the response was YES. [2025-03-04 15:32:13,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6554 conditions, 2349 events. 1217/2349 cut-off events. For 2670/2694 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 12722 event pairs, 450 based on Foata normal form. 123/2466 useless extension candidates. Maximal degree in co-relation 6540. Up to 875 conditions per place. [2025-03-04 15:32:13,779 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 159 selfloop transitions, 9 changer transitions 0/172 dead transitions. [2025-03-04 15:32:13,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 172 transitions, 1191 flow [2025-03-04 15:32:13,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:32:13,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:32:13,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2025-03-04 15:32:13,780 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.590625 [2025-03-04 15:32:13,780 INFO L175 Difference]: Start difference. First operand has 52 places, 34 transitions, 155 flow. Second operand 10 states and 189 transitions. [2025-03-04 15:32:13,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 172 transitions, 1191 flow [2025-03-04 15:32:13,785 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 172 transitions, 1176 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-03-04 15:32:13,787 INFO L231 Difference]: Finished difference. Result has 60 places, 40 transitions, 210 flow [2025-03-04 15:32:13,787 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=210, PETRI_PLACES=60, PETRI_TRANSITIONS=40} [2025-03-04 15:32:13,789 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2025-03-04 15:32:13,789 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 40 transitions, 210 flow [2025-03-04 15:32:13,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:13,789 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:32:13,790 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2025-03-04 15:32:13,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 15:32:13,990 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:32:13,991 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-04 15:32:13,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:32:13,991 INFO L85 PathProgramCache]: Analyzing trace with hash -2104877878, now seen corresponding path program 2 times [2025-03-04 15:32:13,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:32:13,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299741317] [2025-03-04 15:32:13,991 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:32:13,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:32:13,997 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-04 15:32:14,000 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 20 statements. [2025-03-04 15:32:14,000 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:32:14,000 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:32:14,051 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:32:14,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:32:14,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299741317] [2025-03-04 15:32:14,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299741317] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:32:14,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789109023] [2025-03-04 15:32:14,051 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:32:14,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:32:14,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:32:14,053 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:32:14,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 15:32:14,088 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-04 15:32:14,098 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 20 statements. [2025-03-04 15:32:14,098 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:32:14,098 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:32:14,098 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 15:32:14,100 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:32:14,144 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:32:14,144 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:32:14,201 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:32:14,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1789109023] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:32:14,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:32:14,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-04 15:32:14,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831501061] [2025-03-04 15:32:14,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:32:14,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-04 15:32:14,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:32:14,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-04 15:32:14,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-04 15:32:14,233 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-03-04 15:32:14,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 40 transitions, 210 flow. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:14,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:32:14,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-03-04 15:32:14,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:32:14,757 INFO L124 PetriNetUnfolderBase]: 2694/5145 cut-off events. [2025-03-04 15:32:14,757 INFO L125 PetriNetUnfolderBase]: For 8684/8719 co-relation queries the response was YES. [2025-03-04 15:32:14,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15558 conditions, 5145 events. 2694/5145 cut-off events. For 8684/8719 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 34182 event pairs, 332 based on Foata normal form. 72/5216 useless extension candidates. Maximal degree in co-relation 15542. Up to 1195 conditions per place. [2025-03-04 15:32:14,779 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 120 selfloop transitions, 30 changer transitions 6/160 dead transitions. [2025-03-04 15:32:14,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 160 transitions, 1219 flow [2025-03-04 15:32:14,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:32:14,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:32:14,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2025-03-04 15:32:14,780 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4625 [2025-03-04 15:32:14,780 INFO L175 Difference]: Start difference. First operand has 60 places, 40 transitions, 210 flow. Second operand 10 states and 148 transitions. [2025-03-04 15:32:14,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 160 transitions, 1219 flow [2025-03-04 15:32:14,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 160 transitions, 1149 flow, removed 21 selfloop flow, removed 2 redundant places. [2025-03-04 15:32:14,805 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 470 flow [2025-03-04 15:32:14,805 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=470, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2025-03-04 15:32:14,806 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 38 predicate places. [2025-03-04 15:32:14,806 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 470 flow [2025-03-04 15:32:14,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:14,806 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:32:14,806 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:32:14,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-04 15:32:15,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:32:15,008 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-04 15:32:15,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:32:15,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1798047857, now seen corresponding path program 2 times [2025-03-04 15:32:15,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:32:15,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954317986] [2025-03-04 15:32:15,008 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:32:15,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:32:15,012 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-03-04 15:32:15,014 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 24 statements. [2025-03-04 15:32:15,014 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:32:15,014 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:32:15,067 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:32:15,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:32:15,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954317986] [2025-03-04 15:32:15,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954317986] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:32:15,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [36089725] [2025-03-04 15:32:15,068 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:32:15,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:32:15,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:32:15,070 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:32:15,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 15:32:15,103 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-03-04 15:32:15,109 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 24 statements. [2025-03-04 15:32:15,109 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:32:15,109 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:32:15,109 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 15:32:15,110 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:32:15,153 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:32:15,153 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:32:15,195 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:32:15,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [36089725] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:32:15,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:32:15,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2025-03-04 15:32:15,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273794913] [2025-03-04 15:32:15,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:32:15,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 15:32:15,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:32:15,196 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 15:32:15,196 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:32:15,209 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-03-04 15:32:15,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 470 flow. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:15,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:32:15,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-03-04 15:32:15,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:32:15,635 INFO L124 PetriNetUnfolderBase]: 3414/6353 cut-off events. [2025-03-04 15:32:15,635 INFO L125 PetriNetUnfolderBase]: For 14965/14993 co-relation queries the response was YES. [2025-03-04 15:32:15,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21418 conditions, 6353 events. 3414/6353 cut-off events. For 14965/14993 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 42700 event pairs, 392 based on Foata normal form. 98/6449 useless extension candidates. Maximal degree in co-relation 21396. Up to 1641 conditions per place. [2025-03-04 15:32:15,660 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 77 selfloop transitions, 18 changer transitions 98/197 dead transitions. [2025-03-04 15:32:15,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 197 transitions, 1803 flow [2025-03-04 15:32:15,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 15:32:15,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-04 15:32:15,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2025-03-04 15:32:15,663 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.459375 [2025-03-04 15:32:15,663 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 470 flow. Second operand 10 states and 147 transitions. [2025-03-04 15:32:15,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 197 transitions, 1803 flow [2025-03-04 15:32:15,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 197 transitions, 1802 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:32:15,711 INFO L231 Difference]: Finished difference. Result has 85 places, 68 transitions, 556 flow [2025-03-04 15:32:15,712 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=556, PETRI_PLACES=85, PETRI_TRANSITIONS=68} [2025-03-04 15:32:15,712 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 52 predicate places. [2025-03-04 15:32:15,712 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 68 transitions, 556 flow [2025-03-04 15:32:15,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:15,712 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:32:15,712 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:32:15,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 15:32:15,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:32:15,913 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-04 15:32:15,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:32:15,913 INFO L85 PathProgramCache]: Analyzing trace with hash 403489266, now seen corresponding path program 1 times [2025-03-04 15:32:15,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:32:15,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097652294] [2025-03-04 15:32:15,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:32:15,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:32:15,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-04 15:32:15,921 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 15:32:15,922 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:32:15,922 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:32:16,006 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:32:16,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:32:16,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097652294] [2025-03-04 15:32:16,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097652294] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:32:16,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303162012] [2025-03-04 15:32:16,007 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:32:16,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:32:16,007 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:32:16,009 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:32:16,010 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 15:32:16,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-04 15:32:16,053 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 15:32:16,053 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:32:16,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:32:16,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 15:32:16,054 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:32:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:32:16,087 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:32:16,196 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:32:16,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303162012] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:32:16,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:32:16,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-03-04 15:32:16,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950427132] [2025-03-04 15:32:16,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:32:16,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-04 15:32:16,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:32:16,197 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-04 15:32:16,197 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-03-04 15:32:16,219 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-04 15:32:16,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 68 transitions, 556 flow. Second operand has 24 states, 24 states have (on average 10.416666666666666) internal successors, (250), 24 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:16,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:32:16,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-04 15:32:16,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:32:16,968 INFO L124 PetriNetUnfolderBase]: 2814/5609 cut-off events. [2025-03-04 15:32:16,969 INFO L125 PetriNetUnfolderBase]: For 27085/27405 co-relation queries the response was YES. [2025-03-04 15:32:16,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22821 conditions, 5609 events. 2814/5609 cut-off events. For 27085/27405 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 36301 event pairs, 346 based on Foata normal form. 192/5798 useless extension candidates. Maximal degree in co-relation 22792. Up to 931 conditions per place. [2025-03-04 15:32:16,992 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 546 selfloop transitions, 42 changer transitions 80/672 dead transitions. [2025-03-04 15:32:16,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 672 transitions, 7130 flow [2025-03-04 15:32:16,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-04 15:32:16,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-04 15:32:16,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 444 transitions. [2025-03-04 15:32:16,994 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6306818181818182 [2025-03-04 15:32:16,994 INFO L175 Difference]: Start difference. First operand has 85 places, 68 transitions, 556 flow. Second operand 22 states and 444 transitions. [2025-03-04 15:32:16,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 672 transitions, 7130 flow [2025-03-04 15:32:17,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 672 transitions, 6703 flow, removed 213 selfloop flow, removed 4 redundant places. [2025-03-04 15:32:17,026 INFO L231 Difference]: Finished difference. Result has 104 places, 92 transitions, 885 flow [2025-03-04 15:32:17,026 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=885, PETRI_PLACES=104, PETRI_TRANSITIONS=92} [2025-03-04 15:32:17,027 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 71 predicate places. [2025-03-04 15:32:17,027 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 92 transitions, 885 flow [2025-03-04 15:32:17,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.416666666666666) internal successors, (250), 24 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:17,027 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:32:17,027 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:32:17,033 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-04 15:32:17,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:32:17,228 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-04 15:32:17,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:32:17,228 INFO L85 PathProgramCache]: Analyzing trace with hash -620185186, now seen corresponding path program 1 times [2025-03-04 15:32:17,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:32:17,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376175175] [2025-03-04 15:32:17,229 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:32:17,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:32:17,232 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-04 15:32:17,236 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 15:32:17,236 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:32:17,236 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:32:17,328 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:32:17,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:32:17,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376175175] [2025-03-04 15:32:17,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376175175] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:32:17,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836217054] [2025-03-04 15:32:17,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:32:17,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:32:17,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:32:17,330 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:32:17,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 15:32:17,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-04 15:32:17,370 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-04 15:32:17,371 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:32:17,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:32:17,371 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-04 15:32:17,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:32:17,403 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:32:17,403 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:32:17,502 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:32:17,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836217054] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:32:17,503 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:32:17,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-03-04 15:32:17,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858980362] [2025-03-04 15:32:17,504 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:32:17,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-04 15:32:17,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:32:17,504 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-04 15:32:17,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-03-04 15:32:17,520 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-04 15:32:17,521 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 92 transitions, 885 flow. Second operand has 24 states, 24 states have (on average 10.416666666666666) internal successors, (250), 24 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:17,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:32:17,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-04 15:32:17,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:32:18,601 INFO L124 PetriNetUnfolderBase]: 5549/11071 cut-off events. [2025-03-04 15:32:18,601 INFO L125 PetriNetUnfolderBase]: For 64278/64336 co-relation queries the response was YES. [2025-03-04 15:32:18,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47637 conditions, 11071 events. 5549/11071 cut-off events. For 64278/64336 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 79289 event pairs, 936 based on Foata normal form. 474/11541 useless extension candidates. Maximal degree in co-relation 47605. Up to 1938 conditions per place. [2025-03-04 15:32:18,653 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 1060 selfloop transitions, 42 changer transitions 20/1126 dead transitions. [2025-03-04 15:32:18,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 1126 transitions, 14509 flow [2025-03-04 15:32:18,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-04 15:32:18,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-04 15:32:18,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 394 transitions. [2025-03-04 15:32:18,657 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5596590909090909 [2025-03-04 15:32:18,657 INFO L175 Difference]: Start difference. First operand has 104 places, 92 transitions, 885 flow. Second operand 22 states and 394 transitions. [2025-03-04 15:32:18,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 1126 transitions, 14509 flow [2025-03-04 15:32:18,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 1126 transitions, 12073 flow, removed 840 selfloop flow, removed 9 redundant places. [2025-03-04 15:32:18,755 INFO L231 Difference]: Finished difference. Result has 122 places, 116 transitions, 1137 flow [2025-03-04 15:32:18,755 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1137, PETRI_PLACES=122, PETRI_TRANSITIONS=116} [2025-03-04 15:32:18,755 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 89 predicate places. [2025-03-04 15:32:18,756 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 116 transitions, 1137 flow [2025-03-04 15:32:18,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.416666666666666) internal successors, (250), 24 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:18,756 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:32:18,756 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:32:18,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-04 15:32:18,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-04 15:32:18,957 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-04 15:32:18,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:32:18,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1145932738, now seen corresponding path program 2 times [2025-03-04 15:32:18,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:32:18,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207176536] [2025-03-04 15:32:18,957 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:32:18,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:32:18,961 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-04 15:32:18,963 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 44 statements. [2025-03-04 15:32:18,963 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:32:18,963 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:32:19,002 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:32:19,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:32:19,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207176536] [2025-03-04 15:32:19,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207176536] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:32:19,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194884370] [2025-03-04 15:32:19,002 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:32:19,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:32:19,002 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:32:19,004 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:32:19,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-04 15:32:19,038 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-04 15:32:19,044 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 44 statements. [2025-03-04 15:32:19,044 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:32:19,044 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:32:19,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 15:32:19,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:32:19,100 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:32:19,100 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:32:19,145 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:32:19,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194884370] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:32:19,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:32:19,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2025-03-04 15:32:19,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498502872] [2025-03-04 15:32:19,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:32:19,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-04 15:32:19,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:32:19,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-04 15:32:19,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:32:19,159 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-03-04 15:32:19,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 116 transitions, 1137 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:19,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:32:19,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-03-04 15:32:19,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:32:20,018 INFO L124 PetriNetUnfolderBase]: 5436/11030 cut-off events. [2025-03-04 15:32:20,018 INFO L125 PetriNetUnfolderBase]: For 61141/61144 co-relation queries the response was YES. [2025-03-04 15:32:20,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47739 conditions, 11030 events. 5436/11030 cut-off events. For 61141/61144 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 79245 event pairs, 1701 based on Foata normal form. 70/11098 useless extension candidates. Maximal degree in co-relation 47701. Up to 4612 conditions per place. [2025-03-04 15:32:20,067 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 60 selfloop transitions, 3 changer transitions 130/197 dead transitions. [2025-03-04 15:32:20,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 197 transitions, 2371 flow [2025-03-04 15:32:20,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 15:32:20,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-04 15:32:20,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2025-03-04 15:32:20,068 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41796875 [2025-03-04 15:32:20,068 INFO L175 Difference]: Start difference. First operand has 122 places, 116 transitions, 1137 flow. Second operand 8 states and 107 transitions. [2025-03-04 15:32:20,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 197 transitions, 2371 flow [2025-03-04 15:32:20,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 197 transitions, 2029 flow, removed 83 selfloop flow, removed 20 redundant places. [2025-03-04 15:32:20,265 INFO L231 Difference]: Finished difference. Result has 108 places, 64 transitions, 480 flow [2025-03-04 15:32:20,266 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=480, PETRI_PLACES=108, PETRI_TRANSITIONS=64} [2025-03-04 15:32:20,266 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 75 predicate places. [2025-03-04 15:32:20,266 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 64 transitions, 480 flow [2025-03-04 15:32:20,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:20,266 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:32:20,266 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:32:20,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-04 15:32:20,466 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-04 15:32:20,467 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-04 15:32:20,467 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:32:20,467 INFO L85 PathProgramCache]: Analyzing trace with hash -869682146, now seen corresponding path program 2 times [2025-03-04 15:32:20,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:32:20,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930562544] [2025-03-04 15:32:20,467 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:32:20,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:32:20,473 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-04 15:32:20,475 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 44 statements. [2025-03-04 15:32:20,475 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:32:20,475 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:32:20,523 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:32:20,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:32:20,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930562544] [2025-03-04 15:32:20,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930562544] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:32:20,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734157462] [2025-03-04 15:32:20,523 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:32:20,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:32:20,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:32:20,525 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:32:20,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-04 15:32:20,565 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-04 15:32:20,574 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 44 statements. [2025-03-04 15:32:20,574 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:32:20,574 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:32:20,576 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-04 15:32:20,577 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:32:20,635 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:32:20,635 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:32:20,717 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-04 15:32:20,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734157462] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:32:20,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:32:20,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-04 15:32:20,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846259897] [2025-03-04 15:32:20,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:32:20,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-04 15:32:20,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:32:20,718 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-04 15:32:20,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-04 15:32:20,740 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-03-04 15:32:20,740 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 64 transitions, 480 flow. Second operand has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:20,740 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:32:20,740 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-03-04 15:32:20,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:32:21,192 INFO L124 PetriNetUnfolderBase]: 2616/5346 cut-off events. [2025-03-04 15:32:21,192 INFO L125 PetriNetUnfolderBase]: For 18119/18119 co-relation queries the response was YES. [2025-03-04 15:32:21,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19663 conditions, 5346 events. 2616/5346 cut-off events. For 18119/18119 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 33170 event pairs, 2 based on Foata normal form. 79/5424 useless extension candidates. Maximal degree in co-relation 19635. Up to 2191 conditions per place. [2025-03-04 15:32:21,208 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 0 selfloop transitions, 0 changer transitions 122/122 dead transitions. [2025-03-04 15:32:21,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 122 transitions, 1093 flow [2025-03-04 15:32:21,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 15:32:21,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-04 15:32:21,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2025-03-04 15:32:21,209 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.375 [2025-03-04 15:32:21,209 INFO L175 Difference]: Start difference. First operand has 108 places, 64 transitions, 480 flow. Second operand 8 states and 96 transitions. [2025-03-04 15:32:21,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 122 transitions, 1093 flow [2025-03-04 15:32:21,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 122 transitions, 835 flow, removed 27 selfloop flow, removed 24 redundant places. [2025-03-04 15:32:21,238 INFO L231 Difference]: Finished difference. Result has 83 places, 0 transitions, 0 flow [2025-03-04 15:32:21,238 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=83, PETRI_TRANSITIONS=0} [2025-03-04 15:32:21,239 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 50 predicate places. [2025-03-04 15:32:21,239 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 0 transitions, 0 flow [2025-03-04 15:32:21,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:32:21,241 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2025-03-04 15:32:21,241 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 14 remaining) [2025-03-04 15:32:21,241 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2025-03-04 15:32:21,241 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2025-03-04 15:32:21,241 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2025-03-04 15:32:21,241 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2025-03-04 15:32:21,241 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2025-03-04 15:32:21,241 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2025-03-04 15:32:21,241 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2025-03-04 15:32:21,241 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2025-03-04 15:32:21,241 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2025-03-04 15:32:21,241 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2025-03-04 15:32:21,241 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2025-03-04 15:32:21,241 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2025-03-04 15:32:21,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-04 15:32:21,445 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-04 15:32:21,445 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-04 15:32:21,448 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 15:32:21,448 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 15:32:21,451 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 03:32:21 BasicIcfg [2025-03-04 15:32:21,451 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 15:32:21,451 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 15:32:21,451 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 15:32:21,451 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 15:32:21,452 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:32:10" (3/4) ... [2025-03-04 15:32:21,452 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 15:32:21,454 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure f1 [2025-03-04 15:32:21,454 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure f2 [2025-03-04 15:32:21,456 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2025-03-04 15:32:21,456 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2025-03-04 15:32:21,456 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2025-03-04 15:32:21,456 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-04 15:32:21,507 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 15:32:21,507 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 15:32:21,507 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 15:32:21,508 INFO L158 Benchmark]: Toolchain (without parser) took 11769.53ms. Allocated memory was 167.8MB in the beginning and 1.0GB in the end (delta: 855.6MB). Free memory was 121.4MB in the beginning and 378.9MB in the end (delta: -257.4MB). Peak memory consumption was 595.3MB. Max. memory is 16.1GB. [2025-03-04 15:32:21,508 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 116.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:32:21,509 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.85ms. Allocated memory is still 167.8MB. Free memory was 121.4MB in the beginning and 101.2MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 15:32:21,509 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.27ms. Allocated memory is still 167.8MB. Free memory was 101.2MB in the beginning and 100.1MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 15:32:21,509 INFO L158 Benchmark]: Boogie Preprocessor took 23.83ms. Allocated memory is still 167.8MB. Free memory was 100.1MB in the beginning and 98.0MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:32:21,509 INFO L158 Benchmark]: IcfgBuilder took 403.03ms. Allocated memory is still 167.8MB. Free memory was 98.0MB in the beginning and 74.9MB in the end (delta: 23.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 15:32:21,509 INFO L158 Benchmark]: TraceAbstraction took 10883.19ms. Allocated memory was 167.8MB in the beginning and 1.0GB in the end (delta: 855.6MB). Free memory was 73.9MB in the beginning and 382.8MB in the end (delta: -308.9MB). Peak memory consumption was 545.0MB. Max. memory is 16.1GB. [2025-03-04 15:32:21,509 INFO L158 Benchmark]: Witness Printer took 55.93ms. Allocated memory is still 1.0GB. Free memory was 382.8MB in the beginning and 378.9MB in the end (delta: 3.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:32:21,510 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 116.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 368.85ms. Allocated memory is still 167.8MB. Free memory was 121.4MB in the beginning and 101.2MB in the end (delta: 20.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.27ms. Allocated memory is still 167.8MB. Free memory was 101.2MB in the beginning and 100.1MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 23.83ms. Allocated memory is still 167.8MB. Free memory was 100.1MB in the beginning and 98.0MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 403.03ms. Allocated memory is still 167.8MB. Free memory was 98.0MB in the beginning and 74.9MB in the end (delta: 23.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 10883.19ms. Allocated memory was 167.8MB in the beginning and 1.0GB in the end (delta: 855.6MB). Free memory was 73.9MB in the beginning and 382.8MB in the end (delta: -308.9MB). Peak memory consumption was 545.0MB. Max. memory is 16.1GB. * Witness Printer took 55.93ms. Allocated memory is still 1.0GB. Free memory was 382.8MB in the beginning and 378.9MB in the end (delta: 3.9MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 761]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 761]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 770]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 770]: 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 5 procedures, 55 locations, 14 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: 10.8s, OverallIterations: 14, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1740 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1692 mSDsluCounter, 365 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 350 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3031 IncrementalHoareTripleChecker+Invalid, 3064 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 15 mSDtfsCounter, 3031 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 574 GetRequests, 392 SyntacticMatches, 8 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1137occurred in iteration=12, InterpolantAutomatonStates: 126, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 499 NumberOfCodeBlocks, 331 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 677 ConstructedInterpolants, 0 QuantifiedInterpolants, 1853 SizeOfPredicates, 42 NumberOfNonLiveVariables, 770 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 32 InterpolantComputations, 6 PerfectInterpolantSequences, 1006/1376 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! [2025-03-04 15:32:21,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE