./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-wmm/mix010.opt.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-wmm/mix010.opt.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 371e0ad4620d67bc913500e97f289ec14c56f7c02bd7df3fa28779e14d33459a --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:11:21,710 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:11:21,759 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:11:21,766 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:11:21,766 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:11:21,792 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:11:21,793 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:11:21,794 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:11:21,794 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:11:21,794 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:11:21,794 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:11:21,794 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:11:21,794 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:11:21,794 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:11:21,794 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:11:21,794 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:11:21,794 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:11:21,795 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:11:21,795 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:11:21,795 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:11:21,795 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:11:21,795 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:11:21,795 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:11:21,795 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:11:21,795 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:11:21,795 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:11:21,795 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:11:21,795 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:11:21,796 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:11:21,796 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:11:21,796 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:11:21,796 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:11:21,796 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:11:21,796 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:11:21,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:11:21,796 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:11:21,796 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:11:21,796 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:11:21,796 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:11:21,796 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:11:21,796 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:11:21,796 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:11:21,797 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:11:21,797 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:11:21,797 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:11:21,797 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 -> 371e0ad4620d67bc913500e97f289ec14c56f7c02bd7df3fa28779e14d33459a [2025-03-04 15:11:22,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:11:22,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:11:22,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:11:22,071 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:11:22,071 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:11:22,073 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix010.opt.i [2025-03-04 15:11:23,329 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/822f22569/5d09ccc0f3fc40b9bb1b85345f3b6b0f/FLAG659987375 [2025-03-04 15:11:23,620 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:11:23,625 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix010.opt.i [2025-03-04 15:11:23,645 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/822f22569/5d09ccc0f3fc40b9bb1b85345f3b6b0f/FLAG659987375 [2025-03-04 15:11:23,662 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/822f22569/5d09ccc0f3fc40b9bb1b85345f3b6b0f [2025-03-04 15:11:23,664 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:11:23,666 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:11:23,667 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:11:23,668 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:11:23,672 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:11:23,672 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:11:23" (1/1) ... [2025-03-04 15:11:23,673 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@450feb06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:23, skipping insertion in model container [2025-03-04 15:11:23,673 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:11:23" (1/1) ... [2025-03-04 15:11:23,703 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:11:24,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:11:24,026 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:11:24,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:11:24,099 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:11:24,099 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:24 WrapperNode [2025-03-04 15:11:24,099 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:11:24,100 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:11:24,100 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:11:24,101 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:11:24,105 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:24" (1/1) ... [2025-03-04 15:11:24,116 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:24" (1/1) ... [2025-03-04 15:11:24,137 INFO L138 Inliner]: procedures = 175, calls = 49, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 147 [2025-03-04 15:11:24,138 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:11:24,138 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:11:24,138 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:11:24,139 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:11:24,145 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:24" (1/1) ... [2025-03-04 15:11:24,145 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:24" (1/1) ... [2025-03-04 15:11:24,148 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:24" (1/1) ... [2025-03-04 15:11:24,163 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 15:11:24,165 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:24" (1/1) ... [2025-03-04 15:11:24,165 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:24" (1/1) ... [2025-03-04 15:11:24,176 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:24" (1/1) ... [2025-03-04 15:11:24,177 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:24" (1/1) ... [2025-03-04 15:11:24,178 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:24" (1/1) ... [2025-03-04 15:11:24,178 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:24" (1/1) ... [2025-03-04 15:11:24,185 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:11:24,186 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:11:24,187 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:11:24,187 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:11:24,187 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:24" (1/1) ... [2025-03-04 15:11:24,196 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:11:24,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:11:24,220 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 15:11:24,223 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 15:11:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-04 15:11:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:11:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-04 15:11:24,241 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-04 15:11:24,241 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-04 15:11:24,242 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-04 15:11:24,242 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2025-03-04 15:11:24,242 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2025-03-04 15:11:24,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:11:24,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-04 15:11:24,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:11:24,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:11:24,244 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 15:11:24,360 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:11:24,362 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:11:24,660 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:11:24,660 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:11:24,841 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:11:24,843 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:11:24,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:11:24 BoogieIcfgContainer [2025-03-04 15:11:24,844 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:11:24,845 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:11:24,846 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:11:24,849 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:11:24,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:11:23" (1/3) ... [2025-03-04 15:11:24,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e43948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:11:24, skipping insertion in model container [2025-03-04 15:11:24,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:11:24" (2/3) ... [2025-03-04 15:11:24,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e43948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:11:24, skipping insertion in model container [2025-03-04 15:11:24,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:11:24" (3/3) ... [2025-03-04 15:11:24,852 INFO L128 eAbstractionObserver]: Analyzing ICFG mix010.opt.i [2025-03-04 15:11:24,862 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:11:24,864 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix010.opt.i that has 4 procedures, 43 locations, 1 initial locations, 0 loop locations, and 6 error locations. [2025-03-04 15:11:24,865 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:11:24,909 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-04 15:11:24,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 52 places, 42 transitions, 96 flow [2025-03-04 15:11:24,957 INFO L124 PetriNetUnfolderBase]: 0/39 cut-off events. [2025-03-04 15:11:24,959 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:11:24,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49 conditions, 39 events. 0/39 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 99 event pairs, 0 based on Foata normal form. 0/33 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2025-03-04 15:11:24,964 INFO L82 GeneralOperation]: Start removeDead. Operand has 52 places, 42 transitions, 96 flow [2025-03-04 15:11:24,966 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 39 transitions, 87 flow [2025-03-04 15:11:24,971 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:11:24,979 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;@45f92922, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:11:24,980 INFO L334 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2025-03-04 15:11:24,983 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:11:24,984 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-04 15:11:24,984 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:11:24,984 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:11:24,984 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:11:24,985 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-03-04 15:11:24,988 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:11:24,988 INFO L85 PathProgramCache]: Analyzing trace with hash 2016525945, now seen corresponding path program 1 times [2025-03-04 15:11:24,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:11:24,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288951678] [2025-03-04 15:11:24,994 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:11:24,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:11:25,052 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-04 15:11:25,069 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-04 15:11:25,069 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:11:25,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:11:25,187 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 15:11:25,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:11:25,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288951678] [2025-03-04 15:11:25,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288951678] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:11:25,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:11:25,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 15:11:25,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905667037] [2025-03-04 15:11:25,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:11:25,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:11:25,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:11:25,217 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:11:25,218 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:11:25,219 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2025-03-04 15:11:25,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 39 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 15:11:25,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:11:25,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2025-03-04 15:11:25,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:11:26,390 INFO L124 PetriNetUnfolderBase]: 8585/12247 cut-off events. [2025-03-04 15:11:26,391 INFO L125 PetriNetUnfolderBase]: For 56/56 co-relation queries the response was YES. [2025-03-04 15:11:26,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24616 conditions, 12247 events. 8585/12247 cut-off events. For 56/56 co-relation queries the response was YES. Maximal size of possible extension queue 396. Compared 66781 event pairs, 3195 based on Foata normal form. 0/10875 useless extension candidates. Maximal degree in co-relation 24605. Up to 9377 conditions per place. [2025-03-04 15:11:26,457 INFO L140 encePairwiseOnDemand]: 32/42 looper letters, 57 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2025-03-04 15:11:26,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 64 transitions, 265 flow [2025-03-04 15:11:26,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:11:26,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:11:26,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 85 transitions. [2025-03-04 15:11:26,470 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6746031746031746 [2025-03-04 15:11:26,472 INFO L175 Difference]: Start difference. First operand has 49 places, 39 transitions, 87 flow. Second operand 3 states and 85 transitions. [2025-03-04 15:11:26,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 64 transitions, 265 flow [2025-03-04 15:11:26,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 64 transitions, 260 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:11:26,483 INFO L231 Difference]: Finished difference. Result has 49 places, 42 transitions, 120 flow [2025-03-04 15:11:26,485 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=49, PETRI_TRANSITIONS=42} [2025-03-04 15:11:26,488 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 0 predicate places. [2025-03-04 15:11:26,488 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 42 transitions, 120 flow [2025-03-04 15:11:26,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 15:11:26,489 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:11:26,489 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:11:26,489 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:11:26,489 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-03-04 15:11:26,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:11:26,490 INFO L85 PathProgramCache]: Analyzing trace with hash 2006923465, now seen corresponding path program 1 times [2025-03-04 15:11:26,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:11:26,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312110175] [2025-03-04 15:11:26,490 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:11:26,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:11:26,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 15:11:26,551 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 15:11:26,552 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:11:26,552 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:11:26,698 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 15:11:26,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:11:26,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312110175] [2025-03-04 15:11:26,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312110175] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:11:26,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:11:26,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:11:26,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329000938] [2025-03-04 15:11:26,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:11:26,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:11:26,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:11:26,700 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:11:26,700 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:11:26,700 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2025-03-04 15:11:26,701 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 42 transitions, 120 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 15:11:26,701 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:11:26,701 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2025-03-04 15:11:26,701 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:11:27,531 INFO L124 PetriNetUnfolderBase]: 7130/10154 cut-off events. [2025-03-04 15:11:27,531 INFO L125 PetriNetUnfolderBase]: For 586/586 co-relation queries the response was YES. [2025-03-04 15:11:27,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22694 conditions, 10154 events. 7130/10154 cut-off events. For 586/586 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 53953 event pairs, 2666 based on Foata normal form. 0/9546 useless extension candidates. Maximal degree in co-relation 22683. Up to 7283 conditions per place. [2025-03-04 15:11:27,605 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 54 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2025-03-04 15:11:27,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 61 transitions, 272 flow [2025-03-04 15:11:27,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:11:27,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:11:27,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2025-03-04 15:11:27,609 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5059523809523809 [2025-03-04 15:11:27,609 INFO L175 Difference]: Start difference. First operand has 49 places, 42 transitions, 120 flow. Second operand 4 states and 85 transitions. [2025-03-04 15:11:27,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 61 transitions, 272 flow [2025-03-04 15:11:27,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 268 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:11:27,617 INFO L231 Difference]: Finished difference. Result has 48 places, 39 transitions, 112 flow [2025-03-04 15:11:27,617 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=112, PETRI_PLACES=48, PETRI_TRANSITIONS=39} [2025-03-04 15:11:27,617 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, -1 predicate places. [2025-03-04 15:11:27,618 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 39 transitions, 112 flow [2025-03-04 15:11:27,618 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 15:11:27,618 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:11:27,618 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:11:27,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 15:11:27,618 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-03-04 15:11:27,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:11:27,620 INFO L85 PathProgramCache]: Analyzing trace with hash 2006923466, now seen corresponding path program 1 times [2025-03-04 15:11:27,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:11:27,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47677031] [2025-03-04 15:11:27,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:11:27,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:11:27,641 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 15:11:27,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 15:11:27,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:11:27,651 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:11:27,769 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 15:11:27,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:11:27,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47677031] [2025-03-04 15:11:27,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47677031] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:11:27,769 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:11:27,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:11:27,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741200001] [2025-03-04 15:11:27,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:11:27,769 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:11:27,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:11:27,770 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:11:27,770 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:11:27,770 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2025-03-04 15:11:27,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 112 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 15:11:27,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:11:27,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2025-03-04 15:11:27,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:11:28,347 INFO L124 PetriNetUnfolderBase]: 6029/8583 cut-off events. [2025-03-04 15:11:28,348 INFO L125 PetriNetUnfolderBase]: For 1456/1456 co-relation queries the response was YES. [2025-03-04 15:11:28,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18949 conditions, 8583 events. 6029/8583 cut-off events. For 1456/1456 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 44574 event pairs, 2035 based on Foata normal form. 0/8487 useless extension candidates. Maximal degree in co-relation 18937. Up to 3696 conditions per place. [2025-03-04 15:11:28,375 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 74 selfloop transitions, 7 changer transitions 3/87 dead transitions. [2025-03-04 15:11:28,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 87 transitions, 388 flow [2025-03-04 15:11:28,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:11:28,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:11:28,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 111 transitions. [2025-03-04 15:11:28,381 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6607142857142857 [2025-03-04 15:11:28,381 INFO L175 Difference]: Start difference. First operand has 48 places, 39 transitions, 112 flow. Second operand 4 states and 111 transitions. [2025-03-04 15:11:28,382 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 87 transitions, 388 flow [2025-03-04 15:11:28,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 87 transitions, 383 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-04 15:11:28,386 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 133 flow [2025-03-04 15:11:28,386 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2025-03-04 15:11:28,387 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, 1 predicate places. [2025-03-04 15:11:28,387 INFO L471 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 133 flow [2025-03-04 15:11:28,387 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 15:11:28,388 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:11:28,388 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:11:28,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 15:11:28,388 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 11 more)] === [2025-03-04 15:11:28,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:11:28,389 INFO L85 PathProgramCache]: Analyzing trace with hash -509508134, now seen corresponding path program 1 times [2025-03-04 15:11:28,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:11:28,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222280526] [2025-03-04 15:11:28,389 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:11:28,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:11:28,407 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 24 statements into 1 equivalence classes. [2025-03-04 15:11:28,432 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 24 of 24 statements. [2025-03-04 15:11:28,432 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:11:28,432 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:11:28,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:11:28,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:11:28,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222280526] [2025-03-04 15:11:28,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222280526] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:11:28,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:11:28,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 15:11:28,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557713019] [2025-03-04 15:11:28,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:11:28,593 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:11:28,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:11:28,594 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:11:28,594 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:11:28,594 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 42 [2025-03-04 15:11:28,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 133 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:11:28,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:11:28,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 42 [2025-03-04 15:11:28,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:11:29,091 INFO L124 PetriNetUnfolderBase]: 5713/8127 cut-off events. [2025-03-04 15:11:29,091 INFO L125 PetriNetUnfolderBase]: For 3378/3378 co-relation queries the response was YES. [2025-03-04 15:11:29,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19266 conditions, 8127 events. 5713/8127 cut-off events. For 3378/3378 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 42333 event pairs, 1965 based on Foata normal form. 84/8199 useless extension candidates. Maximal degree in co-relation 19253. Up to 3696 conditions per place. [2025-03-04 15:11:29,106 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 0 selfloop transitions, 0 changer transitions 81/81 dead transitions. [2025-03-04 15:11:29,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 81 transitions, 367 flow [2025-03-04 15:11:29,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-04 15:11:29,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-04 15:11:29,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 111 transitions. [2025-03-04 15:11:29,107 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5285714285714286 [2025-03-04 15:11:29,107 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 133 flow. Second operand 5 states and 111 transitions. [2025-03-04 15:11:29,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 81 transitions, 367 flow [2025-03-04 15:11:29,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 81 transitions, 343 flow, removed 3 selfloop flow, removed 4 redundant places. [2025-03-04 15:11:29,114 INFO L231 Difference]: Finished difference. Result has 47 places, 0 transitions, 0 flow [2025-03-04 15:11:29,114 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=42, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=47, PETRI_TRANSITIONS=0} [2025-03-04 15:11:29,115 INFO L279 CegarLoopForPetriNet]: 49 programPoint places, -2 predicate places. [2025-03-04 15:11:29,115 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 0 transitions, 0 flow [2025-03-04 15:11:29,115 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:11:29,117 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 15 remaining) [2025-03-04 15:11:29,117 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 15 remaining) [2025-03-04 15:11:29,117 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 15 remaining) [2025-03-04 15:11:29,117 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 15 remaining) [2025-03-04 15:11:29,117 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 15 remaining) [2025-03-04 15:11:29,118 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 15 remaining) [2025-03-04 15:11:29,118 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 15 remaining) [2025-03-04 15:11:29,118 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 15 remaining) [2025-03-04 15:11:29,118 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 15 remaining) [2025-03-04 15:11:29,118 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 15 remaining) [2025-03-04 15:11:29,118 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 15 remaining) [2025-03-04 15:11:29,118 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 15 remaining) [2025-03-04 15:11:29,118 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 15 remaining) [2025-03-04 15:11:29,118 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 15 remaining) [2025-03-04 15:11:29,118 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 15 remaining) [2025-03-04 15:11:29,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 15:11:29,119 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2025-03-04 15:11:29,124 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 15:11:29,125 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 15:11:29,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 03:11:29 BasicIcfg [2025-03-04 15:11:29,130 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 15:11:29,132 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 15:11:29,132 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 15:11:29,133 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 15:11:29,133 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:11:24" (3/4) ... [2025-03-04 15:11:29,135 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 15:11:29,137 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2025-03-04 15:11:29,137 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2025-03-04 15:11:29,137 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P2 [2025-03-04 15:11:29,141 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 47 nodes and edges [2025-03-04 15:11:29,141 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2025-03-04 15:11:29,141 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2025-03-04 15:11:29,142 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-04 15:11:29,198 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 15:11:29,199 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 15:11:29,199 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 15:11:29,200 INFO L158 Benchmark]: Toolchain (without parser) took 5534.09ms. Allocated memory was 142.6MB in the beginning and 570.4MB in the end (delta: 427.8MB). Free memory was 113.1MB in the beginning and 206.0MB in the end (delta: -92.8MB). Peak memory consumption was 334.6MB. Max. memory is 16.1GB. [2025-03-04 15:11:29,200 INFO L158 Benchmark]: CDTParser took 0.73ms. Allocated memory is still 201.3MB. Free memory is still 123.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:11:29,200 INFO L158 Benchmark]: CACSL2BoogieTranslator took 433.02ms. Allocated memory is still 142.6MB. Free memory was 113.1MB in the beginning and 89.1MB in the end (delta: 24.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 15:11:29,200 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.52ms. Allocated memory is still 142.6MB. Free memory was 89.1MB in the beginning and 86.6MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:11:29,200 INFO L158 Benchmark]: Boogie Preprocessor took 47.50ms. Allocated memory is still 142.6MB. Free memory was 86.6MB in the beginning and 83.5MB in the end (delta: 3.0MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:11:29,201 INFO L158 Benchmark]: IcfgBuilder took 657.27ms. Allocated memory is still 142.6MB. Free memory was 83.5MB in the beginning and 92.3MB in the end (delta: -8.7MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. [2025-03-04 15:11:29,201 INFO L158 Benchmark]: TraceAbstraction took 4284.86ms. Allocated memory was 142.6MB in the beginning and 570.4MB in the end (delta: 427.8MB). Free memory was 91.5MB in the beginning and 214.3MB in the end (delta: -122.9MB). Peak memory consumption was 366.5MB. Max. memory is 16.1GB. [2025-03-04 15:11:29,201 INFO L158 Benchmark]: Witness Printer took 66.83ms. Allocated memory is still 570.4MB. Free memory was 214.3MB in the beginning and 206.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 15:11:29,202 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73ms. Allocated memory is still 201.3MB. Free memory is still 123.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 433.02ms. Allocated memory is still 142.6MB. Free memory was 113.1MB in the beginning and 89.1MB in the end (delta: 24.0MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.52ms. Allocated memory is still 142.6MB. Free memory was 89.1MB in the beginning and 86.6MB in the end (delta: 2.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 47.50ms. Allocated memory is still 142.6MB. Free memory was 86.6MB in the beginning and 83.5MB in the end (delta: 3.0MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 657.27ms. Allocated memory is still 142.6MB. Free memory was 83.5MB in the beginning and 92.3MB in the end (delta: -8.7MB). Peak memory consumption was 56.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4284.86ms. Allocated memory was 142.6MB in the beginning and 570.4MB in the end (delta: 427.8MB). Free memory was 91.5MB in the beginning and 214.3MB in the end (delta: -122.9MB). Peak memory consumption was 366.5MB. Max. memory is 16.1GB. * Witness Printer took 66.83ms. Allocated memory is still 570.4MB. Free memory was 214.3MB in the beginning and 206.0MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 759]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 759]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 793]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 793]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 838]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 838]: 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 7 procedures, 76 locations, 15 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: 4.2s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 181 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 181 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 363 IncrementalHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 0 mSDtfsCounter, 363 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=3, InterpolantAutomatonStates: 16, 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, 0.5s InterpolantComputationTime, 63 NumberOfCodeBlocks, 63 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 59 ConstructedInterpolants, 0 QuantifiedInterpolants, 177 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 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-04 15:11:29,219 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