./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/pthread-atomic/read_write_lock-2.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-atomic/read_write_lock-2.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 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:25:25,464 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:25:25,517 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:25:25,523 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:25:25,523 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:25:25,547 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:25:25,549 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:25:25,549 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:25:25,549 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:25:25,549 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:25:25,550 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:25:25,550 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:25:25,550 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:25:25,550 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:25:25,550 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:25:25,551 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:25:25,551 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:25:25,551 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:25:25,551 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:25:25,551 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:25:25,551 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:25:25,551 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:25:25,551 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:25:25,551 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:25:25,551 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:25:25,552 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:25:25,552 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:25:25,552 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:25:25,552 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:25:25,552 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:25:25,552 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:25:25,552 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:25:25,552 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:25:25,553 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:25:25,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:25:25,553 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:25:25,553 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:25:25,553 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:25:25,553 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:25:25,553 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:25:25,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:25:25,553 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:25:25,553 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:25:25,553 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:25:25,553 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:25:25,553 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 -> 3e2f466b16db44ce2fec1aabf9e70b4ab734ef2801c32e66d10c5bcbcceb5301 [2025-03-17 19:25:25,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:25:25,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:25:25,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:25:25,792 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:25:25,793 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:25:25,794 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2025-03-17 19:25:26,925 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48bad67d7/c42207ba697940d4bf5fc963c7a70a8d/FLAGf8ea17ea7 [2025-03-17 19:25:27,265 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:25:27,267 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-atomic/read_write_lock-2.i [2025-03-17 19:25:27,281 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48bad67d7/c42207ba697940d4bf5fc963c7a70a8d/FLAGf8ea17ea7 [2025-03-17 19:25:27,490 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48bad67d7/c42207ba697940d4bf5fc963c7a70a8d [2025-03-17 19:25:27,492 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:25:27,493 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:25:27,494 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:25:27,494 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:25:27,497 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:25:27,497 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:25:27" (1/1) ... [2025-03-17 19:25:27,498 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2589dfc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:25:27, skipping insertion in model container [2025-03-17 19:25:27,498 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:25:27" (1/1) ... [2025-03-17 19:25:27,522 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:25:27,711 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:25:27,718 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:25:27,749 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:25:27,776 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:25:27,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:25:27 WrapperNode [2025-03-17 19:25:27,777 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:25:27,778 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:25:27,778 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:25:27,778 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:25:27,782 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:25:27" (1/1) ... [2025-03-17 19:25:27,793 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:25:27" (1/1) ... [2025-03-17 19:25:27,808 INFO L138 Inliner]: procedures = 172, calls = 31, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 100 [2025-03-17 19:25:27,808 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:25:27,810 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:25:27,811 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:25:27,811 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:25:27,815 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:25:27" (1/1) ... [2025-03-17 19:25:27,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:25:27" (1/1) ... [2025-03-17 19:25:27,817 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:25:27" (1/1) ... [2025-03-17 19:25:27,825 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 19:25:27,825 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:25:27" (1/1) ... [2025-03-17 19:25:27,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:25:27" (1/1) ... [2025-03-17 19:25:27,829 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:25:27" (1/1) ... [2025-03-17 19:25:27,829 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:25:27" (1/1) ... [2025-03-17 19:25:27,830 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:25:27" (1/1) ... [2025-03-17 19:25:27,830 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:25:27" (1/1) ... [2025-03-17 19:25:27,831 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:25:27,832 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:25:27,832 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:25:27,832 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:25:27,833 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:25:27" (1/1) ... [2025-03-17 19:25:27,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:25:27,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:25:27,856 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 19:25:27,861 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 19:25:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2025-03-17 19:25:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:25:27,872 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2025-03-17 19:25:27,873 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2025-03-17 19:25:27,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:25:27,873 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2025-03-17 19:25:27,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:25:27,873 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:25:27,873 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2025-03-17 19:25:27,873 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2025-03-17 19:25:27,873 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 19:25:27,949 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:25:27,951 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:25:28,072 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:25:28,072 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:25:28,157 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:25:28,157 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:25:28,157 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:25:28 BoogieIcfgContainer [2025-03-17 19:25:28,157 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:25:28,160 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:25:28,160 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:25:28,163 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:25:28,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:25:27" (1/3) ... [2025-03-17 19:25:28,164 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1fc788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:25:28, skipping insertion in model container [2025-03-17 19:25:28,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:25:27" (2/3) ... [2025-03-17 19:25:28,165 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d1fc788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:25:28, skipping insertion in model container [2025-03-17 19:25:28,165 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:25:28" (3/3) ... [2025-03-17 19:25:28,166 INFO L128 eAbstractionObserver]: Analyzing ICFG read_write_lock-2.i [2025-03-17 19:25:28,176 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:25:28,177 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG read_write_lock-2.i that has 3 procedures, 36 locations, 1 initial locations, 0 loop locations, and 4 error locations. [2025-03-17 19:25:28,177 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:25:28,229 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2025-03-17 19:25:28,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 69 places, 56 transitions, 140 flow [2025-03-17 19:25:28,282 INFO L124 PetriNetUnfolderBase]: 0/52 cut-off events. [2025-03-17 19:25:28,284 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2025-03-17 19:25:28,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69 conditions, 52 events. 0/52 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 130 event pairs, 0 based on Foata normal form. 0/44 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2025-03-17 19:25:28,286 INFO L82 GeneralOperation]: Start removeDead. Operand has 69 places, 56 transitions, 140 flow [2025-03-17 19:25:28,288 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 50 transitions, 121 flow [2025-03-17 19:25:28,294 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:25:28,302 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;@16336406, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:25:28,302 INFO L334 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2025-03-17 19:25:28,306 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:25:28,306 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2025-03-17 19:25:28,306 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2025-03-17 19:25:28,306 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:25:28,307 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2025-03-17 19:25:28,307 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2025-03-17 19:25:28,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:25:28,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1673961893, now seen corresponding path program 1 times [2025-03-17 19:25:28,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:25:28,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437269089] [2025-03-17 19:25:28,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:25:28,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:25:28,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-03-17 19:25:28,393 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-03-17 19:25:28,395 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:25:28,395 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:25:28,486 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 19:25:28,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:25:28,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437269089] [2025-03-17 19:25:28,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437269089] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:25:28,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:25:28,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2025-03-17 19:25:28,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068888861] [2025-03-17 19:25:28,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:25:28,494 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:25:28,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:25:28,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:25:28,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:25:28,528 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 56 [2025-03-17 19:25:28,530 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:25:28,530 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:25:28,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 56 [2025-03-17 19:25:28,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:25:32,164 INFO L124 PetriNetUnfolderBase]: 64590/88978 cut-off events. [2025-03-17 19:25:32,164 INFO L125 PetriNetUnfolderBase]: For 6723/6723 co-relation queries the response was YES. [2025-03-17 19:25:32,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181651 conditions, 88978 events. 64590/88978 cut-off events. For 6723/6723 co-relation queries the response was YES. Maximal size of possible extension queue 2257. Compared 568264 event pairs, 23709 based on Foata normal form. 0/83104 useless extension candidates. Maximal degree in co-relation 164065. Up to 46087 conditions per place. [2025-03-17 19:25:32,698 INFO L140 encePairwiseOnDemand]: 41/56 looper letters, 77 selfloop transitions, 7 changer transitions 0/86 dead transitions. [2025-03-17 19:25:32,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 86 transitions, 376 flow [2025-03-17 19:25:32,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:25:32,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:25:32,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2025-03-17 19:25:32,709 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6547619047619048 [2025-03-17 19:25:32,710 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 121 flow. Second operand 3 states and 110 transitions. [2025-03-17 19:25:32,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 86 transitions, 376 flow [2025-03-17 19:25:32,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 86 transitions, 354 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-03-17 19:25:32,887 INFO L231 Difference]: Finished difference. Result has 60 places, 56 transitions, 176 flow [2025-03-17 19:25:32,888 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=176, PETRI_PLACES=60, PETRI_TRANSITIONS=56} [2025-03-17 19:25:32,893 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, -3 predicate places. [2025-03-17 19:25:32,893 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 56 transitions, 176 flow [2025-03-17 19:25:32,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:25:32,893 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:25:32,894 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:25:32,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:25:32,894 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2025-03-17 19:25:32,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:25:32,895 INFO L85 PathProgramCache]: Analyzing trace with hash 977079625, now seen corresponding path program 1 times [2025-03-17 19:25:32,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:25:32,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610585888] [2025-03-17 19:25:32,895 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:25:32,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:25:32,910 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:25:32,923 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:25:32,923 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:25:32,923 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:25:33,004 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 19:25:33,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:25:33,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610585888] [2025-03-17 19:25:33,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610585888] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:25:33,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:25:33,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:25:33,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192202598] [2025-03-17 19:25:33,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:25:33,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:25:33,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:25:33,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:25:33,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:25:33,006 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 56 [2025-03-17 19:25:33,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 56 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:25:33,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:25:33,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 56 [2025-03-17 19:25:33,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:25:35,241 INFO L124 PetriNetUnfolderBase]: 37862/53300 cut-off events. [2025-03-17 19:25:35,242 INFO L125 PetriNetUnfolderBase]: For 15222/15235 co-relation queries the response was YES. [2025-03-17 19:25:35,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118490 conditions, 53300 events. 37862/53300 cut-off events. For 15222/15235 co-relation queries the response was YES. Maximal size of possible extension queue 1256. Compared 327505 event pairs, 8659 based on Foata normal form. 3189/54921 useless extension candidates. Maximal degree in co-relation 16535. Up to 29793 conditions per place. [2025-03-17 19:25:35,431 INFO L140 encePairwiseOnDemand]: 41/56 looper letters, 93 selfloop transitions, 11 changer transitions 18/124 dead transitions. [2025-03-17 19:25:35,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 124 transitions, 584 flow [2025-03-17 19:25:35,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:25:35,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:25:35,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 152 transitions. [2025-03-17 19:25:35,432 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6785714285714286 [2025-03-17 19:25:35,433 INFO L175 Difference]: Start difference. First operand has 60 places, 56 transitions, 176 flow. Second operand 4 states and 152 transitions. [2025-03-17 19:25:35,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 124 transitions, 584 flow [2025-03-17 19:25:35,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 124 transitions, 570 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:25:35,460 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 225 flow [2025-03-17 19:25:35,460 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=225, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2025-03-17 19:25:35,460 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2025-03-17 19:25:35,460 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 225 flow [2025-03-17 19:25:35,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:25:35,461 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:25:35,461 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:25:35,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 19:25:35,461 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2025-03-17 19:25:35,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:25:35,462 INFO L85 PathProgramCache]: Analyzing trace with hash 977079626, now seen corresponding path program 1 times [2025-03-17 19:25:35,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:25:35,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034278310] [2025-03-17 19:25:35,462 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:25:35,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:25:35,470 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:25:35,477 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:25:35,478 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:25:35,478 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:25:35,548 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 19:25:35,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:25:35,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034278310] [2025-03-17 19:25:35,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034278310] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:25:35,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:25:35,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:25:35,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169356195] [2025-03-17 19:25:35,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:25:35,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:25:35,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:25:35,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:25:35,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:25:35,551 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 56 [2025-03-17 19:25:35,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 225 flow. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:25:35,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:25:35,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 56 [2025-03-17 19:25:35,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:25:37,420 INFO L124 PetriNetUnfolderBase]: 33255/47011 cut-off events. [2025-03-17 19:25:37,420 INFO L125 PetriNetUnfolderBase]: For 18141/18145 co-relation queries the response was YES. [2025-03-17 19:25:37,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109274 conditions, 47011 events. 33255/47011 cut-off events. For 18141/18145 co-relation queries the response was YES. Maximal size of possible extension queue 1136. Compared 286166 event pairs, 5718 based on Foata normal form. 1272/48273 useless extension candidates. Maximal degree in co-relation 36398. Up to 23329 conditions per place. [2025-03-17 19:25:37,633 INFO L140 encePairwiseOnDemand]: 41/56 looper letters, 93 selfloop transitions, 15 changer transitions 12/122 dead transitions. [2025-03-17 19:25:37,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 122 transitions, 623 flow [2025-03-17 19:25:37,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:25:37,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:25:37,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 146 transitions. [2025-03-17 19:25:37,636 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6517857142857143 [2025-03-17 19:25:37,636 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 225 flow. Second operand 4 states and 146 transitions. [2025-03-17 19:25:37,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 122 transitions, 623 flow [2025-03-17 19:25:37,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 122 transitions, 616 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:25:37,652 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 298 flow [2025-03-17 19:25:37,653 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=66, PETRI_TRANSITIONS=62} [2025-03-17 19:25:37,653 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2025-03-17 19:25:37,654 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 298 flow [2025-03-17 19:25:37,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:25:37,654 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:25:37,654 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:25:37,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:25:37,654 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2025-03-17 19:25:37,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:25:37,655 INFO L85 PathProgramCache]: Analyzing trace with hash -999895983, now seen corresponding path program 1 times [2025-03-17 19:25:37,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:25:37,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744058703] [2025-03-17 19:25:37,655 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:25:37,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:25:37,667 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-17 19:25:37,676 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-17 19:25:37,676 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:25:37,676 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:25:37,921 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 19:25:37,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:25:37,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744058703] [2025-03-17 19:25:37,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744058703] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:25:37,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:25:37,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:25:37,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401909531] [2025-03-17 19:25:37,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:25:37,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-17 19:25:37,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:25:37,922 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-17 19:25:37,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-17 19:25:37,922 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 56 [2025-03-17 19:25:37,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 298 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:25:37,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:25:37,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 56 [2025-03-17 19:25:37,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:25:39,621 INFO L124 PetriNetUnfolderBase]: 34383/48452 cut-off events. [2025-03-17 19:25:39,621 INFO L125 PetriNetUnfolderBase]: For 32994/32998 co-relation queries the response was YES. [2025-03-17 19:25:39,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116859 conditions, 48452 events. 34383/48452 cut-off events. For 32994/32998 co-relation queries the response was YES. Maximal size of possible extension queue 1191. Compared 293799 event pairs, 22814 based on Foata normal form. 996/49438 useless extension candidates. Maximal degree in co-relation 38218. Up to 38824 conditions per place. [2025-03-17 19:25:39,799 INFO L140 encePairwiseOnDemand]: 43/56 looper letters, 75 selfloop transitions, 11 changer transitions 6/94 dead transitions. [2025-03-17 19:25:39,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 94 transitions, 566 flow [2025-03-17 19:25:39,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-17 19:25:39,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2025-03-17 19:25:39,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 104 transitions. [2025-03-17 19:25:39,800 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6190476190476191 [2025-03-17 19:25:39,800 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 298 flow. Second operand 3 states and 104 transitions. [2025-03-17 19:25:39,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 94 transitions, 566 flow [2025-03-17 19:25:39,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 94 transitions, 534 flow, removed 4 selfloop flow, removed 2 redundant places. [2025-03-17 19:25:39,825 INFO L231 Difference]: Finished difference. Result has 68 places, 60 transitions, 312 flow [2025-03-17 19:25:39,826 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=68, PETRI_TRANSITIONS=60} [2025-03-17 19:25:39,826 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 5 predicate places. [2025-03-17 19:25:39,826 INFO L471 AbstractCegarLoop]: Abstraction has has 68 places, 60 transitions, 312 flow [2025-03-17 19:25:39,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:25:39,827 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:25:39,827 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:25:39,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:25:39,827 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2025-03-17 19:25:39,827 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:25:39,827 INFO L85 PathProgramCache]: Analyzing trace with hash -384862247, now seen corresponding path program 1 times [2025-03-17 19:25:39,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:25:39,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473774353] [2025-03-17 19:25:39,828 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:25:39,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:25:39,833 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:25:39,842 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:25:39,843 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:25:39,843 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:25:39,906 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 19:25:39,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:25:39,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473774353] [2025-03-17 19:25:39,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473774353] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:25:39,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:25:39,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:25:39,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858589602] [2025-03-17 19:25:39,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:25:39,906 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:25:39,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:25:39,907 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:25:39,907 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:25:39,907 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 56 [2025-03-17 19:25:39,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 60 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 19:25:39,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:25:39,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 56 [2025-03-17 19:25:39,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:25:41,774 INFO L124 PetriNetUnfolderBase]: 26896/38406 cut-off events. [2025-03-17 19:25:41,774 INFO L125 PetriNetUnfolderBase]: For 31940/31944 co-relation queries the response was YES. [2025-03-17 19:25:41,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95021 conditions, 38406 events. 26896/38406 cut-off events. For 31940/31944 co-relation queries the response was YES. Maximal size of possible extension queue 864. Compared 228511 event pairs, 2875 based on Foata normal form. 236/38632 useless extension candidates. Maximal degree in co-relation 39410. Up to 19683 conditions per place. [2025-03-17 19:25:41,930 INFO L140 encePairwiseOnDemand]: 43/56 looper letters, 161 selfloop transitions, 20 changer transitions 5/188 dead transitions. [2025-03-17 19:25:41,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 188 transitions, 1011 flow [2025-03-17 19:25:41,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 19:25:41,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 19:25:41,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 241 transitions. [2025-03-17 19:25:41,932 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4781746031746032 [2025-03-17 19:25:41,932 INFO L175 Difference]: Start difference. First operand has 68 places, 60 transitions, 312 flow. Second operand 9 states and 241 transitions. [2025-03-17 19:25:41,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 188 transitions, 1011 flow [2025-03-17 19:25:42,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 188 transitions, 971 flow, removed 6 selfloop flow, removed 2 redundant places. [2025-03-17 19:25:42,085 INFO L231 Difference]: Finished difference. Result has 77 places, 65 transitions, 386 flow [2025-03-17 19:25:42,085 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=386, PETRI_PLACES=77, PETRI_TRANSITIONS=65} [2025-03-17 19:25:42,085 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 14 predicate places. [2025-03-17 19:25:42,085 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 65 transitions, 386 flow [2025-03-17 19:25:42,085 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 19:25:42,085 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:25:42,085 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:25:42,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:25:42,086 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2025-03-17 19:25:42,086 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:25:42,086 INFO L85 PathProgramCache]: Analyzing trace with hash -931982978, now seen corresponding path program 1 times [2025-03-17 19:25:42,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:25:42,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247004093] [2025-03-17 19:25:42,086 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:25:42,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:25:42,094 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:25:42,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:25:42,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:25:42,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:25:42,154 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 19:25:42,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:25:42,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247004093] [2025-03-17 19:25:42,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247004093] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:25:42,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:25:42,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:25:42,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587874174] [2025-03-17 19:25:42,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:25:42,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:25:42,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:25:42,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:25:42,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:25:42,157 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 56 [2025-03-17 19:25:42,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 65 transitions, 386 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 19:25:42,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:25:42,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 56 [2025-03-17 19:25:42,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:25:43,703 INFO L124 PetriNetUnfolderBase]: 25525/36461 cut-off events. [2025-03-17 19:25:43,703 INFO L125 PetriNetUnfolderBase]: For 34398/34402 co-relation queries the response was YES. [2025-03-17 19:25:43,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90543 conditions, 36461 events. 25525/36461 cut-off events. For 34398/34402 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 215231 event pairs, 3416 based on Foata normal form. 468/36919 useless extension candidates. Maximal degree in co-relation 72449. Up to 14907 conditions per place. [2025-03-17 19:25:43,837 INFO L140 encePairwiseOnDemand]: 43/56 looper letters, 99 selfloop transitions, 12 changer transitions 28/141 dead transitions. [2025-03-17 19:25:43,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 141 transitions, 781 flow [2025-03-17 19:25:43,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:25:43,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:25:43,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 179 transitions. [2025-03-17 19:25:43,838 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45663265306122447 [2025-03-17 19:25:43,838 INFO L175 Difference]: Start difference. First operand has 77 places, 65 transitions, 386 flow. Second operand 7 states and 179 transitions. [2025-03-17 19:25:43,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 141 transitions, 781 flow [2025-03-17 19:25:44,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 141 transitions, 750 flow, removed 5 selfloop flow, removed 3 redundant places. [2025-03-17 19:25:44,120 INFO L231 Difference]: Finished difference. Result has 77 places, 54 transitions, 263 flow [2025-03-17 19:25:44,120 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=263, PETRI_PLACES=77, PETRI_TRANSITIONS=54} [2025-03-17 19:25:44,120 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 14 predicate places. [2025-03-17 19:25:44,120 INFO L471 AbstractCegarLoop]: Abstraction has has 77 places, 54 transitions, 263 flow [2025-03-17 19:25:44,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 19:25:44,121 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:25:44,121 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:25:44,121 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:25:44,121 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2025-03-17 19:25:44,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:25:44,121 INFO L85 PathProgramCache]: Analyzing trace with hash 18716813, now seen corresponding path program 1 times [2025-03-17 19:25:44,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:25:44,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413082559] [2025-03-17 19:25:44,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:25:44,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:25:44,127 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:25:44,131 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:25:44,132 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:25:44,132 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:25:44,182 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 19:25:44,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:25:44,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413082559] [2025-03-17 19:25:44,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413082559] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:25:44,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:25:44,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:25:44,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794250151] [2025-03-17 19:25:44,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:25:44,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:25:44,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:25:44,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:25:44,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:25:44,183 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 56 [2025-03-17 19:25:44,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 54 transitions, 263 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 19:25:44,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:25:44,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 56 [2025-03-17 19:25:44,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:25:45,965 INFO L124 PetriNetUnfolderBase]: 21796/31028 cut-off events. [2025-03-17 19:25:45,965 INFO L125 PetriNetUnfolderBase]: For 23426/23430 co-relation queries the response was YES. [2025-03-17 19:25:46,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77137 conditions, 31028 events. 21796/31028 cut-off events. For 23426/23430 co-relation queries the response was YES. Maximal size of possible extension queue 682. Compared 176666 event pairs, 2073 based on Foata normal form. 224/31242 useless extension candidates. Maximal degree in co-relation 75929. Up to 15712 conditions per place. [2025-03-17 19:25:46,105 INFO L140 encePairwiseOnDemand]: 46/56 looper letters, 137 selfloop transitions, 16 changer transitions 5/160 dead transitions. [2025-03-17 19:25:46,106 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 160 transitions, 853 flow [2025-03-17 19:25:46,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-17 19:25:46,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2025-03-17 19:25:46,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 214 transitions. [2025-03-17 19:25:46,107 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4246031746031746 [2025-03-17 19:25:46,107 INFO L175 Difference]: Start difference. First operand has 77 places, 54 transitions, 263 flow. Second operand 9 states and 214 transitions. [2025-03-17 19:25:46,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 160 transitions, 853 flow [2025-03-17 19:25:46,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 160 transitions, 783 flow, removed 8 selfloop flow, removed 8 redundant places. [2025-03-17 19:25:46,262 INFO L231 Difference]: Finished difference. Result has 76 places, 59 transitions, 299 flow [2025-03-17 19:25:46,262 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=299, PETRI_PLACES=76, PETRI_TRANSITIONS=59} [2025-03-17 19:25:46,263 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 13 predicate places. [2025-03-17 19:25:46,263 INFO L471 AbstractCegarLoop]: Abstraction has has 76 places, 59 transitions, 299 flow [2025-03-17 19:25:46,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 19:25:46,263 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:25:46,263 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:25:46,263 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:25:46,264 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2025-03-17 19:25:46,264 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:25:46,264 INFO L85 PathProgramCache]: Analyzing trace with hash 18716812, now seen corresponding path program 1 times [2025-03-17 19:25:46,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:25:46,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17166622] [2025-03-17 19:25:46,264 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:25:46,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:25:46,270 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 19 statements into 1 equivalence classes. [2025-03-17 19:25:46,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 19 of 19 statements. [2025-03-17 19:25:46,278 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:25:46,278 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:25:46,360 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 19:25:46,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:25:46,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17166622] [2025-03-17 19:25:46,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17166622] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:25:46,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:25:46,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:25:46,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372064217] [2025-03-17 19:25:46,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:25:46,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:25:46,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:25:46,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:25:46,364 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:25:46,366 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 56 [2025-03-17 19:25:46,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 299 flow. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 19:25:46,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:25:46,366 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 56 [2025-03-17 19:25:46,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:25:47,535 INFO L124 PetriNetUnfolderBase]: 20476/29176 cut-off events. [2025-03-17 19:25:47,535 INFO L125 PetriNetUnfolderBase]: For 23584/23588 co-relation queries the response was YES. [2025-03-17 19:25:47,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70836 conditions, 29176 events. 20476/29176 cut-off events. For 23584/23588 co-relation queries the response was YES. Maximal size of possible extension queue 632. Compared 164962 event pairs, 2687 based on Foata normal form. 444/29610 useless extension candidates. Maximal degree in co-relation 56444. Up to 14165 conditions per place. [2025-03-17 19:25:47,696 INFO L140 encePairwiseOnDemand]: 46/56 looper letters, 93 selfloop transitions, 8 changer transitions 21/124 dead transitions. [2025-03-17 19:25:47,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 124 transitions, 632 flow [2025-03-17 19:25:47,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:25:47,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:25:47,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 164 transitions. [2025-03-17 19:25:47,697 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41836734693877553 [2025-03-17 19:25:47,697 INFO L175 Difference]: Start difference. First operand has 76 places, 59 transitions, 299 flow. Second operand 7 states and 164 transitions. [2025-03-17 19:25:47,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 124 transitions, 632 flow [2025-03-17 19:25:47,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 124 transitions, 607 flow, removed 1 selfloop flow, removed 5 redundant places. [2025-03-17 19:25:47,942 INFO L231 Difference]: Finished difference. Result has 72 places, 46 transitions, 171 flow [2025-03-17 19:25:47,942 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=171, PETRI_PLACES=72, PETRI_TRANSITIONS=46} [2025-03-17 19:25:47,943 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2025-03-17 19:25:47,943 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 46 transitions, 171 flow [2025-03-17 19:25:47,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 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 19:25:47,943 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:25:47,943 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:25:47,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 19:25:47,943 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2025-03-17 19:25:47,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:25:47,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1826332868, now seen corresponding path program 1 times [2025-03-17 19:25:47,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:25:47,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065788995] [2025-03-17 19:25:47,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:25:47,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:25:47,949 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-17 19:25:47,955 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 19:25:47,957 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:25:47,957 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:25:48,035 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 19:25:48,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:25:48,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065788995] [2025-03-17 19:25:48,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065788995] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:25:48,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:25:48,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:25:48,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216817450] [2025-03-17 19:25:48,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:25:48,036 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:25:48,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:25:48,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:25:48,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:25:48,038 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 56 [2025-03-17 19:25:48,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 46 transitions, 171 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 19:25:48,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:25:48,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 56 [2025-03-17 19:25:48,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:25:48,774 INFO L124 PetriNetUnfolderBase]: 15112/21313 cut-off events. [2025-03-17 19:25:48,775 INFO L125 PetriNetUnfolderBase]: For 10877/10881 co-relation queries the response was YES. [2025-03-17 19:25:48,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50541 conditions, 21313 events. 15112/21313 cut-off events. For 10877/10881 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 112001 event pairs, 756 based on Foata normal form. 120/21423 useless extension candidates. Maximal degree in co-relation 49389. Up to 8471 conditions per place. [2025-03-17 19:25:48,903 INFO L140 encePairwiseOnDemand]: 49/56 looper letters, 77 selfloop transitions, 6 changer transitions 32/117 dead transitions. [2025-03-17 19:25:48,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 117 transitions, 552 flow [2025-03-17 19:25:48,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:25:48,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:25:48,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 158 transitions. [2025-03-17 19:25:48,904 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4030612244897959 [2025-03-17 19:25:48,904 INFO L175 Difference]: Start difference. First operand has 72 places, 46 transitions, 171 flow. Second operand 7 states and 158 transitions. [2025-03-17 19:25:48,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 117 transitions, 552 flow [2025-03-17 19:25:49,014 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 117 transitions, 518 flow, removed 4 selfloop flow, removed 10 redundant places. [2025-03-17 19:25:49,015 INFO L231 Difference]: Finished difference. Result has 63 places, 40 transitions, 128 flow [2025-03-17 19:25:49,015 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=128, PETRI_PLACES=63, PETRI_TRANSITIONS=40} [2025-03-17 19:25:49,015 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, 0 predicate places. [2025-03-17 19:25:49,015 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 40 transitions, 128 flow [2025-03-17 19:25:49,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 19:25:49,016 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:25:49,016 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:25:49,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 19:25:49,016 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2025-03-17 19:25:49,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:25:49,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1826318994, now seen corresponding path program 1 times [2025-03-17 19:25:49,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:25:49,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972831962] [2025-03-17 19:25:49,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:25:49,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:25:49,021 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 25 statements into 1 equivalence classes. [2025-03-17 19:25:49,025 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 25 of 25 statements. [2025-03-17 19:25:49,025 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:25:49,025 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:25:49,090 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 19:25:49,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:25:49,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972831962] [2025-03-17 19:25:49,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972831962] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:25:49,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:25:49,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:25:49,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456340415] [2025-03-17 19:25:49,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:25:49,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:25:49,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:25:49,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:25:49,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:25:49,091 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 56 [2025-03-17 19:25:49,091 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 40 transitions, 128 flow. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 19:25:49,091 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:25:49,091 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 56 [2025-03-17 19:25:49,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:25:49,728 INFO L124 PetriNetUnfolderBase]: 12176/17186 cut-off events. [2025-03-17 19:25:49,728 INFO L125 PetriNetUnfolderBase]: For 5499/5503 co-relation queries the response was YES. [2025-03-17 19:25:49,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39036 conditions, 17186 events. 12176/17186 cut-off events. For 5499/5503 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 88384 event pairs, 701 based on Foata normal form. 114/17290 useless extension candidates. Maximal degree in co-relation 6428. Up to 7308 conditions per place. [2025-03-17 19:25:49,772 INFO L140 encePairwiseOnDemand]: 50/56 looper letters, 0 selfloop transitions, 0 changer transitions 97/97 dead transitions. [2025-03-17 19:25:49,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 97 transitions, 437 flow [2025-03-17 19:25:49,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-17 19:25:49,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2025-03-17 19:25:49,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2025-03-17 19:25:49,773 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.3520408163265306 [2025-03-17 19:25:49,773 INFO L175 Difference]: Start difference. First operand has 63 places, 40 transitions, 128 flow. Second operand 7 states and 138 transitions. [2025-03-17 19:25:49,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 97 transitions, 437 flow [2025-03-17 19:25:49,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 97 transitions, 415 flow, removed 0 selfloop flow, removed 7 redundant places. [2025-03-17 19:25:49,781 INFO L231 Difference]: Finished difference. Result has 53 places, 0 transitions, 0 flow [2025-03-17 19:25:49,781 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=56, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=53, PETRI_TRANSITIONS=0} [2025-03-17 19:25:49,781 INFO L279 CegarLoopForPetriNet]: 63 programPoint places, -10 predicate places. [2025-03-17 19:25:49,782 INFO L471 AbstractCegarLoop]: Abstraction has has 53 places, 0 transitions, 0 flow [2025-03-17 19:25:49,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 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 19:25:49,784 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2025-03-17 19:25:49,784 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2025-03-17 19:25:49,784 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2025-03-17 19:25:49,784 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2025-03-17 19:25:49,784 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 16 remaining) [2025-03-17 19:25:49,784 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 16 remaining) [2025-03-17 19:25:49,784 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 16 remaining) [2025-03-17 19:25:49,785 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2025-03-17 19:25:49,785 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2025-03-17 19:25:49,785 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2025-03-17 19:25:49,785 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2025-03-17 19:25:49,785 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2025-03-17 19:25:49,785 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2025-03-17 19:25:49,785 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2025-03-17 19:25:49,785 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2025-03-17 19:25:49,785 INFO L782 garLoopResultBuilder]: Registering result SAFE for location readerErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2025-03-17 19:25:49,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 19:25:49,786 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:25:49,789 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 19:25:49,789 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 19:25:49,793 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 07:25:49 BasicIcfg [2025-03-17 19:25:49,793 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 19:25:49,794 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 19:25:49,794 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 19:25:49,794 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 19:25:49,795 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:25:28" (3/4) ... [2025-03-17 19:25:49,796 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-17 19:25:49,798 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure reader [2025-03-17 19:25:49,798 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure writer [2025-03-17 19:25:49,804 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 32 nodes and edges [2025-03-17 19:25:49,804 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2025-03-17 19:25:49,804 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2025-03-17 19:25:49,804 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2025-03-17 19:25:49,864 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 19:25:49,864 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 19:25:49,864 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 19:25:49,865 INFO L158 Benchmark]: Toolchain (without parser) took 22372.04ms. Allocated memory was 142.6MB in the beginning and 9.5GB in the end (delta: 9.3GB). Free memory was 104.7MB in the beginning and 6.9GB in the end (delta: -6.8GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. [2025-03-17 19:25:49,865 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:25:49,865 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.18ms. Allocated memory is still 142.6MB. Free memory was 104.7MB in the beginning and 85.4MB in the end (delta: 19.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 19:25:49,865 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.59ms. Allocated memory is still 142.6MB. Free memory was 85.4MB in the beginning and 83.2MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:25:49,866 INFO L158 Benchmark]: Boogie Preprocessor took 21.46ms. Allocated memory is still 142.6MB. Free memory was 83.2MB in the beginning and 82.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:25:49,866 INFO L158 Benchmark]: IcfgBuilder took 325.20ms. Allocated memory is still 142.6MB. Free memory was 82.1MB in the beginning and 60.3MB in the end (delta: 21.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-17 19:25:49,866 INFO L158 Benchmark]: TraceAbstraction took 21633.23ms. Allocated memory was 142.6MB in the beginning and 9.5GB in the end (delta: 9.3GB). Free memory was 59.2MB in the beginning and 6.9GB in the end (delta: -6.9GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. [2025-03-17 19:25:49,866 INFO L158 Benchmark]: Witness Printer took 70.54ms. Allocated memory is still 9.5GB. Free memory was 6.9GB in the beginning and 6.9GB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:25:49,867 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 201.3MB. Free memory is still 126.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.18ms. Allocated memory is still 142.6MB. Free memory was 104.7MB in the beginning and 85.4MB in the end (delta: 19.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.59ms. Allocated memory is still 142.6MB. Free memory was 85.4MB in the beginning and 83.2MB in the end (delta: 2.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 21.46ms. Allocated memory is still 142.6MB. Free memory was 83.2MB in the beginning and 82.1MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 325.20ms. Allocated memory is still 142.6MB. Free memory was 82.1MB in the beginning and 60.3MB in the end (delta: 21.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 21633.23ms. Allocated memory was 142.6MB in the beginning and 9.5GB in the end (delta: 9.3GB). Free memory was 59.2MB in the beginning and 6.9GB in the end (delta: -6.9GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. * Witness Printer took 70.54ms. Allocated memory is still 9.5GB. Free memory was 6.9GB in the beginning and 6.9GB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 711]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 711]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 740]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 740]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 82 locations, 83 edges, 16 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: 21.5s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 20.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 830 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 830 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 90 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2083 IncrementalHoareTripleChecker+Invalid, 2173 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 90 mSolverCounterUnsat, 0 mSDtfsCounter, 2083 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=386occurred in iteration=5, InterpolantAutomatonStates: 60, 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, 0.9s InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 460 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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! [2025-03-17 19:25:49,880 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