./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-theta/unwind3-nondet.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-theta/unwind3-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 2d10f4791070edb44c97ab9948c6a47d7a3edd4f9cb75d429f64896be7b2f789 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:48:35,772 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:48:35,807 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:48:35,815 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:48:35,815 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:48:35,836 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:48:35,837 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:48:35,837 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:48:35,837 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:48:35,837 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:48:35,837 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:48:35,837 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:48:35,837 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:48:35,838 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:48:35,838 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:48:35,838 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:48:35,838 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:48:35,838 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:48:35,838 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:48:35,838 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:48:35,838 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:48:35,838 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:48:35,838 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:48:35,838 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:48:35,838 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:48:35,838 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:48:35,838 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:48:35,838 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:48:35,838 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:48:35,838 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:48:35,838 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:48:35,838 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:48:35,838 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:48:35,839 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:48:35,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:48:35,839 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:48:35,839 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:48:35,839 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:48:35,839 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:48:35,839 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:48:35,839 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:48:35,839 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:48:35,839 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:48:35,839 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:48:35,839 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:48:35,839 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 -> 2d10f4791070edb44c97ab9948c6a47d7a3edd4f9cb75d429f64896be7b2f789 [2025-03-17 19:48:36,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:48:36,075 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:48:36,076 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:48:36,077 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:48:36,077 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:48:36,079 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind3-nondet.i [2025-03-17 19:48:37,262 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/026ba0007/f0ebfeac88a44a709f8d4a9cac0f2a96/FLAGf4e65c1b1 [2025-03-17 19:48:37,559 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:48:37,560 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind3-nondet.i [2025-03-17 19:48:37,576 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/026ba0007/f0ebfeac88a44a709f8d4a9cac0f2a96/FLAGf4e65c1b1 [2025-03-17 19:48:37,830 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/026ba0007/f0ebfeac88a44a709f8d4a9cac0f2a96 [2025-03-17 19:48:37,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:48:37,832 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:48:37,835 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:48:37,835 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:48:37,837 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:48:37,840 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:48:37" (1/1) ... [2025-03-17 19:48:37,841 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@362e331b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:37, skipping insertion in model container [2025-03-17 19:48:37,841 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:48:37" (1/1) ... [2025-03-17 19:48:37,865 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:48:38,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:48:38,120 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:48:38,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:48:38,185 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:48:38,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:38 WrapperNode [2025-03-17 19:48:38,186 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:48:38,187 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:48:38,187 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:48:38,187 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:48:38,191 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:38" (1/1) ... [2025-03-17 19:48:38,199 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:38" (1/1) ... [2025-03-17 19:48:38,210 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 69 [2025-03-17 19:48:38,211 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:48:38,212 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:48:38,213 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:48:38,213 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:48:38,217 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:38" (1/1) ... [2025-03-17 19:48:38,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:38" (1/1) ... [2025-03-17 19:48:38,219 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:38" (1/1) ... [2025-03-17 19:48:38,225 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-17 19:48:38,226 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:38" (1/1) ... [2025-03-17 19:48:38,226 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:38" (1/1) ... [2025-03-17 19:48:38,228 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:38" (1/1) ... [2025-03-17 19:48:38,229 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:38" (1/1) ... [2025-03-17 19:48:38,230 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:38" (1/1) ... [2025-03-17 19:48:38,230 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:38" (1/1) ... [2025-03-17 19:48:38,231 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:48:38,232 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:48:38,232 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:48:38,232 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:48:38,232 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:38" (1/1) ... [2025-03-17 19:48:38,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:48:38,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:48:38,258 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 19:48:38,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 19:48:38,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:48:38,277 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-03-17 19:48:38,277 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-03-17 19:48:38,277 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-03-17 19:48:38,277 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-03-17 19:48:38,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:48:38,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:48:38,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:48:38,278 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:48:38,365 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:48:38,366 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:48:38,500 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:48:38,500 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:48:38,579 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:48:38,579 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:48:38,579 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:48:38 BoogieIcfgContainer [2025-03-17 19:48:38,579 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:48:38,581 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:48:38,581 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:48:38,586 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:48:38,586 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:48:37" (1/3) ... [2025-03-17 19:48:38,587 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6086c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:48:38, skipping insertion in model container [2025-03-17 19:48:38,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:38" (2/3) ... [2025-03-17 19:48:38,588 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a6086c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:48:38, skipping insertion in model container [2025-03-17 19:48:38,588 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:48:38" (3/3) ... [2025-03-17 19:48:38,589 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind3-nondet.i [2025-03-17 19:48:38,599 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:48:38,600 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind3-nondet.i that has 3 procedures, 32 locations, 1 initial locations, 2 loop locations, and 8 error locations. [2025-03-17 19:48:38,601 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:48:38,631 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 19:48:38,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 33 transitions, 74 flow [2025-03-17 19:48:38,669 INFO L124 PetriNetUnfolderBase]: 2/47 cut-off events. [2025-03-17 19:48:38,670 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:48:38,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56 conditions, 47 events. 2/47 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 132 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 29. Up to 4 conditions per place. [2025-03-17 19:48:38,672 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 33 transitions, 74 flow [2025-03-17 19:48:38,674 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 32 transitions, 71 flow [2025-03-17 19:48:38,680 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:48:38,687 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;@57ba40ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:48:38,688 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2025-03-17 19:48:38,692 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:48:38,692 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-17 19:48:38,692 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:48:38,692 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:38,692 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:38,692 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-03-17 19:48:38,696 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:38,696 INFO L85 PathProgramCache]: Analyzing trace with hash -2089181378, now seen corresponding path program 1 times [2025-03-17 19:48:38,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:38,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007602152] [2025-03-17 19:48:38,701 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:38,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:38,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:48:38,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:48:38,759 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:38,759 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:38,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:38,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:38,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007602152] [2025-03-17 19:48:38,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007602152] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:38,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:38,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:48:38,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282338862] [2025-03-17 19:48:38,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:38,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:48:38,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:38,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:48:38,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:48:38,977 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 33 [2025-03-17 19:48:38,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 32 transitions, 71 flow. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:38,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:38,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 33 [2025-03-17 19:48:38,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:39,151 INFO L124 PetriNetUnfolderBase]: 108/260 cut-off events. [2025-03-17 19:48:39,151 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 19:48:39,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 260 events. 108/260 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1215 event pairs, 23 based on Foata normal form. 20/248 useless extension candidates. Maximal degree in co-relation 427. Up to 82 conditions per place. [2025-03-17 19:48:39,158 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 46 selfloop transitions, 12 changer transitions 2/69 dead transitions. [2025-03-17 19:48:39,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 69 transitions, 274 flow [2025-03-17 19:48:39,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 19:48:39,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 19:48:39,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 156 transitions. [2025-03-17 19:48:39,167 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5252525252525253 [2025-03-17 19:48:39,168 INFO L175 Difference]: Start difference. First operand has 37 places, 32 transitions, 71 flow. Second operand 9 states and 156 transitions. [2025-03-17 19:48:39,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 69 transitions, 274 flow [2025-03-17 19:48:39,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 69 transitions, 270 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:48:39,173 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 142 flow [2025-03-17 19:48:39,174 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=142, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2025-03-17 19:48:39,176 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 11 predicate places. [2025-03-17 19:48:39,176 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 142 flow [2025-03-17 19:48:39,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:39,177 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:39,177 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:39,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:48:39,177 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-03-17 19:48:39,177 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:39,178 INFO L85 PathProgramCache]: Analyzing trace with hash -340113109, now seen corresponding path program 1 times [2025-03-17 19:48:39,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:39,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628729108] [2025-03-17 19:48:39,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:39,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:39,183 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:48:39,190 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:48:39,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:39,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:39,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:39,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:39,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628729108] [2025-03-17 19:48:39,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628729108] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:39,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:39,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:39,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140146992] [2025-03-17 19:48:39,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:39,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:48:39,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:39,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:48:39,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:48:39,278 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 13 out of 33 [2025-03-17 19:48:39,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:39,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:39,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 13 of 33 [2025-03-17 19:48:39,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:39,369 INFO L124 PetriNetUnfolderBase]: 72/196 cut-off events. [2025-03-17 19:48:39,370 INFO L125 PetriNetUnfolderBase]: For 86/89 co-relation queries the response was YES. [2025-03-17 19:48:39,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440 conditions, 196 events. 72/196 cut-off events. For 86/89 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 833 event pairs, 10 based on Foata normal form. 25/208 useless extension candidates. Maximal degree in co-relation 375. Up to 74 conditions per place. [2025-03-17 19:48:39,371 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 35 selfloop transitions, 5 changer transitions 3/55 dead transitions. [2025-03-17 19:48:39,371 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 55 transitions, 269 flow [2025-03-17 19:48:39,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:48:39,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:48:39,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 108 transitions. [2025-03-17 19:48:39,373 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6545454545454545 [2025-03-17 19:48:39,373 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 142 flow. Second operand 5 states and 108 transitions. [2025-03-17 19:48:39,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 55 transitions, 269 flow [2025-03-17 19:48:39,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 55 transitions, 262 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:48:39,375 INFO L231 Difference]: Finished difference. Result has 47 places, 35 transitions, 132 flow [2025-03-17 19:48:39,375 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=47, PETRI_TRANSITIONS=35} [2025-03-17 19:48:39,375 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2025-03-17 19:48:39,375 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 35 transitions, 132 flow [2025-03-17 19:48:39,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:39,375 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:39,376 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:39,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 19:48:39,376 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-03-17 19:48:39,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:39,376 INFO L85 PathProgramCache]: Analyzing trace with hash -339242219, now seen corresponding path program 1 times [2025-03-17 19:48:39,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:39,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044769765] [2025-03-17 19:48:39,377 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:39,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:39,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:48:39,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:48:39,396 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:39,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:39,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:39,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:39,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044769765] [2025-03-17 19:48:39,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044769765] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:39,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:39,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:48:39,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499063367] [2025-03-17 19:48:39,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:39,432 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:48:39,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:39,432 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:48:39,432 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:48:39,436 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2025-03-17 19:48:39,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 35 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:39,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:39,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2025-03-17 19:48:39,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:39,466 INFO L124 PetriNetUnfolderBase]: 50/138 cut-off events. [2025-03-17 19:48:39,466 INFO L125 PetriNetUnfolderBase]: For 114/114 co-relation queries the response was YES. [2025-03-17 19:48:39,469 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 138 events. 50/138 cut-off events. For 114/114 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 508 event pairs, 29 based on Foata normal form. 7/134 useless extension candidates. Maximal degree in co-relation 275. Up to 104 conditions per place. [2025-03-17 19:48:39,469 INFO L140 encePairwiseOnDemand]: 31/33 looper letters, 20 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2025-03-17 19:48:39,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 33 transitions, 165 flow [2025-03-17 19:48:39,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:48:39,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:48:39,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2025-03-17 19:48:39,470 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6161616161616161 [2025-03-17 19:48:39,470 INFO L175 Difference]: Start difference. First operand has 47 places, 35 transitions, 132 flow. Second operand 3 states and 61 transitions. [2025-03-17 19:48:39,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 33 transitions, 165 flow [2025-03-17 19:48:39,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 33 transitions, 155 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:48:39,471 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 115 flow [2025-03-17 19:48:39,471 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=115, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2025-03-17 19:48:39,472 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 6 predicate places. [2025-03-17 19:48:39,472 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 115 flow [2025-03-17 19:48:39,472 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:39,472 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:39,472 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:39,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:48:39,472 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-03-17 19:48:39,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:39,473 INFO L85 PathProgramCache]: Analyzing trace with hash -339242186, now seen corresponding path program 1 times [2025-03-17 19:48:39,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:39,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623030292] [2025-03-17 19:48:39,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:39,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:39,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:48:39,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:48:39,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:39,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:39,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:39,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:39,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623030292] [2025-03-17 19:48:39,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623030292] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:39,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:39,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:39,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103556392] [2025-03-17 19:48:39,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:39,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:48:39,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:39,521 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:48:39,521 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:48:39,526 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 33 [2025-03-17 19:48:39,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 33 transitions, 115 flow. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:39,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:39,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 33 [2025-03-17 19:48:39,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:39,591 INFO L124 PetriNetUnfolderBase]: 94/244 cut-off events. [2025-03-17 19:48:39,591 INFO L125 PetriNetUnfolderBase]: For 47/47 co-relation queries the response was YES. [2025-03-17 19:48:39,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 535 conditions, 244 events. 94/244 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1047 event pairs, 47 based on Foata normal form. 10/239 useless extension candidates. Maximal degree in co-relation 525. Up to 147 conditions per place. [2025-03-17 19:48:39,592 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 30 selfloop transitions, 3 changer transitions 0/43 dead transitions. [2025-03-17 19:48:39,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 43 transitions, 211 flow [2025-03-17 19:48:39,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:48:39,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:48:39,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 89 transitions. [2025-03-17 19:48:39,593 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6742424242424242 [2025-03-17 19:48:39,593 INFO L175 Difference]: Start difference. First operand has 43 places, 33 transitions, 115 flow. Second operand 4 states and 89 transitions. [2025-03-17 19:48:39,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 43 transitions, 211 flow [2025-03-17 19:48:39,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 43 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:48:39,594 INFO L231 Difference]: Finished difference. Result has 47 places, 35 transitions, 136 flow [2025-03-17 19:48:39,594 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=42, 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=136, PETRI_PLACES=47, PETRI_TRANSITIONS=35} [2025-03-17 19:48:39,596 INFO L279 CegarLoopForPetriNet]: 37 programPoint places, 10 predicate places. [2025-03-17 19:48:39,596 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 35 transitions, 136 flow [2025-03-17 19:48:39,596 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:39,596 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:39,596 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:39,596 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:48:39,597 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 13 more)] === [2025-03-17 19:48:39,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:39,597 INFO L85 PathProgramCache]: Analyzing trace with hash -432906265, now seen corresponding path program 1 times [2025-03-17 19:48:39,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:39,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811781126] [2025-03-17 19:48:39,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:39,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:39,604 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:48:39,608 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:48:39,608 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:39,608 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:48:39,608 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:48:39,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:48:39,613 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:48:39,615 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:39,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:48:39,626 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:48:39,628 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 19:48:39,629 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 16 remaining) [2025-03-17 19:48:39,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2025-03-17 19:48:39,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2025-03-17 19:48:39,630 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 16 remaining) [2025-03-17 19:48:39,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2025-03-17 19:48:39,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2025-03-17 19:48:39,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2025-03-17 19:48:39,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2025-03-17 19:48:39,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2025-03-17 19:48:39,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2025-03-17 19:48:39,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2025-03-17 19:48:39,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2025-03-17 19:48:39,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2025-03-17 19:48:39,631 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2025-03-17 19:48:39,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2025-03-17 19:48:39,632 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2025-03-17 19:48:39,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:48:39,632 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2025-03-17 19:48:39,634 WARN L246 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 19:48:39,634 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2025-03-17 19:48:39,649 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 19:48:39,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 61 places, 53 transitions, 126 flow [2025-03-17 19:48:39,656 INFO L124 PetriNetUnfolderBase]: 3/75 cut-off events. [2025-03-17 19:48:39,657 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 19:48:39,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 75 events. 3/75 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 255 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 86. Up to 6 conditions per place. [2025-03-17 19:48:39,657 INFO L82 GeneralOperation]: Start removeDead. Operand has 61 places, 53 transitions, 126 flow [2025-03-17 19:48:39,657 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 40 transitions, 93 flow [2025-03-17 19:48:39,658 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:48:39,658 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;@57ba40ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:48:39,658 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2025-03-17 19:48:39,661 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:48:39,661 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-17 19:48:39,661 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:48:39,661 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:39,661 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:39,662 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-17 19:48:39,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:39,662 INFO L85 PathProgramCache]: Analyzing trace with hash -728185114, now seen corresponding path program 1 times [2025-03-17 19:48:39,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:39,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920982772] [2025-03-17 19:48:39,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:39,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:39,667 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:48:39,669 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:48:39,671 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:39,671 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:39,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:39,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:39,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920982772] [2025-03-17 19:48:39,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920982772] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:39,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:39,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:48:39,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942090690] [2025-03-17 19:48:39,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:39,721 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:48:39,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:39,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:48:39,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:48:39,759 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2025-03-17 19:48:39,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 40 transitions, 93 flow. Second operand has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:39,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:39,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2025-03-17 19:48:39,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:40,052 INFO L124 PetriNetUnfolderBase]: 1210/2185 cut-off events. [2025-03-17 19:48:40,053 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2025-03-17 19:48:40,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4227 conditions, 2185 events. 1210/2185 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13373 event pairs, 211 based on Foata normal form. 96/2035 useless extension candidates. Maximal degree in co-relation 1893. Up to 518 conditions per place. [2025-03-17 19:48:40,061 INFO L140 encePairwiseOnDemand]: 39/53 looper letters, 99 selfloop transitions, 17 changer transitions 1/130 dead transitions. [2025-03-17 19:48:40,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 130 transitions, 532 flow [2025-03-17 19:48:40,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:48:40,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:48:40,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 314 transitions. [2025-03-17 19:48:40,063 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5924528301886792 [2025-03-17 19:48:40,063 INFO L175 Difference]: Start difference. First operand has 47 places, 40 transitions, 93 flow. Second operand 10 states and 314 transitions. [2025-03-17 19:48:40,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 130 transitions, 532 flow [2025-03-17 19:48:40,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 130 transitions, 526 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:48:40,065 INFO L231 Difference]: Finished difference. Result has 63 places, 54 transitions, 216 flow [2025-03-17 19:48:40,065 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=216, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2025-03-17 19:48:40,066 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 16 predicate places. [2025-03-17 19:48:40,066 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 216 flow [2025-03-17 19:48:40,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.166666666666668) internal successors, (121), 6 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:40,066 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:40,066 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:40,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:48:40,066 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-17 19:48:40,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:40,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1098901832, now seen corresponding path program 1 times [2025-03-17 19:48:40,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:40,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159802977] [2025-03-17 19:48:40,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:40,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:40,071 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:48:40,072 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:48:40,073 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:40,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:40,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:40,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:40,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159802977] [2025-03-17 19:48:40,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159802977] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:40,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:40,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:40,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343082793] [2025-03-17 19:48:40,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:40,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:48:40,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:40,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:48:40,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:48:40,124 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2025-03-17 19:48:40,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 216 flow. Second operand has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:40,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:40,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2025-03-17 19:48:40,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:40,298 INFO L124 PetriNetUnfolderBase]: 857/1617 cut-off events. [2025-03-17 19:48:40,299 INFO L125 PetriNetUnfolderBase]: For 1211/1454 co-relation queries the response was YES. [2025-03-17 19:48:40,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3896 conditions, 1617 events. 857/1617 cut-off events. For 1211/1454 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 9500 event pairs, 179 based on Foata normal form. 180/1704 useless extension candidates. Maximal degree in co-relation 3825. Up to 773 conditions per place. [2025-03-17 19:48:40,307 INFO L140 encePairwiseOnDemand]: 46/53 looper letters, 67 selfloop transitions, 8 changer transitions 0/91 dead transitions. [2025-03-17 19:48:40,307 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 91 transitions, 483 flow [2025-03-17 19:48:40,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:48:40,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:48:40,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 205 transitions. [2025-03-17 19:48:40,308 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6446540880503144 [2025-03-17 19:48:40,308 INFO L175 Difference]: Start difference. First operand has 63 places, 54 transitions, 216 flow. Second operand 6 states and 205 transitions. [2025-03-17 19:48:40,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 91 transitions, 483 flow [2025-03-17 19:48:40,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 91 transitions, 474 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:48:40,316 INFO L231 Difference]: Finished difference. Result has 65 places, 52 transitions, 223 flow [2025-03-17 19:48:40,317 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=223, PETRI_PLACES=65, PETRI_TRANSITIONS=52} [2025-03-17 19:48:40,317 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 18 predicate places. [2025-03-17 19:48:40,317 INFO L471 AbstractCegarLoop]: Abstraction has has 65 places, 52 transitions, 223 flow [2025-03-17 19:48:40,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.2) internal successors, (116), 5 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:40,317 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:40,317 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:40,317 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:48:40,317 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-17 19:48:40,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:40,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1098053782, now seen corresponding path program 1 times [2025-03-17 19:48:40,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:40,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301962005] [2025-03-17 19:48:40,318 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:40,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:40,321 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:48:40,323 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:48:40,323 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:40,323 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:40,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:40,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:40,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301962005] [2025-03-17 19:48:40,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301962005] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:40,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:40,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:48:40,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820846828] [2025-03-17 19:48:40,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:40,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:48:40,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:40,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:48:40,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:48:40,343 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 53 [2025-03-17 19:48:40,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 52 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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) [2025-03-17 19:48:40,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:40,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 53 [2025-03-17 19:48:40,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:40,442 INFO L124 PetriNetUnfolderBase]: 632/1408 cut-off events. [2025-03-17 19:48:40,442 INFO L125 PetriNetUnfolderBase]: For 1281/1449 co-relation queries the response was YES. [2025-03-17 19:48:40,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3236 conditions, 1408 events. 632/1408 cut-off events. For 1281/1449 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 9221 event pairs, 529 based on Foata normal form. 66/1297 useless extension candidates. Maximal degree in co-relation 2143. Up to 1043 conditions per place. [2025-03-17 19:48:40,449 INFO L140 encePairwiseOnDemand]: 51/53 looper letters, 30 selfloop transitions, 1 changer transitions 0/49 dead transitions. [2025-03-17 19:48:40,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 49 transitions, 267 flow [2025-03-17 19:48:40,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:48:40,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:48:40,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2025-03-17 19:48:40,450 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5849056603773585 [2025-03-17 19:48:40,450 INFO L175 Difference]: Start difference. First operand has 65 places, 52 transitions, 223 flow. Second operand 3 states and 93 transitions. [2025-03-17 19:48:40,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 49 transitions, 267 flow [2025-03-17 19:48:40,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 49 transitions, 242 flow, removed 1 selfloop flow, removed 6 redundant places. [2025-03-17 19:48:40,454 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 182 flow [2025-03-17 19:48:40,454 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=180, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2025-03-17 19:48:40,456 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 13 predicate places. [2025-03-17 19:48:40,456 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 182 flow [2025-03-17 19:48:40,456 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 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) [2025-03-17 19:48:40,456 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:40,456 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:40,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 19:48:40,456 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-17 19:48:40,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:40,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1098053749, now seen corresponding path program 1 times [2025-03-17 19:48:40,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:40,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129003422] [2025-03-17 19:48:40,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:40,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:40,461 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:48:40,462 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:48:40,463 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:40,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:40,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:40,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:40,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129003422] [2025-03-17 19:48:40,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129003422] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:40,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:40,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:40,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608255582] [2025-03-17 19:48:40,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:40,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:48:40,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:40,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:48:40,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:48:40,491 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 53 [2025-03-17 19:48:40,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:40,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:40,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 53 [2025-03-17 19:48:40,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:40,705 INFO L124 PetriNetUnfolderBase]: 1172/2480 cut-off events. [2025-03-17 19:48:40,705 INFO L125 PetriNetUnfolderBase]: For 729/903 co-relation queries the response was YES. [2025-03-17 19:48:40,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5229 conditions, 2480 events. 1172/2480 cut-off events. For 729/903 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17517 event pairs, 733 based on Foata normal form. 72/2297 useless extension candidates. Maximal degree in co-relation 5216. Up to 1388 conditions per place. [2025-03-17 19:48:40,717 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 57 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2025-03-17 19:48:40,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 76 transitions, 400 flow [2025-03-17 19:48:40,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:48:40,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:48:40,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 145 transitions. [2025-03-17 19:48:40,718 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6839622641509434 [2025-03-17 19:48:40,718 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 182 flow. Second operand 4 states and 145 transitions. [2025-03-17 19:48:40,718 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 76 transitions, 400 flow [2025-03-17 19:48:40,720 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 76 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:48:40,721 INFO L231 Difference]: Finished difference. Result has 64 places, 51 transitions, 203 flow [2025-03-17 19:48:40,722 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=203, PETRI_PLACES=64, PETRI_TRANSITIONS=51} [2025-03-17 19:48:40,722 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 17 predicate places. [2025-03-17 19:48:40,724 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 51 transitions, 203 flow [2025-03-17 19:48:40,724 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:40,724 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:40,724 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:40,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 19:48:40,724 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-17 19:48:40,724 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:40,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1173138774, now seen corresponding path program 1 times [2025-03-17 19:48:40,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:40,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247690208] [2025-03-17 19:48:40,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:40,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:40,729 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:48:40,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:48:40,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:40,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:40,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:40,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:40,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247690208] [2025-03-17 19:48:40,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247690208] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:40,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:40,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:48:40,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068950904] [2025-03-17 19:48:40,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:40,753 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:48:40,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:40,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:48:40,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:48:40,757 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2025-03-17 19:48:40,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 51 transitions, 203 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:40,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:40,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2025-03-17 19:48:40,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:40,930 INFO L124 PetriNetUnfolderBase]: 1026/2134 cut-off events. [2025-03-17 19:48:40,930 INFO L125 PetriNetUnfolderBase]: For 1231/1317 co-relation queries the response was YES. [2025-03-17 19:48:40,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5198 conditions, 2134 events. 1026/2134 cut-off events. For 1231/1317 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 14651 event pairs, 901 based on Foata normal form. 5/1885 useless extension candidates. Maximal degree in co-relation 5183. Up to 1674 conditions per place. [2025-03-17 19:48:40,938 INFO L140 encePairwiseOnDemand]: 48/53 looper letters, 34 selfloop transitions, 5 changer transitions 0/54 dead transitions. [2025-03-17 19:48:40,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 54 transitions, 291 flow [2025-03-17 19:48:40,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:48:40,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:48:40,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 107 transitions. [2025-03-17 19:48:40,939 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6729559748427673 [2025-03-17 19:48:40,939 INFO L175 Difference]: Start difference. First operand has 64 places, 51 transitions, 203 flow. Second operand 3 states and 107 transitions. [2025-03-17 19:48:40,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 54 transitions, 291 flow [2025-03-17 19:48:40,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 54 transitions, 289 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:48:40,941 INFO L231 Difference]: Finished difference. Result has 66 places, 52 transitions, 228 flow [2025-03-17 19:48:40,941 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=201, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=66, PETRI_TRANSITIONS=52} [2025-03-17 19:48:40,942 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 19 predicate places. [2025-03-17 19:48:40,942 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 52 transitions, 228 flow [2025-03-17 19:48:40,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:40,942 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:40,942 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:40,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 19:48:40,943 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-17 19:48:40,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:40,943 INFO L85 PathProgramCache]: Analyzing trace with hash -1648069077, now seen corresponding path program 1 times [2025-03-17 19:48:40,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:40,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757655959] [2025-03-17 19:48:40,943 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:40,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:40,948 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:48:40,950 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:48:40,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:40,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:40,996 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:48:40,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:40,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757655959] [2025-03-17 19:48:40,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757655959] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:40,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:40,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 19:48:40,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734648145] [2025-03-17 19:48:40,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:40,997 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:48:40,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:40,997 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:48:40,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:48:41,022 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 53 [2025-03-17 19:48:41,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 52 transitions, 228 flow. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:41,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:41,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 53 [2025-03-17 19:48:41,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:41,175 INFO L124 PetriNetUnfolderBase]: 1021/1941 cut-off events. [2025-03-17 19:48:41,176 INFO L125 PetriNetUnfolderBase]: For 1217/1320 co-relation queries the response was YES. [2025-03-17 19:48:41,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5011 conditions, 1941 events. 1021/1941 cut-off events. For 1217/1320 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 12015 event pairs, 306 based on Foata normal form. 6/1827 useless extension candidates. Maximal degree in co-relation 4995. Up to 1390 conditions per place. [2025-03-17 19:48:41,184 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 44 selfloop transitions, 9 changer transitions 6/74 dead transitions. [2025-03-17 19:48:41,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 74 transitions, 435 flow [2025-03-17 19:48:41,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:48:41,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:48:41,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2025-03-17 19:48:41,186 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.559748427672956 [2025-03-17 19:48:41,186 INFO L175 Difference]: Start difference. First operand has 66 places, 52 transitions, 228 flow. Second operand 6 states and 178 transitions. [2025-03-17 19:48:41,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 74 transitions, 435 flow [2025-03-17 19:48:41,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 74 transitions, 418 flow, removed 6 selfloop flow, removed 1 redundant places. [2025-03-17 19:48:41,191 INFO L231 Difference]: Finished difference. Result has 72 places, 51 transitions, 235 flow [2025-03-17 19:48:41,191 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=217, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=235, PETRI_PLACES=72, PETRI_TRANSITIONS=51} [2025-03-17 19:48:41,192 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 25 predicate places. [2025-03-17 19:48:41,192 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 51 transitions, 235 flow [2025-03-17 19:48:41,193 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 6 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:41,193 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:41,193 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:41,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 19:48:41,193 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-17 19:48:41,193 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:41,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1544392082, now seen corresponding path program 1 times [2025-03-17 19:48:41,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:41,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621644271] [2025-03-17 19:48:41,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:41,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:41,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:48:41,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:48:41,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:41,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:41,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:41,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:41,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621644271] [2025-03-17 19:48:41,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621644271] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:41,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:41,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:41,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242870317] [2025-03-17 19:48:41,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:41,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:48:41,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:41,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:48:41,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:48:41,223 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2025-03-17 19:48:41,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 51 transitions, 235 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:41,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:41,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2025-03-17 19:48:41,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:41,373 INFO L124 PetriNetUnfolderBase]: 982/2188 cut-off events. [2025-03-17 19:48:41,374 INFO L125 PetriNetUnfolderBase]: For 1199/1234 co-relation queries the response was YES. [2025-03-17 19:48:41,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5276 conditions, 2188 events. 982/2188 cut-off events. For 1199/1234 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 15877 event pairs, 336 based on Foata normal form. 59/2143 useless extension candidates. Maximal degree in co-relation 5257. Up to 1286 conditions per place. [2025-03-17 19:48:41,383 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 43 selfloop transitions, 5 changer transitions 0/63 dead transitions. [2025-03-17 19:48:41,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 63 transitions, 379 flow [2025-03-17 19:48:41,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:48:41,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:48:41,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2025-03-17 19:48:41,384 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6367924528301887 [2025-03-17 19:48:41,384 INFO L175 Difference]: Start difference. First operand has 72 places, 51 transitions, 235 flow. Second operand 4 states and 135 transitions. [2025-03-17 19:48:41,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 63 transitions, 379 flow [2025-03-17 19:48:41,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 63 transitions, 349 flow, removed 2 selfloop flow, removed 6 redundant places. [2025-03-17 19:48:41,388 INFO L231 Difference]: Finished difference. Result has 67 places, 50 transitions, 215 flow [2025-03-17 19:48:41,388 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=215, PETRI_PLACES=67, PETRI_TRANSITIONS=50} [2025-03-17 19:48:41,388 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 20 predicate places. [2025-03-17 19:48:41,388 INFO L471 AbstractCegarLoop]: Abstraction has has 67 places, 50 transitions, 215 flow [2025-03-17 19:48:41,388 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:41,388 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:41,388 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:41,389 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 19:48:41,389 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-17 19:48:41,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:41,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1544392363, now seen corresponding path program 1 times [2025-03-17 19:48:41,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:41,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062507026] [2025-03-17 19:48:41,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:41,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:41,392 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:48:41,394 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:48:41,394 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:41,394 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:41,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:41,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:41,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062507026] [2025-03-17 19:48:41,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062507026] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:41,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:41,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 19:48:41,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120656477] [2025-03-17 19:48:41,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:41,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 19:48:41,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:41,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 19:48:41,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 19:48:41,464 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 53 [2025-03-17 19:48:41,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 50 transitions, 215 flow. Second operand has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:41,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:41,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 53 [2025-03-17 19:48:41,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:41,710 INFO L124 PetriNetUnfolderBase]: 1446/2635 cut-off events. [2025-03-17 19:48:41,710 INFO L125 PetriNetUnfolderBase]: For 1471/1621 co-relation queries the response was YES. [2025-03-17 19:48:41,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6540 conditions, 2635 events. 1446/2635 cut-off events. For 1471/1621 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 16884 event pairs, 158 based on Foata normal form. 83/2657 useless extension candidates. Maximal degree in co-relation 6524. Up to 724 conditions per place. [2025-03-17 19:48:41,720 INFO L140 encePairwiseOnDemand]: 44/53 looper letters, 86 selfloop transitions, 15 changer transitions 0/114 dead transitions. [2025-03-17 19:48:41,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 114 transitions, 670 flow [2025-03-17 19:48:41,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 19:48:41,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 19:48:41,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 260 transitions. [2025-03-17 19:48:41,721 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5450733752620545 [2025-03-17 19:48:41,722 INFO L175 Difference]: Start difference. First operand has 67 places, 50 transitions, 215 flow. Second operand 9 states and 260 transitions. [2025-03-17 19:48:41,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 114 transitions, 670 flow [2025-03-17 19:48:41,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 114 transitions, 660 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:48:41,726 INFO L231 Difference]: Finished difference. Result has 77 places, 54 transitions, 280 flow [2025-03-17 19:48:41,726 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=280, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2025-03-17 19:48:41,726 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 30 predicate places. [2025-03-17 19:48:41,726 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 280 flow [2025-03-17 19:48:41,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.571428571428573) internal successors, (144), 7 states have internal predecessors, (144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:41,727 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:41,727 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:41,727 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 19:48:41,727 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-17 19:48:41,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:41,727 INFO L85 PathProgramCache]: Analyzing trace with hash 631514475, now seen corresponding path program 1 times [2025-03-17 19:48:41,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:41,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22122788] [2025-03-17 19:48:41,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:41,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:41,730 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:48:41,732 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:48:41,732 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:41,732 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:41,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:41,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:41,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22122788] [2025-03-17 19:48:41,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22122788] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:41,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:41,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:41,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532867717] [2025-03-17 19:48:41,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:41,751 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:48:41,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:41,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:48:41,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:48:41,754 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 25 out of 53 [2025-03-17 19:48:41,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:41,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:41,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 25 of 53 [2025-03-17 19:48:41,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:41,901 INFO L124 PetriNetUnfolderBase]: 1114/2456 cut-off events. [2025-03-17 19:48:41,901 INFO L125 PetriNetUnfolderBase]: For 2119/2222 co-relation queries the response was YES. [2025-03-17 19:48:41,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6108 conditions, 2456 events. 1114/2456 cut-off events. For 2119/2222 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 18235 event pairs, 275 based on Foata normal form. 68/2521 useless extension candidates. Maximal degree in co-relation 6089. Up to 1656 conditions per place. [2025-03-17 19:48:41,910 INFO L140 encePairwiseOnDemand]: 49/53 looper letters, 49 selfloop transitions, 6 changer transitions 0/71 dead transitions. [2025-03-17 19:48:41,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 71 transitions, 484 flow [2025-03-17 19:48:41,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:48:41,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:48:41,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 136 transitions. [2025-03-17 19:48:41,912 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6415094339622641 [2025-03-17 19:48:41,912 INFO L175 Difference]: Start difference. First operand has 77 places, 54 transitions, 280 flow. Second operand 4 states and 136 transitions. [2025-03-17 19:48:41,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 71 transitions, 484 flow [2025-03-17 19:48:41,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 71 transitions, 476 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:48:41,916 INFO L231 Difference]: Finished difference. Result has 77 places, 54 transitions, 290 flow [2025-03-17 19:48:41,916 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=290, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2025-03-17 19:48:41,917 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 30 predicate places. [2025-03-17 19:48:41,917 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 290 flow [2025-03-17 19:48:41,917 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:41,917 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:41,917 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:41,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 19:48:41,918 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-17 19:48:41,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:41,918 INFO L85 PathProgramCache]: Analyzing trace with hash 631523226, now seen corresponding path program 1 times [2025-03-17 19:48:41,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:41,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028501490] [2025-03-17 19:48:41,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:41,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:41,922 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:48:41,924 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:48:41,924 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:41,924 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:41,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:41,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:41,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028501490] [2025-03-17 19:48:41,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028501490] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:41,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:41,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:41,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490202587] [2025-03-17 19:48:41,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:41,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:48:41,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:41,960 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:48:41,960 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:48:41,977 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 53 [2025-03-17 19:48:41,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 290 flow. Second operand has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:41,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:41,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 53 [2025-03-17 19:48:41,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:42,154 INFO L124 PetriNetUnfolderBase]: 1263/2362 cut-off events. [2025-03-17 19:48:42,154 INFO L125 PetriNetUnfolderBase]: For 2778/2920 co-relation queries the response was YES. [2025-03-17 19:48:42,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6538 conditions, 2362 events. 1263/2362 cut-off events. For 2778/2920 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 15099 event pairs, 240 based on Foata normal form. 77/2419 useless extension candidates. Maximal degree in co-relation 6517. Up to 1168 conditions per place. [2025-03-17 19:48:42,163 INFO L140 encePairwiseOnDemand]: 47/53 looper letters, 72 selfloop transitions, 8 changer transitions 0/94 dead transitions. [2025-03-17 19:48:42,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 94 transitions, 625 flow [2025-03-17 19:48:42,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:48:42,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:48:42,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 196 transitions. [2025-03-17 19:48:42,164 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6163522012578616 [2025-03-17 19:48:42,164 INFO L175 Difference]: Start difference. First operand has 77 places, 54 transitions, 290 flow. Second operand 6 states and 196 transitions. [2025-03-17 19:48:42,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 94 transitions, 625 flow [2025-03-17 19:48:42,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 94 transitions, 598 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-03-17 19:48:42,171 INFO L231 Difference]: Finished difference. Result has 78 places, 53 transitions, 285 flow [2025-03-17 19:48:42,171 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=269, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=285, PETRI_PLACES=78, PETRI_TRANSITIONS=53} [2025-03-17 19:48:42,171 INFO L279 CegarLoopForPetriNet]: 47 programPoint places, 31 predicate places. [2025-03-17 19:48:42,171 INFO L471 AbstractCegarLoop]: Abstraction has has 78 places, 53 transitions, 285 flow [2025-03-17 19:48:42,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.8) internal successors, (119), 5 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:42,171 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:42,171 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:42,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 19:48:42,172 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 19 more)] === [2025-03-17 19:48:42,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:42,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1295030242, now seen corresponding path program 1 times [2025-03-17 19:48:42,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:42,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979917177] [2025-03-17 19:48:42,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:42,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:42,175 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:48:42,178 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:48:42,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:42,178 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:48:42,178 INFO L348 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2025-03-17 19:48:42,179 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:48:42,181 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:48:42,181 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:42,181 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is sat [2025-03-17 19:48:42,183 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2025-03-17 19:48:42,183 INFO L340 BasicCegarLoop]: Counterexample is feasible [2025-03-17 19:48:42,183 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2025-03-17 19:48:42,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2025-03-17 19:48:42,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2025-03-17 19:48:42,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 22 remaining) [2025-03-17 19:48:42,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2025-03-17 19:48:42,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2025-03-17 19:48:42,183 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2025-03-17 19:48:42,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2025-03-17 19:48:42,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2025-03-17 19:48:42,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2025-03-17 19:48:42,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2025-03-17 19:48:42,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2025-03-17 19:48:42,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2025-03-17 19:48:42,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2025-03-17 19:48:42,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2025-03-17 19:48:42,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2025-03-17 19:48:42,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2025-03-17 19:48:42,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2025-03-17 19:48:42,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2025-03-17 19:48:42,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2025-03-17 19:48:42,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2025-03-17 19:48:42,184 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2025-03-17 19:48:42,184 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 19:48:42,184 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:42,184 WARN L246 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2025-03-17 19:48:42,184 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2025-03-17 19:48:42,201 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-17 19:48:42,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 84 places, 73 transitions, 182 flow [2025-03-17 19:48:42,215 INFO L124 PetriNetUnfolderBase]: 4/103 cut-off events. [2025-03-17 19:48:42,215 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2025-03-17 19:48:42,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127 conditions, 103 events. 4/103 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 371 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 120. Up to 8 conditions per place. [2025-03-17 19:48:42,215 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 73 transitions, 182 flow [2025-03-17 19:48:42,216 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 48 transitions, 117 flow [2025-03-17 19:48:42,216 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:48:42,216 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;@57ba40ac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:48:42,216 INFO L334 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2025-03-17 19:48:42,217 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:48:42,217 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-17 19:48:42,217 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:48:42,217 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:42,217 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:42,217 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:48:42,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:42,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1794685154, now seen corresponding path program 1 times [2025-03-17 19:48:42,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:42,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708249744] [2025-03-17 19:48:42,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:42,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:42,221 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:48:42,222 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:48:42,222 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:42,222 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:42,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:42,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:42,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708249744] [2025-03-17 19:48:42,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708249744] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:42,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:42,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:48:42,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701493260] [2025-03-17 19:48:42,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:42,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:48:42,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:42,253 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:48:42,253 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:48:42,282 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 73 [2025-03-17 19:48:42,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 48 transitions, 117 flow. Second operand has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:42,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:42,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 73 [2025-03-17 19:48:42,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:42,951 INFO L124 PetriNetUnfolderBase]: 8710/13562 cut-off events. [2025-03-17 19:48:42,951 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2025-03-17 19:48:42,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26489 conditions, 13562 events. 8710/13562 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 695. Compared 93648 event pairs, 1571 based on Foata normal form. 400/12753 useless extension candidates. Maximal degree in co-relation 8369. Up to 4536 conditions per place. [2025-03-17 19:48:42,997 INFO L140 encePairwiseOnDemand]: 58/73 looper letters, 119 selfloop transitions, 20 changer transitions 1/157 dead transitions. [2025-03-17 19:48:42,998 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 157 transitions, 668 flow [2025-03-17 19:48:42,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:48:42,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:48:42,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 427 transitions. [2025-03-17 19:48:42,999 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.584931506849315 [2025-03-17 19:48:42,999 INFO L175 Difference]: Start difference. First operand has 57 places, 48 transitions, 117 flow. Second operand 10 states and 427 transitions. [2025-03-17 19:48:42,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 157 transitions, 668 flow [2025-03-17 19:48:43,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 157 transitions, 652 flow, removed 5 selfloop flow, removed 1 redundant places. [2025-03-17 19:48:43,001 INFO L231 Difference]: Finished difference. Result has 73 places, 68 transitions, 269 flow [2025-03-17 19:48:43,002 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=269, PETRI_PLACES=73, PETRI_TRANSITIONS=68} [2025-03-17 19:48:43,002 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 16 predicate places. [2025-03-17 19:48:43,002 INFO L471 AbstractCegarLoop]: Abstraction has has 73 places, 68 transitions, 269 flow [2025-03-17 19:48:43,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.166666666666668) internal successors, (175), 6 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:43,002 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:43,002 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:43,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-17 19:48:43,002 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:48:43,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:43,003 INFO L85 PathProgramCache]: Analyzing trace with hash -199334765, now seen corresponding path program 1 times [2025-03-17 19:48:43,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:43,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320526430] [2025-03-17 19:48:43,003 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:43,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:43,006 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:48:43,008 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:48:43,008 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:43,008 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:43,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:43,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:43,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320526430] [2025-03-17 19:48:43,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320526430] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:43,028 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:43,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:43,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486412817] [2025-03-17 19:48:43,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:43,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:48:43,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:43,029 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:48:43,029 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:48:43,048 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2025-03-17 19:48:43,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 68 transitions, 269 flow. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:43,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:43,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2025-03-17 19:48:43,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:43,534 INFO L124 PetriNetUnfolderBase]: 6487/10082 cut-off events. [2025-03-17 19:48:43,535 INFO L125 PetriNetUnfolderBase]: For 6577/7944 co-relation queries the response was YES. [2025-03-17 19:48:43,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24806 conditions, 10082 events. 6487/10082 cut-off events. For 6577/7944 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 65223 event pairs, 1511 based on Foata normal form. 771/10458 useless extension candidates. Maximal degree in co-relation 24736. Up to 5153 conditions per place. [2025-03-17 19:48:43,571 INFO L140 encePairwiseOnDemand]: 65/73 looper letters, 88 selfloop transitions, 10 changer transitions 0/118 dead transitions. [2025-03-17 19:48:43,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 118 transitions, 635 flow [2025-03-17 19:48:43,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:48:43,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:48:43,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 275 transitions. [2025-03-17 19:48:43,572 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6278538812785388 [2025-03-17 19:48:43,572 INFO L175 Difference]: Start difference. First operand has 73 places, 68 transitions, 269 flow. Second operand 6 states and 275 transitions. [2025-03-17 19:48:43,572 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 118 transitions, 635 flow [2025-03-17 19:48:43,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 118 transitions, 625 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:48:43,598 INFO L231 Difference]: Finished difference. Result has 75 places, 67 transitions, 288 flow [2025-03-17 19:48:43,598 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=288, PETRI_PLACES=75, PETRI_TRANSITIONS=67} [2025-03-17 19:48:43,598 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 18 predicate places. [2025-03-17 19:48:43,599 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 67 transitions, 288 flow [2025-03-17 19:48:43,599 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:43,599 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:43,599 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:43,599 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-17 19:48:43,599 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:48:43,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:43,599 INFO L85 PathProgramCache]: Analyzing trace with hash -198512534, now seen corresponding path program 1 times [2025-03-17 19:48:43,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:43,600 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340554857] [2025-03-17 19:48:43,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:43,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:43,603 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:48:43,604 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:48:43,604 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:43,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:43,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:43,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:43,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340554857] [2025-03-17 19:48:43,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340554857] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:43,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:43,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:48:43,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390503130] [2025-03-17 19:48:43,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:43,616 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:48:43,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:43,617 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:48:43,617 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:48:43,625 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 33 out of 73 [2025-03-17 19:48:43,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 67 transitions, 288 flow. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:43,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:43,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 33 of 73 [2025-03-17 19:48:43,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:44,030 INFO L124 PetriNetUnfolderBase]: 4756/8857 cut-off events. [2025-03-17 19:48:44,030 INFO L125 PetriNetUnfolderBase]: For 5847/6941 co-relation queries the response was YES. [2025-03-17 19:48:44,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19973 conditions, 8857 events. 4756/8857 cut-off events. For 5847/6941 co-relation queries the response was YES. Maximal size of possible extension queue 517. Compared 70795 event pairs, 3999 based on Foata normal form. 307/8109 useless extension candidates. Maximal degree in co-relation 11400. Up to 6872 conditions per place. [2025-03-17 19:48:44,057 INFO L140 encePairwiseOnDemand]: 71/73 looper letters, 40 selfloop transitions, 1 changer transitions 0/63 dead transitions. [2025-03-17 19:48:44,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 63 transitions, 344 flow [2025-03-17 19:48:44,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:48:44,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:48:44,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 124 transitions. [2025-03-17 19:48:44,058 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5662100456621004 [2025-03-17 19:48:44,058 INFO L175 Difference]: Start difference. First operand has 75 places, 67 transitions, 288 flow. Second operand 3 states and 124 transitions. [2025-03-17 19:48:44,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 63 transitions, 344 flow [2025-03-17 19:48:44,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 63 transitions, 314 flow, removed 1 selfloop flow, removed 6 redundant places. [2025-03-17 19:48:44,067 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 234 flow [2025-03-17 19:48:44,067 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=234, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2025-03-17 19:48:44,068 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 13 predicate places. [2025-03-17 19:48:44,068 INFO L471 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 234 flow [2025-03-17 19:48:44,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:44,068 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:44,068 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:44,068 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-17 19:48:44,068 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:48:44,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:44,068 INFO L85 PathProgramCache]: Analyzing trace with hash -198512501, now seen corresponding path program 1 times [2025-03-17 19:48:44,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:44,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185000950] [2025-03-17 19:48:44,069 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:44,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:44,072 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:48:44,073 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:48:44,073 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:44,073 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:44,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:44,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:44,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185000950] [2025-03-17 19:48:44,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185000950] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:44,087 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:44,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:44,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605091987] [2025-03-17 19:48:44,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:44,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:48:44,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:44,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:48:44,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:48:44,093 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 73 [2025-03-17 19:48:44,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 234 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:44,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:44,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 73 [2025-03-17 19:48:44,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:44,901 INFO L124 PetriNetUnfolderBase]: 8725/15902 cut-off events. [2025-03-17 19:48:44,901 INFO L125 PetriNetUnfolderBase]: For 4892/6034 co-relation queries the response was YES. [2025-03-17 19:48:44,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33525 conditions, 15902 events. 8725/15902 cut-off events. For 4892/6034 co-relation queries the response was YES. Maximal size of possible extension queue 816. Compared 136765 event pairs, 5443 based on Foata normal form. 376/14705 useless extension candidates. Maximal degree in co-relation 33511. Up to 9115 conditions per place. [2025-03-17 19:48:44,975 INFO L140 encePairwiseOnDemand]: 68/73 looper letters, 85 selfloop transitions, 3 changer transitions 0/108 dead transitions. [2025-03-17 19:48:44,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 108 transitions, 580 flow [2025-03-17 19:48:44,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:48:44,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:48:44,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 199 transitions. [2025-03-17 19:48:44,976 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6815068493150684 [2025-03-17 19:48:44,976 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 234 flow. Second operand 4 states and 199 transitions. [2025-03-17 19:48:44,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 108 transitions, 580 flow [2025-03-17 19:48:44,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 108 transitions, 579 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:48:44,987 INFO L231 Difference]: Finished difference. Result has 74 places, 65 transitions, 255 flow [2025-03-17 19:48:44,987 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=255, PETRI_PLACES=74, PETRI_TRANSITIONS=65} [2025-03-17 19:48:44,988 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 17 predicate places. [2025-03-17 19:48:44,988 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 65 transitions, 255 flow [2025-03-17 19:48:44,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:44,988 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:44,988 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:44,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-17 19:48:44,988 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:48:44,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:44,989 INFO L85 PathProgramCache]: Analyzing trace with hash 284380710, now seen corresponding path program 1 times [2025-03-17 19:48:44,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:44,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234570053] [2025-03-17 19:48:44,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:44,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:44,993 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:48:44,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:48:44,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:44,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:45,041 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:48:45,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:45,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234570053] [2025-03-17 19:48:45,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234570053] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:45,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:45,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 19:48:45,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103656794] [2025-03-17 19:48:45,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:45,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:48:45,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:45,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:48:45,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:48:45,075 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 30 out of 73 [2025-03-17 19:48:45,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 65 transitions, 255 flow. Second operand has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:45,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:45,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 30 of 73 [2025-03-17 19:48:45,076 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:45,590 INFO L124 PetriNetUnfolderBase]: 7603/12434 cut-off events. [2025-03-17 19:48:45,590 INFO L125 PetriNetUnfolderBase]: For 7418/7992 co-relation queries the response was YES. [2025-03-17 19:48:45,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31402 conditions, 12434 events. 7603/12434 cut-off events. For 7418/7992 co-relation queries the response was YES. Maximal size of possible extension queue 607. Compared 90262 event pairs, 2393 based on Foata normal form. 5/11762 useless extension candidates. Maximal degree in co-relation 31386. Up to 10200 conditions per place. [2025-03-17 19:48:45,641 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 53 selfloop transitions, 11 changer transitions 6/89 dead transitions. [2025-03-17 19:48:45,641 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 89 transitions, 490 flow [2025-03-17 19:48:45,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:48:45,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:48:45,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 239 transitions. [2025-03-17 19:48:45,642 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.545662100456621 [2025-03-17 19:48:45,642 INFO L175 Difference]: Start difference. First operand has 74 places, 65 transitions, 255 flow. Second operand 6 states and 239 transitions. [2025-03-17 19:48:45,642 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 89 transitions, 490 flow [2025-03-17 19:48:45,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 89 transitions, 485 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:48:45,667 INFO L231 Difference]: Finished difference. Result has 80 places, 64 transitions, 277 flow [2025-03-17 19:48:45,668 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=277, PETRI_PLACES=80, PETRI_TRANSITIONS=64} [2025-03-17 19:48:45,668 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 23 predicate places. [2025-03-17 19:48:45,668 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 64 transitions, 277 flow [2025-03-17 19:48:45,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.5) internal successors, (189), 6 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:45,668 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:45,668 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:45,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-17 19:48:45,668 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:48:45,669 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:45,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1127672742, now seen corresponding path program 1 times [2025-03-17 19:48:45,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:45,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371221239] [2025-03-17 19:48:45,669 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:45,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:45,672 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:48:45,675 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:48:45,675 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:45,675 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:45,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:45,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:45,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371221239] [2025-03-17 19:48:45,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371221239] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:45,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:45,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:48:45,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839619803] [2025-03-17 19:48:45,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:45,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:48:45,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:45,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:48:45,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:48:45,692 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 73 [2025-03-17 19:48:45,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 64 transitions, 277 flow. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:45,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:45,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 73 [2025-03-17 19:48:45,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:46,223 INFO L124 PetriNetUnfolderBase]: 7733/14541 cut-off events. [2025-03-17 19:48:46,224 INFO L125 PetriNetUnfolderBase]: For 9304/9706 co-relation queries the response was YES. [2025-03-17 19:48:46,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34326 conditions, 14541 events. 7733/14541 cut-off events. For 9304/9706 co-relation queries the response was YES. Maximal size of possible extension queue 741. Compared 127284 event pairs, 6716 based on Foata normal form. 9/12782 useless extension candidates. Maximal degree in co-relation 34307. Up to 11145 conditions per place. [2025-03-17 19:48:46,285 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 44 selfloop transitions, 4 changer transitions 0/67 dead transitions. [2025-03-17 19:48:46,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 67 transitions, 383 flow [2025-03-17 19:48:46,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:48:46,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:48:46,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 143 transitions. [2025-03-17 19:48:46,286 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6529680365296804 [2025-03-17 19:48:46,286 INFO L175 Difference]: Start difference. First operand has 80 places, 64 transitions, 277 flow. Second operand 3 states and 143 transitions. [2025-03-17 19:48:46,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 67 transitions, 383 flow [2025-03-17 19:48:46,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 67 transitions, 355 flow, removed 2 selfloop flow, removed 6 redundant places. [2025-03-17 19:48:46,299 INFO L231 Difference]: Finished difference. Result has 76 places, 65 transitions, 273 flow [2025-03-17 19:48:46,299 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=76, PETRI_TRANSITIONS=65} [2025-03-17 19:48:46,299 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 19 predicate places. [2025-03-17 19:48:46,299 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 65 transitions, 273 flow [2025-03-17 19:48:46,299 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:46,299 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:46,299 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:46,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2025-03-17 19:48:46,300 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:48:46,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:46,300 INFO L85 PathProgramCache]: Analyzing trace with hash -559044558, now seen corresponding path program 1 times [2025-03-17 19:48:46,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:46,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696288738] [2025-03-17 19:48:46,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:46,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:46,303 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:48:46,304 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:48:46,304 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:46,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:46,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:46,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:46,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696288738] [2025-03-17 19:48:46,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696288738] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:46,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:46,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:46,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391443055] [2025-03-17 19:48:46,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:46,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:48:46,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:46,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:48:46,320 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:48:46,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 73 [2025-03-17 19:48:46,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 65 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:46,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:46,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 73 [2025-03-17 19:48:46,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:46,845 INFO L124 PetriNetUnfolderBase]: 7477/13815 cut-off events. [2025-03-17 19:48:46,845 INFO L125 PetriNetUnfolderBase]: For 6900/7122 co-relation queries the response was YES. [2025-03-17 19:48:46,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32142 conditions, 13815 events. 7477/13815 cut-off events. For 6900/7122 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 118568 event pairs, 2316 based on Foata normal form. 363/13310 useless extension candidates. Maximal degree in co-relation 32125. Up to 8544 conditions per place. [2025-03-17 19:48:46,904 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 62 selfloop transitions, 5 changer transitions 0/86 dead transitions. [2025-03-17 19:48:46,904 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 86 transitions, 483 flow [2025-03-17 19:48:46,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:48:46,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:48:46,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 186 transitions. [2025-03-17 19:48:46,905 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.636986301369863 [2025-03-17 19:48:46,905 INFO L175 Difference]: Start difference. First operand has 76 places, 65 transitions, 273 flow. Second operand 4 states and 186 transitions. [2025-03-17 19:48:46,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 86 transitions, 483 flow [2025-03-17 19:48:46,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 86 transitions, 475 flow, removed 2 selfloop flow, removed 1 redundant places. [2025-03-17 19:48:46,927 INFO L231 Difference]: Finished difference. Result has 77 places, 64 transitions, 267 flow [2025-03-17 19:48:46,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=77, PETRI_TRANSITIONS=64} [2025-03-17 19:48:46,927 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 20 predicate places. [2025-03-17 19:48:46,927 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 64 transitions, 267 flow [2025-03-17 19:48:46,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:46,927 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:46,927 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:46,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2025-03-17 19:48:46,928 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:48:46,928 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:46,928 INFO L85 PathProgramCache]: Analyzing trace with hash -559044501, now seen corresponding path program 1 times [2025-03-17 19:48:46,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:46,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166767538] [2025-03-17 19:48:46,928 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:46,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:46,931 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:48:46,936 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:48:46,936 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:46,936 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:46,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:46,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:46,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166767538] [2025-03-17 19:48:46,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166767538] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:46,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:46,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-17 19:48:46,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909313595] [2025-03-17 19:48:46,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:46,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 19:48:46,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:46,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 19:48:46,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2025-03-17 19:48:47,020 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 73 [2025-03-17 19:48:47,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 64 transitions, 267 flow. Second operand has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:47,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:47,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 73 [2025-03-17 19:48:47,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:48,026 INFO L124 PetriNetUnfolderBase]: 14910/24037 cut-off events. [2025-03-17 19:48:48,026 INFO L125 PetriNetUnfolderBase]: For 12821/14113 co-relation queries the response was YES. [2025-03-17 19:48:48,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59002 conditions, 24037 events. 14910/24037 cut-off events. For 12821/14113 co-relation queries the response was YES. Maximal size of possible extension queue 1199. Compared 189610 event pairs, 3103 based on Foata normal form. 609/24100 useless extension candidates. Maximal degree in co-relation 58985. Up to 8224 conditions per place. [2025-03-17 19:48:48,121 INFO L140 encePairwiseOnDemand]: 63/73 looper letters, 111 selfloop transitions, 23 changer transitions 0/151 dead transitions. [2025-03-17 19:48:48,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 151 transitions, 886 flow [2025-03-17 19:48:48,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 19:48:48,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 19:48:48,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 363 transitions. [2025-03-17 19:48:48,123 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5525114155251142 [2025-03-17 19:48:48,123 INFO L175 Difference]: Start difference. First operand has 77 places, 64 transitions, 267 flow. Second operand 9 states and 363 transitions. [2025-03-17 19:48:48,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 151 transitions, 886 flow [2025-03-17 19:48:48,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 151 transitions, 876 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:48:48,168 INFO L231 Difference]: Finished difference. Result has 88 places, 76 transitions, 417 flow [2025-03-17 19:48:48,168 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=417, PETRI_PLACES=88, PETRI_TRANSITIONS=76} [2025-03-17 19:48:48,169 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 31 predicate places. [2025-03-17 19:48:48,169 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 76 transitions, 417 flow [2025-03-17 19:48:48,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 29.571428571428573) internal successors, (207), 7 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:48,169 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:48,169 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:48,169 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2025-03-17 19:48:48,169 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:48:48,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:48,170 INFO L85 PathProgramCache]: Analyzing trace with hash -150511852, now seen corresponding path program 1 times [2025-03-17 19:48:48,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:48,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991272866] [2025-03-17 19:48:48,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:48,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:48,173 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:48:48,174 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:48:48,174 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:48,174 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:48,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:48,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:48,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991272866] [2025-03-17 19:48:48,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991272866] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:48,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:48,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:48,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002967431] [2025-03-17 19:48:48,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:48,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:48:48,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:48,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:48:48,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:48:48,194 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 73 [2025-03-17 19:48:48,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 76 transitions, 417 flow. Second operand has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:48,194 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:48,194 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 73 [2025-03-17 19:48:48,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:49,426 INFO L124 PetriNetUnfolderBase]: 11890/21672 cut-off events. [2025-03-17 19:48:49,426 INFO L125 PetriNetUnfolderBase]: For 23774/25530 co-relation queries the response was YES. [2025-03-17 19:48:49,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54956 conditions, 21672 events. 11890/21672 cut-off events. For 23774/25530 co-relation queries the response was YES. Maximal size of possible extension queue 1173. Compared 196847 event pairs, 7147 based on Foata normal form. 525/20240 useless extension candidates. Maximal degree in co-relation 54935. Up to 17102 conditions per place. [2025-03-17 19:48:49,549 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 70 selfloop transitions, 6 changer transitions 0/96 dead transitions. [2025-03-17 19:48:49,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 96 transitions, 682 flow [2025-03-17 19:48:49,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:48:49,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:48:49,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 187 transitions. [2025-03-17 19:48:49,550 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6404109589041096 [2025-03-17 19:48:49,550 INFO L175 Difference]: Start difference. First operand has 88 places, 76 transitions, 417 flow. Second operand 4 states and 187 transitions. [2025-03-17 19:48:49,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 96 transitions, 682 flow [2025-03-17 19:48:49,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 96 transitions, 674 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:48:49,585 INFO L231 Difference]: Finished difference. Result has 89 places, 78 transitions, 443 flow [2025-03-17 19:48:49,585 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=443, PETRI_PLACES=89, PETRI_TRANSITIONS=78} [2025-03-17 19:48:49,585 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 32 predicate places. [2025-03-17 19:48:49,585 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 78 transitions, 443 flow [2025-03-17 19:48:49,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.75) internal successors, (155), 4 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:49,585 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:49,585 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:49,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2025-03-17 19:48:49,585 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:48:49,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:49,586 INFO L85 PathProgramCache]: Analyzing trace with hash -150510052, now seen corresponding path program 1 times [2025-03-17 19:48:49,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:49,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896412085] [2025-03-17 19:48:49,586 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:49,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:49,589 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:48:49,591 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:48:49,591 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:49,591 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:49,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:49,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:49,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896412085] [2025-03-17 19:48:49,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896412085] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:49,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:49,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:49,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232141332] [2025-03-17 19:48:49,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:49,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:48:49,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:49,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:48:49,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:48:49,634 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 31 out of 73 [2025-03-17 19:48:49,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 78 transitions, 443 flow. Second operand has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:49,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:49,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 31 of 73 [2025-03-17 19:48:49,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:51,055 INFO L124 PetriNetUnfolderBase]: 13621/22052 cut-off events. [2025-03-17 19:48:51,055 INFO L125 PetriNetUnfolderBase]: For 27020/29795 co-relation queries the response was YES. [2025-03-17 19:48:51,112 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61057 conditions, 22052 events. 13621/22052 cut-off events. For 27020/29795 co-relation queries the response was YES. Maximal size of possible extension queue 1159. Compared 172897 event pairs, 3938 based on Foata normal form. 683/22467 useless extension candidates. Maximal degree in co-relation 61034. Up to 10990 conditions per place. [2025-03-17 19:48:51,163 INFO L140 encePairwiseOnDemand]: 66/73 looper letters, 101 selfloop transitions, 12 changer transitions 0/132 dead transitions. [2025-03-17 19:48:51,163 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 132 transitions, 919 flow [2025-03-17 19:48:51,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:48:51,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:48:51,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 266 transitions. [2025-03-17 19:48:51,165 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6073059360730594 [2025-03-17 19:48:51,165 INFO L175 Difference]: Start difference. First operand has 89 places, 78 transitions, 443 flow. Second operand 6 states and 266 transitions. [2025-03-17 19:48:51,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 132 transitions, 919 flow [2025-03-17 19:48:51,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 132 transitions, 894 flow, removed 4 selfloop flow, removed 3 redundant places. [2025-03-17 19:48:51,262 INFO L231 Difference]: Finished difference. Result has 91 places, 77 transitions, 448 flow [2025-03-17 19:48:51,263 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=448, PETRI_PLACES=91, PETRI_TRANSITIONS=77} [2025-03-17 19:48:51,263 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 34 predicate places. [2025-03-17 19:48:51,263 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 77 transitions, 448 flow [2025-03-17 19:48:51,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 32.8) internal successors, (164), 5 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:51,263 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:51,263 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:51,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2025-03-17 19:48:51,263 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:48:51,263 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:51,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1689151170, now seen corresponding path program 1 times [2025-03-17 19:48:51,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:51,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664502535] [2025-03-17 19:48:51,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:51,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:51,266 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:48:51,268 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:48:51,268 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:51,268 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:51,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:51,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:51,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664502535] [2025-03-17 19:48:51,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664502535] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:51,323 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:51,323 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 19:48:51,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877788143] [2025-03-17 19:48:51,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:51,323 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 19:48:51,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:51,324 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 19:48:51,324 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2025-03-17 19:48:51,385 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2025-03-17 19:48:51,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 77 transitions, 448 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:51,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:51,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2025-03-17 19:48:51,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:53,606 INFO L124 PetriNetUnfolderBase]: 25611/39006 cut-off events. [2025-03-17 19:48:53,606 INFO L125 PetriNetUnfolderBase]: For 51405/53627 co-relation queries the response was YES. [2025-03-17 19:48:53,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111055 conditions, 39006 events. 25611/39006 cut-off events. For 51405/53627 co-relation queries the response was YES. Maximal size of possible extension queue 1935. Compared 301919 event pairs, 5416 based on Foata normal form. 284/38249 useless extension candidates. Maximal degree in co-relation 111031. Up to 19178 conditions per place. [2025-03-17 19:48:53,821 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 192 selfloop transitions, 36 changer transitions 0/243 dead transitions. [2025-03-17 19:48:53,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 243 transitions, 1718 flow [2025-03-17 19:48:53,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-17 19:48:53,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2025-03-17 19:48:53,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 517 transitions. [2025-03-17 19:48:53,822 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5447839831401475 [2025-03-17 19:48:53,823 INFO L175 Difference]: Start difference. First operand has 91 places, 77 transitions, 448 flow. Second operand 13 states and 517 transitions. [2025-03-17 19:48:53,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 243 transitions, 1718 flow [2025-03-17 19:48:54,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 243 transitions, 1682 flow, removed 3 selfloop flow, removed 4 redundant places. [2025-03-17 19:48:54,233 INFO L231 Difference]: Finished difference. Result has 103 places, 97 transitions, 697 flow [2025-03-17 19:48:54,233 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=697, PETRI_PLACES=103, PETRI_TRANSITIONS=97} [2025-03-17 19:48:54,233 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 46 predicate places. [2025-03-17 19:48:54,233 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 97 transitions, 697 flow [2025-03-17 19:48:54,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:54,234 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:54,234 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:54,234 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2025-03-17 19:48:54,234 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:48:54,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:54,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1623345866, now seen corresponding path program 2 times [2025-03-17 19:48:54,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:54,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769669616] [2025-03-17 19:48:54,234 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:48:54,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:54,238 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:48:54,239 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:48:54,239 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:48:54,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:54,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:54,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:54,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769669616] [2025-03-17 19:48:54,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769669616] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:54,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:54,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 19:48:54,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73907315] [2025-03-17 19:48:54,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:54,445 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 19:48:54,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:54,445 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 19:48:54,445 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-17 19:48:54,502 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2025-03-17 19:48:54,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 97 transitions, 697 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:54,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:54,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2025-03-17 19:48:54,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:57,308 INFO L124 PetriNetUnfolderBase]: 26438/40254 cut-off events. [2025-03-17 19:48:57,308 INFO L125 PetriNetUnfolderBase]: For 79340/81704 co-relation queries the response was YES. [2025-03-17 19:48:57,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122742 conditions, 40254 events. 26438/40254 cut-off events. For 79340/81704 co-relation queries the response was YES. Maximal size of possible extension queue 2010. Compared 311715 event pairs, 3552 based on Foata normal form. 378/39601 useless extension candidates. Maximal degree in co-relation 122716. Up to 11875 conditions per place. [2025-03-17 19:48:57,504 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 177 selfloop transitions, 49 changer transitions 0/241 dead transitions. [2025-03-17 19:48:57,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 241 transitions, 1821 flow [2025-03-17 19:48:57,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-17 19:48:57,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2025-03-17 19:48:57,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 538 transitions. [2025-03-17 19:48:57,505 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5264187866927593 [2025-03-17 19:48:57,505 INFO L175 Difference]: Start difference. First operand has 103 places, 97 transitions, 697 flow. Second operand 14 states and 538 transitions. [2025-03-17 19:48:57,505 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 241 transitions, 1821 flow [2025-03-17 19:48:58,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 241 transitions, 1794 flow, removed 6 selfloop flow, removed 5 redundant places. [2025-03-17 19:48:58,507 INFO L231 Difference]: Finished difference. Result has 114 places, 106 transitions, 895 flow [2025-03-17 19:48:58,507 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=895, PETRI_PLACES=114, PETRI_TRANSITIONS=106} [2025-03-17 19:48:58,508 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 57 predicate places. [2025-03-17 19:48:58,508 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 106 transitions, 895 flow [2025-03-17 19:48:58,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:58,508 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:58,508 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:58,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2025-03-17 19:48:58,508 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:48:58,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:58,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1645856850, now seen corresponding path program 1 times [2025-03-17 19:48:58,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:58,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808952109] [2025-03-17 19:48:58,508 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:58,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:58,511 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:48:58,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:48:58,513 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:58,513 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:58,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:58,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:58,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808952109] [2025-03-17 19:48:58,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808952109] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:48:58,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749561568] [2025-03-17 19:48:58,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:58,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:48:58,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:48:58,547 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:48:58,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 19:48:58,597 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:48:58,604 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:48:58,605 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:58,605 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:58,606 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:48:58,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:48:58,646 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:58,647 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:48:58,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749561568] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:58,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:48:58,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-17 19:48:58,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503145483] [2025-03-17 19:48:58,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:58,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:48:58,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:58,648 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:48:58,648 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:48:58,655 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 73 [2025-03-17 19:48:58,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 106 transitions, 895 flow. Second operand has 6 states, 6 states have (on average 39.166666666666664) internal successors, (235), 6 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:58,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:58,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 73 [2025-03-17 19:48:58,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:49:01,394 INFO L124 PetriNetUnfolderBase]: 22941/41464 cut-off events. [2025-03-17 19:49:01,394 INFO L125 PetriNetUnfolderBase]: For 104155/108210 co-relation queries the response was YES. [2025-03-17 19:49:01,501 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117714 conditions, 41464 events. 22941/41464 cut-off events. For 104155/108210 co-relation queries the response was YES. Maximal size of possible extension queue 2059. Compared 404375 event pairs, 5368 based on Foata normal form. 2060/41526 useless extension candidates. Maximal degree in co-relation 117685. Up to 9050 conditions per place. [2025-03-17 19:49:01,597 INFO L140 encePairwiseOnDemand]: 69/73 looper letters, 281 selfloop transitions, 5 changer transitions 0/314 dead transitions. [2025-03-17 19:49:01,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 314 transitions, 3689 flow [2025-03-17 19:49:01,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:49:01,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:49:01,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 291 transitions. [2025-03-17 19:49:01,598 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6643835616438356 [2025-03-17 19:49:01,598 INFO L175 Difference]: Start difference. First operand has 114 places, 106 transitions, 895 flow. Second operand 6 states and 291 transitions. [2025-03-17 19:49:01,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 314 transitions, 3689 flow [2025-03-17 19:49:01,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 314 transitions, 3544 flow, removed 25 selfloop flow, removed 8 redundant places. [2025-03-17 19:49:01,951 INFO L231 Difference]: Finished difference. Result has 110 places, 105 transitions, 856 flow [2025-03-17 19:49:01,951 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=846, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=856, PETRI_PLACES=110, PETRI_TRANSITIONS=105} [2025-03-17 19:49:01,951 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 53 predicate places. [2025-03-17 19:49:01,952 INFO L471 AbstractCegarLoop]: Abstraction has has 110 places, 105 transitions, 856 flow [2025-03-17 19:49:01,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 39.166666666666664) internal successors, (235), 6 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:01,952 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:49:01,952 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:49:01,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-17 19:49:02,152 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2025-03-17 19:49:02,152 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:49:02,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:02,153 INFO L85 PathProgramCache]: Analyzing trace with hash 101193102, now seen corresponding path program 1 times [2025-03-17 19:49:02,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:02,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120779981] [2025-03-17 19:49:02,153 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:02,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:02,155 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:49:02,157 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:49:02,157 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:02,157 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:49:02,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:49:02,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:49:02,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120779981] [2025-03-17 19:49:02,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120779981] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:49:02,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:49:02,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-17 19:49:02,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534654097] [2025-03-17 19:49:02,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:49:02,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-17 19:49:02,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:49:02,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-17 19:49:02,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2025-03-17 19:49:02,263 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 73 [2025-03-17 19:49:02,264 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 105 transitions, 856 flow. Second operand has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:02,264 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:49:02,264 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 73 [2025-03-17 19:49:02,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:49:05,076 INFO L124 PetriNetUnfolderBase]: 27265/41851 cut-off events. [2025-03-17 19:49:05,076 INFO L125 PetriNetUnfolderBase]: For 128122/129454 co-relation queries the response was YES. [2025-03-17 19:49:05,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140069 conditions, 41851 events. 27265/41851 cut-off events. For 128122/129454 co-relation queries the response was YES. Maximal size of possible extension queue 2087. Compared 330273 event pairs, 5813 based on Foata normal form. 400/41365 useless extension candidates. Maximal degree in co-relation 140039. Up to 16318 conditions per place. [2025-03-17 19:49:05,344 INFO L140 encePairwiseOnDemand]: 61/73 looper letters, 190 selfloop transitions, 49 changer transitions 0/253 dead transitions. [2025-03-17 19:49:05,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 253 transitions, 2170 flow [2025-03-17 19:49:05,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 19:49:05,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 19:49:05,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 480 transitions. [2025-03-17 19:49:05,345 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2025-03-17 19:49:05,346 INFO L175 Difference]: Start difference. First operand has 110 places, 105 transitions, 856 flow. Second operand 12 states and 480 transitions. [2025-03-17 19:49:05,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 253 transitions, 2170 flow [2025-03-17 19:49:06,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 253 transitions, 2086 flow, removed 14 selfloop flow, removed 4 redundant places. [2025-03-17 19:49:06,712 INFO L231 Difference]: Finished difference. Result has 120 places, 116 transitions, 1080 flow [2025-03-17 19:49:06,712 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=845, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1080, PETRI_PLACES=120, PETRI_TRANSITIONS=116} [2025-03-17 19:49:06,713 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 63 predicate places. [2025-03-17 19:49:06,713 INFO L471 AbstractCegarLoop]: Abstraction has has 120 places, 116 transitions, 1080 flow [2025-03-17 19:49:06,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 27.444444444444443) internal successors, (247), 9 states have internal predecessors, (247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:06,713 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:49:06,713 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:49:06,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2025-03-17 19:49:06,713 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:49:06,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:06,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1463455739, now seen corresponding path program 1 times [2025-03-17 19:49:06,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:06,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229877321] [2025-03-17 19:49:06,713 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:06,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:06,717 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:49:06,719 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:49:06,719 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:06,719 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:49:06,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:49:06,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:49:06,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229877321] [2025-03-17 19:49:06,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229877321] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:49:06,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:49:06,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:49:06,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319610636] [2025-03-17 19:49:06,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:49:06,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 19:49:06,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:49:06,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 19:49:06,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 19:49:06,796 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 73 [2025-03-17 19:49:06,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 116 transitions, 1080 flow. Second operand has 7 states, 7 states have (on average 30.714285714285715) internal successors, (215), 7 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:06,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:49:06,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 73 [2025-03-17 19:49:06,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:49:09,756 INFO L124 PetriNetUnfolderBase]: 25328/38716 cut-off events. [2025-03-17 19:49:09,756 INFO L125 PetriNetUnfolderBase]: For 145475/149398 co-relation queries the response was YES. [2025-03-17 19:49:09,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131450 conditions, 38716 events. 25328/38716 cut-off events. For 145475/149398 co-relation queries the response was YES. Maximal size of possible extension queue 1981. Compared 300636 event pairs, 3714 based on Foata normal form. 786/39034 useless extension candidates. Maximal degree in co-relation 131418. Up to 11581 conditions per place. [2025-03-17 19:49:09,925 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 215 selfloop transitions, 46 changer transitions 0/277 dead transitions. [2025-03-17 19:49:09,925 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 277 transitions, 2355 flow [2025-03-17 19:49:09,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 19:49:09,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 19:49:09,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 531 transitions. [2025-03-17 19:49:09,926 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6061643835616438 [2025-03-17 19:49:09,926 INFO L175 Difference]: Start difference. First operand has 120 places, 116 transitions, 1080 flow. Second operand 12 states and 531 transitions. [2025-03-17 19:49:09,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 277 transitions, 2355 flow [2025-03-17 19:49:10,924 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 277 transitions, 2286 flow, removed 1 selfloop flow, removed 7 redundant places. [2025-03-17 19:49:10,926 INFO L231 Difference]: Finished difference. Result has 124 places, 121 transitions, 1171 flow [2025-03-17 19:49:10,926 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=978, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1171, PETRI_PLACES=124, PETRI_TRANSITIONS=121} [2025-03-17 19:49:10,927 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 67 predicate places. [2025-03-17 19:49:10,927 INFO L471 AbstractCegarLoop]: Abstraction has has 124 places, 121 transitions, 1171 flow [2025-03-17 19:49:10,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.714285714285715) internal successors, (215), 7 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:10,927 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:49:10,927 INFO L206 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:49:10,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2025-03-17 19:49:10,927 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:49:10,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:10,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1475944803, now seen corresponding path program 1 times [2025-03-17 19:49:10,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:10,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415662162] [2025-03-17 19:49:10,927 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:10,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:10,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:49:10,932 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:49:10,932 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:10,932 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:49:10,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:49:10,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:49:10,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415662162] [2025-03-17 19:49:10,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415662162] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:49:10,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:49:10,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2025-03-17 19:49:10,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873488331] [2025-03-17 19:49:10,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:49:10,975 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-17 19:49:10,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:49:10,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-17 19:49:10,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:49:11,047 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 73 [2025-03-17 19:49:11,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 121 transitions, 1171 flow. Second operand has 8 states, 8 states have (on average 29.875) internal successors, (239), 8 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:11,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:49:11,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 73 [2025-03-17 19:49:11,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:49:15,076 INFO L124 PetriNetUnfolderBase]: 37542/60818 cut-off events. [2025-03-17 19:49:15,076 INFO L125 PetriNetUnfolderBase]: For 199399/203233 co-relation queries the response was YES. [2025-03-17 19:49:15,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192658 conditions, 60818 events. 37542/60818 cut-off events. For 199399/203233 co-relation queries the response was YES. Maximal size of possible extension queue 3133. Compared 550950 event pairs, 18931 based on Foata normal form. 2087/61401 useless extension candidates. Maximal degree in co-relation 192625. Up to 23657 conditions per place. [2025-03-17 19:49:15,430 INFO L140 encePairwiseOnDemand]: 62/73 looper letters, 180 selfloop transitions, 103 changer transitions 0/312 dead transitions. [2025-03-17 19:49:15,430 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 312 transitions, 3460 flow [2025-03-17 19:49:15,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 19:49:15,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 19:49:15,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 480 transitions. [2025-03-17 19:49:15,431 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.547945205479452 [2025-03-17 19:49:15,431 INFO L175 Difference]: Start difference. First operand has 124 places, 121 transitions, 1171 flow. Second operand 12 states and 480 transitions. [2025-03-17 19:49:15,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 312 transitions, 3460 flow [2025-03-17 19:49:16,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 312 transitions, 3282 flow, removed 11 selfloop flow, removed 5 redundant places. [2025-03-17 19:49:16,711 INFO L231 Difference]: Finished difference. Result has 138 places, 203 transitions, 2578 flow [2025-03-17 19:49:16,711 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2578, PETRI_PLACES=138, PETRI_TRANSITIONS=203} [2025-03-17 19:49:16,711 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 81 predicate places. [2025-03-17 19:49:16,711 INFO L471 AbstractCegarLoop]: Abstraction has has 138 places, 203 transitions, 2578 flow [2025-03-17 19:49:16,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 29.875) internal successors, (239), 8 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:16,712 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:49:16,712 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:49:16,712 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2025-03-17 19:49:16,712 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:49:16,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:16,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1157980825, now seen corresponding path program 1 times [2025-03-17 19:49:16,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:16,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672796363] [2025-03-17 19:49:16,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:16,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:16,715 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:49:16,716 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:49:16,716 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:16,716 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:49:16,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:49:16,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:49:16,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672796363] [2025-03-17 19:49:16,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672796363] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:49:16,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:49:16,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:49:16,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460135336] [2025-03-17 19:49:16,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:49:16,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-17 19:49:16,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:49:16,745 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-17 19:49:16,746 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2025-03-17 19:49:16,782 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 73 [2025-03-17 19:49:16,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 203 transitions, 2578 flow. Second operand has 7 states, 7 states have (on average 30.571428571428573) internal successors, (214), 7 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:16,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:49:16,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 73 [2025-03-17 19:49:16,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:49:21,057 INFO L124 PetriNetUnfolderBase]: 35289/56361 cut-off events. [2025-03-17 19:49:21,058 INFO L125 PetriNetUnfolderBase]: For 235933/242107 co-relation queries the response was YES. [2025-03-17 19:49:21,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 195750 conditions, 56361 events. 35289/56361 cut-off events. For 235933/242107 co-relation queries the response was YES. Maximal size of possible extension queue 3083. Compared 495311 event pairs, 7872 based on Foata normal form. 901/56644 useless extension candidates. Maximal degree in co-relation 195710. Up to 18806 conditions per place. [2025-03-17 19:49:21,394 INFO L140 encePairwiseOnDemand]: 64/73 looper letters, 255 selfloop transitions, 93 changer transitions 0/365 dead transitions. [2025-03-17 19:49:21,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 365 transitions, 4124 flow [2025-03-17 19:49:21,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-17 19:49:21,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2025-03-17 19:49:21,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 531 transitions. [2025-03-17 19:49:21,395 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6061643835616438 [2025-03-17 19:49:21,395 INFO L175 Difference]: Start difference. First operand has 138 places, 203 transitions, 2578 flow. Second operand 12 states and 531 transitions. [2025-03-17 19:49:21,395 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 365 transitions, 4124 flow [2025-03-17 19:49:23,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 365 transitions, 4088 flow, removed 16 selfloop flow, removed 1 redundant places. [2025-03-17 19:49:23,884 INFO L231 Difference]: Finished difference. Result has 148 places, 201 transitions, 2723 flow [2025-03-17 19:49:23,884 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=73, PETRI_DIFFERENCE_MINUEND_FLOW=2510, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2723, PETRI_PLACES=148, PETRI_TRANSITIONS=201} [2025-03-17 19:49:23,885 INFO L279 CegarLoopForPetriNet]: 57 programPoint places, 91 predicate places. [2025-03-17 19:49:23,885 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 201 transitions, 2723 flow [2025-03-17 19:49:23,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.571428571428573) internal successors, (214), 7 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:23,885 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:49:23,885 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:49:23,885 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2025-03-17 19:49:23,885 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 25 more)] === [2025-03-17 19:49:23,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:49:23,885 INFO L85 PathProgramCache]: Analyzing trace with hash 518045534, now seen corresponding path program 1 times [2025-03-17 19:49:23,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:49:23,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630243616] [2025-03-17 19:49:23,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:23,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:49:23,889 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:49:23,890 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:49:23,890 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:23,890 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:49:23,916 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:49:23,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:49:23,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630243616] [2025-03-17 19:49:23,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630243616] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:49:23,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619527572] [2025-03-17 19:49:23,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:49:23,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:49:23,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:49:23,918 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:49:23,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 19:49:23,961 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:49:23,968 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:49:23,968 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:49:23,968 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:49:23,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:49:23,970 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:49:23,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:49:23,987 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:49:24,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:49:24,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619527572] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:49:24,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:49:24,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-17 19:49:24,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274384759] [2025-03-17 19:49:24,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:49:24,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:49:24,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:49:24,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:49:24,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:49:24,030 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 73 [2025-03-17 19:49:24,032 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 201 transitions, 2723 flow. Second operand has 12 states, 12 states have (on average 38.75) internal successors, (465), 12 states have internal predecessors, (465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:49:24,032 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:49:24,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 73 [2025-03-17 19:49:24,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand