./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/goblint-regression/04-mutex_04-munge_nr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/04-mutex_04-munge_nr.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 09d5acb2f81ee0994352651dad5f891cf0af6948836360f3240d2ea1a246e8a6 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 15:19:32,248 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 15:19:32,301 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 15:19:32,304 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 15:19:32,304 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 15:19:32,321 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 15:19:32,322 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 15:19:32,322 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 15:19:32,323 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 15:19:32,323 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 15:19:32,323 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 15:19:32,324 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 15:19:32,324 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 15:19:32,324 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 15:19:32,324 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 15:19:32,324 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 15:19:32,325 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 15:19:32,325 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 15:19:32,325 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 15:19:32,325 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 15:19:32,325 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 15:19:32,325 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 15:19:32,325 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 15:19:32,325 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 15:19:32,325 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 15:19:32,325 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 15:19:32,325 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 15:19:32,325 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 15:19:32,326 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 15:19:32,326 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 15:19:32,326 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 15:19:32,326 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 15:19:32,326 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 15:19:32,326 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 15:19:32,326 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:19:32,327 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 15:19:32,327 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 15:19:32,327 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 15:19:32,327 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 15:19:32,327 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 15:19:32,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 15:19:32,327 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 15:19:32,327 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 15:19:32,327 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 15:19:32,327 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 15:19:32,327 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 -> 09d5acb2f81ee0994352651dad5f891cf0af6948836360f3240d2ea1a246e8a6 [2025-03-04 15:19:32,516 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 15:19:32,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 15:19:32,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 15:19:32,523 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 15:19:32,524 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 15:19:32,524 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/04-mutex_04-munge_nr.i [2025-03-04 15:19:33,648 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d15ac87e6/f4b0b93329ae428d926d618cabc7f84e/FLAGb55e5ee1d [2025-03-04 15:19:33,927 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 15:19:33,929 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/04-mutex_04-munge_nr.i [2025-03-04 15:19:33,942 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d15ac87e6/f4b0b93329ae428d926d618cabc7f84e/FLAGb55e5ee1d [2025-03-04 15:19:34,206 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d15ac87e6/f4b0b93329ae428d926d618cabc7f84e [2025-03-04 15:19:34,208 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 15:19:34,209 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 15:19:34,210 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 15:19:34,210 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 15:19:34,212 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 15:19:34,213 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:19:34" (1/1) ... [2025-03-04 15:19:34,213 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c178e11 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:34, skipping insertion in model container [2025-03-04 15:19:34,213 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 03:19:34" (1/1) ... [2025-03-04 15:19:34,232 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 15:19:34,485 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:19:34,495 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 15:19:34,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 15:19:34,569 INFO L204 MainTranslator]: Completed translation [2025-03-04 15:19:34,569 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:34 WrapperNode [2025-03-04 15:19:34,570 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 15:19:34,571 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 15:19:34,572 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 15:19:34,572 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 15:19:34,576 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:34" (1/1) ... [2025-03-04 15:19:34,585 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:34" (1/1) ... [2025-03-04 15:19:34,596 INFO L138 Inliner]: procedures = 263, calls = 13, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 47 [2025-03-04 15:19:34,597 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 15:19:34,597 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 15:19:34,597 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 15:19:34,597 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 15:19:34,601 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:34" (1/1) ... [2025-03-04 15:19:34,601 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:34" (1/1) ... [2025-03-04 15:19:34,603 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:34" (1/1) ... [2025-03-04 15:19:34,611 INFO L175 MemorySlicer]: Split 5 memory accesses to 1 slices as follows [5]. 100 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [5]. The 0 writes are split as follows [0]. [2025-03-04 15:19:34,611 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:34" (1/1) ... [2025-03-04 15:19:34,611 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:34" (1/1) ... [2025-03-04 15:19:34,614 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:34" (1/1) ... [2025-03-04 15:19:34,614 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:34" (1/1) ... [2025-03-04 15:19:34,616 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:34" (1/1) ... [2025-03-04 15:19:34,616 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:34" (1/1) ... [2025-03-04 15:19:34,617 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 15:19:34,618 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 15:19:34,618 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 15:19:34,618 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 15:19:34,619 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:34" (1/1) ... [2025-03-04 15:19:34,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 15:19:34,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 15:19:34,639 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-04 15:19:34,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-04 15:19:34,655 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2025-03-04 15:19:34,656 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2025-03-04 15:19:34,656 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 15:19:34,656 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2025-03-04 15:19:34,656 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2025-03-04 15:19:34,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 15:19:34,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 15:19:34,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 15:19:34,657 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-04 15:19:34,740 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 15:19:34,741 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 15:19:34,815 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-04 15:19:34,816 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 15:19:34,865 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 15:19:34,866 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 15:19:34,866 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:19:34 BoogieIcfgContainer [2025-03-04 15:19:34,866 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 15:19:34,868 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 15:19:34,869 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 15:19:34,872 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 15:19:34,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 03:19:34" (1/3) ... [2025-03-04 15:19:34,872 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129dc30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:19:34, skipping insertion in model container [2025-03-04 15:19:34,872 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 03:19:34" (2/3) ... [2025-03-04 15:19:34,873 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129dc30b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 03:19:34, skipping insertion in model container [2025-03-04 15:19:34,873 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:19:34" (3/3) ... [2025-03-04 15:19:34,874 INFO L128 eAbstractionObserver]: Analyzing ICFG 04-mutex_04-munge_nr.i [2025-03-04 15:19:34,884 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 15:19:34,885 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 04-mutex_04-munge_nr.i that has 2 procedures, 24 locations, 1 initial locations, 0 loop locations, and 4 error locations. [2025-03-04 15:19:34,886 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-04 15:19:34,913 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2025-03-04 15:19:34,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 27 places, 23 transitions, 53 flow [2025-03-04 15:19:34,956 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2025-03-04 15:19:34,957 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-04 15:19:34,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27 conditions, 22 events. 0/22 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 31 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-03-04 15:19:34,958 INFO L82 GeneralOperation]: Start removeDead. Operand has 27 places, 23 transitions, 53 flow [2025-03-04 15:19:34,960 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 20 transitions, 43 flow [2025-03-04 15:19:34,965 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 15:19:34,972 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;@2c291637, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 15:19:34,972 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2025-03-04 15:19:34,976 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-04 15:19:34,976 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2025-03-04 15:19:34,976 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:19:34,976 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:19:34,977 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-04 15:19:34,977 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-04 15:19:34,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:19:34,982 INFO L85 PathProgramCache]: Analyzing trace with hash -270969788, now seen corresponding path program 1 times [2025-03-04 15:19:34,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:19:34,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147310472] [2025-03-04 15:19:34,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:19:34,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:19:35,044 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-04 15:19:35,057 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-04 15:19:35,057 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:19:35,057 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:19:35,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:19:35,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:19:35,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147310472] [2025-03-04 15:19:35,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147310472] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:19:35,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:19:35,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-04 15:19:35,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979848658] [2025-03-04 15:19:35,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:19:35,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 15:19:35,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:19:35,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 15:19:35,185 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 15:19:35,202 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2025-03-04 15:19:35,204 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 20 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:19:35,204 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:19:35,204 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2025-03-04 15:19:35,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:19:35,257 INFO L124 PetriNetUnfolderBase]: 33/92 cut-off events. [2025-03-04 15:19:35,260 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-04 15:19:35,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 92 events. 33/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 292 event pairs, 18 based on Foata normal form. 5/90 useless extension candidates. Maximal degree in co-relation 170. Up to 69 conditions per place. [2025-03-04 15:19:35,262 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 17 selfloop transitions, 3 changer transitions 2/26 dead transitions. [2025-03-04 15:19:35,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 99 flow [2025-03-04 15:19:35,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 15:19:35,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-04 15:19:35,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2025-03-04 15:19:35,273 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5942028985507246 [2025-03-04 15:19:35,274 INFO L175 Difference]: Start difference. First operand has 24 places, 20 transitions, 43 flow. Second operand 3 states and 41 transitions. [2025-03-04 15:19:35,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 99 flow [2025-03-04 15:19:35,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 26 transitions, 98 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:19:35,280 INFO L231 Difference]: Finished difference. Result has 26 places, 20 transitions, 59 flow [2025-03-04 15:19:35,281 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=26, PETRI_TRANSITIONS=20} [2025-03-04 15:19:35,284 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 2 predicate places. [2025-03-04 15:19:35,285 INFO L471 AbstractCegarLoop]: Abstraction has has 26 places, 20 transitions, 59 flow [2025-03-04 15:19:35,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:19:35,285 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:19:35,285 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:19:35,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-04 15:19:35,286 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-04 15:19:35,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:19:35,286 INFO L85 PathProgramCache]: Analyzing trace with hash 363457795, now seen corresponding path program 1 times [2025-03-04 15:19:35,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:19:35,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054880723] [2025-03-04 15:19:35,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:19:35,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:19:35,302 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:19:35,307 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:19:35,307 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:19:35,308 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:19:35,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:19:35,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:19:35,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054880723] [2025-03-04 15:19:35,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054880723] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:19:35,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:19:35,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 15:19:35,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208803151] [2025-03-04 15:19:35,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:19:35,453 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:19:35,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:19:35,453 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:19:35,453 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:19:35,453 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 23 [2025-03-04 15:19:35,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 20 transitions, 59 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:19:35,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:19:35,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 23 [2025-03-04 15:19:35,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:19:35,552 INFO L124 PetriNetUnfolderBase]: 21/119 cut-off events. [2025-03-04 15:19:35,553 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2025-03-04 15:19:35,553 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 119 events. 21/119 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 598 event pairs, 1 based on Foata normal form. 4/123 useless extension candidates. Maximal degree in co-relation 224. Up to 32 conditions per place. [2025-03-04 15:19:35,554 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 16 selfloop transitions, 18 changer transitions 0/42 dead transitions. [2025-03-04 15:19:35,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 42 transitions, 186 flow [2025-03-04 15:19:35,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 15:19:35,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 15:19:35,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2025-03-04 15:19:35,555 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6149068322981367 [2025-03-04 15:19:35,555 INFO L175 Difference]: Start difference. First operand has 26 places, 20 transitions, 59 flow. Second operand 7 states and 99 transitions. [2025-03-04 15:19:35,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 42 transitions, 186 flow [2025-03-04 15:19:35,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 42 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-04 15:19:35,556 INFO L231 Difference]: Finished difference. Result has 35 places, 34 transitions, 160 flow [2025-03-04 15:19:35,556 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=160, PETRI_PLACES=35, PETRI_TRANSITIONS=34} [2025-03-04 15:19:35,557 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 11 predicate places. [2025-03-04 15:19:35,557 INFO L471 AbstractCegarLoop]: Abstraction has has 35 places, 34 transitions, 160 flow [2025-03-04 15:19:35,557 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:19:35,557 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:19:35,557 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:19:35,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 15:19:35,557 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-04 15:19:35,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:19:35,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1843969563, now seen corresponding path program 2 times [2025-03-04 15:19:35,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:19:35,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101444344] [2025-03-04 15:19:35,558 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-04 15:19:35,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:19:35,564 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:19:35,567 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:19:35,567 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2025-03-04 15:19:35,567 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:19:35,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:19:35,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:19:35,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101444344] [2025-03-04 15:19:35,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101444344] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:19:35,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:19:35,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 15:19:35,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730937492] [2025-03-04 15:19:35,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:19:35,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:19:35,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:19:35,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:19:35,676 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:19:35,676 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 23 [2025-03-04 15:19:35,677 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 34 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:19:35,677 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:19:35,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 23 [2025-03-04 15:19:35,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:19:35,781 INFO L124 PetriNetUnfolderBase]: 16/100 cut-off events. [2025-03-04 15:19:35,781 INFO L125 PetriNetUnfolderBase]: For 63/63 co-relation queries the response was YES. [2025-03-04 15:19:35,781 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 100 events. 16/100 cut-off events. For 63/63 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 441 event pairs, 0 based on Foata normal form. 4/104 useless extension candidates. Maximal degree in co-relation 262. Up to 26 conditions per place. [2025-03-04 15:19:35,782 INFO L140 encePairwiseOnDemand]: 15/23 looper letters, 17 selfloop transitions, 20 changer transitions 0/45 dead transitions. [2025-03-04 15:19:35,782 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 45 transitions, 290 flow [2025-03-04 15:19:35,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-04 15:19:35,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-04 15:19:35,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 87 transitions. [2025-03-04 15:19:35,783 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6304347826086957 [2025-03-04 15:19:35,783 INFO L175 Difference]: Start difference. First operand has 35 places, 34 transitions, 160 flow. Second operand 6 states and 87 transitions. [2025-03-04 15:19:35,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 45 transitions, 290 flow [2025-03-04 15:19:35,784 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 45 transitions, 284 flow, removed 3 selfloop flow, removed 0 redundant places. [2025-03-04 15:19:35,785 INFO L231 Difference]: Finished difference. Result has 44 places, 40 transitions, 275 flow [2025-03-04 15:19:35,785 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=275, PETRI_PLACES=44, PETRI_TRANSITIONS=40} [2025-03-04 15:19:35,786 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 20 predicate places. [2025-03-04 15:19:35,786 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 40 transitions, 275 flow [2025-03-04 15:19:35,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:19:35,786 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:19:35,786 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:19:35,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 15:19:35,786 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-04 15:19:35,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:19:35,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1145883511, now seen corresponding path program 3 times [2025-03-04 15:19:35,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:19:35,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65194079] [2025-03-04 15:19:35,787 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-04 15:19:35,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:19:35,792 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 11 statements into 1 equivalence classes. [2025-03-04 15:19:35,795 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-04 15:19:35,795 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2025-03-04 15:19:35,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:19:35,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:19:35,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:19:35,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65194079] [2025-03-04 15:19:35,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65194079] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:19:35,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:19:35,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-04 15:19:35,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579555715] [2025-03-04 15:19:35,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:19:35,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-04 15:19:35,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:19:35,895 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-04 15:19:35,895 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-04 15:19:35,895 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 23 [2025-03-04 15:19:35,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 40 transitions, 275 flow. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:19:35,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:19:35,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 23 [2025-03-04 15:19:35,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:19:35,979 INFO L124 PetriNetUnfolderBase]: 14/84 cut-off events. [2025-03-04 15:19:35,979 INFO L125 PetriNetUnfolderBase]: For 140/140 co-relation queries the response was YES. [2025-03-04 15:19:35,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299 conditions, 84 events. 14/84 cut-off events. For 140/140 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 321 event pairs, 0 based on Foata normal form. 2/86 useless extension candidates. Maximal degree in co-relation 279. Up to 20 conditions per place. [2025-03-04 15:19:35,982 INFO L140 encePairwiseOnDemand]: 16/23 looper letters, 13 selfloop transitions, 22 changer transitions 0/43 dead transitions. [2025-03-04 15:19:35,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 358 flow [2025-03-04 15:19:35,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-04 15:19:35,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-04 15:19:35,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 87 transitions. [2025-03-04 15:19:35,984 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5403726708074534 [2025-03-04 15:19:35,985 INFO L175 Difference]: Start difference. First operand has 44 places, 40 transitions, 275 flow. Second operand 7 states and 87 transitions. [2025-03-04 15:19:35,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 358 flow [2025-03-04 15:19:35,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 43 transitions, 324 flow, removed 8 selfloop flow, removed 3 redundant places. [2025-03-04 15:19:35,990 INFO L231 Difference]: Finished difference. Result has 48 places, 41 transitions, 299 flow [2025-03-04 15:19:35,991 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=299, PETRI_PLACES=48, PETRI_TRANSITIONS=41} [2025-03-04 15:19:35,991 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 24 predicate places. [2025-03-04 15:19:35,991 INFO L471 AbstractCegarLoop]: Abstraction has has 48 places, 41 transitions, 299 flow [2025-03-04 15:19:35,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-04 15:19:35,991 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:19:35,991 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:19:35,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-04 15:19:35,992 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-04 15:19:35,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:19:35,993 INFO L85 PathProgramCache]: Analyzing trace with hash -709488876, now seen corresponding path program 1 times [2025-03-04 15:19:35,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:19:35,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452183796] [2025-03-04 15:19:35,993 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:19:35,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:19:35,999 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-04 15:19:36,003 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-04 15:19:36,003 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:19:36,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:19:36,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:19:36,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:19:36,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452183796] [2025-03-04 15:19:36,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452183796] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:19:36,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:19:36,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:19:36,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497165139] [2025-03-04 15:19:36,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:19:36,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:19:36,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:19:36,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:19:36,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:19:36,050 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2025-03-04 15:19:36,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 41 transitions, 299 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) [2025-03-04 15:19:36,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:19:36,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2025-03-04 15:19:36,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:19:36,082 INFO L124 PetriNetUnfolderBase]: 18/80 cut-off events. [2025-03-04 15:19:36,082 INFO L125 PetriNetUnfolderBase]: For 172/172 co-relation queries the response was YES. [2025-03-04 15:19:36,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 327 conditions, 80 events. 18/80 cut-off events. For 172/172 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 261 event pairs, 1 based on Foata normal form. 6/83 useless extension candidates. Maximal degree in co-relation 308. Up to 46 conditions per place. [2025-03-04 15:19:36,083 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 44 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2025-03-04 15:19:36,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 51 transitions, 503 flow [2025-03-04 15:19:36,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:19:36,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:19:36,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 40 transitions. [2025-03-04 15:19:36,084 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2025-03-04 15:19:36,084 INFO L175 Difference]: Start difference. First operand has 48 places, 41 transitions, 299 flow. Second operand 4 states and 40 transitions. [2025-03-04 15:19:36,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 51 transitions, 503 flow [2025-03-04 15:19:36,086 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 51 transitions, 474 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-03-04 15:19:36,087 INFO L231 Difference]: Finished difference. Result has 47 places, 39 transitions, 277 flow [2025-03-04 15:19:36,087 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=277, PETRI_PLACES=47, PETRI_TRANSITIONS=39} [2025-03-04 15:19:36,088 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 23 predicate places. [2025-03-04 15:19:36,089 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 39 transitions, 277 flow [2025-03-04 15:19:36,089 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) [2025-03-04 15:19:36,089 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-04 15:19:36,089 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 15:19:36,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-04 15:19:36,090 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2025-03-04 15:19:36,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 15:19:36,091 INFO L85 PathProgramCache]: Analyzing trace with hash -1038834255, now seen corresponding path program 1 times [2025-03-04 15:19:36,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 15:19:36,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971660819] [2025-03-04 15:19:36,092 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 15:19:36,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 15:19:36,096 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-04 15:19:36,098 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-04 15:19:36,098 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 15:19:36,099 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 15:19:36,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 15:19:36,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 15:19:36,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971660819] [2025-03-04 15:19:36,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971660819] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 15:19:36,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 15:19:36,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-04 15:19:36,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484698883] [2025-03-04 15:19:36,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 15:19:36,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 15:19:36,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 15:19:36,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 15:19:36,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 15:19:36,137 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 23 [2025-03-04 15:19:36,138 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 277 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) [2025-03-04 15:19:36,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-04 15:19:36,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 23 [2025-03-04 15:19:36,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-04 15:19:36,168 INFO L124 PetriNetUnfolderBase]: 14/70 cut-off events. [2025-03-04 15:19:36,168 INFO L125 PetriNetUnfolderBase]: For 128/128 co-relation queries the response was YES. [2025-03-04 15:19:36,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 70 events. 14/70 cut-off events. For 128/128 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 230 event pairs, 0 based on Foata normal form. 5/73 useless extension candidates. Maximal degree in co-relation 264. Up to 36 conditions per place. [2025-03-04 15:19:36,169 INFO L140 encePairwiseOnDemand]: 18/23 looper letters, 0 selfloop transitions, 0 changer transitions 49/49 dead transitions. [2025-03-04 15:19:36,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 49 transitions, 468 flow [2025-03-04 15:19:36,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 15:19:36,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-04 15:19:36,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 38 transitions. [2025-03-04 15:19:36,169 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41304347826086957 [2025-03-04 15:19:36,169 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 277 flow. Second operand 4 states and 38 transitions. [2025-03-04 15:19:36,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 49 transitions, 468 flow [2025-03-04 15:19:36,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 461 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-04 15:19:36,172 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2025-03-04 15:19:36,172 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=23, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2025-03-04 15:19:36,172 INFO L279 CegarLoopForPetriNet]: 24 programPoint places, 21 predicate places. [2025-03-04 15:19:36,172 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2025-03-04 15:19:36,172 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) [2025-03-04 15:19:36,174 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 7 remaining) [2025-03-04 15:19:36,174 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 7 remaining) [2025-03-04 15:19:36,174 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2025-03-04 15:19:36,174 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 7 remaining) [2025-03-04 15:19:36,174 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 7 remaining) [2025-03-04 15:19:36,175 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 7 remaining) [2025-03-04 15:19:36,175 INFO L782 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 7 remaining) [2025-03-04 15:19:36,175 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 15:19:36,175 INFO L422 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1] [2025-03-04 15:19:36,178 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-04 15:19:36,178 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-04 15:19:36,181 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.03 03:19:36 BasicIcfg [2025-03-04 15:19:36,181 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-04 15:19:36,182 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-04 15:19:36,182 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-04 15:19:36,182 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-04 15:19:36,182 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 03:19:34" (3/4) ... [2025-03-04 15:19:36,183 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-04 15:19:36,185 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure t_fun [2025-03-04 15:19:36,188 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2025-03-04 15:19:36,188 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2025-03-04 15:19:36,188 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-04 15:19:36,189 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-04 15:19:36,232 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-04 15:19:36,232 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-04 15:19:36,232 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-04 15:19:36,233 INFO L158 Benchmark]: Toolchain (without parser) took 2023.72ms. Allocated memory is still 142.6MB. Free memory was 104.3MB in the beginning and 51.8MB in the end (delta: 52.5MB). Peak memory consumption was 52.4MB. Max. memory is 16.1GB. [2025-03-04 15:19:36,233 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 201.3MB. Free memory is still 125.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:19:36,233 INFO L158 Benchmark]: CACSL2BoogieTranslator took 361.06ms. Allocated memory is still 142.6MB. Free memory was 104.3MB in the beginning and 77.0MB in the end (delta: 27.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2025-03-04 15:19:36,233 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.63ms. Allocated memory is still 142.6MB. Free memory was 77.0MB in the beginning and 74.8MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-04 15:19:36,233 INFO L158 Benchmark]: Boogie Preprocessor took 20.12ms. Allocated memory is still 142.6MB. Free memory was 74.8MB in the beginning and 73.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:19:36,233 INFO L158 Benchmark]: IcfgBuilder took 248.67ms. Allocated memory is still 142.6MB. Free memory was 73.7MB in the beginning and 56.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-04 15:19:36,234 INFO L158 Benchmark]: TraceAbstraction took 1312.75ms. Allocated memory is still 142.6MB. Free memory was 55.8MB in the beginning and 57.3MB in the end (delta: -1.5MB). Peak memory consumption was 2.0MB. Max. memory is 16.1GB. [2025-03-04 15:19:36,234 INFO L158 Benchmark]: Witness Printer took 50.38ms. Allocated memory is still 142.6MB. Free memory was 57.3MB in the beginning and 51.8MB in the end (delta: 5.5MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-04 15:19:36,235 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 201.3MB. Free memory is still 125.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 361.06ms. Allocated memory is still 142.6MB. Free memory was 104.3MB in the beginning and 77.0MB in the end (delta: 27.3MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.63ms. Allocated memory is still 142.6MB. Free memory was 77.0MB in the beginning and 74.8MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 20.12ms. Allocated memory is still 142.6MB. Free memory was 74.8MB in the beginning and 73.7MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 248.67ms. Allocated memory is still 142.6MB. Free memory was 73.7MB in the beginning and 56.9MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 1312.75ms. Allocated memory is still 142.6MB. Free memory was 55.8MB in the beginning and 57.3MB in the end (delta: -1.5MB). Peak memory consumption was 2.0MB. Max. memory is 16.1GB. * Witness Printer took 50.38ms. Allocated memory is still 142.6MB. Free memory was 57.3MB in the beginning and 51.8MB in the end (delta: 5.5MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 921]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 921]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 921]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 921]: 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 3 procedures, 35 locations, 7 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: 1.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 109 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 91 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 328 IncrementalHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 0 mSDtfsCounter, 328 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=299occurred in iteration=4, InterpolantAutomatonStates: 31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 64 NumberOfCodeBlocks, 64 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 186 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-04 15:19:36,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE