./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c --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/weaver/chl-simpl-str-subst.wvr.c -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 58f1358e24877c92a149b6121e272e93974801203e91da3c444aa78d712ada40 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:42:04,597 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:42:04,653 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:42:04,658 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:42:04,658 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:42:04,676 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:42:04,676 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:42:04,676 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:42:04,678 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:42:04,678 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:42:04,678 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:42:04,679 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:42:04,679 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:42:04,679 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:42:04,679 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:42:04,679 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:42:04,679 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:42:04,679 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:42:04,680 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:42:04,680 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:42:04,680 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:42:04,680 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:42:04,680 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:42:04,680 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:42:04,680 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:42:04,680 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:42:04,680 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:42:04,680 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:42:04,680 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:42:04,680 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:42:04,680 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:42:04,680 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:42:04,680 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:42:04,680 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:42:04,680 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:42:04,681 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:42:04,681 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:42:04,681 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:42:04,681 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:42:04,681 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:42:04,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:42:04,681 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:42:04,681 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:42:04,681 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:42:04,681 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:42:04,681 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 -> 58f1358e24877c92a149b6121e272e93974801203e91da3c444aa78d712ada40 [2025-03-17 19:42:04,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:42:04,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:42:04,949 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:42:04,950 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:42:04,951 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:42:04,953 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2025-03-17 19:42:06,100 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/934262ab5/58826f2c5ad147d082a8b401edd3670e/FLAG5c8081e92 [2025-03-17 19:42:06,316 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:42:06,317 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2025-03-17 19:42:06,324 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/934262ab5/58826f2c5ad147d082a8b401edd3670e/FLAG5c8081e92 [2025-03-17 19:42:06,652 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/934262ab5/58826f2c5ad147d082a8b401edd3670e [2025-03-17 19:42:06,654 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:42:06,656 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:42:06,657 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:42:06,657 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:42:06,660 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:42:06,661 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:42:06" (1/1) ... [2025-03-17 19:42:06,661 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c2b0be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:06, skipping insertion in model container [2025-03-17 19:42:06,662 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:42:06" (1/1) ... [2025-03-17 19:42:06,672 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:42:06,794 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:42:06,801 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:42:06,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:42:06,834 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:42:06,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:06 WrapperNode [2025-03-17 19:42:06,835 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:42:06,836 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:42:06,836 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:42:06,836 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:42:06,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:06" (1/1) ... [2025-03-17 19:42:06,846 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:06" (1/1) ... [2025-03-17 19:42:06,868 INFO L138 Inliner]: procedures = 22, calls = 17, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 201 [2025-03-17 19:42:06,871 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:42:06,871 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:42:06,872 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:42:06,872 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:42:06,878 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:06" (1/1) ... [2025-03-17 19:42:06,878 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:06" (1/1) ... [2025-03-17 19:42:06,884 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:06" (1/1) ... [2025-03-17 19:42:06,902 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 19:42:06,903 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:06" (1/1) ... [2025-03-17 19:42:06,903 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:06" (1/1) ... [2025-03-17 19:42:06,908 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:06" (1/1) ... [2025-03-17 19:42:06,912 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:06" (1/1) ... [2025-03-17 19:42:06,913 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:06" (1/1) ... [2025-03-17 19:42:06,914 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:06" (1/1) ... [2025-03-17 19:42:06,915 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:42:06,922 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:42:06,922 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:42:06,922 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:42:06,923 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:06" (1/1) ... [2025-03-17 19:42:06,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:42:06,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:42:06,951 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 19:42:06,953 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 19:42:06,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:42:06,970 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 19:42:06,970 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 19:42:06,970 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 19:42:06,970 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 19:42:06,970 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 19:42:06,970 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 19:42:06,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:42:06,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:42:06,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:42:06,971 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 19:42:07,050 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:42:07,051 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:42:07,355 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:42:07,355 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:42:07,519 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:42:07,519 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:42:07,519 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:42:07 BoogieIcfgContainer [2025-03-17 19:42:07,519 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:42:07,521 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:42:07,521 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:42:07,524 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:42:07,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:42:06" (1/3) ... [2025-03-17 19:42:07,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324cedd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:42:07, skipping insertion in model container [2025-03-17 19:42:07,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:42:06" (2/3) ... [2025-03-17 19:42:07,525 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@324cedd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:42:07, skipping insertion in model container [2025-03-17 19:42:07,525 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:42:07" (3/3) ... [2025-03-17 19:42:07,526 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2025-03-17 19:42:07,536 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:42:07,538 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-simpl-str-subst.wvr.c that has 4 procedures, 78 locations, 1 initial locations, 0 loop locations, and 18 error locations. [2025-03-17 19:42:07,538 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:42:07,593 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 19:42:07,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 89 transitions, 199 flow [2025-03-17 19:42:07,663 INFO L124 PetriNetUnfolderBase]: 12/86 cut-off events. [2025-03-17 19:42:07,665 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 19:42:07,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 86 events. 12/86 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 337 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2025-03-17 19:42:07,670 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 89 transitions, 199 flow [2025-03-17 19:42:07,674 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 84 transitions, 183 flow [2025-03-17 19:42:07,683 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:42:07,697 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;@108ea1d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:42:07,697 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2025-03-17 19:42:07,707 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:42:07,708 INFO L124 PetriNetUnfolderBase]: 3/27 cut-off events. [2025-03-17 19:42:07,708 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:42:07,709 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:07,709 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:07,710 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:42:07,713 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:07,714 INFO L85 PathProgramCache]: Analyzing trace with hash -657266935, now seen corresponding path program 1 times [2025-03-17 19:42:07,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:07,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250838655] [2025-03-17 19:42:07,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:07,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:07,776 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-17 19:42:07,789 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-17 19:42:07,790 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:07,790 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:07,904 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 19:42:07,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:07,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250838655] [2025-03-17 19:42:07,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250838655] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:07,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:07,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:07,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817918826] [2025-03-17 19:42:07,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:07,912 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:07,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:07,931 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:07,931 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:07,965 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 89 [2025-03-17 19:42:07,967 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 84 transitions, 183 flow. Second operand has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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 19:42:07,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:07,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 89 [2025-03-17 19:42:07,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:09,039 INFO L124 PetriNetUnfolderBase]: 8633/13840 cut-off events. [2025-03-17 19:42:09,039 INFO L125 PetriNetUnfolderBase]: For 260/260 co-relation queries the response was YES. [2025-03-17 19:42:09,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25678 conditions, 13840 events. 8633/13840 cut-off events. For 260/260 co-relation queries the response was YES. Maximal size of possible extension queue 841. Compared 105912 event pairs, 2832 based on Foata normal form. 364/11550 useless extension candidates. Maximal degree in co-relation 24979. Up to 5668 conditions per place. [2025-03-17 19:42:09,166 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 86 selfloop transitions, 5 changer transitions 0/133 dead transitions. [2025-03-17 19:42:09,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 133 transitions, 475 flow [2025-03-17 19:42:09,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:09,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:09,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 274 transitions. [2025-03-17 19:42:09,180 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7696629213483146 [2025-03-17 19:42:09,182 INFO L175 Difference]: Start difference. First operand has 82 places, 84 transitions, 183 flow. Second operand 4 states and 274 transitions. [2025-03-17 19:42:09,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 133 transitions, 475 flow [2025-03-17 19:42:09,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 133 transitions, 460 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 19:42:09,211 INFO L231 Difference]: Finished difference. Result has 82 places, 86 transitions, 208 flow [2025-03-17 19:42:09,213 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=208, PETRI_PLACES=82, PETRI_TRANSITIONS=86} [2025-03-17 19:42:09,216 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 0 predicate places. [2025-03-17 19:42:09,216 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 86 transitions, 208 flow [2025-03-17 19:42:09,217 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.25) internal successors, (185), 4 states have internal predecessors, (185), 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 19:42:09,217 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:09,217 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:09,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:42:09,217 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:42:09,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:09,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1099562034, now seen corresponding path program 1 times [2025-03-17 19:42:09,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:09,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840484913] [2025-03-17 19:42:09,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:09,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:09,226 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:42:09,239 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:42:09,239 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:09,239 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:09,305 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 19:42:09,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:09,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840484913] [2025-03-17 19:42:09,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840484913] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:09,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:09,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:42:09,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712830896] [2025-03-17 19:42:09,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:09,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:09,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:09,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:09,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:09,325 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 89 [2025-03-17 19:42:09,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 86 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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 19:42:09,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:09,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 89 [2025-03-17 19:42:09,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:10,023 INFO L124 PetriNetUnfolderBase]: 6311/11503 cut-off events. [2025-03-17 19:42:10,023 INFO L125 PetriNetUnfolderBase]: For 2345/2363 co-relation queries the response was YES. [2025-03-17 19:42:10,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22474 conditions, 11503 events. 6311/11503 cut-off events. For 2345/2363 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 97866 event pairs, 1511 based on Foata normal form. 18/9933 useless extension candidates. Maximal degree in co-relation 11989. Up to 5147 conditions per place. [2025-03-17 19:42:10,114 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 58 selfloop transitions, 4 changer transitions 0/108 dead transitions. [2025-03-17 19:42:10,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 108 transitions, 379 flow [2025-03-17 19:42:10,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:10,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:10,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 253 transitions. [2025-03-17 19:42:10,116 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7106741573033708 [2025-03-17 19:42:10,116 INFO L175 Difference]: Start difference. First operand has 82 places, 86 transitions, 208 flow. Second operand 4 states and 253 transitions. [2025-03-17 19:42:10,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 108 transitions, 379 flow [2025-03-17 19:42:10,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 108 transitions, 379 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:42:10,141 INFO L231 Difference]: Finished difference. Result has 84 places, 85 transitions, 214 flow [2025-03-17 19:42:10,141 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=84, PETRI_TRANSITIONS=85} [2025-03-17 19:42:10,142 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 2 predicate places. [2025-03-17 19:42:10,142 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 85 transitions, 214 flow [2025-03-17 19:42:10,142 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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 19:42:10,142 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:10,142 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:10,143 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 19:42:10,143 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:42:10,143 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:10,143 INFO L85 PathProgramCache]: Analyzing trace with hash -273345523, now seen corresponding path program 1 times [2025-03-17 19:42:10,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:10,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177062810] [2025-03-17 19:42:10,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:10,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:10,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:42:10,153 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:42:10,153 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:10,153 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:10,231 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 19:42:10,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:10,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177062810] [2025-03-17 19:42:10,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177062810] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:10,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:10,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:42:10,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901343309] [2025-03-17 19:42:10,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:10,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:10,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:10,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:10,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:10,249 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 89 [2025-03-17 19:42:10,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 85 transitions, 214 flow. Second operand has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 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 19:42:10,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:10,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 89 [2025-03-17 19:42:10,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:10,942 INFO L124 PetriNetUnfolderBase]: 6329/11357 cut-off events. [2025-03-17 19:42:10,943 INFO L125 PetriNetUnfolderBase]: For 4311/4329 co-relation queries the response was YES. [2025-03-17 19:42:10,966 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22912 conditions, 11357 events. 6329/11357 cut-off events. For 4311/4329 co-relation queries the response was YES. Maximal size of possible extension queue 720. Compared 94982 event pairs, 1511 based on Foata normal form. 200/9969 useless extension candidates. Maximal degree in co-relation 12154. Up to 5329 conditions per place. [2025-03-17 19:42:11,014 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 59 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2025-03-17 19:42:11,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 107 transitions, 385 flow [2025-03-17 19:42:11,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:11,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:11,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2025-03-17 19:42:11,016 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.699438202247191 [2025-03-17 19:42:11,016 INFO L175 Difference]: Start difference. First operand has 84 places, 85 transitions, 214 flow. Second operand 4 states and 249 transitions. [2025-03-17 19:42:11,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 107 transitions, 385 flow [2025-03-17 19:42:11,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 107 transitions, 377 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:42:11,041 INFO L231 Difference]: Finished difference. Result has 83 places, 84 transitions, 210 flow [2025-03-17 19:42:11,041 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=210, PETRI_PLACES=83, PETRI_TRANSITIONS=84} [2025-03-17 19:42:11,041 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 1 predicate places. [2025-03-17 19:42:11,042 INFO L471 AbstractCegarLoop]: Abstraction has has 83 places, 84 transitions, 210 flow [2025-03-17 19:42:11,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.25) internal successors, (193), 4 states have internal predecessors, (193), 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 19:42:11,042 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:11,042 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:11,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:42:11,042 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:42:11,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:11,043 INFO L85 PathProgramCache]: Analyzing trace with hash 472472062, now seen corresponding path program 1 times [2025-03-17 19:42:11,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:11,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329458777] [2025-03-17 19:42:11,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:11,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:11,048 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:42:11,052 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:42:11,052 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:11,052 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:11,104 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 19:42:11,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:11,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329458777] [2025-03-17 19:42:11,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329458777] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:11,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:11,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:11,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784488468] [2025-03-17 19:42:11,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:11,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:11,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:11,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:11,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:11,121 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 89 [2025-03-17 19:42:11,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 84 transitions, 210 flow. Second operand has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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 19:42:11,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:11,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 89 [2025-03-17 19:42:11,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:11,959 INFO L124 PetriNetUnfolderBase]: 10606/17707 cut-off events. [2025-03-17 19:42:11,959 INFO L125 PetriNetUnfolderBase]: For 6332/6637 co-relation queries the response was YES. [2025-03-17 19:42:11,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36036 conditions, 17707 events. 10606/17707 cut-off events. For 6332/6637 co-relation queries the response was YES. Maximal size of possible extension queue 1037. Compared 145746 event pairs, 3534 based on Foata normal form. 763/15456 useless extension candidates. Maximal degree in co-relation 20670. Up to 6926 conditions per place. [2025-03-17 19:42:12,032 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 90 selfloop transitions, 5 changer transitions 0/135 dead transitions. [2025-03-17 19:42:12,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 135 transitions, 556 flow [2025-03-17 19:42:12,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:12,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:12,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 272 transitions. [2025-03-17 19:42:12,034 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7640449438202247 [2025-03-17 19:42:12,034 INFO L175 Difference]: Start difference. First operand has 83 places, 84 transitions, 210 flow. Second operand 4 states and 272 transitions. [2025-03-17 19:42:12,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 135 transitions, 556 flow [2025-03-17 19:42:12,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 135 transitions, 536 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:42:12,052 INFO L231 Difference]: Finished difference. Result has 85 places, 86 transitions, 236 flow [2025-03-17 19:42:12,052 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=85, PETRI_TRANSITIONS=86} [2025-03-17 19:42:12,052 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 3 predicate places. [2025-03-17 19:42:12,053 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 86 transitions, 236 flow [2025-03-17 19:42:12,053 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.75) internal successors, (187), 4 states have internal predecessors, (187), 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 19:42:12,053 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:12,053 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:12,053 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:42:12,053 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:42:12,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:12,054 INFO L85 PathProgramCache]: Analyzing trace with hash 116222932, now seen corresponding path program 1 times [2025-03-17 19:42:12,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:12,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512410838] [2025-03-17 19:42:12,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:12,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:12,058 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:42:12,060 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:42:12,061 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:12,061 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:12,148 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 19:42:12,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:12,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512410838] [2025-03-17 19:42:12,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512410838] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:12,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:12,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:12,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973727736] [2025-03-17 19:42:12,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:12,149 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:42:12,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:12,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:42:12,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:42:12,177 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 89 [2025-03-17 19:42:12,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 86 transitions, 236 flow. Second operand has 5 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 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 19:42:12,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:12,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 89 [2025-03-17 19:42:12,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:13,040 INFO L124 PetriNetUnfolderBase]: 10732/17190 cut-off events. [2025-03-17 19:42:13,040 INFO L125 PetriNetUnfolderBase]: For 5481/6105 co-relation queries the response was YES. [2025-03-17 19:42:13,074 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37707 conditions, 17190 events. 10732/17190 cut-off events. For 5481/6105 co-relation queries the response was YES. Maximal size of possible extension queue 975. Compared 135137 event pairs, 1805 based on Foata normal form. 314/16002 useless extension candidates. Maximal degree in co-relation 21640. Up to 7845 conditions per place. [2025-03-17 19:42:13,138 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 88 selfloop transitions, 6 changer transitions 0/135 dead transitions. [2025-03-17 19:42:13,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 135 transitions, 564 flow [2025-03-17 19:42:13,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:42:13,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:42:13,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 318 transitions. [2025-03-17 19:42:13,140 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7146067415730337 [2025-03-17 19:42:13,140 INFO L175 Difference]: Start difference. First operand has 85 places, 86 transitions, 236 flow. Second operand 5 states and 318 transitions. [2025-03-17 19:42:13,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 135 transitions, 564 flow [2025-03-17 19:42:13,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 135 transitions, 564 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:42:13,176 INFO L231 Difference]: Finished difference. Result has 88 places, 85 transitions, 246 flow [2025-03-17 19:42:13,176 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=246, PETRI_PLACES=88, PETRI_TRANSITIONS=85} [2025-03-17 19:42:13,177 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 6 predicate places. [2025-03-17 19:42:13,177 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 85 transitions, 246 flow [2025-03-17 19:42:13,177 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.4) internal successors, (237), 5 states have internal predecessors, (237), 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 19:42:13,177 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:13,177 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:13,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:42:13,178 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:42:13,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:13,178 INFO L85 PathProgramCache]: Analyzing trace with hash 116223925, now seen corresponding path program 1 times [2025-03-17 19:42:13,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:13,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294624088] [2025-03-17 19:42:13,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:13,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:13,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:42:13,184 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:42:13,184 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:13,184 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:13,225 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 19:42:13,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:13,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294624088] [2025-03-17 19:42:13,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294624088] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:13,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:13,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:13,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228085135] [2025-03-17 19:42:13,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:13,226 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:13,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:13,227 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:13,227 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:13,241 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 89 [2025-03-17 19:42:13,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 85 transitions, 246 flow. Second operand has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 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 19:42:13,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:13,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 89 [2025-03-17 19:42:13,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:14,110 INFO L124 PetriNetUnfolderBase]: 8589/15306 cut-off events. [2025-03-17 19:42:14,110 INFO L125 PetriNetUnfolderBase]: For 8430/8923 co-relation queries the response was YES. [2025-03-17 19:42:14,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33282 conditions, 15306 events. 8589/15306 cut-off events. For 8430/8923 co-relation queries the response was YES. Maximal size of possible extension queue 890. Compared 132529 event pairs, 3715 based on Foata normal form. 472/14004 useless extension candidates. Maximal degree in co-relation 18932. Up to 7012 conditions per place. [2025-03-17 19:42:14,199 INFO L140 encePairwiseOnDemand]: 84/89 looper letters, 90 selfloop transitions, 4 changer transitions 0/135 dead transitions. [2025-03-17 19:42:14,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 135 transitions, 572 flow [2025-03-17 19:42:14,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:14,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:14,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2025-03-17 19:42:14,200 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7556179775280899 [2025-03-17 19:42:14,200 INFO L175 Difference]: Start difference. First operand has 88 places, 85 transitions, 246 flow. Second operand 4 states and 269 transitions. [2025-03-17 19:42:14,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 135 transitions, 572 flow [2025-03-17 19:42:14,235 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 135 transitions, 560 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:42:14,237 INFO L231 Difference]: Finished difference. Result has 87 places, 84 transitions, 236 flow [2025-03-17 19:42:14,237 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=87, PETRI_TRANSITIONS=84} [2025-03-17 19:42:14,237 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 5 predicate places. [2025-03-17 19:42:14,237 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 84 transitions, 236 flow [2025-03-17 19:42:14,237 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 46.5) internal successors, (186), 4 states have internal predecessors, (186), 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 19:42:14,237 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:14,237 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:14,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:42:14,238 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:42:14,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:14,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1761732598, now seen corresponding path program 1 times [2025-03-17 19:42:14,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:14,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297840382] [2025-03-17 19:42:14,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:14,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:14,242 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:42:14,244 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:42:14,245 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:14,245 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:14,265 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 19:42:14,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:14,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297840382] [2025-03-17 19:42:14,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297840382] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:14,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:14,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:42:14,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683908196] [2025-03-17 19:42:14,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:14,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:14,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:14,267 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:14,267 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:14,280 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 89 [2025-03-17 19:42:14,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 84 transitions, 236 flow. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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 19:42:14,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:14,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 89 [2025-03-17 19:42:14,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:15,001 INFO L124 PetriNetUnfolderBase]: 7681/14410 cut-off events. [2025-03-17 19:42:15,001 INFO L125 PetriNetUnfolderBase]: For 6720/6954 co-relation queries the response was YES. [2025-03-17 19:42:15,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30402 conditions, 14410 events. 7681/14410 cut-off events. For 6720/6954 co-relation queries the response was YES. Maximal size of possible extension queue 892. Compared 129721 event pairs, 1801 based on Foata normal form. 234/12968 useless extension candidates. Maximal degree in co-relation 17936. Up to 6391 conditions per place. [2025-03-17 19:42:15,067 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 61 selfloop transitions, 4 changer transitions 0/107 dead transitions. [2025-03-17 19:42:15,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 107 transitions, 438 flow [2025-03-17 19:42:15,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:15,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:15,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 252 transitions. [2025-03-17 19:42:15,069 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7078651685393258 [2025-03-17 19:42:15,069 INFO L175 Difference]: Start difference. First operand has 87 places, 84 transitions, 236 flow. Second operand 4 states and 252 transitions. [2025-03-17 19:42:15,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 107 transitions, 438 flow [2025-03-17 19:42:15,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 107 transitions, 427 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:42:15,114 INFO L231 Difference]: Finished difference. Result has 87 places, 83 transitions, 236 flow [2025-03-17 19:42:15,114 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=87, PETRI_TRANSITIONS=83} [2025-03-17 19:42:15,114 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 5 predicate places. [2025-03-17 19:42:15,114 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 83 transitions, 236 flow [2025-03-17 19:42:15,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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 19:42:15,115 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:15,115 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:15,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:42:15,115 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:42:15,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:15,115 INFO L85 PathProgramCache]: Analyzing trace with hash -692055856, now seen corresponding path program 1 times [2025-03-17 19:42:15,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:15,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625902517] [2025-03-17 19:42:15,115 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:15,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:15,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:42:15,121 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:42:15,121 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:15,121 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:15,186 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 19:42:15,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:15,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625902517] [2025-03-17 19:42:15,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625902517] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:15,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:15,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:42:15,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296355664] [2025-03-17 19:42:15,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:15,187 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:42:15,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:15,188 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:42:15,188 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:42:15,230 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 89 [2025-03-17 19:42:15,231 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 83 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 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 19:42:15,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:15,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 89 [2025-03-17 19:42:15,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:15,960 INFO L124 PetriNetUnfolderBase]: 10510/16692 cut-off events. [2025-03-17 19:42:15,960 INFO L125 PetriNetUnfolderBase]: For 9422/10063 co-relation queries the response was YES. [2025-03-17 19:42:15,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37669 conditions, 16692 events. 10510/16692 cut-off events. For 9422/10063 co-relation queries the response was YES. Maximal size of possible extension queue 986. Compared 129833 event pairs, 1788 based on Foata normal form. 775/15965 useless extension candidates. Maximal degree in co-relation 21310. Up to 4457 conditions per place. [2025-03-17 19:42:16,055 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 110 selfloop transitions, 9 changer transitions 0/158 dead transitions. [2025-03-17 19:42:16,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 158 transitions, 705 flow [2025-03-17 19:42:16,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:42:16,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:42:16,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 368 transitions. [2025-03-17 19:42:16,057 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6891385767790262 [2025-03-17 19:42:16,057 INFO L175 Difference]: Start difference. First operand has 87 places, 83 transitions, 236 flow. Second operand 6 states and 368 transitions. [2025-03-17 19:42:16,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 158 transitions, 705 flow [2025-03-17 19:42:16,091 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 158 transitions, 679 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:42:16,092 INFO L231 Difference]: Finished difference. Result has 89 places, 83 transitions, 253 flow [2025-03-17 19:42:16,092 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=253, PETRI_PLACES=89, PETRI_TRANSITIONS=83} [2025-03-17 19:42:16,093 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 7 predicate places. [2025-03-17 19:42:16,093 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 83 transitions, 253 flow [2025-03-17 19:42:16,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.166666666666664) internal successors, (265), 6 states have internal predecessors, (265), 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 19:42:16,093 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:16,093 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:16,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 19:42:16,094 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:42:16,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:16,094 INFO L85 PathProgramCache]: Analyzing trace with hash -535308441, now seen corresponding path program 1 times [2025-03-17 19:42:16,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:16,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858788656] [2025-03-17 19:42:16,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:16,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:16,098 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:42:16,101 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:42:16,102 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:16,102 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:16,130 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 19:42:16,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:16,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858788656] [2025-03-17 19:42:16,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858788656] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:16,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:16,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:42:16,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309521336] [2025-03-17 19:42:16,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:16,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:16,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:16,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:16,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:16,146 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 89 [2025-03-17 19:42:16,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 83 transitions, 253 flow. Second operand has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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 19:42:16,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:16,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 89 [2025-03-17 19:42:16,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:16,700 INFO L124 PetriNetUnfolderBase]: 7639/13880 cut-off events. [2025-03-17 19:42:16,701 INFO L125 PetriNetUnfolderBase]: For 11885/12988 co-relation queries the response was YES. [2025-03-17 19:42:16,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30582 conditions, 13880 events. 7639/13880 cut-off events. For 11885/12988 co-relation queries the response was YES. Maximal size of possible extension queue 842. Compared 121913 event pairs, 2522 based on Foata normal form. 1307/13070 useless extension candidates. Maximal degree in co-relation 17682. Up to 5368 conditions per place. [2025-03-17 19:42:16,771 INFO L140 encePairwiseOnDemand]: 84/89 looper letters, 66 selfloop transitions, 3 changer transitions 0/107 dead transitions. [2025-03-17 19:42:16,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 107 transitions, 494 flow [2025-03-17 19:42:16,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:16,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:16,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 249 transitions. [2025-03-17 19:42:16,772 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.699438202247191 [2025-03-17 19:42:16,772 INFO L175 Difference]: Start difference. First operand has 89 places, 83 transitions, 253 flow. Second operand 4 states and 249 transitions. [2025-03-17 19:42:16,773 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 107 transitions, 494 flow [2025-03-17 19:42:16,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 107 transitions, 472 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:42:16,788 INFO L231 Difference]: Finished difference. Result has 86 places, 81 transitions, 242 flow [2025-03-17 19:42:16,788 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=86, PETRI_TRANSITIONS=81} [2025-03-17 19:42:16,789 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 4 predicate places. [2025-03-17 19:42:16,789 INFO L471 AbstractCegarLoop]: Abstraction has has 86 places, 81 transitions, 242 flow [2025-03-17 19:42:16,789 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.0) internal successors, (196), 4 states have internal predecessors, (196), 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 19:42:16,789 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:16,789 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:16,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 19:42:16,789 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:42:16,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:16,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1220894494, now seen corresponding path program 1 times [2025-03-17 19:42:16,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:16,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087458883] [2025-03-17 19:42:16,790 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:16,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:16,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:42:16,795 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:42:16,795 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:16,795 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:16,814 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 19:42:16,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:16,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087458883] [2025-03-17 19:42:16,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087458883] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:16,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:16,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:42:16,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86058931] [2025-03-17 19:42:16,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:16,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:16,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:16,816 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:16,816 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:16,833 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 89 [2025-03-17 19:42:16,834 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 81 transitions, 242 flow. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 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 19:42:16,834 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:16,834 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 89 [2025-03-17 19:42:16,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:17,414 INFO L124 PetriNetUnfolderBase]: 7700/14096 cut-off events. [2025-03-17 19:42:17,414 INFO L125 PetriNetUnfolderBase]: For 9241/9975 co-relation queries the response was YES. [2025-03-17 19:42:17,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31231 conditions, 14096 events. 7700/14096 cut-off events. For 9241/9975 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 123479 event pairs, 1802 based on Foata normal form. 833/13576 useless extension candidates. Maximal degree in co-relation 18366. Up to 6620 conditions per place. [2025-03-17 19:42:17,467 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 64 selfloop transitions, 4 changer transitions 0/105 dead transitions. [2025-03-17 19:42:17,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 105 transitions, 457 flow [2025-03-17 19:42:17,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:17,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:17,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 248 transitions. [2025-03-17 19:42:17,469 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6966292134831461 [2025-03-17 19:42:17,469 INFO L175 Difference]: Start difference. First operand has 86 places, 81 transitions, 242 flow. Second operand 4 states and 248 transitions. [2025-03-17 19:42:17,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 105 transitions, 457 flow [2025-03-17 19:42:17,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 105 transitions, 447 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:42:17,507 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 240 flow [2025-03-17 19:42:17,507 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=240, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2025-03-17 19:42:17,507 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 3 predicate places. [2025-03-17 19:42:17,508 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 240 flow [2025-03-17 19:42:17,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 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 19:42:17,508 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:17,508 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:17,508 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 19:42:17,508 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:42:17,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:17,508 INFO L85 PathProgramCache]: Analyzing trace with hash 939794427, now seen corresponding path program 1 times [2025-03-17 19:42:17,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:17,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112289968] [2025-03-17 19:42:17,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:17,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:17,512 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:42:17,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:42:17,514 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:17,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:17,548 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 19:42:17,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:17,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112289968] [2025-03-17 19:42:17,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112289968] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:17,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:17,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:42:17,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391144629] [2025-03-17 19:42:17,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:17,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:42:17,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:17,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:42:17,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:42:17,571 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 89 [2025-03-17 19:42:17,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 240 flow. Second operand has 5 states, 5 states have (on average 44.6) internal successors, (223), 5 states have internal predecessors, (223), 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 19:42:17,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:17,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 89 [2025-03-17 19:42:17,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:18,324 INFO L124 PetriNetUnfolderBase]: 10447/16413 cut-off events. [2025-03-17 19:42:18,324 INFO L125 PetriNetUnfolderBase]: For 9946/10254 co-relation queries the response was YES. [2025-03-17 19:42:18,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38724 conditions, 16413 events. 10447/16413 cut-off events. For 9946/10254 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 125065 event pairs, 3698 based on Foata normal form. 530/15535 useless extension candidates. Maximal degree in co-relation 22833. Up to 7234 conditions per place. [2025-03-17 19:42:18,414 INFO L140 encePairwiseOnDemand]: 82/89 looper letters, 139 selfloop transitions, 8 changer transitions 0/181 dead transitions. [2025-03-17 19:42:18,414 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 181 transitions, 844 flow [2025-03-17 19:42:18,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:42:18,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:42:18,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 396 transitions. [2025-03-17 19:42:18,415 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7415730337078652 [2025-03-17 19:42:18,415 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 240 flow. Second operand 6 states and 396 transitions. [2025-03-17 19:42:18,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 181 transitions, 844 flow [2025-03-17 19:42:18,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 181 transitions, 807 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-03-17 19:42:18,495 INFO L231 Difference]: Finished difference. Result has 87 places, 81 transitions, 256 flow [2025-03-17 19:42:18,495 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=87, PETRI_TRANSITIONS=81} [2025-03-17 19:42:18,495 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 5 predicate places. [2025-03-17 19:42:18,495 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 81 transitions, 256 flow [2025-03-17 19:42:18,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.6) internal successors, (223), 5 states have internal predecessors, (223), 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 19:42:18,495 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:18,496 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:18,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 19:42:18,496 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:42:18,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:18,496 INFO L85 PathProgramCache]: Analyzing trace with hash 585308102, now seen corresponding path program 1 times [2025-03-17 19:42:18,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:18,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58443582] [2025-03-17 19:42:18,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:18,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:18,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:42:18,503 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:42:18,503 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:18,503 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:18,532 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 19:42:18,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:18,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58443582] [2025-03-17 19:42:18,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58443582] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:18,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:18,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:42:18,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778161543] [2025-03-17 19:42:18,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:18,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:18,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:18,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:18,533 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:18,543 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 89 [2025-03-17 19:42:18,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 81 transitions, 256 flow. Second operand has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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 19:42:18,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:18,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 89 [2025-03-17 19:42:18,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:19,062 INFO L124 PetriNetUnfolderBase]: 6203/11963 cut-off events. [2025-03-17 19:42:19,062 INFO L125 PetriNetUnfolderBase]: For 10905/11508 co-relation queries the response was YES. [2025-03-17 19:42:19,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25691 conditions, 11963 events. 6203/11963 cut-off events. For 10905/11508 co-relation queries the response was YES. Maximal size of possible extension queue 733. Compared 108264 event pairs, 2522 based on Foata normal form. 603/10939 useless extension candidates. Maximal degree in co-relation 17534. Up to 4725 conditions per place. [2025-03-17 19:42:19,124 INFO L140 encePairwiseOnDemand]: 85/89 looper letters, 66 selfloop transitions, 3 changer transitions 0/107 dead transitions. [2025-03-17 19:42:19,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 107 transitions, 507 flow [2025-03-17 19:42:19,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:19,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:19,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 250 transitions. [2025-03-17 19:42:19,125 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.702247191011236 [2025-03-17 19:42:19,126 INFO L175 Difference]: Start difference. First operand has 87 places, 81 transitions, 256 flow. Second operand 4 states and 250 transitions. [2025-03-17 19:42:19,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 107 transitions, 507 flow [2025-03-17 19:42:19,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 107 transitions, 479 flow, removed 6 selfloop flow, removed 4 redundant places. [2025-03-17 19:42:19,136 INFO L231 Difference]: Finished difference. Result has 85 places, 80 transitions, 244 flow [2025-03-17 19:42:19,136 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=85, PETRI_TRANSITIONS=80} [2025-03-17 19:42:19,136 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 3 predicate places. [2025-03-17 19:42:19,136 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 80 transitions, 244 flow [2025-03-17 19:42:19,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 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 19:42:19,137 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:19,137 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:19,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 19:42:19,137 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:42:19,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:19,137 INFO L85 PathProgramCache]: Analyzing trace with hash 806975928, now seen corresponding path program 1 times [2025-03-17 19:42:19,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:19,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789838571] [2025-03-17 19:42:19,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:19,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:19,140 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:42:19,142 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:42:19,142 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:19,142 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:19,181 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 19:42:19,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:19,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789838571] [2025-03-17 19:42:19,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789838571] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:19,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:19,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:19,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196079710] [2025-03-17 19:42:19,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:19,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:42:19,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:19,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:42:19,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:42:19,198 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 89 [2025-03-17 19:42:19,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 80 transitions, 244 flow. Second operand has 5 states, 5 states have (on average 47.8) internal successors, (239), 5 states have internal predecessors, (239), 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 19:42:19,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:19,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 89 [2025-03-17 19:42:19,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:20,022 INFO L124 PetriNetUnfolderBase]: 10857/16816 cut-off events. [2025-03-17 19:42:20,022 INFO L125 PetriNetUnfolderBase]: For 12130/13004 co-relation queries the response was YES. [2025-03-17 19:42:20,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39606 conditions, 16816 events. 10857/16816 cut-off events. For 12130/13004 co-relation queries the response was YES. Maximal size of possible extension queue 943. Compared 125162 event pairs, 1730 based on Foata normal form. 874/16715 useless extension candidates. Maximal degree in co-relation 26893. Up to 8077 conditions per place. [2025-03-17 19:42:20,105 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 92 selfloop transitions, 6 changer transitions 0/131 dead transitions. [2025-03-17 19:42:20,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 131 transitions, 614 flow [2025-03-17 19:42:20,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:42:20,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:42:20,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 316 transitions. [2025-03-17 19:42:20,106 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7101123595505618 [2025-03-17 19:42:20,106 INFO L175 Difference]: Start difference. First operand has 85 places, 80 transitions, 244 flow. Second operand 5 states and 316 transitions. [2025-03-17 19:42:20,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 131 transitions, 614 flow [2025-03-17 19:42:20,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 131 transitions, 600 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:42:20,144 INFO L231 Difference]: Finished difference. Result has 85 places, 79 transitions, 248 flow [2025-03-17 19:42:20,144 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=248, PETRI_PLACES=85, PETRI_TRANSITIONS=79} [2025-03-17 19:42:20,145 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 3 predicate places. [2025-03-17 19:42:20,145 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 79 transitions, 248 flow [2025-03-17 19:42:20,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.8) internal successors, (239), 5 states have internal predecessors, (239), 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 19:42:20,145 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:20,145 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:20,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 19:42:20,145 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:42:20,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:20,145 INFO L85 PathProgramCache]: Analyzing trace with hash 806976921, now seen corresponding path program 1 times [2025-03-17 19:42:20,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:20,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101471189] [2025-03-17 19:42:20,146 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:20,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:20,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:42:20,151 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:42:20,151 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:20,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:20,171 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 19:42:20,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:20,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101471189] [2025-03-17 19:42:20,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101471189] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:20,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:20,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:20,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783627876] [2025-03-17 19:42:20,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:20,172 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:20,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:20,172 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:20,172 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:20,190 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 89 [2025-03-17 19:42:20,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 79 transitions, 248 flow. Second operand has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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 19:42:20,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:20,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 89 [2025-03-17 19:42:20,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:20,864 INFO L124 PetriNetUnfolderBase]: 8650/14649 cut-off events. [2025-03-17 19:42:20,864 INFO L125 PetriNetUnfolderBase]: For 13200/13872 co-relation queries the response was YES. [2025-03-17 19:42:20,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33810 conditions, 14649 events. 8650/14649 cut-off events. For 13200/13872 co-relation queries the response was YES. Maximal size of possible extension queue 851. Compared 119678 event pairs, 3696 based on Foata normal form. 901/14169 useless extension candidates. Maximal degree in co-relation 22958. Up to 6972 conditions per place. [2025-03-17 19:42:20,939 INFO L140 encePairwiseOnDemand]: 84/89 looper letters, 94 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2025-03-17 19:42:20,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 131 transitions, 608 flow [2025-03-17 19:42:20,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:20,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:20,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 267 transitions. [2025-03-17 19:42:20,941 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.75 [2025-03-17 19:42:20,941 INFO L175 Difference]: Start difference. First operand has 85 places, 79 transitions, 248 flow. Second operand 4 states and 267 transitions. [2025-03-17 19:42:20,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 131 transitions, 608 flow [2025-03-17 19:42:20,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 131 transitions, 596 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:42:20,974 INFO L231 Difference]: Finished difference. Result has 84 places, 78 transitions, 238 flow [2025-03-17 19:42:20,974 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=84, PETRI_TRANSITIONS=78} [2025-03-17 19:42:20,975 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 2 predicate places. [2025-03-17 19:42:20,975 INFO L471 AbstractCegarLoop]: Abstraction has has 84 places, 78 transitions, 238 flow [2025-03-17 19:42:20,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.0) internal successors, (188), 4 states have internal predecessors, (188), 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 19:42:20,975 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:20,975 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:20,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 19:42:20,975 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:42:20,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:20,975 INFO L85 PathProgramCache]: Analyzing trace with hash -753549435, now seen corresponding path program 1 times [2025-03-17 19:42:20,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:20,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227990917] [2025-03-17 19:42:20,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:20,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:20,979 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:42:20,981 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:42:20,981 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:20,981 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:21,043 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 19:42:21,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:21,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227990917] [2025-03-17 19:42:21,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227990917] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:21,043 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:21,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:42:21,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627006396] [2025-03-17 19:42:21,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:21,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:42:21,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:21,044 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:42:21,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:42:21,065 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 89 [2025-03-17 19:42:21,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 78 transitions, 238 flow. Second operand has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 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 19:42:21,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:21,069 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 89 [2025-03-17 19:42:21,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:21,807 INFO L124 PetriNetUnfolderBase]: 10628/16304 cut-off events. [2025-03-17 19:42:21,807 INFO L125 PetriNetUnfolderBase]: For 13435/14327 co-relation queries the response was YES. [2025-03-17 19:42:21,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38493 conditions, 16304 events. 10628/16304 cut-off events. For 13435/14327 co-relation queries the response was YES. Maximal size of possible extension queue 948. Compared 119598 event pairs, 1712 based on Foata normal form. 1350/16364 useless extension candidates. Maximal degree in co-relation 26049. Up to 4589 conditions per place. [2025-03-17 19:42:21,880 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 115 selfloop transitions, 9 changer transitions 0/156 dead transitions. [2025-03-17 19:42:21,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 156 transitions, 738 flow [2025-03-17 19:42:21,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:42:21,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:42:21,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 365 transitions. [2025-03-17 19:42:21,882 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6835205992509363 [2025-03-17 19:42:21,882 INFO L175 Difference]: Start difference. First operand has 84 places, 78 transitions, 238 flow. Second operand 6 states and 365 transitions. [2025-03-17 19:42:21,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 156 transitions, 738 flow [2025-03-17 19:42:21,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 156 transitions, 732 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:42:21,912 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 257 flow [2025-03-17 19:42:21,912 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=257, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2025-03-17 19:42:21,913 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 5 predicate places. [2025-03-17 19:42:21,913 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 257 flow [2025-03-17 19:42:21,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.5) internal successors, (267), 6 states have internal predecessors, (267), 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 19:42:21,913 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:21,913 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:21,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 19:42:21,913 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:42:21,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:21,914 INFO L85 PathProgramCache]: Analyzing trace with hash -160564087, now seen corresponding path program 1 times [2025-03-17 19:42:21,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:21,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997729248] [2025-03-17 19:42:21,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:21,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:21,917 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:42:21,919 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:42:21,919 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:21,919 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:21,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:42:21,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:21,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997729248] [2025-03-17 19:42:21,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997729248] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:21,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:21,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:21,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648661428] [2025-03-17 19:42:21,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:21,940 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:21,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:21,940 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:21,940 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:21,952 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 89 [2025-03-17 19:42:21,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 257 flow. Second operand has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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 19:42:21,953 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:21,953 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 89 [2025-03-17 19:42:21,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:22,723 INFO L124 PetriNetUnfolderBase]: 10776/18733 cut-off events. [2025-03-17 19:42:22,723 INFO L125 PetriNetUnfolderBase]: For 23169/24914 co-relation queries the response was YES. [2025-03-17 19:42:22,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43661 conditions, 18733 events. 10776/18733 cut-off events. For 23169/24914 co-relation queries the response was YES. Maximal size of possible extension queue 1042. Compared 162665 event pairs, 4871 based on Foata normal form. 1607/18196 useless extension candidates. Maximal degree in co-relation 29959. Up to 8895 conditions per place. [2025-03-17 19:42:22,838 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 101 selfloop transitions, 5 changer transitions 0/138 dead transitions. [2025-03-17 19:42:22,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 138 transitions, 721 flow [2025-03-17 19:42:22,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:22,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:22,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 266 transitions. [2025-03-17 19:42:22,839 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7471910112359551 [2025-03-17 19:42:22,839 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 257 flow. Second operand 4 states and 266 transitions. [2025-03-17 19:42:22,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 138 transitions, 721 flow [2025-03-17 19:42:22,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 138 transitions, 690 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:42:22,858 INFO L231 Difference]: Finished difference. Result has 88 places, 80 transitions, 271 flow [2025-03-17 19:42:22,858 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=88, PETRI_TRANSITIONS=80} [2025-03-17 19:42:22,858 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 6 predicate places. [2025-03-17 19:42:22,858 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 80 transitions, 271 flow [2025-03-17 19:42:22,858 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.5) internal successors, (190), 4 states have internal predecessors, (190), 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 19:42:22,858 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:22,858 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:22,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 19:42:22,858 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:42:22,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:22,859 INFO L85 PathProgramCache]: Analyzing trace with hash -160565080, now seen corresponding path program 1 times [2025-03-17 19:42:22,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:22,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176457910] [2025-03-17 19:42:22,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:22,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:22,862 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:42:22,864 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:42:22,864 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:22,864 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:22,900 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 19:42:22,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:22,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176457910] [2025-03-17 19:42:22,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176457910] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:22,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:22,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:22,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070261318] [2025-03-17 19:42:22,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:22,901 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:42:22,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:22,902 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:42:22,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:42:22,922 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 89 [2025-03-17 19:42:22,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 80 transitions, 271 flow. Second operand has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 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 19:42:22,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:22,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 89 [2025-03-17 19:42:22,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:23,759 INFO L124 PetriNetUnfolderBase]: 12930/20234 cut-off events. [2025-03-17 19:42:23,759 INFO L125 PetriNetUnfolderBase]: For 23571/25877 co-relation queries the response was YES. [2025-03-17 19:42:23,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50956 conditions, 20234 events. 12930/20234 cut-off events. For 23571/25877 co-relation queries the response was YES. Maximal size of possible extension queue 1091. Compared 156362 event pairs, 2539 based on Foata normal form. 2053/21280 useless extension candidates. Maximal degree in co-relation 34968. Up to 9256 conditions per place. [2025-03-17 19:42:23,897 INFO L140 encePairwiseOnDemand]: 83/89 looper letters, 100 selfloop transitions, 6 changer transitions 0/136 dead transitions. [2025-03-17 19:42:23,897 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 136 transitions, 709 flow [2025-03-17 19:42:23,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:42:23,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:42:23,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 314 transitions. [2025-03-17 19:42:23,898 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7056179775280899 [2025-03-17 19:42:23,899 INFO L175 Difference]: Start difference. First operand has 88 places, 80 transitions, 271 flow. Second operand 5 states and 314 transitions. [2025-03-17 19:42:23,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 136 transitions, 709 flow [2025-03-17 19:42:23,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 136 transitions, 706 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:42:23,968 INFO L231 Difference]: Finished difference. Result has 91 places, 80 transitions, 285 flow [2025-03-17 19:42:23,969 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=285, PETRI_PLACES=91, PETRI_TRANSITIONS=80} [2025-03-17 19:42:23,969 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 9 predicate places. [2025-03-17 19:42:23,969 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 80 transitions, 285 flow [2025-03-17 19:42:23,969 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.2) internal successors, (241), 5 states have internal predecessors, (241), 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 19:42:23,969 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:23,969 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:23,969 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-17 19:42:23,969 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:42:23,970 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:23,970 INFO L85 PathProgramCache]: Analyzing trace with hash -966506497, now seen corresponding path program 1 times [2025-03-17 19:42:23,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:23,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834403787] [2025-03-17 19:42:23,970 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:23,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:23,973 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:42:23,977 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:42:23,977 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:23,977 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:24,000 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 19:42:24,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:24,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834403787] [2025-03-17 19:42:24,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834403787] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:24,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:24,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:42:24,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031110834] [2025-03-17 19:42:24,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:24,002 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:42:24,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:24,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:42:24,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:42:24,015 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 45 out of 89 [2025-03-17 19:42:24,015 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 80 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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 19:42:24,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:24,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 45 of 89 [2025-03-17 19:42:24,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:24,931 INFO L124 PetriNetUnfolderBase]: 13070/20439 cut-off events. [2025-03-17 19:42:24,931 INFO L125 PetriNetUnfolderBase]: For 27102/28649 co-relation queries the response was YES. [2025-03-17 19:42:24,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53281 conditions, 20439 events. 13070/20439 cut-off events. For 27102/28649 co-relation queries the response was YES. Maximal size of possible extension queue 1110. Compared 158113 event pairs, 4595 based on Foata normal form. 1776/21158 useless extension candidates. Maximal degree in co-relation 36479. Up to 8902 conditions per place. [2025-03-17 19:42:25,045 INFO L140 encePairwiseOnDemand]: 84/89 looper letters, 102 selfloop transitions, 5 changer transitions 0/138 dead transitions. [2025-03-17 19:42:25,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 138 transitions, 734 flow [2025-03-17 19:42:25,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:42:25,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:42:25,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 265 transitions. [2025-03-17 19:42:25,046 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7443820224719101 [2025-03-17 19:42:25,046 INFO L175 Difference]: Start difference. First operand has 91 places, 80 transitions, 285 flow. Second operand 4 states and 265 transitions. [2025-03-17 19:42:25,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 138 transitions, 734 flow [2025-03-17 19:42:25,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 138 transitions, 710 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:42:25,073 INFO L231 Difference]: Finished difference. Result has 90 places, 80 transitions, 286 flow [2025-03-17 19:42:25,073 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=267, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=286, PETRI_PLACES=90, PETRI_TRANSITIONS=80} [2025-03-17 19:42:25,073 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 8 predicate places. [2025-03-17 19:42:25,073 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 80 transitions, 286 flow [2025-03-17 19:42:25,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 47.25) internal successors, (189), 4 states have internal predecessors, (189), 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 19:42:25,073 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:25,074 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:25,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-17 19:42:25,074 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:42:25,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:25,074 INFO L85 PathProgramCache]: Analyzing trace with hash -682549586, now seen corresponding path program 1 times [2025-03-17 19:42:25,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:25,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720136698] [2025-03-17 19:42:25,074 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:25,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:25,078 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:42:25,080 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:42:25,080 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:25,080 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:25,130 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 19:42:25,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:25,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720136698] [2025-03-17 19:42:25,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720136698] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:25,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:25,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:42:25,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830912713] [2025-03-17 19:42:25,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:25,131 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:42:25,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:25,131 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:42:25,131 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:42:25,151 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 89 [2025-03-17 19:42:25,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 80 transitions, 286 flow. Second operand has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 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 19:42:25,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:25,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 89 [2025-03-17 19:42:25,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:26,167 INFO L124 PetriNetUnfolderBase]: 14023/21624 cut-off events. [2025-03-17 19:42:26,167 INFO L125 PetriNetUnfolderBase]: For 32671/34826 co-relation queries the response was YES. [2025-03-17 19:42:26,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58004 conditions, 21624 events. 14023/21624 cut-off events. For 32671/34826 co-relation queries the response was YES. Maximal size of possible extension queue 1176. Compared 164869 event pairs, 2778 based on Foata normal form. 2709/23244 useless extension candidates. Maximal degree in co-relation 45336. Up to 5557 conditions per place. [2025-03-17 19:42:26,284 INFO L140 encePairwiseOnDemand]: 81/89 looper letters, 129 selfloop transitions, 9 changer transitions 0/167 dead transitions. [2025-03-17 19:42:26,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 167 transitions, 940 flow [2025-03-17 19:42:26,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:42:26,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:42:26,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 362 transitions. [2025-03-17 19:42:26,285 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6779026217228464 [2025-03-17 19:42:26,285 INFO L175 Difference]: Start difference. First operand has 90 places, 80 transitions, 286 flow. Second operand 6 states and 362 transitions. [2025-03-17 19:42:26,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 167 transitions, 940 flow [2025-03-17 19:42:26,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 167 transitions, 924 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:42:26,363 INFO L231 Difference]: Finished difference. Result has 94 places, 80 transitions, 307 flow [2025-03-17 19:42:26,364 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=307, PETRI_PLACES=94, PETRI_TRANSITIONS=80} [2025-03-17 19:42:26,364 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 12 predicate places. [2025-03-17 19:42:26,364 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 80 transitions, 307 flow [2025-03-17 19:42:26,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 44.833333333333336) internal successors, (269), 6 states have internal predecessors, (269), 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 19:42:26,364 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:42:26,364 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:26,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-17 19:42:26,364 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:42:26,365 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:42:26,365 INFO L85 PathProgramCache]: Analyzing trace with hash 1234488847, now seen corresponding path program 1 times [2025-03-17 19:42:26,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:42:26,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951685394] [2025-03-17 19:42:26,365 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:42:26,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:42:26,368 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:42:26,371 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:42:26,371 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:42:26,371 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:42:26,404 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 19:42:26,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:42:26,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951685394] [2025-03-17 19:42:26,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951685394] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:42:26,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:42:26,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:42:26,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730622643] [2025-03-17 19:42:26,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:42:26,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:42:26,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:42:26,406 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:42:26,406 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:42:26,428 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 43 out of 89 [2025-03-17 19:42:26,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 80 transitions, 307 flow. Second operand has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 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 19:42:26,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:42:26,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 43 of 89 [2025-03-17 19:42:26,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:42:27,605 INFO L124 PetriNetUnfolderBase]: 13746/20688 cut-off events. [2025-03-17 19:42:27,605 INFO L125 PetriNetUnfolderBase]: For 31184/33298 co-relation queries the response was YES. [2025-03-17 19:42:27,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58475 conditions, 20688 events. 13746/20688 cut-off events. For 31184/33298 co-relation queries the response was YES. Maximal size of possible extension queue 1139. Compared 152860 event pairs, 5330 based on Foata normal form. 2391/22498 useless extension candidates. Maximal degree in co-relation 45843. Up to 9937 conditions per place. [2025-03-17 19:42:27,664 INFO L140 encePairwiseOnDemand]: 82/89 looper letters, 0 selfloop transitions, 0 changer transitions 196/196 dead transitions. [2025-03-17 19:42:27,664 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 196 transitions, 1129 flow [2025-03-17 19:42:27,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:42:27,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:42:27,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 388 transitions. [2025-03-17 19:42:27,666 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7265917602996255 [2025-03-17 19:42:27,666 INFO L175 Difference]: Start difference. First operand has 94 places, 80 transitions, 307 flow. Second operand 6 states and 388 transitions. [2025-03-17 19:42:27,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 196 transitions, 1129 flow [2025-03-17 19:42:27,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 196 transitions, 1111 flow, removed 1 selfloop flow, removed 5 redundant places. [2025-03-17 19:42:27,767 INFO L231 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2025-03-17 19:42:27,767 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=89, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2025-03-17 19:42:27,767 INFO L279 CegarLoopForPetriNet]: 82 programPoint places, 11 predicate places. [2025-03-17 19:42:27,767 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2025-03-17 19:42:27,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 45.4) internal successors, (227), 5 states have internal predecessors, (227), 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 19:42:27,770 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 39 remaining) [2025-03-17 19:42:27,770 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2025-03-17 19:42:27,770 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2025-03-17 19:42:27,770 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2025-03-17 19:42:27,770 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2025-03-17 19:42:27,770 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2025-03-17 19:42:27,770 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2025-03-17 19:42:27,770 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2025-03-17 19:42:27,770 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2025-03-17 19:42:27,770 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2025-03-17 19:42:27,770 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2025-03-17 19:42:27,770 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2025-03-17 19:42:27,770 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2025-03-17 19:42:27,770 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2025-03-17 19:42:27,770 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2025-03-17 19:42:27,770 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2025-03-17 19:42:27,770 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2025-03-17 19:42:27,770 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2025-03-17 19:42:27,770 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 39 remaining) [2025-03-17 19:42:27,770 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 39 remaining) [2025-03-17 19:42:27,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 39 remaining) [2025-03-17 19:42:27,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 39 remaining) [2025-03-17 19:42:27,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 39 remaining) [2025-03-17 19:42:27,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2025-03-17 19:42:27,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2025-03-17 19:42:27,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2025-03-17 19:42:27,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2025-03-17 19:42:27,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2025-03-17 19:42:27,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2025-03-17 19:42:27,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2025-03-17 19:42:27,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2025-03-17 19:42:27,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2025-03-17 19:42:27,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2025-03-17 19:42:27,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2025-03-17 19:42:27,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2025-03-17 19:42:27,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2025-03-17 19:42:27,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2025-03-17 19:42:27,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2025-03-17 19:42:27,771 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2025-03-17 19:42:27,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-17 19:42:27,771 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:42:27,775 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 19:42:27,775 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 19:42:27,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 07:42:27 BasicIcfg [2025-03-17 19:42:27,779 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 19:42:27,779 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 19:42:27,779 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 19:42:27,779 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 19:42:27,780 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:42:07" (3/4) ... [2025-03-17 19:42:27,781 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-17 19:42:27,783 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-17 19:42:27,783 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-17 19:42:27,783 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2025-03-17 19:42:27,786 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 56 nodes and edges [2025-03-17 19:42:27,786 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2025-03-17 19:42:27,786 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2025-03-17 19:42:27,786 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-17 19:42:27,841 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 19:42:27,841 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 19:42:27,841 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 19:42:27,842 INFO L158 Benchmark]: Toolchain (without parser) took 21186.47ms. Allocated memory was 167.8MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 122.5MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 502.7MB. Max. memory is 16.1GB. [2025-03-17 19:42:27,843 INFO L158 Benchmark]: CDTParser took 1.01ms. Allocated memory is still 201.3MB. Free memory is still 119.8MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:42:27,843 INFO L158 Benchmark]: CACSL2BoogieTranslator took 178.87ms. Allocated memory is still 167.8MB. Free memory was 122.0MB in the beginning and 110.8MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:42:27,843 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.88ms. Allocated memory is still 167.8MB. Free memory was 110.4MB in the beginning and 108.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:42:27,844 INFO L158 Benchmark]: Boogie Preprocessor took 43.99ms. Allocated memory is still 167.8MB. Free memory was 108.8MB in the beginning and 107.0MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:42:27,845 INFO L158 Benchmark]: IcfgBuilder took 597.90ms. Allocated memory is still 167.8MB. Free memory was 107.0MB in the beginning and 61.5MB in the end (delta: 45.5MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-03-17 19:42:27,845 INFO L158 Benchmark]: TraceAbstraction took 20257.39ms. Allocated memory was 167.8MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 60.6MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. [2025-03-17 19:42:27,845 INFO L158 Benchmark]: Witness Printer took 62.29ms. Allocated memory is still 2.4GB. Free memory was 1.8GB in the beginning and 1.8GB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:42:27,846 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.01ms. Allocated memory is still 201.3MB. Free memory is still 119.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 178.87ms. Allocated memory is still 167.8MB. Free memory was 122.0MB in the beginning and 110.8MB in the end (delta: 11.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.88ms. Allocated memory is still 167.8MB. Free memory was 110.4MB in the beginning and 108.8MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 43.99ms. Allocated memory is still 167.8MB. Free memory was 108.8MB in the beginning and 107.0MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * IcfgBuilder took 597.90ms. Allocated memory is still 167.8MB. Free memory was 107.0MB in the beginning and 61.5MB in the end (delta: 45.5MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 20257.39ms. Allocated memory was 167.8MB in the beginning and 2.4GB in the end (delta: 2.2GB). Free memory was 60.6MB in the beginning and 1.8GB in the end (delta: -1.7GB). Peak memory consumption was 1.2GB. Max. memory is 16.1GB. * Witness Printer took 62.29ms. Allocated memory is still 2.4GB. Free memory was 1.8GB in the beginning and 1.8GB 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: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: 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, 147 locations, 170 edges, 39 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: 20.2s, OverallIterations: 20, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 18.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1979 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1694 mSDsluCounter, 180 SdHoareTripleChecker+Invalid, 1.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 83 mSDsCounter, 99 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3998 IncrementalHoareTripleChecker+Invalid, 4097 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 99 mSolverCounterUnsat, 97 mSDtfsCounter, 3998 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 84 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=307occurred in iteration=19, InterpolantAutomatonStates: 93, 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, 230 NumberOfCodeBlocks, 230 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 210 ConstructedInterpolants, 0 QuantifiedInterpolants, 705 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 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 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-17 19:42:27,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE