./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-wmm/mix022_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/mix022_tso.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 c9c6cc212d45f96c9e6587b0ee0d7644c3fabb2c198a03ef385d6df2e7b46689 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-09 06:25:28,373 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-09 06:25:28,435 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-09 06:25:28,441 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-09 06:25:28,443 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-09 06:25:28,465 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-09 06:25:28,466 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-09 06:25:28,467 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-09 06:25:28,467 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-09 06:25:28,467 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-09 06:25:28,468 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-09 06:25:28,468 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-09 06:25:28,468 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-09 06:25:28,468 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-09 06:25:28,468 INFO L153 SettingsManager]: * Use SBE=true [2025-03-09 06:25:28,469 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-09 06:25:28,469 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-09 06:25:28,469 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-09 06:25:28,469 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-09 06:25:28,469 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-09 06:25:28,469 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-09 06:25:28,469 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-09 06:25:28,470 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-09 06:25:28,470 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-09 06:25:28,470 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-09 06:25:28,470 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-09 06:25:28,470 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-09 06:25:28,470 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-09 06:25:28,470 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-09 06:25:28,470 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-09 06:25:28,470 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-09 06:25:28,470 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-09 06:25:28,470 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-09 06:25:28,470 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-09 06:25:28,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:25:28,471 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-09 06:25:28,471 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-09 06:25:28,471 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-09 06:25:28,471 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-09 06:25:28,471 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-09 06:25:28,471 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-09 06:25:28,472 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-09 06:25:28,472 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-09 06:25:28,472 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-09 06:25:28,472 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-09 06:25:28,472 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 -> c9c6cc212d45f96c9e6587b0ee0d7644c3fabb2c198a03ef385d6df2e7b46689 [2025-03-09 06:25:28,691 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-09 06:25:28,698 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-09 06:25:28,700 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-09 06:25:28,701 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-09 06:25:28,701 INFO L274 PluginConnector]: CDTParser initialized [2025-03-09 06:25:28,702 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/mix022_tso.i [2025-03-09 06:25:29,880 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ac92b23f/bcf04f6accf4493b87d49c6df977bd82/FLAG75afea972 [2025-03-09 06:25:30,144 INFO L384 CDTParser]: Found 1 translation units. [2025-03-09 06:25:30,145 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/mix022_tso.i [2025-03-09 06:25:30,154 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ac92b23f/bcf04f6accf4493b87d49c6df977bd82/FLAG75afea972 [2025-03-09 06:25:30,458 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ac92b23f/bcf04f6accf4493b87d49c6df977bd82 [2025-03-09 06:25:30,460 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-09 06:25:30,460 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-09 06:25:30,461 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-09 06:25:30,461 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-09 06:25:30,465 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-09 06:25:30,466 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:25:30" (1/1) ... [2025-03-09 06:25:30,467 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c4a528c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:25:30, skipping insertion in model container [2025-03-09 06:25:30,468 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.03 06:25:30" (1/1) ... [2025-03-09 06:25:30,494 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-09 06:25:30,789 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:25:30,798 INFO L200 MainTranslator]: Completed pre-run [2025-03-09 06:25:30,862 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-09 06:25:30,890 INFO L204 MainTranslator]: Completed translation [2025-03-09 06:25:30,890 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:25:30 WrapperNode [2025-03-09 06:25:30,890 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-09 06:25:30,891 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-09 06:25:30,891 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-09 06:25:30,891 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-09 06:25:30,895 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:25:30" (1/1) ... [2025-03-09 06:25:30,909 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:25:30" (1/1) ... [2025-03-09 06:25:30,940 INFO L138 Inliner]: procedures = 174, calls = 36, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 151 [2025-03-09 06:25:30,940 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-09 06:25:30,940 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-09 06:25:30,941 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-09 06:25:30,941 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-09 06:25:30,949 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:25:30" (1/1) ... [2025-03-09 06:25:30,950 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:25:30" (1/1) ... [2025-03-09 06:25:30,953 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:25:30" (1/1) ... [2025-03-09 06:25:30,973 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-09 06:25:30,973 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:25:30" (1/1) ... [2025-03-09 06:25:30,974 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:25:30" (1/1) ... [2025-03-09 06:25:30,983 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:25:30" (1/1) ... [2025-03-09 06:25:30,984 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:25:30" (1/1) ... [2025-03-09 06:25:30,985 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:25:30" (1/1) ... [2025-03-09 06:25:30,985 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:25:30" (1/1) ... [2025-03-09 06:25:30,990 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-09 06:25:30,992 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-09 06:25:30,993 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-09 06:25:30,993 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-09 06:25:30,993 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:25:30" (1/1) ... [2025-03-09 06:25:30,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-09 06:25:31,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-09 06:25:31,023 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-09 06:25:31,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-09 06:25:31,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-09 06:25:31,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-09 06:25:31,044 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2025-03-09 06:25:31,044 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2025-03-09 06:25:31,044 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2025-03-09 06:25:31,044 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2025-03-09 06:25:31,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-09 06:25:31,044 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-09 06:25:31,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-09 06:25:31,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-09 06:25:31,045 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-09 06:25:31,143 INFO L256 CfgBuilder]: Building ICFG [2025-03-09 06:25:31,145 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-09 06:25:31,364 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-09 06:25:31,364 INFO L307 CfgBuilder]: Performing block encoding [2025-03-09 06:25:31,537 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-09 06:25:31,537 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-09 06:25:31,538 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:25:31 BoogieIcfgContainer [2025-03-09 06:25:31,538 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-09 06:25:31,539 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-09 06:25:31,539 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-09 06:25:31,542 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-09 06:25:31,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.03 06:25:30" (1/3) ... [2025-03-09 06:25:31,542 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5711c7a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:25:31, skipping insertion in model container [2025-03-09 06:25:31,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.03 06:25:30" (2/3) ... [2025-03-09 06:25:31,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5711c7a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.03 06:25:31, skipping insertion in model container [2025-03-09 06:25:31,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:25:31" (3/3) ... [2025-03-09 06:25:31,544 INFO L128 eAbstractionObserver]: Analyzing ICFG mix022_tso.i [2025-03-09 06:25:31,555 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-09 06:25:31,556 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG mix022_tso.i that has 3 procedures, 30 locations, 1 initial locations, 0 loop locations, and 4 error locations. [2025-03-09 06:25:31,556 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-09 06:25:31,598 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2025-03-09 06:25:31,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 29 transitions, 66 flow [2025-03-09 06:25:31,641 INFO L124 PetriNetUnfolderBase]: 0/27 cut-off events. [2025-03-09 06:25:31,644 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:25:31,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 0/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2025-03-09 06:25:31,649 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 29 transitions, 66 flow [2025-03-09 06:25:31,651 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 27 transitions, 60 flow [2025-03-09 06:25:31,656 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-09 06:25:31,668 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;@35c370f0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-09 06:25:31,668 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2025-03-09 06:25:31,677 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-09 06:25:31,677 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2025-03-09 06:25:31,677 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-09 06:25:31,677 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:25:31,678 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:25:31,678 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:25:31,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:25:31,690 INFO L85 PathProgramCache]: Analyzing trace with hash -13419888, now seen corresponding path program 1 times [2025-03-09 06:25:31,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:25:31,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372347422] [2025-03-09 06:25:31,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:25:31,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:25:31,772 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-09 06:25:31,807 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-09 06:25:31,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:25:31,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:25:31,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:25:31,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:25:31,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372347422] [2025-03-09 06:25:31,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372347422] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:25:31,942 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:25:31,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-09 06:25:31,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428512338] [2025-03-09 06:25:31,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:25:31,947 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-09 06:25:31,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:25:31,968 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-09 06:25:31,969 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-09 06:25:31,970 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2025-03-09 06:25:31,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:25:31,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:25:31,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2025-03-09 06:25:31,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:25:32,288 INFO L124 PetriNetUnfolderBase]: 542/908 cut-off events. [2025-03-09 06:25:32,289 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-09 06:25:32,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1831 conditions, 908 events. 542/908 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4012 event pairs, 246 based on Foata normal form. 0/849 useless extension candidates. Maximal degree in co-relation 1821. Up to 553 conditions per place. [2025-03-09 06:25:32,300 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 37 selfloop transitions, 3 changer transitions 2/44 dead transitions. [2025-03-09 06:25:32,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 44 transitions, 181 flow [2025-03-09 06:25:32,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-09 06:25:32,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-09 06:25:32,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2025-03-09 06:25:32,313 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6666666666666666 [2025-03-09 06:25:32,314 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 60 flow. Second operand 3 states and 58 transitions. [2025-03-09 06:25:32,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 44 transitions, 181 flow [2025-03-09 06:25:32,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 44 transitions, 178 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-09 06:25:32,321 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 75 flow [2025-03-09 06:25:32,322 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2025-03-09 06:25:32,325 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2025-03-09 06:25:32,326 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 75 flow [2025-03-09 06:25:32,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:25:32,326 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:25:32,326 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:25:32,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-09 06:25:32,327 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:25:32,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:25:32,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1322764926, now seen corresponding path program 1 times [2025-03-09 06:25:32,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:25:32,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429670953] [2025-03-09 06:25:32,328 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:25:32,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:25:32,342 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:25:32,410 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:25:32,410 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:25:32,410 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:25:32,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:25:32,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:25:32,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429670953] [2025-03-09 06:25:32,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429670953] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:25:32,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:25:32,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:25:32,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228041040] [2025-03-09 06:25:32,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:25:32,567 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:25:32,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:25:32,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:25:32,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:25:32,568 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2025-03-09 06:25:32,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 75 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:25:32,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:25:32,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2025-03-09 06:25:32,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:25:32,794 INFO L124 PetriNetUnfolderBase]: 452/762 cut-off events. [2025-03-09 06:25:32,794 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2025-03-09 06:25:32,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1698 conditions, 762 events. 452/762 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3331 event pairs, 218 based on Foata normal form. 0/759 useless extension candidates. Maximal degree in co-relation 1687. Up to 406 conditions per place. [2025-03-09 06:25:32,801 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 35 selfloop transitions, 3 changer transitions 0/40 dead transitions. [2025-03-09 06:25:32,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 175 flow [2025-03-09 06:25:32,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:25:32,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:25:32,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 56 transitions. [2025-03-09 06:25:32,803 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4827586206896552 [2025-03-09 06:25:32,803 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 75 flow. Second operand 4 states and 56 transitions. [2025-03-09 06:25:32,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 175 flow [2025-03-09 06:25:32,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 40 transitions, 172 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-09 06:25:32,805 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 70 flow [2025-03-09 06:25:32,805 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=70, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2025-03-09 06:25:32,806 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2025-03-09 06:25:32,806 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 70 flow [2025-03-09 06:25:32,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:25:32,806 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-09 06:25:32,806 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-09 06:25:32,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-09 06:25:32,807 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2025-03-09 06:25:32,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-09 06:25:32,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1322764925, now seen corresponding path program 1 times [2025-03-09 06:25:32,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-09 06:25:32,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049698857] [2025-03-09 06:25:32,808 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-09 06:25:32,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-09 06:25:32,823 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-09 06:25:32,848 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-09 06:25:32,848 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-09 06:25:32,848 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-09 06:25:32,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-09 06:25:32,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-09 06:25:32,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049698857] [2025-03-09 06:25:32,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049698857] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-09 06:25:32,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-09 06:25:32,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-09 06:25:32,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950962648] [2025-03-09 06:25:32,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-09 06:25:32,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-09 06:25:32,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-09 06:25:32,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-09 06:25:32,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-09 06:25:32,972 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 29 [2025-03-09 06:25:32,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 25 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:25:32,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-09 06:25:32,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 29 [2025-03-09 06:25:32,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-09 06:25:33,177 INFO L124 PetriNetUnfolderBase]: 414/696 cut-off events. [2025-03-09 06:25:33,178 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2025-03-09 06:25:33,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1539 conditions, 696 events. 414/696 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3021 event pairs, 204 based on Foata normal form. 28/721 useless extension candidates. Maximal degree in co-relation 1527. Up to 353 conditions per place. [2025-03-09 06:25:33,180 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 0 selfloop transitions, 0 changer transitions 38/38 dead transitions. [2025-03-09 06:25:33,180 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 38 transitions, 166 flow [2025-03-09 06:25:33,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-09 06:25:33,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-09 06:25:33,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 54 transitions. [2025-03-09 06:25:33,182 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46551724137931033 [2025-03-09 06:25:33,182 INFO L175 Difference]: Start difference. First operand has 35 places, 25 transitions, 70 flow. Second operand 4 states and 54 transitions. [2025-03-09 06:25:33,182 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 38 transitions, 166 flow [2025-03-09 06:25:33,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 38 transitions, 159 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-09 06:25:33,183 INFO L231 Difference]: Finished difference. Result has 33 places, 0 transitions, 0 flow [2025-03-09 06:25:33,183 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=33, PETRI_TRANSITIONS=0} [2025-03-09 06:25:33,184 INFO L279 CegarLoopForPetriNet]: 34 programPoint places, -1 predicate places. [2025-03-09 06:25:33,184 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 0 transitions, 0 flow [2025-03-09 06:25:33,184 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-09 06:25:33,189 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 10 remaining) [2025-03-09 06:25:33,190 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 10 remaining) [2025-03-09 06:25:33,190 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2025-03-09 06:25:33,190 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2025-03-09 06:25:33,190 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 10 remaining) [2025-03-09 06:25:33,190 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 10 remaining) [2025-03-09 06:25:33,190 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2025-03-09 06:25:33,190 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2025-03-09 06:25:33,190 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2025-03-09 06:25:33,190 INFO L782 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2025-03-09 06:25:33,190 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-09 06:25:33,190 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2025-03-09 06:25:33,199 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-09 06:25:33,199 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-09 06:25:33,210 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.03 06:25:33 BasicIcfg [2025-03-09 06:25:33,211 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-09 06:25:33,211 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-09 06:25:33,211 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-09 06:25:33,211 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-09 06:25:33,212 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.03 06:25:31" (3/4) ... [2025-03-09 06:25:33,214 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-09 06:25:33,216 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P0 [2025-03-09 06:25:33,217 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure P1 [2025-03-09 06:25:33,220 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 38 nodes and edges [2025-03-09 06:25:33,221 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-03-09 06:25:33,221 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2025-03-09 06:25:33,221 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-09 06:25:33,286 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-09 06:25:33,286 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-09 06:25:33,287 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-09 06:25:33,287 INFO L158 Benchmark]: Toolchain (without parser) took 2826.63ms. Allocated memory is still 142.6MB. Free memory was 109.4MB in the beginning and 84.7MB in the end (delta: 24.7MB). Peak memory consumption was 24.2MB. Max. memory is 16.1GB. [2025-03-09 06:25:33,287 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 123.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:25:33,287 INFO L158 Benchmark]: CACSL2BoogieTranslator took 429.37ms. Allocated memory is still 142.6MB. Free memory was 109.4MB in the beginning and 86.0MB in the end (delta: 23.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-09 06:25:33,288 INFO L158 Benchmark]: Boogie Procedure Inliner took 48.89ms. Allocated memory is still 142.6MB. Free memory was 86.0MB in the beginning and 83.3MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:25:33,288 INFO L158 Benchmark]: Boogie Preprocessor took 49.49ms. Allocated memory is still 142.6MB. Free memory was 83.3MB in the beginning and 79.8MB in the end (delta: 3.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-09 06:25:33,288 INFO L158 Benchmark]: IcfgBuilder took 545.33ms. Allocated memory is still 142.6MB. Free memory was 79.8MB in the beginning and 87.4MB in the end (delta: -7.6MB). Peak memory consumption was 48.0MB. Max. memory is 16.1GB. [2025-03-09 06:25:33,289 INFO L158 Benchmark]: TraceAbstraction took 1671.71ms. Allocated memory is still 142.6MB. Free memory was 87.4MB in the beginning and 90.4MB in the end (delta: -3.1MB). Peak memory consumption was 61.0MB. Max. memory is 16.1GB. [2025-03-09 06:25:33,289 INFO L158 Benchmark]: Witness Printer took 75.41ms. Allocated memory is still 142.6MB. Free memory was 90.4MB in the beginning and 84.7MB in the end (delta: 5.8MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-09 06:25:33,290 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 201.3MB. Free memory is still 123.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 429.37ms. Allocated memory is still 142.6MB. Free memory was 109.4MB in the beginning and 86.0MB in the end (delta: 23.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 48.89ms. Allocated memory is still 142.6MB. Free memory was 86.0MB in the beginning and 83.3MB in the end (delta: 2.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 49.49ms. Allocated memory is still 142.6MB. Free memory was 83.3MB in the beginning and 79.8MB in the end (delta: 3.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 545.33ms. Allocated memory is still 142.6MB. Free memory was 79.8MB in the beginning and 87.4MB in the end (delta: -7.6MB). Peak memory consumption was 48.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1671.71ms. Allocated memory is still 142.6MB. Free memory was 87.4MB in the beginning and 90.4MB in the end (delta: -3.1MB). Peak memory consumption was 61.0MB. Max. memory is 16.1GB. * Witness Printer took 75.41ms. Allocated memory is still 142.6MB. Free memory was 90.4MB in the beginning and 84.7MB in the end (delta: 5.8MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 751]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 751]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 795]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 795]: 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, 51 locations, 48 edges, 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: 1.6s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 60 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 60 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 164 IncrementalHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 0 mSDtfsCounter, 164 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75occurred in iteration=1, InterpolantAutomatonStates: 11, 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, 0.4s InterpolantComputationTime, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 102 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2025-03-09 06:25:33,305 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