./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-theta/unwind2-nondet.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-theta/unwind2-nondet.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:45:39,844 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:45:39,895 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:45:39,901 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:45:39,901 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:45:39,925 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:45:39,926 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:45:39,926 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:45:39,927 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:45:39,927 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:45:39,928 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:45:39,928 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:45:39,928 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:45:39,928 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:45:39,928 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:45:39,928 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:45:39,928 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:45:39,929 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:45:39,929 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:45:39,929 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:45:39,929 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:45:39,929 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:45:39,929 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:45:39,929 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:45:39,929 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:45:39,929 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:45:39,929 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:45:39,929 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:45:39,930 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:45:39,930 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:45:39,930 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:45:39,930 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:45:39,930 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:45:39,930 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:45:39,930 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:45:39,931 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:45:39,931 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:45:39,931 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:45:39,931 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:45:39,931 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:45:39,931 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:45:39,931 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:45:39,931 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:45:39,931 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:45:39,931 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:45:39,931 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 797a9e1bf9dc9387a2e0877719131f75c1f5b0797aa4bcc7c94038568bc56c2d [2025-03-09 06:45:40,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:45:40,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:45:40,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:45:40,182 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:45:40,183 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:45:40,183 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind2-nondet.i [2025-03-09 06:45:41,295 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43038df1b/0133f6ce20b84e3cb0140f7fda4cd303/FLAG248608352 [2025-03-09 06:45:41,545 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:45:41,546 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind2-nondet.i [2025-03-09 06:45:41,558 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43038df1b/0133f6ce20b84e3cb0140f7fda4cd303/FLAG248608352 [2025-03-09 06:45:41,570 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/43038df1b/0133f6ce20b84e3cb0140f7fda4cd303 [2025-03-09 06:45:41,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:45:41,572 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:45:41,573 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:45:41,573 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:45:41,576 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:45:41,577 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:45:41" (1/1) ... [2025-03-09 06:45:41,577 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62a0765c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:41, skipping insertion in model container [2025-03-09 06:45:41,577 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:45:41" (1/1) ... [2025-03-09 06:45:41,602 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:45:41,858 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:45:41,864 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:45:41,894 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:45:41,921 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:45:41,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:41 WrapperNode [2025-03-09 06:45:41,922 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:45:41,923 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:45:41,923 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:45:41,923 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:45:41,928 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:41" (1/1) ... [2025-03-09 06:45:41,936 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:41" (1/1) ... [2025-03-09 06:45:41,947 INFO L138 Inliner]: procedures = 169, calls = 12, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 88 [2025-03-09 06:45:41,948 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:45:41,948 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:45:41,948 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:45:41,948 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:45:41,953 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:41" (1/1) ... [2025-03-09 06:45:41,953 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:41" (1/1) ... [2025-03-09 06:45:41,954 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:41" (1/1) ... [2025-03-09 06:45:41,963 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]. [2025-03-09 06:45:41,963 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:41" (1/1) ... [2025-03-09 06:45:41,963 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:41" (1/1) ... [2025-03-09 06:45:41,966 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:41" (1/1) ... [2025-03-09 06:45:41,966 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:41" (1/1) ... [2025-03-09 06:45:41,967 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:41" (1/1) ... [2025-03-09 06:45:41,968 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:41" (1/1) ... [2025-03-09 06:45:41,969 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:45:41,969 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:45:41,970 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:45:41,970 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:45:41,970 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:41" (1/1) ... [2025-03-09 06:45:41,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:45:41,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:45:41,993 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) [2025-03-09 06:45:41,994 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 [2025-03-09 06:45:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:45:42,008 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-03-09 06:45:42,009 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-03-09 06:45:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-03-09 06:45:42,009 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-03-09 06:45:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:45:42,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:45:42,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:45:42,009 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:45:42,093 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:45:42,094 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:45:42,243 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:45:42,243 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:45:42,320 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:45:42,322 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:45:42,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:45:42 BoogieIcfgContainer [2025-03-09 06:45:42,323 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:45:42,324 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:45:42,324 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:45:42,327 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:45:42,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:45:41" (1/3) ... [2025-03-09 06:45:42,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3620aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:45:42, skipping insertion in model container [2025-03-09 06:45:42,328 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:45:41" (2/3) ... [2025-03-09 06:45:42,328 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3620aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:45:42, skipping insertion in model container [2025-03-09 06:45:42,329 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:45:42" (3/3) ... [2025-03-09 06:45:42,330 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind2-nondet.i [2025-03-09 06:45:42,340 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:45:42,341 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind2-nondet.i that has 3 procedures, 31 locations, 1 initial locations, 2 loop locations, and 6 error locations. [2025-03-09 06:45:42,341 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:45:42,381 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-09 06:45:42,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 32 transitions, 78 flow [2025-03-09 06:45:42,431 INFO L124 PetriNetUnfolderBase]: 2/30 cut-off events. [2025-03-09 06:45:42,433 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-09 06:45:42,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39 conditions, 30 events. 2/30 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 54 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2025-03-09 06:45:42,437 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 32 transitions, 78 flow [2025-03-09 06:45:42,439 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 28 transitions, 65 flow [2025-03-09 06:45:42,444 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:45:42,453 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;@485aaae7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:45:42,453 INFO L334 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2025-03-09 06:45:42,458 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:45:42,458 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-03-09 06:45:42,458 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:45:42,458 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:42,458 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-09 06:45:42,459 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-09 06:45:42,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:42,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1426146900, now seen corresponding path program 1 times [2025-03-09 06:45:42,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:42,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938456603] [2025-03-09 06:45:42,467 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:42,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:42,528 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-09 06:45:42,538 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-09 06:45:42,539 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:42,539 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:42,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:42,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:42,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938456603] [2025-03-09 06:45:42,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938456603] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:42,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:42,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:45:42,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296730542] [2025-03-09 06:45:42,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:42,628 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:45:42,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:42,647 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:45:42,647 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:45:42,656 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-09 06:45:42,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:42,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:42,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-09 06:45:42,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:42,737 INFO L124 PetriNetUnfolderBase]: 165/355 cut-off events. [2025-03-09 06:45:42,738 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2025-03-09 06:45:42,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663 conditions, 355 events. 165/355 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1567 event pairs, 134 based on Foata normal form. 13/295 useless extension candidates. Maximal degree in co-relation 610. Up to 282 conditions per place. [2025-03-09 06:45:42,742 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 19 selfloop transitions, 1 changer transitions 0/27 dead transitions. [2025-03-09 06:45:42,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 27 transitions, 103 flow [2025-03-09 06:45:42,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:45:42,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:45:42,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2025-03-09 06:45:42,751 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5 [2025-03-09 06:45:42,752 INFO L175 Difference]: Start difference. First operand has 33 places, 28 transitions, 65 flow. Second operand 3 states and 48 transitions. [2025-03-09 06:45:42,752 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 27 transitions, 103 flow [2025-03-09 06:45:42,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 27 transitions, 98 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:45:42,759 INFO L231 Difference]: Finished difference. Result has 31 places, 27 transitions, 60 flow [2025-03-09 06:45:42,761 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=31, PETRI_TRANSITIONS=27} [2025-03-09 06:45:42,765 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, -2 predicate places. [2025-03-09 06:45:42,765 INFO L471 AbstractCegarLoop]: Abstraction has has 31 places, 27 transitions, 60 flow [2025-03-09 06:45:42,765 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:42,765 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:42,765 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:42,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:45:42,766 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-09 06:45:42,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:42,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1249537315, now seen corresponding path program 1 times [2025-03-09 06:45:42,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:42,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408119082] [2025-03-09 06:45:42,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:42,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:42,781 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:45:42,786 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:45:42,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:42,787 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:42,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:42,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:42,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408119082] [2025-03-09 06:45:42,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408119082] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:42,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:42,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:42,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305439517] [2025-03-09 06:45:42,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:42,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:45:42,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:42,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:45:42,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:45:42,866 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-09 06:45:42,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 27 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:42,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:42,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-09 06:45:42,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:43,037 INFO L124 PetriNetUnfolderBase]: 268/541 cut-off events. [2025-03-09 06:45:43,037 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-09 06:45:43,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 541 events. 268/541 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2452 event pairs, 159 based on Foata normal form. 16/465 useless extension candidates. Maximal degree in co-relation 1021. Up to 329 conditions per place. [2025-03-09 06:45:43,043 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 42 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2025-03-09 06:45:43,044 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 51 transitions, 203 flow [2025-03-09 06:45:43,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:45:43,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:45:43,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2025-03-09 06:45:43,046 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6484375 [2025-03-09 06:45:43,046 INFO L175 Difference]: Start difference. First operand has 31 places, 27 transitions, 60 flow. Second operand 4 states and 83 transitions. [2025-03-09 06:45:43,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 51 transitions, 203 flow [2025-03-09 06:45:43,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 51 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:45:43,049 INFO L231 Difference]: Finished difference. Result has 35 places, 29 transitions, 81 flow [2025-03-09 06:45:43,050 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=81, PETRI_PLACES=35, PETRI_TRANSITIONS=29} [2025-03-09 06:45:43,050 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2025-03-09 06:45:43,050 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 29 transitions, 81 flow [2025-03-09 06:45:43,051 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.75) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:43,051 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:43,051 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:43,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 06:45:43,052 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-09 06:45:43,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:43,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1260880736, now seen corresponding path program 1 times [2025-03-09 06:45:43,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:43,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017571969] [2025-03-09 06:45:43,053 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:43,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:43,065 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:45:43,074 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:45:43,074 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:43,074 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:43,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:43,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:43,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017571969] [2025-03-09 06:45:43,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017571969] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:43,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:43,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:45:43,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37084915] [2025-03-09 06:45:43,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:43,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:45:43,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:43,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:45:43,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:45:43,123 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-09 06:45:43,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:43,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:43,123 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-09 06:45:43,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:43,179 INFO L124 PetriNetUnfolderBase]: 222/483 cut-off events. [2025-03-09 06:45:43,180 INFO L125 PetriNetUnfolderBase]: For 131/139 co-relation queries the response was YES. [2025-03-09 06:45:43,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 483 events. 222/483 cut-off events. For 131/139 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2249 event pairs, 186 based on Foata normal form. 0/437 useless extension candidates. Maximal degree in co-relation 1013. Up to 381 conditions per place. [2025-03-09 06:45:43,184 INFO L140 encePairwiseOnDemand]: 30/32 looper letters, 20 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2025-03-09 06:45:43,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 28 transitions, 121 flow [2025-03-09 06:45:43,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:45:43,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:45:43,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 47 transitions. [2025-03-09 06:45:43,186 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4895833333333333 [2025-03-09 06:45:43,186 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 81 flow. Second operand 3 states and 47 transitions. [2025-03-09 06:45:43,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 28 transitions, 121 flow [2025-03-09 06:45:43,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 28 transitions, 119 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:45:43,187 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 79 flow [2025-03-09 06:45:43,189 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2025-03-09 06:45:43,189 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 2 predicate places. [2025-03-09 06:45:43,189 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 79 flow [2025-03-09 06:45:43,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.0) internal successors, (33), 3 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:43,190 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:43,190 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:43,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:45:43,190 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-09 06:45:43,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:43,190 INFO L85 PathProgramCache]: Analyzing trace with hash -484397298, now seen corresponding path program 1 times [2025-03-09 06:45:43,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:43,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616388211] [2025-03-09 06:45:43,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:43,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:43,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:45:43,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:45:43,205 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:43,205 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:43,260 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:43,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:43,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616388211] [2025-03-09 06:45:43,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616388211] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:45:43,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287408112] [2025-03-09 06:45:43,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:43,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:45:43,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:45:43,263 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) [2025-03-09 06:45:43,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-09 06:45:43,301 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-09 06:45:43,308 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-09 06:45:43,309 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:43,309 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:43,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:45:43,312 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:45:43,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:43,346 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:45:43,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287408112] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:43,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:45:43,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-09 06:45:43,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921296425] [2025-03-09 06:45:43,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:43,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:45:43,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:43,347 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:45:43,347 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:45:43,356 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-09 06:45:43,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 79 flow. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:43,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:43,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-09 06:45:43,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:43,526 INFO L124 PetriNetUnfolderBase]: 245/473 cut-off events. [2025-03-09 06:45:43,526 INFO L125 PetriNetUnfolderBase]: For 46/46 co-relation queries the response was YES. [2025-03-09 06:45:43,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 473 events. 245/473 cut-off events. For 46/46 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2039 event pairs, 48 based on Foata normal form. 16/442 useless extension candidates. Maximal degree in co-relation 1024. Up to 108 conditions per place. [2025-03-09 06:45:43,528 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 59 selfloop transitions, 5 changer transitions 0/69 dead transitions. [2025-03-09 06:45:43,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 69 transitions, 296 flow [2025-03-09 06:45:43,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:45:43,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:45:43,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 119 transitions. [2025-03-09 06:45:43,529 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6197916666666666 [2025-03-09 06:45:43,530 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 79 flow. Second operand 6 states and 119 transitions. [2025-03-09 06:45:43,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 69 transitions, 296 flow [2025-03-09 06:45:43,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 69 transitions, 295 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:45:43,533 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 84 flow [2025-03-09 06:45:43,533 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=84, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2025-03-09 06:45:43,534 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2025-03-09 06:45:43,535 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 84 flow [2025-03-09 06:45:43,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:43,535 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:43,535 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:43,541 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-09 06:45:43,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:45:43,739 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-09 06:45:43,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:43,740 INFO L85 PathProgramCache]: Analyzing trace with hash -2131414151, now seen corresponding path program 1 times [2025-03-09 06:45:43,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:43,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693207426] [2025-03-09 06:45:43,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:43,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:43,747 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:45:43,753 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:45:43,753 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:43,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:43,810 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:43,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:43,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693207426] [2025-03-09 06:45:43,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693207426] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:45:43,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320406142] [2025-03-09 06:45:43,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:43,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:45:43,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:45:43,813 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) [2025-03-09 06:45:43,814 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-09 06:45:43,848 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:45:43,855 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:45:43,855 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:43,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:43,856 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:45:43,856 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:45:43,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:43,886 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:45:43,928 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:43,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320406142] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:45:43,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:45:43,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-09 06:45:43,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977842838] [2025-03-09 06:45:43,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:45:43,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:45:43,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:43,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:45:43,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:45:43,941 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-09 06:45:43,941 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 84 flow. Second operand has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:43,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:43,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-09 06:45:43,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:44,197 INFO L124 PetriNetUnfolderBase]: 473/921 cut-off events. [2025-03-09 06:45:44,198 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2025-03-09 06:45:44,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2164 conditions, 921 events. 473/921 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4221 event pairs, 138 based on Foata normal form. 48/914 useless extension candidates. Maximal degree in co-relation 2155. Up to 290 conditions per place. [2025-03-09 06:45:44,203 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 107 selfloop transitions, 9 changer transitions 0/121 dead transitions. [2025-03-09 06:45:44,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 121 transitions, 548 flow [2025-03-09 06:45:44,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:45:44,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:45:44,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 209 transitions. [2025-03-09 06:45:44,206 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.653125 [2025-03-09 06:45:44,206 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 84 flow. Second operand 10 states and 209 transitions. [2025-03-09 06:45:44,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 121 transitions, 548 flow [2025-03-09 06:45:44,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 121 transitions, 533 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-03-09 06:45:44,209 INFO L231 Difference]: Finished difference. Result has 46 places, 33 transitions, 139 flow [2025-03-09 06:45:44,209 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=139, PETRI_PLACES=46, PETRI_TRANSITIONS=33} [2025-03-09 06:45:44,210 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 13 predicate places. [2025-03-09 06:45:44,210 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 33 transitions, 139 flow [2025-03-09 06:45:44,210 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.416666666666666) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:44,210 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:44,210 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:44,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-09 06:45:44,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:45:44,416 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-09 06:45:44,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:44,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1703320421, now seen corresponding path program 1 times [2025-03-09 06:45:44,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:44,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128524253] [2025-03-09 06:45:44,416 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:44,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:44,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-09 06:45:44,427 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-09 06:45:44,427 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:44,427 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:44,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:44,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128524253] [2025-03-09 06:45:44,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128524253] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:44,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:45:44,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-09 06:45:44,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683290811] [2025-03-09 06:45:44,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:44,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:45:44,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:44,457 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:45:44,457 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:45:44,461 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-09 06:45:44,461 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 33 transitions, 139 flow. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:44,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:44,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-09 06:45:44,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:44,593 INFO L124 PetriNetUnfolderBase]: 745/1441 cut-off events. [2025-03-09 06:45:44,593 INFO L125 PetriNetUnfolderBase]: For 1342/1346 co-relation queries the response was YES. [2025-03-09 06:45:44,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3621 conditions, 1441 events. 745/1441 cut-off events. For 1342/1346 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7294 event pairs, 507 based on Foata normal form. 41/1353 useless extension candidates. Maximal degree in co-relation 3610. Up to 975 conditions per place. [2025-03-09 06:45:44,600 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 61 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2025-03-09 06:45:44,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 68 transitions, 457 flow [2025-03-09 06:45:44,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:45:44,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:45:44,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 78 transitions. [2025-03-09 06:45:44,601 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.609375 [2025-03-09 06:45:44,601 INFO L175 Difference]: Start difference. First operand has 46 places, 33 transitions, 139 flow. Second operand 4 states and 78 transitions. [2025-03-09 06:45:44,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 68 transitions, 457 flow [2025-03-09 06:45:44,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 68 transitions, 427 flow, removed 9 selfloop flow, removed 2 redundant places. [2025-03-09 06:45:44,605 INFO L231 Difference]: Finished difference. Result has 49 places, 35 transitions, 151 flow [2025-03-09 06:45:44,605 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=49, PETRI_TRANSITIONS=35} [2025-03-09 06:45:44,606 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 16 predicate places. [2025-03-09 06:45:44,606 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 35 transitions, 151 flow [2025-03-09 06:45:44,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:44,606 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:44,606 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:44,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-09 06:45:44,606 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-09 06:45:44,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:44,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1419727885, now seen corresponding path program 1 times [2025-03-09 06:45:44,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:44,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024464673] [2025-03-09 06:45:44,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:44,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:44,611 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:45:44,614 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:45:44,614 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:44,614 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:44,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:44,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:44,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024464673] [2025-03-09 06:45:44,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024464673] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:45:44,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59445170] [2025-03-09 06:45:44,684 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:44,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:45:44,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:45:44,686 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:45:44,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-09 06:45:44,718 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-09 06:45:44,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-09 06:45:44,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:44,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:44,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:45:44,727 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:45:44,746 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:44,747 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-09 06:45:44,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [59445170] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:45:44,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-09 06:45:44,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-09 06:45:44,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887309485] [2025-03-09 06:45:44,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:45:44,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-09 06:45:44,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:44,748 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-09 06:45:44,748 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:45:44,753 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-09 06:45:44,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 35 transitions, 151 flow. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:44,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:44,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-09 06:45:44,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:44,926 INFO L124 PetriNetUnfolderBase]: 686/1318 cut-off events. [2025-03-09 06:45:44,926 INFO L125 PetriNetUnfolderBase]: For 1093/1105 co-relation queries the response was YES. [2025-03-09 06:45:44,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3509 conditions, 1318 events. 686/1318 cut-off events. For 1093/1105 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 6546 event pairs, 222 based on Foata normal form. 41/1312 useless extension candidates. Maximal degree in co-relation 3495. Up to 434 conditions per place. [2025-03-09 06:45:44,932 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 90 selfloop transitions, 5 changer transitions 0/99 dead transitions. [2025-03-09 06:45:44,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 99 transitions, 667 flow [2025-03-09 06:45:44,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-09 06:45:44,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-09 06:45:44,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2025-03-09 06:45:44,934 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5729166666666666 [2025-03-09 06:45:44,934 INFO L175 Difference]: Start difference. First operand has 49 places, 35 transitions, 151 flow. Second operand 6 states and 110 transitions. [2025-03-09 06:45:44,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 99 transitions, 667 flow [2025-03-09 06:45:44,937 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 99 transitions, 665 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:45:44,938 INFO L231 Difference]: Finished difference. Result has 52 places, 34 transitions, 155 flow [2025-03-09 06:45:44,938 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=155, PETRI_PLACES=52, PETRI_TRANSITIONS=34} [2025-03-09 06:45:44,938 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2025-03-09 06:45:44,938 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 34 transitions, 155 flow [2025-03-09 06:45:44,939 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:44,939 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:44,939 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:44,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-09 06:45:45,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:45:45,143 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-09 06:45:45,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:45,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1061891263, now seen corresponding path program 1 times [2025-03-09 06:45:45,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:45,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289525881] [2025-03-09 06:45:45,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:45,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:45,148 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:45:45,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:45:45,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:45,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:45,204 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:45,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:45,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289525881] [2025-03-09 06:45:45,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289525881] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:45:45,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917215383] [2025-03-09 06:45:45,204 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:45,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:45:45,204 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:45:45,206 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:45:45,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-09 06:45:45,239 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:45:45,247 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:45:45,247 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:45,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:45,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-09 06:45:45,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:45:45,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:45,265 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:45:45,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:45,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917215383] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:45:45,293 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:45:45,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-09 06:45:45,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028744639] [2025-03-09 06:45:45,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:45:45,294 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-09 06:45:45,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:45,294 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-09 06:45:45,294 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-09 06:45:45,305 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-09 06:45:45,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 34 transitions, 155 flow. Second operand has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:45,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:45,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-09 06:45:45,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:45,614 INFO L124 PetriNetUnfolderBase]: 1217/2349 cut-off events. [2025-03-09 06:45:45,614 INFO L125 PetriNetUnfolderBase]: For 2670/2694 co-relation queries the response was YES. [2025-03-09 06:45:45,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6554 conditions, 2349 events. 1217/2349 cut-off events. For 2670/2694 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 12722 event pairs, 450 based on Foata normal form. 123/2466 useless extension candidates. Maximal degree in co-relation 6540. Up to 875 conditions per place. [2025-03-09 06:45:45,626 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 159 selfloop transitions, 9 changer transitions 0/172 dead transitions. [2025-03-09 06:45:45,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 172 transitions, 1191 flow [2025-03-09 06:45:45,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:45:45,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:45:45,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 189 transitions. [2025-03-09 06:45:45,628 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.590625 [2025-03-09 06:45:45,628 INFO L175 Difference]: Start difference. First operand has 52 places, 34 transitions, 155 flow. Second operand 10 states and 189 transitions. [2025-03-09 06:45:45,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 172 transitions, 1191 flow [2025-03-09 06:45:45,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 172 transitions, 1176 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-03-09 06:45:45,635 INFO L231 Difference]: Finished difference. Result has 60 places, 40 transitions, 210 flow [2025-03-09 06:45:45,636 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=210, PETRI_PLACES=60, PETRI_TRANSITIONS=40} [2025-03-09 06:45:45,637 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 27 predicate places. [2025-03-09 06:45:45,637 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 40 transitions, 210 flow [2025-03-09 06:45:45,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.666666666666666) internal successors, (128), 12 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:45,638 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:45,638 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:45,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-09 06:45:45,842 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:45:45,842 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-09 06:45:45,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:45,842 INFO L85 PathProgramCache]: Analyzing trace with hash -2104877878, now seen corresponding path program 2 times [2025-03-09 06:45:45,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:45,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395322382] [2025-03-09 06:45:45,843 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:45:45,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:45,847 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-09 06:45:45,849 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 20 statements. [2025-03-09 06:45:45,849 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:45:45,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:45,901 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:45:45,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:45,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395322382] [2025-03-09 06:45:45,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395322382] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:45:45,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021204214] [2025-03-09 06:45:45,902 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:45:45,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:45:45,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:45:45,904 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:45:45,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-09 06:45:45,936 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 20 statements into 2 equivalence classes. [2025-03-09 06:45:45,942 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 8 of 20 statements. [2025-03-09 06:45:45,942 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:45:45,942 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:45,943 INFO L256 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 06:45:45,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:45:45,989 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:45:45,989 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:45:46,045 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:45:46,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2021204214] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:45:46,045 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:45:46,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-09 06:45:46,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771154204] [2025-03-09 06:45:46,045 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:45:46,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-09 06:45:46,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:46,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-09 06:45:46,046 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-09 06:45:46,073 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-03-09 06:45:46,073 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 40 transitions, 210 flow. Second operand has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:46,073 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:46,073 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-03-09 06:45:46,073 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:46,552 INFO L124 PetriNetUnfolderBase]: 2694/5145 cut-off events. [2025-03-09 06:45:46,552 INFO L125 PetriNetUnfolderBase]: For 8684/8719 co-relation queries the response was YES. [2025-03-09 06:45:46,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15558 conditions, 5145 events. 2694/5145 cut-off events. For 8684/8719 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 34182 event pairs, 332 based on Foata normal form. 72/5216 useless extension candidates. Maximal degree in co-relation 15542. Up to 1195 conditions per place. [2025-03-09 06:45:46,576 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 120 selfloop transitions, 30 changer transitions 6/160 dead transitions. [2025-03-09 06:45:46,577 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 160 transitions, 1219 flow [2025-03-09 06:45:46,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:45:46,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:45:46,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 148 transitions. [2025-03-09 06:45:46,578 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4625 [2025-03-09 06:45:46,578 INFO L175 Difference]: Start difference. First operand has 60 places, 40 transitions, 210 flow. Second operand 10 states and 148 transitions. [2025-03-09 06:45:46,578 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 160 transitions, 1219 flow [2025-03-09 06:45:46,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 160 transitions, 1149 flow, removed 21 selfloop flow, removed 2 redundant places. [2025-03-09 06:45:46,604 INFO L231 Difference]: Finished difference. Result has 71 places, 67 transitions, 470 flow [2025-03-09 06:45:46,604 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=470, PETRI_PLACES=71, PETRI_TRANSITIONS=67} [2025-03-09 06:45:46,605 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 38 predicate places. [2025-03-09 06:45:46,605 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 67 transitions, 470 flow [2025-03-09 06:45:46,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 8.615384615384615) internal successors, (112), 13 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:46,605 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:46,605 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:46,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-09 06:45:46,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:45:46,806 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-09 06:45:46,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:46,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1798047857, now seen corresponding path program 2 times [2025-03-09 06:45:46,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:46,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653642663] [2025-03-09 06:45:46,807 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:45:46,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:46,811 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-03-09 06:45:46,813 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 24 statements. [2025-03-09 06:45:46,813 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:45:46,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:46,865 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:45:46,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:46,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653642663] [2025-03-09 06:45:46,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653642663] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:45:46,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735357439] [2025-03-09 06:45:46,865 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:45:46,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:45:46,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:45:46,867 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:45:46,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-09 06:45:46,900 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 24 statements into 2 equivalence classes. [2025-03-09 06:45:46,905 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 12 of 24 statements. [2025-03-09 06:45:46,905 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:45:46,906 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:46,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 06:45:46,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:45:46,987 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:45:46,987 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:45:47,031 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-09 06:45:47,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735357439] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:45:47,032 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:45:47,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2025-03-09 06:45:47,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22294855] [2025-03-09 06:45:47,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:45:47,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 06:45:47,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:47,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 06:45:47,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:45:47,048 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-03-09 06:45:47,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 67 transitions, 470 flow. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:47,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:47,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-03-09 06:45:47,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:47,552 INFO L124 PetriNetUnfolderBase]: 3414/6353 cut-off events. [2025-03-09 06:45:47,552 INFO L125 PetriNetUnfolderBase]: For 14965/14993 co-relation queries the response was YES. [2025-03-09 06:45:47,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21418 conditions, 6353 events. 3414/6353 cut-off events. For 14965/14993 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 42700 event pairs, 392 based on Foata normal form. 98/6449 useless extension candidates. Maximal degree in co-relation 21396. Up to 1641 conditions per place. [2025-03-09 06:45:47,575 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 77 selfloop transitions, 18 changer transitions 98/197 dead transitions. [2025-03-09 06:45:47,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 197 transitions, 1803 flow [2025-03-09 06:45:47,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-09 06:45:47,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-09 06:45:47,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 147 transitions. [2025-03-09 06:45:47,576 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.459375 [2025-03-09 06:45:47,576 INFO L175 Difference]: Start difference. First operand has 71 places, 67 transitions, 470 flow. Second operand 10 states and 147 transitions. [2025-03-09 06:45:47,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 197 transitions, 1803 flow [2025-03-09 06:45:47,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 197 transitions, 1802 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:45:47,639 INFO L231 Difference]: Finished difference. Result has 85 places, 68 transitions, 556 flow [2025-03-09 06:45:47,640 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=556, PETRI_PLACES=85, PETRI_TRANSITIONS=68} [2025-03-09 06:45:47,640 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 52 predicate places. [2025-03-09 06:45:47,640 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 68 transitions, 556 flow [2025-03-09 06:45:47,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:47,640 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:47,640 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:47,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-09 06:45:47,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:45:47,841 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-09 06:45:47,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:47,842 INFO L85 PathProgramCache]: Analyzing trace with hash 403489266, now seen corresponding path program 1 times [2025-03-09 06:45:47,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:47,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396329476] [2025-03-09 06:45:47,842 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:47,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:47,845 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-09 06:45:47,849 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-09 06:45:47,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:47,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:47,950 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:47,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:47,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396329476] [2025-03-09 06:45:47,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396329476] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:45:47,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505390308] [2025-03-09 06:45:47,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:47,951 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:45:47,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:45:47,953 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:45:47,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-09 06:45:47,985 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-09 06:45:47,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-09 06:45:47,995 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:47,995 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:47,996 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 06:45:47,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:45:48,029 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:48,029 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:45:48,144 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:48,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505390308] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:45:48,144 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:45:48,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-03-09 06:45:48,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522920689] [2025-03-09 06:45:48,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:45:48,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-09 06:45:48,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:48,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-09 06:45:48,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-03-09 06:45:48,166 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-09 06:45:48,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 68 transitions, 556 flow. Second operand has 24 states, 24 states have (on average 10.416666666666666) internal successors, (250), 24 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:48,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:48,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-09 06:45:48,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:49,108 INFO L124 PetriNetUnfolderBase]: 2814/5609 cut-off events. [2025-03-09 06:45:49,108 INFO L125 PetriNetUnfolderBase]: For 27085/27405 co-relation queries the response was YES. [2025-03-09 06:45:49,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22821 conditions, 5609 events. 2814/5609 cut-off events. For 27085/27405 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 36301 event pairs, 346 based on Foata normal form. 192/5798 useless extension candidates. Maximal degree in co-relation 22792. Up to 931 conditions per place. [2025-03-09 06:45:49,137 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 546 selfloop transitions, 42 changer transitions 80/672 dead transitions. [2025-03-09 06:45:49,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 672 transitions, 7130 flow [2025-03-09 06:45:49,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-09 06:45:49,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-09 06:45:49,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 444 transitions. [2025-03-09 06:45:49,139 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6306818181818182 [2025-03-09 06:45:49,139 INFO L175 Difference]: Start difference. First operand has 85 places, 68 transitions, 556 flow. Second operand 22 states and 444 transitions. [2025-03-09 06:45:49,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 672 transitions, 7130 flow [2025-03-09 06:45:49,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 672 transitions, 6703 flow, removed 213 selfloop flow, removed 4 redundant places. [2025-03-09 06:45:49,175 INFO L231 Difference]: Finished difference. Result has 104 places, 92 transitions, 885 flow [2025-03-09 06:45:49,175 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=529, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=885, PETRI_PLACES=104, PETRI_TRANSITIONS=92} [2025-03-09 06:45:49,177 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 71 predicate places. [2025-03-09 06:45:49,177 INFO L471 AbstractCegarLoop]: Abstraction has has 104 places, 92 transitions, 885 flow [2025-03-09 06:45:49,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.416666666666666) internal successors, (250), 24 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:49,177 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:49,178 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:49,184 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-09 06:45:49,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:45:49,382 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-09 06:45:49,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:49,382 INFO L85 PathProgramCache]: Analyzing trace with hash -620185186, now seen corresponding path program 1 times [2025-03-09 06:45:49,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:49,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481317874] [2025-03-09 06:45:49,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:49,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:49,387 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-09 06:45:49,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-09 06:45:49,391 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:49,391 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:49,478 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:49,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:49,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481317874] [2025-03-09 06:45:49,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481317874] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:45:49,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637871650] [2025-03-09 06:45:49,479 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:45:49,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:45:49,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:45:49,481 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:45:49,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-09 06:45:49,514 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 26 statements into 1 equivalence classes. [2025-03-09 06:45:49,524 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 26 of 26 statements. [2025-03-09 06:45:49,524 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:45:49,524 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:49,525 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-09 06:45:49,526 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:45:49,553 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:49,554 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:45:49,654 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:45:49,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637871650] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:45:49,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:45:49,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2025-03-09 06:45:49,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803661962] [2025-03-09 06:45:49,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:45:49,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-09 06:45:49,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:49,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-09 06:45:49,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=397, Unknown=0, NotChecked=0, Total=552 [2025-03-09 06:45:49,675 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2025-03-09 06:45:49,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 92 transitions, 885 flow. Second operand has 24 states, 24 states have (on average 10.416666666666666) internal successors, (250), 24 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:49,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:49,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2025-03-09 06:45:49,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:50,838 INFO L124 PetriNetUnfolderBase]: 5549/11071 cut-off events. [2025-03-09 06:45:50,838 INFO L125 PetriNetUnfolderBase]: For 64278/64336 co-relation queries the response was YES. [2025-03-09 06:45:50,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47637 conditions, 11071 events. 5549/11071 cut-off events. For 64278/64336 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 79289 event pairs, 936 based on Foata normal form. 474/11541 useless extension candidates. Maximal degree in co-relation 47605. Up to 1938 conditions per place. [2025-03-09 06:45:50,901 INFO L140 encePairwiseOnDemand]: 28/32 looper letters, 1060 selfloop transitions, 42 changer transitions 20/1126 dead transitions. [2025-03-09 06:45:50,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 1126 transitions, 14509 flow [2025-03-09 06:45:50,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2025-03-09 06:45:50,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2025-03-09 06:45:50,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 394 transitions. [2025-03-09 06:45:50,903 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5596590909090909 [2025-03-09 06:45:50,903 INFO L175 Difference]: Start difference. First operand has 104 places, 92 transitions, 885 flow. Second operand 22 states and 394 transitions. [2025-03-09 06:45:50,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 1126 transitions, 14509 flow [2025-03-09 06:45:51,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 1126 transitions, 12073 flow, removed 840 selfloop flow, removed 9 redundant places. [2025-03-09 06:45:51,009 INFO L231 Difference]: Finished difference. Result has 122 places, 116 transitions, 1137 flow [2025-03-09 06:45:51,009 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=769, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1137, PETRI_PLACES=122, PETRI_TRANSITIONS=116} [2025-03-09 06:45:51,010 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 89 predicate places. [2025-03-09 06:45:51,011 INFO L471 AbstractCegarLoop]: Abstraction has has 122 places, 116 transitions, 1137 flow [2025-03-09 06:45:51,011 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.416666666666666) internal successors, (250), 24 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:51,011 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:51,012 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:51,017 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-09 06:45:51,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-09 06:45:51,212 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-09 06:45:51,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:51,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1145932738, now seen corresponding path program 2 times [2025-03-09 06:45:51,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:51,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880908163] [2025-03-09 06:45:51,213 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:45:51,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:51,218 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-09 06:45:51,220 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 44 statements. [2025-03-09 06:45:51,220 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:45:51,220 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:51,273 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:45:51,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:51,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880908163] [2025-03-09 06:45:51,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880908163] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:45:51,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1975450327] [2025-03-09 06:45:51,274 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:45:51,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:45:51,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:45:51,276 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:45:51,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-09 06:45:51,317 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-09 06:45:51,324 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 44 statements. [2025-03-09 06:45:51,325 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:45:51,325 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:51,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 06:45:51,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:45:51,396 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:45:51,396 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:45:51,457 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:45:51,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1975450327] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:45:51,458 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:45:51,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2025-03-09 06:45:51,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758713798] [2025-03-09 06:45:51,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:45:51,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-09 06:45:51,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:51,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-09 06:45:51,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2025-03-09 06:45:51,473 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-03-09 06:45:51,473 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 116 transitions, 1137 flow. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:51,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:51,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-03-09 06:45:51,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:52,446 INFO L124 PetriNetUnfolderBase]: 5436/11030 cut-off events. [2025-03-09 06:45:52,447 INFO L125 PetriNetUnfolderBase]: For 61141/61144 co-relation queries the response was YES. [2025-03-09 06:45:52,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47739 conditions, 11030 events. 5436/11030 cut-off events. For 61141/61144 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 79245 event pairs, 1701 based on Foata normal form. 70/11098 useless extension candidates. Maximal degree in co-relation 47701. Up to 4612 conditions per place. [2025-03-09 06:45:52,486 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 60 selfloop transitions, 3 changer transitions 130/197 dead transitions. [2025-03-09 06:45:52,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 197 transitions, 2371 flow [2025-03-09 06:45:52,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 06:45:52,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 06:45:52,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 107 transitions. [2025-03-09 06:45:52,487 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41796875 [2025-03-09 06:45:52,487 INFO L175 Difference]: Start difference. First operand has 122 places, 116 transitions, 1137 flow. Second operand 8 states and 107 transitions. [2025-03-09 06:45:52,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 197 transitions, 2371 flow [2025-03-09 06:45:52,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 197 transitions, 2029 flow, removed 83 selfloop flow, removed 20 redundant places. [2025-03-09 06:45:52,653 INFO L231 Difference]: Finished difference. Result has 108 places, 64 transitions, 480 flow [2025-03-09 06:45:52,653 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=931, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=480, PETRI_PLACES=108, PETRI_TRANSITIONS=64} [2025-03-09 06:45:52,653 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 75 predicate places. [2025-03-09 06:45:52,653 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 64 transitions, 480 flow [2025-03-09 06:45:52,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:52,654 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:45:52,654 INFO L206 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:52,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-03-09 06:45:52,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2025-03-09 06:45:52,854 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2025-03-09 06:45:52,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:45:52,855 INFO L85 PathProgramCache]: Analyzing trace with hash -869682146, now seen corresponding path program 2 times [2025-03-09 06:45:52,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:45:52,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22762172] [2025-03-09 06:45:52,855 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:45:52,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:45:52,859 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-09 06:45:52,862 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 44 statements. [2025-03-09 06:45:52,862 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:45:52,862 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:52,912 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:45:52,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:45:52,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22762172] [2025-03-09 06:45:52,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [22762172] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-09 06:45:52,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262386197] [2025-03-09 06:45:52,912 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-09 06:45:52,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-09 06:45:52,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:45:52,914 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-09 06:45:52,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-09 06:45:52,945 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 44 statements into 2 equivalence classes. [2025-03-09 06:45:52,953 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 14 of 44 statements. [2025-03-09 06:45:52,954 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-09 06:45:52,954 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:45:52,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjuncts are in the unsatisfiable core [2025-03-09 06:45:52,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-09 06:45:53,017 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:45:53,018 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-09 06:45:53,099 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-03-09 06:45:53,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262386197] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-09 06:45:53,100 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-09 06:45:53,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-09 06:45:53,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503480426] [2025-03-09 06:45:53,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-09 06:45:53,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-09 06:45:53,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:45:53,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-09 06:45:53,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2025-03-09 06:45:53,124 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2025-03-09 06:45:53,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 64 transitions, 480 flow. Second operand has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:53,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:45:53,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2025-03-09 06:45:53,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:45:53,526 INFO L124 PetriNetUnfolderBase]: 2616/5346 cut-off events. [2025-03-09 06:45:53,526 INFO L125 PetriNetUnfolderBase]: For 18119/18119 co-relation queries the response was YES. [2025-03-09 06:45:53,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19663 conditions, 5346 events. 2616/5346 cut-off events. For 18119/18119 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 33170 event pairs, 2 based on Foata normal form. 79/5424 useless extension candidates. Maximal degree in co-relation 19635. Up to 2191 conditions per place. [2025-03-09 06:45:53,540 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 0 selfloop transitions, 0 changer transitions 122/122 dead transitions. [2025-03-09 06:45:53,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 122 transitions, 1093 flow [2025-03-09 06:45:53,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-09 06:45:53,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-09 06:45:53,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2025-03-09 06:45:53,541 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.375 [2025-03-09 06:45:53,541 INFO L175 Difference]: Start difference. First operand has 108 places, 64 transitions, 480 flow. Second operand 8 states and 96 transitions. [2025-03-09 06:45:53,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 122 transitions, 1093 flow [2025-03-09 06:45:53,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 122 transitions, 835 flow, removed 27 selfloop flow, removed 24 redundant places. [2025-03-09 06:45:53,564 INFO L231 Difference]: Finished difference. Result has 83 places, 0 transitions, 0 flow [2025-03-09 06:45:53,564 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=83, PETRI_TRANSITIONS=0} [2025-03-09 06:45:53,564 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 50 predicate places. [2025-03-09 06:45:53,565 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 0 transitions, 0 flow [2025-03-09 06:45:53,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.461538461538462) internal successors, (123), 13 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:45:53,566 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 14 remaining) [2025-03-09 06:45:53,567 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 14 remaining) [2025-03-09 06:45:53,567 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 14 remaining) [2025-03-09 06:45:53,567 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 14 remaining) [2025-03-09 06:45:53,567 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 14 remaining) [2025-03-09 06:45:53,567 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 14 remaining) [2025-03-09 06:45:53,567 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 14 remaining) [2025-03-09 06:45:53,567 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 14 remaining) [2025-03-09 06:45:53,567 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 14 remaining) [2025-03-09 06:45:53,567 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 14 remaining) [2025-03-09 06:45:53,567 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 14 remaining) [2025-03-09 06:45:53,567 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 14 remaining) [2025-03-09 06:45:53,567 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 14 remaining) [2025-03-09 06:45:53,567 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 14 remaining) [2025-03-09 06:45:53,572 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-09 06:45:53,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2025-03-09 06:45:53,768 INFO L422 BasicCegarLoop]: Path program histogram: [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2025-03-09 06:45:53,771 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-09 06:45:53,771 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-09 06:45:53,774 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.03 06:45:53 BasicIcfg [2025-03-09 06:45:53,774 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-09 06:45:53,774 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-09 06:45:53,774 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-09 06:45:53,774 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-09 06:45:53,775 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:45:42" (3/4) ... [2025-03-09 06:45:53,776 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-09 06:45:53,777 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure f1 [2025-03-09 06:45:53,777 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure f2 [2025-03-09 06:45:53,779 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 31 nodes and edges [2025-03-09 06:45:53,779 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2025-03-09 06:45:53,780 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2025-03-09 06:45:53,780 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-09 06:45:53,824 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-09 06:45:53,824 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-09 06:45:53,824 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-09 06:45:53,825 INFO L158 Benchmark]: Toolchain (without parser) took 12252.46ms. Allocated memory was 167.8MB in the beginning and 713.0MB in the end (delta: 545.3MB). Free memory was 121.3MB in the beginning and 235.3MB in the end (delta: -114.0MB). Peak memory consumption was 431.5MB. Max. memory is 16.1GB. [2025-03-09 06:45:53,825 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 119.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:45:53,825 INFO L158 Benchmark]: CACSL2BoogieTranslator took 349.60ms. Allocated memory is still 167.8MB. Free memory was 120.8MB in the beginning and 101.4MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-09 06:45:53,825 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.43ms. Allocated memory is still 167.8MB. Free memory was 101.4MB in the beginning and 99.7MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 06:45:53,825 INFO L158 Benchmark]: Boogie Preprocessor took 20.91ms. Allocated memory is still 167.8MB. Free memory was 99.7MB in the beginning and 98.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:45:53,826 INFO L158 Benchmark]: IcfgBuilder took 353.23ms. Allocated memory is still 167.8MB. Free memory was 98.0MB in the beginning and 74.5MB in the end (delta: 23.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-09 06:45:53,827 INFO L158 Benchmark]: TraceAbstraction took 11449.88ms. Allocated memory was 167.8MB in the beginning and 713.0MB in the end (delta: 545.3MB). Free memory was 74.1MB in the beginning and 242.7MB in the end (delta: -168.6MB). Peak memory consumption was 548.9MB. Max. memory is 16.1GB. [2025-03-09 06:45:53,828 INFO L158 Benchmark]: Witness Printer took 49.87ms. Allocated memory is still 713.0MB. Free memory was 242.7MB in the beginning and 235.3MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 06:45:53,829 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 201.3MB. Free memory is still 119.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 349.60ms. Allocated memory is still 167.8MB. Free memory was 120.8MB in the beginning and 101.4MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 24.43ms. Allocated memory is still 167.8MB. Free memory was 101.4MB in the beginning and 99.7MB in the end (delta: 1.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.91ms. Allocated memory is still 167.8MB. Free memory was 99.7MB in the beginning and 98.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 353.23ms. Allocated memory is still 167.8MB. Free memory was 98.0MB in the beginning and 74.5MB in the end (delta: 23.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * TraceAbstraction took 11449.88ms. Allocated memory was 167.8MB in the beginning and 713.0MB in the end (delta: 545.3MB). Free memory was 74.1MB in the beginning and 242.7MB in the end (delta: -168.6MB). Peak memory consumption was 548.9MB. Max. memory is 16.1GB. * Witness Printer took 49.87ms. Allocated memory is still 713.0MB. Free memory was 242.7MB in the beginning and 235.3MB in the end (delta: 7.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 761]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 761]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 770]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 770]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 55 locations, 58 edges, 14 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 11.4s, OverallIterations: 14, TraceHistogramMax: 11, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1740 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1692 mSDsluCounter, 365 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 350 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3031 IncrementalHoareTripleChecker+Invalid, 3064 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 15 mSDtfsCounter, 3031 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 574 GetRequests, 392 SyntacticMatches, 8 SemanticMatches, 174 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 622 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1137occurred in iteration=12, InterpolantAutomatonStates: 126, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 499 NumberOfCodeBlocks, 331 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 677 ConstructedInterpolants, 0 QuantifiedInterpolants, 1853 SizeOfPredicates, 42 NumberOfNonLiveVariables, 770 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 32 InterpolantComputations, 6 PerfectInterpolantSequences, 1006/1376 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-09 06:45:53,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE