./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-theta/unwind1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-theta/unwind1-1.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 369675afdce9f24a16d648c2af0379dafe84b15f75fb11d38697f731d0b5b69e --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:31:48,846 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:31:48,897 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:31:48,907 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:31:48,907 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:31:48,927 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:31:48,927 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:31:48,927 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:31:48,928 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:31:48,928 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:31:48,929 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:31:48,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:31:48,929 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:31:48,929 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:31:48,930 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:31:48,930 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:31:48,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:31:48,930 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:31:48,930 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:31:48,930 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:31:48,930 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:31:48,930 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:31:48,931 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:31:48,931 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:31:48,931 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:31:48,931 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:31:48,931 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:31:48,931 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:31:48,931 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:31:48,931 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:31:48,931 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:31:48,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:31:48,932 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:31:48,932 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:31:48,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:31:48,932 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:31:48,932 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:31:48,932 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:31:48,932 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:31:48,932 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:31:48,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:31:48,932 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:31:48,932 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:31:48,932 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:31:48,932 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:31:48,932 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 -> 369675afdce9f24a16d648c2af0379dafe84b15f75fb11d38697f731d0b5b69e [2025-03-04 15:31:49,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:31:49,168 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:31:49,170 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:31:49,171 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:31:49,171 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:31:49,173 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind1-1.i [2025-03-04 15:31:50,344 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e84377635/2c33a649f5b1443ab326f375919b0a17/FLAG8a63cb8ea [2025-03-04 15:31:50,607 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:31:50,608 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind1-1.i [2025-03-04 15:31:50,623 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e84377635/2c33a649f5b1443ab326f375919b0a17/FLAG8a63cb8ea [2025-03-04 15:31:50,638 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e84377635/2c33a649f5b1443ab326f375919b0a17 [2025-03-04 15:31:50,640 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:31:50,641 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:31:50,642 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:31:50,643 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:31:50,646 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:31:50,647 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:31:50" (1/1) ... [2025-03-04 15:31:50,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60df335e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:50, skipping insertion in model container [2025-03-04 15:31:50,648 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:31:50" (1/1) ... [2025-03-04 15:31:50,675 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:31:50,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:31:50,857 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:31:50,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:31:50,926 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:31:50,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:50 WrapperNode [2025-03-04 15:31:50,927 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:31:50,928 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:31:50,928 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:31:50,928 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:31:50,932 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:50" (1/1) ... [2025-03-04 15:31:50,945 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:50" (1/1) ... [2025-03-04 15:31:50,957 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 55 [2025-03-04 15:31:50,957 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:31:50,958 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:31:50,958 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:31:50,958 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:31:50,963 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:50" (1/1) ... [2025-03-04 15:31:50,963 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:50" (1/1) ... [2025-03-04 15:31:50,964 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:50" (1/1) ... [2025-03-04 15:31:50,972 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-04 15:31:50,972 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:50" (1/1) ... [2025-03-04 15:31:50,972 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:50" (1/1) ... [2025-03-04 15:31:50,975 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:50" (1/1) ... [2025-03-04 15:31:50,976 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:50" (1/1) ... [2025-03-04 15:31:50,977 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:50" (1/1) ... [2025-03-04 15:31:50,977 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:50" (1/1) ... [2025-03-04 15:31:50,978 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:31:50,979 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:31:50,979 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:31:50,979 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:31:50,980 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:50" (1/1) ... [2025-03-04 15:31:50,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:31:50,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:31:51,004 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 15:31:51,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 15:31:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:31:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-03-04 15:31:51,021 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-03-04 15:31:51,021 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-03-04 15:31:51,022 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-03-04 15:31:51,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:31:51,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:31:51,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:31:51,022 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:31:51,096 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:31:51,097 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:31:51,202 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:31:51,202 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:31:51,272 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:31:51,272 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:31:51,272 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:31:51 BoogieIcfgContainer [2025-03-04 15:31:51,272 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:31:51,274 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:31:51,274 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:31:51,278 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:31:51,279 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:31:50" (1/3) ... [2025-03-04 15:31:51,280 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e171a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:31:51, skipping insertion in model container [2025-03-04 15:31:51,280 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:50" (2/3) ... [2025-03-04 15:31:51,281 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e171a18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:31:51, skipping insertion in model container [2025-03-04 15:31:51,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:31:51" (3/3) ... [2025-03-04 15:31:51,281 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind1-1.i [2025-03-04 15:31:51,292 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:31:51,293 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind1-1.i that has 3 procedures, 26 locations, 1 initial locations, 1 loop locations, and 4 error locations. [2025-03-04 15:31:51,294 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:31:51,330 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-04 15:31:51,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 27 transitions, 68 flow [2025-03-04 15:31:51,375 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2025-03-04 15:31:51,376 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 15:31:51,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 25 events. 2/25 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 49 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2025-03-04 15:31:51,379 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 27 transitions, 68 flow [2025-03-04 15:31:51,381 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 23 transitions, 55 flow [2025-03-04 15:31:51,389 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:31:51,399 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;@45542dd1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:31:51,400 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2025-03-04 15:31:51,405 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:31:51,410 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2025-03-04 15:31:51,410 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:31:51,410 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:31:51,410 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-04 15:31:51,411 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-03-04 15:31:51,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:31:51,417 INFO L85 PathProgramCache]: Analyzing trace with hash 184130288, now seen corresponding path program 1 times [2025-03-04 15:31:51,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:31:51,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715635484] [2025-03-04 15:31:51,424 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:31:51,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:31:51,487 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-04 15:31:51,500 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-04 15:31:51,501 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:31:51,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:31:51,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:31:51,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:31:51,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715635484] [2025-03-04 15:31:51,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715635484] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:31:51,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:31:51,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 15:31:51,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909356502] [2025-03-04 15:31:51,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:31:51,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:31:51,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:31:51,605 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:31:51,605 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:31:51,612 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-03-04 15:31:51,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:31:51,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:31:51,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-03-04 15:31:51,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:31:51,684 INFO L124 PetriNetUnfolderBase]: 89/194 cut-off events. [2025-03-04 15:31:51,684 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2025-03-04 15:31:51,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 194 events. 89/194 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 746 event pairs, 66 based on Foata normal form. 19/175 useless extension candidates. Maximal degree in co-relation 340. Up to 154 conditions per place. [2025-03-04 15:31:51,688 INFO L140 encePairwiseOnDemand]: 24/27 looper letters, 14 selfloop transitions, 1 changer transitions 1/21 dead transitions. [2025-03-04 15:31:51,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 21 transitions, 83 flow [2025-03-04 15:31:51,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:31:51,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:31:51,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2025-03-04 15:31:51,697 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2025-03-04 15:31:51,698 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 55 flow. Second operand 3 states and 39 transitions. [2025-03-04 15:31:51,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 21 transitions, 83 flow [2025-03-04 15:31:51,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 21 transitions, 78 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:31:51,703 INFO L231 Difference]: Finished difference. Result has 25 places, 20 transitions, 46 flow [2025-03-04 15:31:51,705 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=25, PETRI_TRANSITIONS=20} [2025-03-04 15:31:51,707 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, -3 predicate places. [2025-03-04 15:31:51,707 INFO L471 AbstractCegarLoop]: Abstraction has has 25 places, 20 transitions, 46 flow [2025-03-04 15:31:51,707 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:31:51,707 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:31:51,707 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:31:51,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:31:51,708 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-03-04 15:31:51,708 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:31:51,708 INFO L85 PathProgramCache]: Analyzing trace with hash 842182137, now seen corresponding path program 1 times [2025-03-04 15:31:51,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:31:51,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713084487] [2025-03-04 15:31:51,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:31:51,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:31:51,722 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:31:51,731 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:31:51,735 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:31:51,735 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:31:51,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:31:51,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:31:51,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713084487] [2025-03-04 15:31:51,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713084487] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:31:51,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:31:51,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:31:51,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327125396] [2025-03-04 15:31:51,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:31:51,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:31:51,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:31:51,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:31:51,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:31:51,856 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2025-03-04 15:31:51,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:31:51,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:31:51,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2025-03-04 15:31:51,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:31:51,946 INFO L124 PetriNetUnfolderBase]: 48/113 cut-off events. [2025-03-04 15:31:51,946 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 15:31:51,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 113 events. 48/113 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 347 event pairs, 15 based on Foata normal form. 13/113 useless extension candidates. Maximal degree in co-relation 221. Up to 45 conditions per place. [2025-03-04 15:31:51,947 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 15 selfloop transitions, 3 changer transitions 10/33 dead transitions. [2025-03-04 15:31:51,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 33 transitions, 131 flow [2025-03-04 15:31:51,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:31:51,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:31:51,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2025-03-04 15:31:51,948 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-03-04 15:31:51,948 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 46 flow. Second operand 5 states and 75 transitions. [2025-03-04 15:31:51,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 33 transitions, 131 flow [2025-03-04 15:31:51,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 33 transitions, 130 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:31:51,950 INFO L231 Difference]: Finished difference. Result has 30 places, 20 transitions, 60 flow [2025-03-04 15:31:51,950 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=60, PETRI_PLACES=30, PETRI_TRANSITIONS=20} [2025-03-04 15:31:51,950 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 2 predicate places. [2025-03-04 15:31:51,950 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 20 transitions, 60 flow [2025-03-04 15:31:51,950 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 4 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:31:51,950 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:31:51,951 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:31:51,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 15:31:51,951 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-03-04 15:31:51,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:31:51,951 INFO L85 PathProgramCache]: Analyzing trace with hash -852743669, now seen corresponding path program 1 times [2025-03-04 15:31:51,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:31:51,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133442121] [2025-03-04 15:31:51,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:31:51,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:31:51,957 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-04 15:31:51,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-04 15:31:51,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:31:51,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:31:51,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:31:51,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:31:51,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133442121] [2025-03-04 15:31:51,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133442121] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:31:51,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:31:51,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:31:51,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293461995] [2025-03-04 15:31:51,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:31:51,998 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:31:51,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:31:51,998 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:31:51,998 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:31:52,002 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-03-04 15:31:52,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 20 transitions, 60 flow. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:31:52,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:31:52,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-03-04 15:31:52,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:31:52,051 INFO L124 PetriNetUnfolderBase]: 54/124 cut-off events. [2025-03-04 15:31:52,052 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2025-03-04 15:31:52,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 296 conditions, 124 events. 54/124 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 322 event pairs, 35 based on Foata normal form. 5/118 useless extension candidates. Maximal degree in co-relation 286. Up to 91 conditions per place. [2025-03-04 15:31:52,053 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 22 selfloop transitions, 3 changer transitions 0/28 dead transitions. [2025-03-04 15:31:52,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 28 transitions, 132 flow [2025-03-04 15:31:52,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:31:52,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:31:52,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 55 transitions. [2025-03-04 15:31:52,054 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2025-03-04 15:31:52,054 INFO L175 Difference]: Start difference. First operand has 30 places, 20 transitions, 60 flow. Second operand 4 states and 55 transitions. [2025-03-04 15:31:52,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 28 transitions, 132 flow [2025-03-04 15:31:52,055 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 28 transitions, 118 flow, removed 4 selfloop flow, removed 4 redundant places. [2025-03-04 15:31:52,055 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 72 flow [2025-03-04 15:31:52,055 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=72, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2025-03-04 15:31:52,056 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2025-03-04 15:31:52,056 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 72 flow [2025-03-04 15:31:52,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:31:52,056 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:31:52,056 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:31:52,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 15:31:52,056 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-03-04 15:31:52,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:31:52,057 INFO L85 PathProgramCache]: Analyzing trace with hash 645069397, now seen corresponding path program 1 times [2025-03-04 15:31:52,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:31:52,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087282491] [2025-03-04 15:31:52,057 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:31:52,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:31:52,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 15:31:52,065 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 15:31:52,066 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:31:52,066 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:31:52,110 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:31:52,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:31:52,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087282491] [2025-03-04 15:31:52,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087282491] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:31:52,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1743046285] [2025-03-04 15:31:52,111 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:31:52,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:31:52,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:31:52,113 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:31:52,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 15:31:52,151 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 15:31:52,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 15:31:52,164 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:31:52,164 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:31:52,166 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:31:52,168 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:31:52,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:31:52,209 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:31:52,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1743046285] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:31:52,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:31:52,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-04 15:31:52,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048272512] [2025-03-04 15:31:52,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:31:52,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-04 15:31:52,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:31:52,210 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-04 15:31:52,210 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-04 15:31:52,215 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-03-04 15:31:52,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 72 flow. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:31:52,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:31:52,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-03-04 15:31:52,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:31:52,315 INFO L124 PetriNetUnfolderBase]: 49/114 cut-off events. [2025-03-04 15:31:52,315 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2025-03-04 15:31:52,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 114 events. 49/114 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 280 event pairs, 15 based on Foata normal form. 5/108 useless extension candidates. Maximal degree in co-relation 278. Up to 46 conditions per place. [2025-03-04 15:31:52,318 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 25 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2025-03-04 15:31:52,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 33 transitions, 156 flow [2025-03-04 15:31:52,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:31:52,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:31:52,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2025-03-04 15:31:52,319 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4506172839506173 [2025-03-04 15:31:52,319 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 72 flow. Second operand 6 states and 73 transitions. [2025-03-04 15:31:52,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 33 transitions, 156 flow [2025-03-04 15:31:52,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 33 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:31:52,320 INFO L231 Difference]: Finished difference. Result has 32 places, 21 transitions, 76 flow [2025-03-04 15:31:52,322 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=76, PETRI_PLACES=32, PETRI_TRANSITIONS=21} [2025-03-04 15:31:52,323 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2025-03-04 15:31:52,323 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 21 transitions, 76 flow [2025-03-04 15:31:52,323 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:31:52,323 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:31:52,323 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:31:52,329 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 15:31:52,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:31:52,527 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-03-04 15:31:52,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:31:52,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1477685017, now seen corresponding path program 1 times [2025-03-04 15:31:52,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:31:52,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893266748] [2025-03-04 15:31:52,528 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:31:52,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:31:52,533 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 15:31:52,536 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 15:31:52,536 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:31:52,536 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:31:52,656 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:31:52,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:31:52,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893266748] [2025-03-04 15:31:52,656 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893266748] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:31:52,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980102087] [2025-03-04 15:31:52,656 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:31:52,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:31:52,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:31:52,658 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:31:52,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 15:31:52,692 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-04 15:31:52,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-04 15:31:52,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:31:52,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:31:52,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-04 15:31:52,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:31:52,751 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:31:52,752 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 15:31:52,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:31:52,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980102087] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 15:31:52,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 15:31:52,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 15 [2025-03-04 15:31:52,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997346517] [2025-03-04 15:31:52,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 15:31:52,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-03-04 15:31:52,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:31:52,804 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-03-04 15:31:52,804 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2025-03-04 15:31:52,855 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-04 15:31:52,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 21 transitions, 76 flow. Second operand has 15 states, 15 states have (on average 6.933333333333334) internal successors, (104), 15 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:31:52,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:31:52,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-04 15:31:52,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:31:53,146 INFO L124 PetriNetUnfolderBase]: 96/235 cut-off events. [2025-03-04 15:31:53,146 INFO L125 PetriNetUnfolderBase]: For 178/178 co-relation queries the response was YES. [2025-03-04 15:31:53,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 235 events. 96/235 cut-off events. For 178/178 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 673 event pairs, 30 based on Foata normal form. 20/249 useless extension candidates. Maximal degree in co-relation 624. Up to 76 conditions per place. [2025-03-04 15:31:53,149 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 36 selfloop transitions, 10 changer transitions 19/68 dead transitions. [2025-03-04 15:31:53,150 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 68 transitions, 354 flow [2025-03-04 15:31:53,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-04 15:31:53,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2025-03-04 15:31:53,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 144 transitions. [2025-03-04 15:31:53,151 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.35555555555555557 [2025-03-04 15:31:53,151 INFO L175 Difference]: Start difference. First operand has 32 places, 21 transitions, 76 flow. Second operand 15 states and 144 transitions. [2025-03-04 15:31:53,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 68 transitions, 354 flow [2025-03-04 15:31:53,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 68 transitions, 318 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-03-04 15:31:53,154 INFO L231 Difference]: Finished difference. Result has 44 places, 25 transitions, 117 flow [2025-03-04 15:31:53,155 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=117, PETRI_PLACES=44, PETRI_TRANSITIONS=25} [2025-03-04 15:31:53,156 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 16 predicate places. [2025-03-04 15:31:53,156 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 25 transitions, 117 flow [2025-03-04 15:31:53,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.933333333333334) internal successors, (104), 15 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:31:53,156 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:31:53,157 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:31:53,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-04 15:31:53,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:31:53,361 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-03-04 15:31:53,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:31:53,361 INFO L85 PathProgramCache]: Analyzing trace with hash 507763949, now seen corresponding path program 1 times [2025-03-04 15:31:53,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:31:53,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498423622] [2025-03-04 15:31:53,362 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:31:53,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:31:53,367 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-04 15:31:53,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-04 15:31:53,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:31:53,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:31:53,444 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-04 15:31:53,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:31:53,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498423622] [2025-03-04 15:31:53,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498423622] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 15:31:53,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664376791] [2025-03-04 15:31:53,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:31:53,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:31:53,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:31:53,447 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 15:31:53,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 15:31:53,483 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-04 15:31:53,501 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-04 15:31:53,501 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:31:53,501 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:31:53,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 15:31:53,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 15:31:53,593 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-03-04 15:31:53,593 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 15:31:53,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664376791] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:31:53,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 15:31:53,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [4] total 11 [2025-03-04 15:31:53,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910976828] [2025-03-04 15:31:53,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:31:53,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-04 15:31:53,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:31:53,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-04 15:31:53,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2025-03-04 15:31:53,616 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2025-03-04 15:31:53,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 25 transitions, 117 flow. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:31:53,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:31:53,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2025-03-04 15:31:53,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:31:53,729 INFO L124 PetriNetUnfolderBase]: 37/98 cut-off events. [2025-03-04 15:31:53,729 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2025-03-04 15:31:53,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 98 events. 37/98 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 229 event pairs, 12 based on Foata normal form. 5/101 useless extension candidates. Maximal degree in co-relation 254. Up to 34 conditions per place. [2025-03-04 15:31:53,730 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2025-03-04 15:31:53,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 33 transitions, 162 flow [2025-03-04 15:31:53,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 15:31:53,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-04 15:31:53,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 71 transitions. [2025-03-04 15:31:53,731 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3287037037037037 [2025-03-04 15:31:53,731 INFO L175 Difference]: Start difference. First operand has 44 places, 25 transitions, 117 flow. Second operand 8 states and 71 transitions. [2025-03-04 15:31:53,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 33 transitions, 162 flow [2025-03-04 15:31:53,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 33 transitions, 144 flow, removed 1 selfloop flow, removed 8 redundant places. [2025-03-04 15:31:53,732 INFO L231 Difference]: Finished difference. Result has 34 places, 0 transitions, 0 flow [2025-03-04 15:31:53,732 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=34, PETRI_TRANSITIONS=0} [2025-03-04 15:31:53,733 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 6 predicate places. [2025-03-04 15:31:53,733 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 0 transitions, 0 flow [2025-03-04 15:31:53,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 9 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:31:53,736 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2025-03-04 15:31:53,737 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 10 remaining) [2025-03-04 15:31:53,737 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2025-03-04 15:31:53,737 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2025-03-04 15:31:53,738 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2025-03-04 15:31:53,738 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2025-03-04 15:31:53,738 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2025-03-04 15:31:53,738 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2025-03-04 15:31:53,738 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2025-03-04 15:31:53,738 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2025-03-04 15:31:53,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 15:31:53,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 15:31:53,939 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2025-03-04 15:31:53,943 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 15:31:53,943 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 15:31:53,946 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 03:31:53 BasicIcfg [2025-03-04 15:31:53,946 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 15:31:53,946 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 15:31:53,946 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 15:31:53,947 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 15:31:53,947 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:31:51" (3/4) ... [2025-03-04 15:31:53,948 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 15:31:53,950 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure f1 [2025-03-04 15:31:53,950 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure f2 [2025-03-04 15:31:53,952 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 29 nodes and edges [2025-03-04 15:31:53,952 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2025-03-04 15:31:53,952 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-03-04 15:31:53,952 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-04 15:31:53,996 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 15:31:53,997 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 15:31:53,997 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 15:31:53,997 INFO L158 Benchmark]: Toolchain (without parser) took 3356.01ms. Allocated memory is still 142.6MB. Free memory was 110.2MB in the beginning and 81.4MB in the end (delta: 28.8MB). Peak memory consumption was 29.9MB. Max. memory is 16.1GB. [2025-03-04 15:31:53,997 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 128.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:31:53,998 INFO L158 Benchmark]: CACSL2BoogieTranslator took 284.43ms. Allocated memory is still 142.6MB. Free memory was 110.2MB in the beginning and 90.3MB in the end (delta: 20.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 15:31:53,998 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.57ms. Allocated memory is still 142.6MB. Free memory was 90.3MB in the beginning and 89.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:31:53,998 INFO L158 Benchmark]: Boogie Preprocessor took 20.35ms. Allocated memory is still 142.6MB. Free memory was 89.2MB in the beginning and 88.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:31:53,998 INFO L158 Benchmark]: IcfgBuilder took 293.11ms. Allocated memory is still 142.6MB. Free memory was 88.1MB in the beginning and 67.1MB in the end (delta: 21.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 15:31:53,998 INFO L158 Benchmark]: TraceAbstraction took 2671.94ms. Allocated memory is still 142.6MB. Free memory was 67.1MB in the beginning and 86.5MB in the end (delta: -19.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:31:53,998 INFO L158 Benchmark]: Witness Printer took 50.26ms. Allocated memory is still 142.6MB. Free memory was 86.5MB in the beginning and 81.4MB in the end (delta: 5.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:31:53,999 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 201.3MB. Free memory is still 128.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 284.43ms. Allocated memory is still 142.6MB. Free memory was 110.2MB in the beginning and 90.3MB in the end (delta: 20.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 29.57ms. Allocated memory is still 142.6MB. Free memory was 90.3MB in the beginning and 89.2MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 20.35ms. Allocated memory is still 142.6MB. Free memory was 89.2MB in the beginning and 88.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 293.11ms. Allocated memory is still 142.6MB. Free memory was 88.1MB in the beginning and 67.1MB in the end (delta: 21.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2671.94ms. Allocated memory is still 142.6MB. Free memory was 67.1MB in the beginning and 86.5MB in the end (delta: -19.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 50.26ms. Allocated memory is still 142.6MB. Free memory was 86.5MB in the beginning and 81.4MB in the end (delta: 5.1MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 760]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 760]: 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 45 locations, 10 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: 2.6s, OverallIterations: 6, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 278 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 253 mSDsluCounter, 282 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 249 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 741 IncrementalHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 33 mSDtfsCounter, 741 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 107 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=5, InterpolantAutomatonStates: 41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 346 SizeOfPredicates, 10 NumberOfNonLiveVariables, 266 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 56/73 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-04 15:31:54,009 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