./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-theta/unwind1-nondet.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-theta/unwind1-nondet.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 591990a0070f9287f734f2988edce5e1b5a43791c74b5c6b7374ff93ddaa2267 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:48:15,703 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:48:15,745 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:48:15,749 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:48:15,750 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:48:15,773 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:48:15,773 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:48:15,773 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:48:15,774 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:48:15,774 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:48:15,774 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:48:15,774 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:48:15,774 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:48:15,774 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:48:15,774 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:48:15,774 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:48:15,774 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:48:15,774 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:48:15,774 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:48:15,774 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:48:15,775 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:48:15,775 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:48:15,776 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:48:15,776 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:48:15,776 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:48:15,776 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:48:15,776 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:48:15,776 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:48:15,776 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:48:15,776 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:48:15,777 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:48:15,777 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:48:15,777 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:48:15,777 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:48:15,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:48:15,777 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:48:15,777 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:48:15,777 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:48:15,777 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:48:15,777 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:48:15,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:48:15,777 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:48:15,777 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:48:15,777 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:48:15,778 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:48:15,778 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 -> 591990a0070f9287f734f2988edce5e1b5a43791c74b5c6b7374ff93ddaa2267 [2025-03-17 19:48:15,996 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:48:16,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:48:16,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:48:16,006 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:48:16,006 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:48:16,008 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-theta/unwind1-nondet.i [2025-03-17 19:48:17,155 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6240b42b0/c20bac867fed4a91af114ddcd9f403af/FLAGb602d7346 [2025-03-17 19:48:17,444 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:48:17,444 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-theta/unwind1-nondet.i [2025-03-17 19:48:17,455 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6240b42b0/c20bac867fed4a91af114ddcd9f403af/FLAGb602d7346 [2025-03-17 19:48:17,468 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6240b42b0/c20bac867fed4a91af114ddcd9f403af [2025-03-17 19:48:17,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:48:17,472 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:48:17,474 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:48:17,474 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:48:17,478 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:48:17,479 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:48:17" (1/1) ... [2025-03-17 19:48:17,481 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c6fdc57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:17, skipping insertion in model container [2025-03-17 19:48:17,481 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:48:17" (1/1) ... [2025-03-17 19:48:17,500 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:48:17,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:48:17,749 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:48:17,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:48:17,821 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:48:17,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:17 WrapperNode [2025-03-17 19:48:17,822 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:48:17,823 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:48:17,824 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:48:17,824 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:48:17,830 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:17" (1/1) ... [2025-03-17 19:48:17,842 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:17" (1/1) ... [2025-03-17 19:48:17,858 INFO L138 Inliner]: procedures = 169, calls = 11, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 58 [2025-03-17 19:48:17,859 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:48:17,860 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:48:17,860 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:48:17,860 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:48:17,865 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:17" (1/1) ... [2025-03-17 19:48:17,865 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:17" (1/1) ... [2025-03-17 19:48:17,868 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:17" (1/1) ... [2025-03-17 19:48:17,880 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]. [2025-03-17 19:48:17,881 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:17" (1/1) ... [2025-03-17 19:48:17,881 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:17" (1/1) ... [2025-03-17 19:48:17,887 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:17" (1/1) ... [2025-03-17 19:48:17,888 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:17" (1/1) ... [2025-03-17 19:48:17,889 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:17" (1/1) ... [2025-03-17 19:48:17,889 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:17" (1/1) ... [2025-03-17 19:48:17,890 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:48:17,894 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:48:17,894 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:48:17,894 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:48:17,895 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:17" (1/1) ... [2025-03-17 19:48:17,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:48:17,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:48:17,922 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) [2025-03-17 19:48:17,924 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 [2025-03-17 19:48:17,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:48:17,942 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2025-03-17 19:48:17,942 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2025-03-17 19:48:17,942 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2025-03-17 19:48:17,942 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2025-03-17 19:48:17,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:48:17,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:48:17,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:48:17,943 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:48:18,033 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:48:18,035 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:48:18,137 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:48:18,138 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:48:18,211 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:48:18,211 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:48:18,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:48:18 BoogieIcfgContainer [2025-03-17 19:48:18,212 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:48:18,214 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:48:18,214 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:48:18,217 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:48:18,217 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:48:17" (1/3) ... [2025-03-17 19:48:18,217 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52782fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:48:18, skipping insertion in model container [2025-03-17 19:48:18,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:48:17" (2/3) ... [2025-03-17 19:48:18,218 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52782fed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:48:18, skipping insertion in model container [2025-03-17 19:48:18,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:48:18" (3/3) ... [2025-03-17 19:48:18,219 INFO L128 eAbstractionObserver]: Analyzing ICFG unwind1-nondet.i [2025-03-17 19:48:18,232 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:48:18,234 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG unwind1-nondet.i that has 3 procedures, 26 locations, 1 initial locations, 1 loop locations, and 4 error locations. [2025-03-17 19:48:18,234 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:48:18,273 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2025-03-17 19:48:18,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 27 transitions, 68 flow [2025-03-17 19:48:18,320 INFO L124 PetriNetUnfolderBase]: 2/25 cut-off events. [2025-03-17 19:48:18,322 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 19:48:18,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 25 events. 2/25 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 49 event pairs, 0 based on Foata normal form. 0/19 useless extension candidates. Maximal degree in co-relation 22. Up to 2 conditions per place. [2025-03-17 19:48:18,327 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 27 transitions, 68 flow [2025-03-17 19:48:18,329 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 23 transitions, 55 flow [2025-03-17 19:48:18,334 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:48:18,343 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;@492b43d0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:48:18,344 INFO L334 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2025-03-17 19:48:18,351 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:48:18,351 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2025-03-17 19:48:18,351 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:48:18,351 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:18,352 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2025-03-17 19:48:18,352 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-03-17 19:48:18,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:18,357 INFO L85 PathProgramCache]: Analyzing trace with hash 187947508, now seen corresponding path program 1 times [2025-03-17 19:48:18,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:18,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895725715] [2025-03-17 19:48:18,363 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:18,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:18,425 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 5 statements into 1 equivalence classes. [2025-03-17 19:48:18,438 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 5 of 5 statements. [2025-03-17 19:48:18,438 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:18,438 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:18,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:18,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:18,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895725715] [2025-03-17 19:48:18,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895725715] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:18,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:18,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:48:18,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226747899] [2025-03-17 19:48:18,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:18,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:48:18,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:18,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:48:18,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:48:18,593 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-03-17 19:48:18,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:18,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:18,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-03-17 19:48:18,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:18,668 INFO L124 PetriNetUnfolderBase]: 103/224 cut-off events. [2025-03-17 19:48:18,668 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2025-03-17 19:48:18,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 224 events. 103/224 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 936 event pairs, 78 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 396. Up to 178 conditions per place. [2025-03-17 19:48:18,673 INFO L140 encePairwiseOnDemand]: 25/27 looper letters, 16 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2025-03-17 19:48:18,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 87 flow [2025-03-17 19:48:18,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:48:18,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:48:18,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 39 transitions. [2025-03-17 19:48:18,683 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2025-03-17 19:48:18,684 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 55 flow. Second operand 3 states and 39 transitions. [2025-03-17 19:48:18,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 87 flow [2025-03-17 19:48:18,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 22 transitions, 82 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:48:18,688 INFO L231 Difference]: Finished difference. Result has 26 places, 22 transitions, 50 flow [2025-03-17 19:48:18,690 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=26, PETRI_TRANSITIONS=22} [2025-03-17 19:48:18,693 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, -2 predicate places. [2025-03-17 19:48:18,693 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 22 transitions, 50 flow [2025-03-17 19:48:18,693 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:18,694 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:18,694 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 19:48:18,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:48:18,694 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-03-17 19:48:18,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:18,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1531405605, now seen corresponding path program 1 times [2025-03-17 19:48:18,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:18,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861895249] [2025-03-17 19:48:18,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:18,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:18,701 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:48:18,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:48:18,705 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:18,705 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:18,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:18,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:18,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861895249] [2025-03-17 19:48:18,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861895249] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:18,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:18,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:48:18,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144434549] [2025-03-17 19:48:18,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:18,741 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:48:18,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:18,741 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:48:18,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:48:18,746 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 27 [2025-03-17 19:48:18,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 22 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2025-03-17 19:48:18,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:18,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 27 [2025-03-17 19:48:18,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:18,805 INFO L124 PetriNetUnfolderBase]: 103/222 cut-off events. [2025-03-17 19:48:18,805 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2025-03-17 19:48:18,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 419 conditions, 222 events. 103/222 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 923 event pairs, 78 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 413. Up to 178 conditions per place. [2025-03-17 19:48:18,809 INFO L140 encePairwiseOnDemand]: 25/27 looper letters, 15 selfloop transitions, 1 changer transitions 1/21 dead transitions. [2025-03-17 19:48:18,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 21 transitions, 82 flow [2025-03-17 19:48:18,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:48:18,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:48:18,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 36 transitions. [2025-03-17 19:48:18,811 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2025-03-17 19:48:18,811 INFO L175 Difference]: Start difference. First operand has 26 places, 22 transitions, 50 flow. Second operand 3 states and 36 transitions. [2025-03-17 19:48:18,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 21 transitions, 82 flow [2025-03-17 19:48:18,812 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 21 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:48:18,829 INFO L231 Difference]: Finished difference. Result has 26 places, 20 transitions, 47 flow [2025-03-17 19:48:18,829 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=47, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=47, PETRI_PLACES=26, PETRI_TRANSITIONS=20} [2025-03-17 19:48:18,829 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, -2 predicate places. [2025-03-17 19:48:18,830 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 20 transitions, 47 flow [2025-03-17 19:48:18,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 states have internal predecessors, (23), 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) [2025-03-17 19:48:18,830 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:18,830 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:18,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 19:48:18,830 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-03-17 19:48:18,831 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:18,831 INFO L85 PathProgramCache]: Analyzing trace with hash 215563389, now seen corresponding path program 1 times [2025-03-17 19:48:18,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:18,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815394798] [2025-03-17 19:48:18,831 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:18,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:18,838 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:48:18,844 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:48:18,844 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:18,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:18,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:18,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:18,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815394798] [2025-03-17 19:48:18,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815394798] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:18,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:18,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:18,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379731394] [2025-03-17 19:48:18,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:18,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:48:18,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:18,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:48:18,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:48:18,916 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-03-17 19:48:18,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 20 transitions, 47 flow. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2025-03-17 19:48:18,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:18,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-03-17 19:48:18,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:19,023 INFO L124 PetriNetUnfolderBase]: 146/279 cut-off events. [2025-03-17 19:48:19,024 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2025-03-17 19:48:19,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 279 events. 146/279 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 954 event pairs, 83 based on Foata normal form. 13/261 useless extension candidates. Maximal degree in co-relation 540. Up to 187 conditions per place. [2025-03-17 19:48:19,028 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 32 selfloop transitions, 3 changer transitions 0/38 dead transitions. [2025-03-17 19:48:19,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 38 transitions, 155 flow [2025-03-17 19:48:19,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:48:19,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:48:19,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2025-03-17 19:48:19,030 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6018518518518519 [2025-03-17 19:48:19,030 INFO L175 Difference]: Start difference. First operand has 26 places, 20 transitions, 47 flow. Second operand 4 states and 65 transitions. [2025-03-17 19:48:19,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 38 transitions, 155 flow [2025-03-17 19:48:19,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 38 transitions, 154 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:48:19,032 INFO L231 Difference]: Finished difference. Result has 29 places, 22 transitions, 68 flow [2025-03-17 19:48:19,032 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=68, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2025-03-17 19:48:19,032 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2025-03-17 19:48:19,032 INFO L471 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 68 flow [2025-03-17 19:48:19,034 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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) [2025-03-17 19:48:19,034 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:19,034 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:19,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:48:19,035 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-03-17 19:48:19,035 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:19,035 INFO L85 PathProgramCache]: Analyzing trace with hash 872974887, now seen corresponding path program 1 times [2025-03-17 19:48:19,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:19,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676633322] [2025-03-17 19:48:19,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:19,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:19,045 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:48:19,053 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:48:19,056 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:19,056 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:19,115 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-17 19:48:19,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:19,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676633322] [2025-03-17 19:48:19,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676633322] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:19,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:48:19,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:48:19,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593203718] [2025-03-17 19:48:19,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:19,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:48:19,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:19,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:48:19,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:48:19,118 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 27 [2025-03-17 19:48:19,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2025-03-17 19:48:19,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:19,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 27 [2025-03-17 19:48:19,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:19,186 INFO L124 PetriNetUnfolderBase]: 58/140 cut-off events. [2025-03-17 19:48:19,186 INFO L125 PetriNetUnfolderBase]: For 64/64 co-relation queries the response was YES. [2025-03-17 19:48:19,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 140 events. 58/140 cut-off events. For 64/64 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 419 event pairs, 21 based on Foata normal form. 13/144 useless extension candidates. Maximal degree in co-relation 321. Up to 65 conditions per place. [2025-03-17 19:48:19,188 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 17 selfloop transitions, 3 changer transitions 10/35 dead transitions. [2025-03-17 19:48:19,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 35 transitions, 160 flow [2025-03-17 19:48:19,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:48:19,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:48:19,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2025-03-17 19:48:19,189 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2025-03-17 19:48:19,189 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 68 flow. Second operand 5 states and 75 transitions. [2025-03-17 19:48:19,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 35 transitions, 160 flow [2025-03-17 19:48:19,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 35 transitions, 157 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:48:19,190 INFO L231 Difference]: Finished difference. Result has 35 places, 22 transitions, 81 flow [2025-03-17 19:48:19,190 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=81, PETRI_PLACES=35, PETRI_TRANSITIONS=22} [2025-03-17 19:48:19,190 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 7 predicate places. [2025-03-17 19:48:19,190 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 22 transitions, 81 flow [2025-03-17 19:48:19,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2025-03-17 19:48:19,190 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:19,190 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:19,191 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:48:19,191 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-03-17 19:48:19,191 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:19,191 INFO L85 PathProgramCache]: Analyzing trace with hash -281331879, now seen corresponding path program 1 times [2025-03-17 19:48:19,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:19,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669838404] [2025-03-17 19:48:19,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:19,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:19,200 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:48:19,205 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:48:19,208 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:19,208 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:19,261 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:19,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:19,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669838404] [2025-03-17 19:48:19,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669838404] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:48:19,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212544673] [2025-03-17 19:48:19,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:19,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:48:19,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:48:19,264 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:48:19,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-17 19:48:19,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:48:19,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:48:19,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:19,312 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:19,315 INFO L256 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:48:19,317 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:48:19,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:19,361 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-17 19:48:19,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [212544673] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:48:19,362 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-17 19:48:19,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2025-03-17 19:48:19,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481724072] [2025-03-17 19:48:19,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:48:19,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:48:19,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:19,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:48:19,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-17 19:48:19,370 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-03-17 19:48:19,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 22 transitions, 81 flow. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:19,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:19,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-03-17 19:48:19,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:19,460 INFO L124 PetriNetUnfolderBase]: 49/114 cut-off events. [2025-03-17 19:48:19,461 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2025-03-17 19:48:19,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 114 events. 49/114 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 280 event pairs, 15 based on Foata normal form. 5/108 useless extension candidates. Maximal degree in co-relation 291. Up to 46 conditions per place. [2025-03-17 19:48:19,461 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 25 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2025-03-17 19:48:19,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 33 transitions, 165 flow [2025-03-17 19:48:19,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:48:19,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:48:19,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 73 transitions. [2025-03-17 19:48:19,462 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4506172839506173 [2025-03-17 19:48:19,463 INFO L175 Difference]: Start difference. First operand has 35 places, 22 transitions, 81 flow. Second operand 6 states and 73 transitions. [2025-03-17 19:48:19,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 33 transitions, 165 flow [2025-03-17 19:48:19,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 155 flow, removed 2 selfloop flow, removed 4 redundant places. [2025-03-17 19:48:19,464 INFO L231 Difference]: Finished difference. Result has 33 places, 21 transitions, 77 flow [2025-03-17 19:48:19,464 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=77, PETRI_PLACES=33, PETRI_TRANSITIONS=21} [2025-03-17 19:48:19,464 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 5 predicate places. [2025-03-17 19:48:19,464 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 21 transitions, 77 flow [2025-03-17 19:48:19,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 6 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:19,464 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:19,464 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:19,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-17 19:48:19,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:48:19,665 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-03-17 19:48:19,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:19,666 INFO L85 PathProgramCache]: Analyzing trace with hash -131353497, now seen corresponding path program 1 times [2025-03-17 19:48:19,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:19,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979312269] [2025-03-17 19:48:19,666 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:19,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:19,671 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:48:19,680 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:48:19,680 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:19,680 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:19,737 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:19,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:19,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979312269] [2025-03-17 19:48:19,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979312269] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:48:19,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858471980] [2025-03-17 19:48:19,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:48:19,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:48:19,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:48:19,739 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:48:19,741 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-17 19:48:19,780 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:48:19,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:48:19,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:48:19,793 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:19,794 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjuncts are in the unsatisfiable core [2025-03-17 19:48:19,795 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:48:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:19,836 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:48:19,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:48:19,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1858471980] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:48:19,875 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:48:19,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2025-03-17 19:48:19,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592187266] [2025-03-17 19:48:19,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:48:19,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-17 19:48:19,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:19,877 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-17 19:48:19,877 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2025-03-17 19:48:19,890 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2025-03-17 19:48:19,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 21 transitions, 77 flow. Second operand has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:19,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:19,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2025-03-17 19:48:19,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:20,022 INFO L124 PetriNetUnfolderBase]: 79/189 cut-off events. [2025-03-17 19:48:20,022 INFO L125 PetriNetUnfolderBase]: For 136/136 co-relation queries the response was YES. [2025-03-17 19:48:20,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503 conditions, 189 events. 79/189 cut-off events. For 136/136 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 476 event pairs, 30 based on Foata normal form. 15/198 useless extension candidates. Maximal degree in co-relation 493. Up to 81 conditions per place. [2025-03-17 19:48:20,024 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 39 selfloop transitions, 9 changer transitions 0/51 dead transitions. [2025-03-17 19:48:20,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 51 transitions, 265 flow [2025-03-17 19:48:20,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-17 19:48:20,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2025-03-17 19:48:20,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2025-03-17 19:48:20,025 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.44814814814814813 [2025-03-17 19:48:20,025 INFO L175 Difference]: Start difference. First operand has 33 places, 21 transitions, 77 flow. Second operand 10 states and 121 transitions. [2025-03-17 19:48:20,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 51 transitions, 265 flow [2025-03-17 19:48:20,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 51 transitions, 239 flow, removed 4 selfloop flow, removed 5 redundant places. [2025-03-17 19:48:20,026 INFO L231 Difference]: Finished difference. Result has 40 places, 27 transitions, 121 flow [2025-03-17 19:48:20,026 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=121, PETRI_PLACES=40, PETRI_TRANSITIONS=27} [2025-03-17 19:48:20,027 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 12 predicate places. [2025-03-17 19:48:20,027 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 27 transitions, 121 flow [2025-03-17 19:48:20,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.666666666666666) internal successors, (104), 12 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:48:20,027 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:48:20,027 INFO L206 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:48:20,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-17 19:48:20,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-03-17 19:48:20,228 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2025-03-17 19:48:20,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:48:20,229 INFO L85 PathProgramCache]: Analyzing trace with hash -547874059, now seen corresponding path program 2 times [2025-03-17 19:48:20,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:48:20,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390693067] [2025-03-17 19:48:20,229 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:48:20,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:48:20,235 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-17 19:48:20,239 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 11 of 23 statements. [2025-03-17 19:48:20,239 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:48:20,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:20,306 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:48:20,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:48:20,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390693067] [2025-03-17 19:48:20,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390693067] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-17 19:48:20,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207073168] [2025-03-17 19:48:20,307 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-17 19:48:20,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:48:20,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:48:20,309 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-17 19:48:20,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-17 19:48:20,344 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 23 statements into 2 equivalence classes. [2025-03-17 19:48:20,351 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 11 of 23 statements. [2025-03-17 19:48:20,352 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-17 19:48:20,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:48:20,353 INFO L256 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-17 19:48:20,354 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-17 19:48:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:48:20,397 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-17 19:48:20,469 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-03-17 19:48:20,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207073168] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-17 19:48:20,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-17 19:48:20,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2025-03-17 19:48:20,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632604684] [2025-03-17 19:48:20,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-17 19:48:20,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-17 19:48:20,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:48:20,471 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-17 19:48:20,471 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-03-17 19:48:20,496 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2025-03-17 19:48:20,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 27 transitions, 121 flow. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 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) [2025-03-17 19:48:20,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:48:20,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2025-03-17 19:48:20,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:48:20,620 INFO L124 PetriNetUnfolderBase]: 134/325 cut-off events. [2025-03-17 19:48:20,620 INFO L125 PetriNetUnfolderBase]: For 414/414 co-relation queries the response was YES. [2025-03-17 19:48:20,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885 conditions, 325 events. 134/325 cut-off events. For 414/414 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1158 event pairs, 18 based on Foata normal form. 10/330 useless extension candidates. Maximal degree in co-relation 873. Up to 55 conditions per place. [2025-03-17 19:48:20,622 INFO L140 encePairwiseOnDemand]: 21/27 looper letters, 0 selfloop transitions, 0 changer transitions 54/54 dead transitions. [2025-03-17 19:48:20,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 54 transitions, 328 flow [2025-03-17 19:48:20,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-17 19:48:20,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2025-03-17 19:48:20,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 70 transitions. [2025-03-17 19:48:20,625 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.32407407407407407 [2025-03-17 19:48:20,625 INFO L175 Difference]: Start difference. First operand has 40 places, 27 transitions, 121 flow. Second operand 8 states and 70 transitions. [2025-03-17 19:48:20,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 54 transitions, 328 flow [2025-03-17 19:48:20,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 54 transitions, 288 flow, removed 8 selfloop flow, removed 6 redundant places. [2025-03-17 19:48:20,627 INFO L231 Difference]: Finished difference. Result has 40 places, 0 transitions, 0 flow [2025-03-17 19:48:20,627 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=91, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=40, PETRI_TRANSITIONS=0} [2025-03-17 19:48:20,628 INFO L279 CegarLoopForPetriNet]: 28 programPoint places, 12 predicate places. [2025-03-17 19:48:20,628 INFO L471 AbstractCegarLoop]: Abstraction has has 40 places, 0 transitions, 0 flow [2025-03-17 19:48:20,628 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 11 states have internal predecessors, (75), 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) [2025-03-17 19:48:20,631 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 10 remaining) [2025-03-17 19:48:20,632 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 10 remaining) [2025-03-17 19:48:20,632 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 10 remaining) [2025-03-17 19:48:20,632 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 10 remaining) [2025-03-17 19:48:20,632 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 10 remaining) [2025-03-17 19:48:20,632 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 10 remaining) [2025-03-17 19:48:20,632 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 10 remaining) [2025-03-17 19:48:20,633 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 10 remaining) [2025-03-17 19:48:20,633 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 10 remaining) [2025-03-17 19:48:20,633 INFO L782 garLoopResultBuilder]: Registering result SAFE for location f2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 10 remaining) [2025-03-17 19:48:20,639 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-17 19:48:20,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-17 19:48:20,834 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2025-03-17 19:48:20,837 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 19:48:20,838 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 19:48:20,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 07:48:20 BasicIcfg [2025-03-17 19:48:20,841 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 19:48:20,842 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 19:48:20,842 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 19:48:20,842 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 19:48:20,842 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:48:18" (3/4) ... [2025-03-17 19:48:20,843 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-17 19:48:20,845 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure f1 [2025-03-17 19:48:20,846 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure f2 [2025-03-17 19:48:20,848 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 30 nodes and edges [2025-03-17 19:48:20,848 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2025-03-17 19:48:20,848 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2025-03-17 19:48:20,848 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-17 19:48:20,894 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 19:48:20,894 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 19:48:20,894 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 19:48:20,895 INFO L158 Benchmark]: Toolchain (without parser) took 3422.74ms. Allocated memory is still 167.8MB. Free memory was 121.1MB in the beginning and 62.5MB in the end (delta: 58.5MB). Peak memory consumption was 60.0MB. Max. memory is 16.1GB. [2025-03-17 19:48:20,895 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 201.3MB. Free memory is still 119.4MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:48:20,895 INFO L158 Benchmark]: CACSL2BoogieTranslator took 348.56ms. Allocated memory is still 167.8MB. Free memory was 121.1MB in the beginning and 101.1MB in the end (delta: 19.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 19:48:20,895 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.18ms. Allocated memory is still 167.8MB. Free memory was 101.1MB in the beginning and 99.5MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:48:20,895 INFO L158 Benchmark]: Boogie Preprocessor took 32.36ms. Allocated memory is still 167.8MB. Free memory was 99.5MB in the beginning and 98.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:48:20,895 INFO L158 Benchmark]: IcfgBuilder took 318.15ms. Allocated memory is still 167.8MB. Free memory was 98.1MB in the beginning and 77.3MB in the end (delta: 20.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 19:48:20,895 INFO L158 Benchmark]: TraceAbstraction took 2627.58ms. Allocated memory is still 167.8MB. Free memory was 76.9MB in the beginning and 67.9MB in the end (delta: 9.0MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. [2025-03-17 19:48:20,896 INFO L158 Benchmark]: Witness Printer took 52.53ms. Allocated memory is still 167.8MB. Free memory was 67.9MB in the beginning and 62.5MB in the end (delta: 5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:48:20,896 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 201.3MB. Free memory is still 119.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 348.56ms. Allocated memory is still 167.8MB. Free memory was 121.1MB in the beginning and 101.1MB in the end (delta: 19.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.18ms. Allocated memory is still 167.8MB. Free memory was 101.1MB in the beginning and 99.5MB in the end (delta: 1.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.36ms. Allocated memory is still 167.8MB. Free memory was 99.5MB in the beginning and 98.1MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 318.15ms. Allocated memory is still 167.8MB. Free memory was 98.1MB in the beginning and 77.3MB in the end (delta: 20.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 2627.58ms. Allocated memory is still 167.8MB. Free memory was 76.9MB in the beginning and 67.9MB in the end (delta: 9.0MB). Peak memory consumption was 9.7MB. Max. memory is 16.1GB. * Witness Printer took 52.53ms. Allocated memory is still 167.8MB. Free memory was 67.9MB in the beginning and 62.5MB in the end (delta: 5.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 760]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 760]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 767]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 45 locations, 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: 2.5s, OverallIterations: 7, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 246 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 222 mSDsluCounter, 85 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 71 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 576 IncrementalHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 14 mSDtfsCounter, 576 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 118 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121occurred in iteration=6, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 128 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 153 ConstructedInterpolants, 0 QuantifiedInterpolants, 409 SizeOfPredicates, 9 NumberOfNonLiveVariables, 235 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 70/105 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! [2025-03-17 19:48:20,906 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