./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/test-easy1.wvr.c --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/weaver/test-easy1.wvr.c -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 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:31:07,736 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:31:07,784 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:31:07,788 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:31:07,788 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:31:07,810 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:31:07,811 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:31:07,811 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:31:07,811 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:31:07,811 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:31:07,811 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:31:07,811 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:31:07,811 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:31:07,811 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:31:07,811 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:31:07,811 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:31:07,811 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:31:07,812 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:31:07,812 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:31:07,812 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:31:07,812 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:31:07,812 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:31:07,812 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:31:07,812 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:31:07,812 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:31:07,812 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:31:07,812 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:31:07,812 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:31:07,812 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:31:07,812 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:31:07,812 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:31:07,812 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:31:07,812 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:31:07,814 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:31:07,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:31:07,814 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:31:07,814 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:31:07,814 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:31:07,814 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:31:07,814 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:31:07,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:31:07,814 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:31:07,814 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:31:07,814 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:31:07,815 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:31:07,815 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 -> 935a7b7fee114f90b65d69dd73b2635844dd9aedca06c4cbc37a4ce046611c9d [2025-03-04 15:31:08,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:31:08,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:31:08,052 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:31:08,053 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:31:08,053 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:31:08,055 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/test-easy1.wvr.c [2025-03-04 15:31:09,176 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/168c8456b/ca40ea139bf140ef93f6c45b3b51bc5b/FLAGf91e8822e [2025-03-04 15:31:09,374 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:31:09,374 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/test-easy1.wvr.c [2025-03-04 15:31:09,397 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/168c8456b/ca40ea139bf140ef93f6c45b3b51bc5b/FLAGf91e8822e [2025-03-04 15:31:09,743 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/168c8456b/ca40ea139bf140ef93f6c45b3b51bc5b [2025-03-04 15:31:09,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:31:09,745 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:31:09,746 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:31:09,747 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:31:09,749 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:31:09,750 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:31:09" (1/1) ... [2025-03-04 15:31:09,751 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cc16fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:09, skipping insertion in model container [2025-03-04 15:31:09,751 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:31:09" (1/1) ... [2025-03-04 15:31:09,760 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:31:09,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:31:09,871 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:31:09,880 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:31:09,889 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:31:09,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:09 WrapperNode [2025-03-04 15:31:09,889 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:31:09,890 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:31:09,890 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:31:09,890 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:31:09,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:09" (1/1) ... [2025-03-04 15:31:09,898 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:09" (1/1) ... [2025-03-04 15:31:09,908 INFO L138 Inliner]: procedures = 20, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 47 [2025-03-04 15:31:09,909 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:31:09,909 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:31:09,909 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:31:09,909 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:31:09,913 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:09" (1/1) ... [2025-03-04 15:31:09,914 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:09" (1/1) ... [2025-03-04 15:31:09,914 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:09" (1/1) ... [2025-03-04 15:31:09,921 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 15:31:09,921 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:09" (1/1) ... [2025-03-04 15:31:09,921 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:09" (1/1) ... [2025-03-04 15:31:09,923 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:09" (1/1) ... [2025-03-04 15:31:09,924 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:09" (1/1) ... [2025-03-04 15:31:09,924 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:09" (1/1) ... [2025-03-04 15:31:09,925 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:09" (1/1) ... [2025-03-04 15:31:09,926 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:31:09,926 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:31:09,926 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:31:09,926 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:31:09,927 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:09" (1/1) ... [2025-03-04 15:31:09,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:31:09,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:31:09,950 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 15:31:09,951 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 15:31:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:31:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-04 15:31:09,966 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-04 15:31:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-04 15:31:09,966 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-04 15:31:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:31:09,966 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:31:09,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:31:09,967 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 15:31:10,018 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:31:10,020 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:31:10,132 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:31:10,132 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:31:10,207 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:31:10,208 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:31:10,208 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:31:10 BoogieIcfgContainer [2025-03-04 15:31:10,208 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:31:10,210 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:31:10,210 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:31:10,213 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:31:10,214 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:31:09" (1/3) ... [2025-03-04 15:31:10,215 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1688c194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:31:10, skipping insertion in model container [2025-03-04 15:31:10,215 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:31:09" (2/3) ... [2025-03-04 15:31:10,216 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1688c194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:31:10, skipping insertion in model container [2025-03-04 15:31:10,216 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:31:10" (3/3) ... [2025-03-04 15:31:10,217 INFO L128 eAbstractionObserver]: Analyzing ICFG test-easy1.wvr.c [2025-03-04 15:31:10,228 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:31:10,229 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG test-easy1.wvr.c that has 3 procedures, 23 locations, 1 initial locations, 2 loop locations, and 4 error locations. [2025-03-04 15:31:10,229 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:31:10,263 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-04 15:31:10,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 29 places, 24 transitions, 62 flow [2025-03-04 15:31:10,312 INFO L124 PetriNetUnfolderBase]: 2/22 cut-off events. [2025-03-04 15:31:10,314 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-04 15:31:10,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31 conditions, 22 events. 2/22 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 41 event pairs, 0 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 19. Up to 2 conditions per place. [2025-03-04 15:31:10,316 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 24 transitions, 62 flow [2025-03-04 15:31:10,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 25 places, 20 transitions, 49 flow [2025-03-04 15:31:10,323 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:31:10,330 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;@5fce3345, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:31:10,331 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2025-03-04 15:31:10,337 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:31:10,337 INFO L124 PetriNetUnfolderBase]: 1/9 cut-off events. [2025-03-04 15:31:10,337 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:31:10,337 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:31:10,338 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-04 15:31:10,338 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-03-04 15:31:10,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:31:10,342 INFO L85 PathProgramCache]: Analyzing trace with hash 169913029, now seen corresponding path program 1 times [2025-03-04 15:31:10,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:31:10,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88515597] [2025-03-04 15:31:10,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:31:10,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:31:10,403 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-04 15:31:10,413 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-04 15:31:10,413 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:31:10,414 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:31:10,531 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 15:31:10,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:31:10,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88515597] [2025-03-04 15:31:10,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88515597] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:31:10,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:31:10,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:31:10,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954414476] [2025-03-04 15:31:10,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:31:10,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:31:10,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:31:10,559 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:31:10,559 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:31:10,571 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 24 [2025-03-04 15:31:10,573 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 20 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 15:31:10,573 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:31:10,574 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 24 [2025-03-04 15:31:10,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:31:10,649 INFO L124 PetriNetUnfolderBase]: 88/158 cut-off events. [2025-03-04 15:31:10,649 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2025-03-04 15:31:10,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318 conditions, 158 events. 88/158 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 551 event pairs, 26 based on Foata normal form. 10/115 useless extension candidates. Maximal degree in co-relation 286. Up to 80 conditions per place. [2025-03-04 15:31:10,651 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 16 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2025-03-04 15:31:10,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 25 transitions, 100 flow [2025-03-04 15:31:10,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:31:10,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:31:10,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2025-03-04 15:31:10,659 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2025-03-04 15:31:10,660 INFO L175 Difference]: Start difference. First operand has 25 places, 20 transitions, 49 flow. Second operand 4 states and 52 transitions. [2025-03-04 15:31:10,661 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 25 transitions, 100 flow [2025-03-04 15:31:10,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 25 transitions, 94 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:31:10,665 INFO L231 Difference]: Finished difference. Result has 24 places, 19 transitions, 48 flow [2025-03-04 15:31:10,666 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=21, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=48, PETRI_PLACES=24, PETRI_TRANSITIONS=19} [2025-03-04 15:31:10,668 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, -1 predicate places. [2025-03-04 15:31:10,669 INFO L471 AbstractCegarLoop]: Abstraction has has 24 places, 19 transitions, 48 flow [2025-03-04 15:31:10,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 15:31:10,669 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:31:10,669 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-04 15:31:10,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:31:10,669 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-03-04 15:31:10,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:31:10,670 INFO L85 PathProgramCache]: Analyzing trace with hash 972336742, now seen corresponding path program 1 times [2025-03-04 15:31:10,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:31:10,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028259387] [2025-03-04 15:31:10,670 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:31:10,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:31:10,674 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:31:10,681 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:31:10,681 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:31:10,682 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:31:10,719 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 15:31:10,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:31:10,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028259387] [2025-03-04 15:31:10,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028259387] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:31:10,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:31:10,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:31:10,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227518630] [2025-03-04 15:31:10,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:31:10,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:31:10,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:31:10,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:31:10,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:31:10,725 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 24 [2025-03-04 15:31:10,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 15:31:10,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:31:10,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 24 [2025-03-04 15:31:10,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:31:10,781 INFO L124 PetriNetUnfolderBase]: 72/132 cut-off events. [2025-03-04 15:31:10,783 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2025-03-04 15:31:10,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287 conditions, 132 events. 72/132 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 440 event pairs, 25 based on Foata normal form. 10/120 useless extension candidates. Maximal degree in co-relation 189. Up to 81 conditions per place. [2025-03-04 15:31:10,785 INFO L140 encePairwiseOnDemand]: 21/24 looper letters, 14 selfloop transitions, 2 changer transitions 2/24 dead transitions. [2025-03-04 15:31:10,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 24 transitions, 96 flow [2025-03-04 15:31:10,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:31:10,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:31:10,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2025-03-04 15:31:10,799 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5972222222222222 [2025-03-04 15:31:10,799 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 48 flow. Second operand 3 states and 43 transitions. [2025-03-04 15:31:10,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 24 transitions, 96 flow [2025-03-04 15:31:10,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 24 transitions, 90 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:31:10,800 INFO L231 Difference]: Finished difference. Result has 22 places, 17 transitions, 42 flow [2025-03-04 15:31:10,800 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=22, PETRI_TRANSITIONS=17} [2025-03-04 15:31:10,801 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, -3 predicate places. [2025-03-04 15:31:10,801 INFO L471 AbstractCegarLoop]: Abstraction has has 22 places, 17 transitions, 42 flow [2025-03-04 15:31:10,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 15:31:10,801 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:31:10,801 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:31:10,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 15:31:10,801 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-03-04 15:31:10,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:31:10,802 INFO L85 PathProgramCache]: Analyzing trace with hash 67960177, now seen corresponding path program 1 times [2025-03-04 15:31:10,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:31:10,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819747824] [2025-03-04 15:31:10,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:31:10,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:31:10,805 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:31:10,810 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:31:10,810 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:31:10,810 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:31:10,853 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 15:31:10,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:31:10,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819747824] [2025-03-04 15:31:10,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819747824] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:31:10,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:31:10,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:31:10,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077131567] [2025-03-04 15:31:10,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:31:10,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:31:10,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:31:10,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:31:10,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:31:10,861 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 24 [2025-03-04 15:31:10,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 17 transitions, 42 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 15:31:10,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:31:10,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 24 [2025-03-04 15:31:10,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:31:10,914 INFO L124 PetriNetUnfolderBase]: 63/118 cut-off events. [2025-03-04 15:31:10,915 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2025-03-04 15:31:10,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 118 events. 63/118 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 352 event pairs, 13 based on Foata normal form. 9/115 useless extension candidates. Maximal degree in co-relation 111. Up to 54 conditions per place. [2025-03-04 15:31:10,917 INFO L140 encePairwiseOnDemand]: 20/24 looper letters, 14 selfloop transitions, 3 changer transitions 0/21 dead transitions. [2025-03-04 15:31:10,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 21 transitions, 89 flow [2025-03-04 15:31:10,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:31:10,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:31:10,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 50 transitions. [2025-03-04 15:31:10,918 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2025-03-04 15:31:10,919 INFO L175 Difference]: Start difference. First operand has 22 places, 17 transitions, 42 flow. Second operand 4 states and 50 transitions. [2025-03-04 15:31:10,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 23 places, 21 transitions, 89 flow [2025-03-04 15:31:10,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 21 transitions, 81 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:31:10,920 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 42 flow [2025-03-04 15:31:10,920 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=42, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2025-03-04 15:31:10,921 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, -4 predicate places. [2025-03-04 15:31:10,922 INFO L471 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 42 flow [2025-03-04 15:31:10,922 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 15:31:10,922 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:31:10,922 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:31:10,922 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 15:31:10,922 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 7 more)] === [2025-03-04 15:31:10,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:31:10,923 INFO L85 PathProgramCache]: Analyzing trace with hash 2106765633, now seen corresponding path program 1 times [2025-03-04 15:31:10,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:31:10,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748326028] [2025-03-04 15:31:10,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:31:10,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:31:10,930 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-04 15:31:10,935 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-04 15:31:10,938 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:31:10,939 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:31:10,978 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 15:31:10,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:31:10,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748326028] [2025-03-04 15:31:10,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748326028] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:31:10,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:31:10,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:31:10,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706785391] [2025-03-04 15:31:10,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:31:10,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:31:10,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:31:10,983 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:31:10,983 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:31:10,986 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 24 [2025-03-04 15:31:10,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 15:31:10,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:31:10,987 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 24 [2025-03-04 15:31:10,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:31:11,016 INFO L124 PetriNetUnfolderBase]: 48/94 cut-off events. [2025-03-04 15:31:11,017 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2025-03-04 15:31:11,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 94 events. 48/94 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 266 event pairs, 13 based on Foata normal form. 9/87 useless extension candidates. Maximal degree in co-relation 83. Up to 51 conditions per place. [2025-03-04 15:31:11,017 INFO L140 encePairwiseOnDemand]: 21/24 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2025-03-04 15:31:11,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 20 transitions, 83 flow [2025-03-04 15:31:11,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:31:11,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:31:11,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2025-03-04 15:31:11,018 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5694444444444444 [2025-03-04 15:31:11,018 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 42 flow. Second operand 3 states and 41 transitions. [2025-03-04 15:31:11,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 20 transitions, 83 flow [2025-03-04 15:31:11,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 20 transitions, 77 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:31:11,019 INFO L231 Difference]: Finished difference. Result has 19 places, 0 transitions, 0 flow [2025-03-04 15:31:11,019 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=24, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=19, PETRI_TRANSITIONS=0} [2025-03-04 15:31:11,020 INFO L279 CegarLoopForPetriNet]: 25 programPoint places, -6 predicate places. [2025-03-04 15:31:11,020 INFO L471 AbstractCegarLoop]: Abstraction has has 19 places, 0 transitions, 0 flow [2025-03-04 15:31:11,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 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 15:31:11,022 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2025-03-04 15:31:11,022 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2025-03-04 15:31:11,023 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2025-03-04 15:31:11,023 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2025-03-04 15:31:11,023 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 10 remaining) [2025-03-04 15:31:11,023 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 10 remaining) [2025-03-04 15:31:11,023 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2025-03-04 15:31:11,023 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2025-03-04 15:31:11,023 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2025-03-04 15:31:11,023 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2025-03-04 15:31:11,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 15:31:11,023 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-04 15:31:11,027 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 15:31:11,027 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 15:31:11,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 03:31:11 BasicIcfg [2025-03-04 15:31:11,031 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 15:31:11,031 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 15:31:11,031 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 15:31:11,031 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 15:31:11,032 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:31:10" (3/4) ... [2025-03-04 15:31:11,033 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 15:31:11,036 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-04 15:31:11,036 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-04 15:31:11,038 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 40 nodes and edges [2025-03-04 15:31:11,038 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2025-03-04 15:31:11,038 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-03-04 15:31:11,038 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-04 15:31:11,091 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 15:31:11,092 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 15:31:11,092 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 15:31:11,093 INFO L158 Benchmark]: Toolchain (without parser) took 1346.95ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 79.3MB in the end (delta: 26.4MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2025-03-04 15:31:11,093 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 127.7MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:31:11,094 INFO L158 Benchmark]: CACSL2BoogieTranslator took 143.28ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 94.8MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 15:31:11,094 INFO L158 Benchmark]: Boogie Procedure Inliner took 18.77ms. Allocated memory is still 142.6MB. Free memory was 94.8MB in the beginning and 92.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:31:11,095 INFO L158 Benchmark]: Boogie Preprocessor took 16.61ms. Allocated memory is still 142.6MB. Free memory was 92.9MB in the beginning and 91.9MB in the end (delta: 1.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 15:31:11,095 INFO L158 Benchmark]: IcfgBuilder took 282.16ms. Allocated memory is still 142.6MB. Free memory was 91.9MB in the beginning and 72.4MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 15:31:11,095 INFO L158 Benchmark]: TraceAbstraction took 820.84ms. Allocated memory is still 142.6MB. Free memory was 71.5MB in the beginning and 84.6MB in the end (delta: -13.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:31:11,095 INFO L158 Benchmark]: Witness Printer took 60.58ms. Allocated memory is still 142.6MB. Free memory was 84.6MB in the beginning and 79.3MB in the end (delta: 5.3MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:31:11,096 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 127.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 143.28ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 94.8MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 18.77ms. Allocated memory is still 142.6MB. Free memory was 94.8MB in the beginning and 92.9MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 16.61ms. Allocated memory is still 142.6MB. Free memory was 92.9MB in the beginning and 91.9MB in the end (delta: 1.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 282.16ms. Allocated memory is still 142.6MB. Free memory was 91.9MB in the beginning and 72.4MB in the end (delta: 19.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 820.84ms. Allocated memory is still 142.6MB. Free memory was 71.5MB in the beginning and 84.6MB in the end (delta: -13.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 60.58ms. Allocated memory is still 142.6MB. Free memory was 84.6MB in the beginning and 79.3MB in the end (delta: 5.3MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 42]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 42]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 50]: 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, 39 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: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 60 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 46 mSDsluCounter, 6 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 127 IncrementalHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 4 mSDtfsCounter, 127 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, InterpolantAutomatonStates: 14, 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, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 62 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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 15:31:11,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE