./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c00e63dc Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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 408d8d7e58240f749ab11087191b04ec647cfea8447827b0505b793eb68a9c0a --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-06 18:48:17,659 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-06 18:48:17,716 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-02-06 18:48:17,721 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-06 18:48:17,721 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-06 18:48:17,738 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-06 18:48:17,739 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-06 18:48:17,739 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-06 18:48:17,739 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-06 18:48:17,739 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-06 18:48:17,740 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-06 18:48:17,740 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-06 18:48:17,740 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-06 18:48:17,740 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-06 18:48:17,741 INFO L153 SettingsManager]: * Use SBE=true [2025-02-06 18:48:17,741 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-06 18:48:17,741 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-06 18:48:17,741 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-06 18:48:17,741 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-06 18:48:17,741 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-06 18:48:17,741 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-06 18:48:17,741 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-06 18:48:17,741 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-06 18:48:17,742 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-06 18:48:17,742 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-02-06 18:48:17,742 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-02-06 18:48:17,742 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-06 18:48:17,742 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-06 18:48:17,742 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-06 18:48:17,742 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-06 18:48:17,743 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-06 18:48:17,743 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-06 18:48:17,743 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-06 18:48:17,743 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-06 18:48:17,743 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:48:17,743 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-06 18:48:17,743 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-06 18:48:17,743 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-06 18:48:17,744 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-06 18:48:17,744 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-06 18:48:17,744 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-06 18:48:17,744 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-06 18:48:17,744 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-06 18:48:17,744 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-06 18:48:17,744 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-06 18:48:17,744 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-jdk21/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 -> 408d8d7e58240f749ab11087191b04ec647cfea8447827b0505b793eb68a9c0a [2025-02-06 18:48:17,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-06 18:48:17,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-06 18:48:17,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-06 18:48:17,948 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-06 18:48:17,949 INFO L274 PluginConnector]: CDTParser initialized [2025-02-06 18:48:17,951 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2025-02-06 18:48:19,115 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/997d945a9/c210a5ae32a74e2f88d3d201714ef15e/FLAG7ddbe52f7 [2025-02-06 18:48:19,307 INFO L384 CDTParser]: Found 1 translation units. [2025-02-06 18:48:19,308 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2025-02-06 18:48:19,313 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/997d945a9/c210a5ae32a74e2f88d3d201714ef15e/FLAG7ddbe52f7 [2025-02-06 18:48:19,677 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/997d945a9/c210a5ae32a74e2f88d3d201714ef15e [2025-02-06 18:48:19,679 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-06 18:48:19,680 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-06 18:48:19,681 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-06 18:48:19,681 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-06 18:48:19,683 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-06 18:48:19,684 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:48:19" (1/1) ... [2025-02-06 18:48:19,684 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f13129e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:48:19, skipping insertion in model container [2025-02-06 18:48:19,685 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.02 06:48:19" (1/1) ... [2025-02-06 18:48:19,695 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-06 18:48:19,813 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:48:19,823 INFO L200 MainTranslator]: Completed pre-run [2025-02-06 18:48:19,848 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-06 18:48:19,858 INFO L204 MainTranslator]: Completed translation [2025-02-06 18:48:19,859 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:48:19 WrapperNode [2025-02-06 18:48:19,859 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-06 18:48:19,860 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-06 18:48:19,861 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-06 18:48:19,861 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-06 18:48:19,866 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:48:19" (1/1) ... [2025-02-06 18:48:19,873 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:48:19" (1/1) ... [2025-02-06 18:48:19,896 INFO L138 Inliner]: procedures = 22, calls = 16, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 236 [2025-02-06 18:48:19,900 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-06 18:48:19,900 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-06 18:48:19,900 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-06 18:48:19,900 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-06 18:48:19,907 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:48:19" (1/1) ... [2025-02-06 18:48:19,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:48:19" (1/1) ... [2025-02-06 18:48:19,913 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:48:19" (1/1) ... [2025-02-06 18:48:19,927 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]. [2025-02-06 18:48:19,929 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:48:19" (1/1) ... [2025-02-06 18:48:19,930 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:48:19" (1/1) ... [2025-02-06 18:48:19,936 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:48:19" (1/1) ... [2025-02-06 18:48:19,938 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:48:19" (1/1) ... [2025-02-06 18:48:19,939 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:48:19" (1/1) ... [2025-02-06 18:48:19,942 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:48:19" (1/1) ... [2025-02-06 18:48:19,943 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-06 18:48:19,944 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-06 18:48:19,946 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-06 18:48:19,949 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-06 18:48:19,950 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:48:19" (1/1) ... [2025-02-06 18:48:19,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-06 18:48:19,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-06 18:48:19,971 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-06 18:48:19,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-06 18:48:19,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-06 18:48:19,987 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-02-06 18:48:19,987 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-02-06 18:48:19,988 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-02-06 18:48:19,988 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-02-06 18:48:19,988 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-02-06 18:48:19,988 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-02-06 18:48:19,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-06 18:48:19,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-06 18:48:19,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-06 18:48:19,989 WARN L227 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-02-06 18:48:20,060 INFO L257 CfgBuilder]: Building ICFG [2025-02-06 18:48:20,062 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-06 18:48:20,340 INFO L304 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-02-06 18:48:20,340 INFO L308 CfgBuilder]: Performing block encoding [2025-02-06 18:48:20,497 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-06 18:48:20,497 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-06 18:48:20,498 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:48:20 BoogieIcfgContainer [2025-02-06 18:48:20,498 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-06 18:48:20,500 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-06 18:48:20,500 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-06 18:48:20,503 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-06 18:48:20,503 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.02 06:48:19" (1/3) ... [2025-02-06 18:48:20,504 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611493e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:48:20, skipping insertion in model container [2025-02-06 18:48:20,504 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.02 06:48:19" (2/3) ... [2025-02-06 18:48:20,505 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611493e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.02 06:48:20, skipping insertion in model container [2025-02-06 18:48:20,505 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 06.02 06:48:20" (3/3) ... [2025-02-06 18:48:20,505 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-file-item-trans.wvr.c [2025-02-06 18:48:20,516 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-06 18:48:20,517 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-file-item-trans.wvr.c that has 4 procedures, 90 locations, 1 initial locations, 0 loop locations, and 18 error locations. [2025-02-06 18:48:20,517 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-02-06 18:48:20,591 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-02-06 18:48:20,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 107 transitions, 235 flow [2025-02-06 18:48:20,671 INFO L124 PetriNetUnfolderBase]: 18/104 cut-off events. [2025-02-06 18:48:20,672 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-02-06 18:48:20,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 104 events. 18/104 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 388 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2025-02-06 18:48:20,685 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 107 transitions, 235 flow [2025-02-06 18:48:20,688 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 102 transitions, 219 flow [2025-02-06 18:48:20,702 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-06 18:48:20,717 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;@5f93a86f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-06 18:48:20,719 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2025-02-06 18:48:20,736 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-02-06 18:48:20,736 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2025-02-06 18:48:20,736 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-02-06 18:48:20,736 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:20,736 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:20,737 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:48:20,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:20,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1008643709, now seen corresponding path program 1 times [2025-02-06 18:48:20,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:20,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043518658] [2025-02-06 18:48:20,756 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:20,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:20,820 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-06 18:48:20,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-06 18:48:20,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:20,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:20,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:48:20,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:20,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043518658] [2025-02-06 18:48:20,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043518658] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:48:20,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:48:20,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:48:20,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662129241] [2025-02-06 18:48:20,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:48:20,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:48:20,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:21,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:48:21,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:48:21,037 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 107 [2025-02-06 18:48:21,040 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 102 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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) [2025-02-06 18:48:21,040 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:21,040 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 107 [2025-02-06 18:48:21,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:22,660 INFO L124 PetriNetUnfolderBase]: 14059/22486 cut-off events. [2025-02-06 18:48:22,661 INFO L125 PetriNetUnfolderBase]: For 350/350 co-relation queries the response was YES. [2025-02-06 18:48:22,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41488 conditions, 22486 events. 14059/22486 cut-off events. For 350/350 co-relation queries the response was YES. Maximal size of possible extension queue 1407. Compared 187009 event pairs, 5420 based on Foata normal form. 532/18809 useless extension candidates. Maximal degree in co-relation 40483. Up to 10138 conditions per place. [2025-02-06 18:48:22,827 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 100 selfloop transitions, 5 changer transitions 0/159 dead transitions. [2025-02-06 18:48:22,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 159 transitions, 555 flow [2025-02-06 18:48:22,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:48:22,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:48:22,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 336 transitions. [2025-02-06 18:48:22,838 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7850467289719626 [2025-02-06 18:48:22,839 INFO L175 Difference]: Start difference. First operand has 94 places, 102 transitions, 219 flow. Second operand 4 states and 336 transitions. [2025-02-06 18:48:22,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 159 transitions, 555 flow [2025-02-06 18:48:22,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 159 transitions, 540 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-02-06 18:48:22,880 INFO L231 Difference]: Finished difference. Result has 94 places, 104 transitions, 244 flow [2025-02-06 18:48:22,881 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=94, PETRI_TRANSITIONS=104} [2025-02-06 18:48:22,883 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 0 predicate places. [2025-02-06 18:48:22,883 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 104 transitions, 244 flow [2025-02-06 18:48:22,884 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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) [2025-02-06 18:48:22,884 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:22,884 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:22,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-06 18:48:22,884 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:48:22,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:22,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1203183284, now seen corresponding path program 1 times [2025-02-06 18:48:22,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:22,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029213427] [2025-02-06 18:48:22,885 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:22,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:22,895 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-06 18:48:22,906 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-06 18:48:22,910 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:22,911 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:22,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:48:22,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:22,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029213427] [2025-02-06 18:48:22,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029213427] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:48:22,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:48:22,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:48:22,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622109940] [2025-02-06 18:48:22,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:48:22,962 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:48:22,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:22,963 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:48:22,963 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:48:22,975 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 107 [2025-02-06 18:48:22,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 104 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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) [2025-02-06 18:48:22,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:22,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 107 [2025-02-06 18:48:22,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:24,401 INFO L124 PetriNetUnfolderBase]: 10585/19081 cut-off events. [2025-02-06 18:48:24,402 INFO L125 PetriNetUnfolderBase]: For 3433/3455 co-relation queries the response was YES. [2025-02-06 18:48:24,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36848 conditions, 19081 events. 10585/19081 cut-off events. For 3433/3455 co-relation queries the response was YES. Maximal size of possible extension queue 1213. Compared 175659 event pairs, 3367 based on Foata normal form. 22/16403 useless extension candidates. Maximal degree in co-relation 21643. Up to 7399 conditions per place. [2025-02-06 18:48:24,529 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 68 selfloop transitions, 4 changer transitions 0/130 dead transitions. [2025-02-06 18:48:24,529 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 130 transitions, 443 flow [2025-02-06 18:48:24,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:48:24,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:48:24,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 311 transitions. [2025-02-06 18:48:24,533 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7266355140186916 [2025-02-06 18:48:24,533 INFO L175 Difference]: Start difference. First operand has 94 places, 104 transitions, 244 flow. Second operand 4 states and 311 transitions. [2025-02-06 18:48:24,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 130 transitions, 443 flow [2025-02-06 18:48:24,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 130 transitions, 443 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:48:24,581 INFO L231 Difference]: Finished difference. Result has 96 places, 103 transitions, 250 flow [2025-02-06 18:48:24,581 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=96, PETRI_TRANSITIONS=103} [2025-02-06 18:48:24,582 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 2 predicate places. [2025-02-06 18:48:24,583 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 103 transitions, 250 flow [2025-02-06 18:48:24,583 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 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) [2025-02-06 18:48:24,583 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:24,583 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:24,583 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-06 18:48:24,583 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:48:24,584 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:24,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1932996839, now seen corresponding path program 1 times [2025-02-06 18:48:24,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:24,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815740592] [2025-02-06 18:48:24,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:24,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:24,594 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:48:24,608 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:48:24,609 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:24,609 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:24,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:48:24,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:24,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815740592] [2025-02-06 18:48:24,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815740592] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:48:24,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:48:24,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:48:24,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634670135] [2025-02-06 18:48:24,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:48:24,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:48:24,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:24,697 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:48:24,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:48:24,716 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 107 [2025-02-06 18:48:24,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 103 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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) [2025-02-06 18:48:24,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:24,718 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 107 [2025-02-06 18:48:24,718 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:26,549 INFO L124 PetriNetUnfolderBase]: 16662/27924 cut-off events. [2025-02-06 18:48:26,550 INFO L125 PetriNetUnfolderBase]: For 8540/9365 co-relation queries the response was YES. [2025-02-06 18:48:26,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55652 conditions, 27924 events. 16662/27924 cut-off events. For 8540/9365 co-relation queries the response was YES. Maximal size of possible extension queue 1652. Compared 250604 event pairs, 6498 based on Foata normal form. 1059/24202 useless extension candidates. Maximal degree in co-relation 34387. Up to 11984 conditions per place. [2025-02-06 18:48:26,707 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 104 selfloop transitions, 5 changer transitions 0/162 dead transitions. [2025-02-06 18:48:26,707 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 162 transitions, 640 flow [2025-02-06 18:48:26,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:48:26,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:48:26,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 334 transitions. [2025-02-06 18:48:26,708 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.780373831775701 [2025-02-06 18:48:26,709 INFO L175 Difference]: Start difference. First operand has 96 places, 103 transitions, 250 flow. Second operand 4 states and 334 transitions. [2025-02-06 18:48:26,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 162 transitions, 640 flow [2025-02-06 18:48:26,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 162 transitions, 620 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:48:26,768 INFO L231 Difference]: Finished difference. Result has 98 places, 105 transitions, 276 flow [2025-02-06 18:48:26,768 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=98, PETRI_TRANSITIONS=105} [2025-02-06 18:48:26,768 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 4 predicate places. [2025-02-06 18:48:26,769 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 105 transitions, 276 flow [2025-02-06 18:48:26,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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) [2025-02-06 18:48:26,769 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:26,769 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:26,769 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-06 18:48:26,769 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:48:26,769 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:26,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1355993735, now seen corresponding path program 1 times [2025-02-06 18:48:26,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:26,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203225820] [2025-02-06 18:48:26,770 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:26,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:26,777 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-06 18:48:26,784 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-06 18:48:26,784 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:26,784 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:26,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:48:26,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:26,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203225820] [2025-02-06 18:48:26,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203225820] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:48:26,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:48:26,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:48:26,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817758281] [2025-02-06 18:48:26,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:48:26,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:48:26,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:26,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:48:26,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:48:26,870 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 107 [2025-02-06 18:48:26,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 105 transitions, 276 flow. Second operand has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 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) [2025-02-06 18:48:26,871 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:26,871 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 107 [2025-02-06 18:48:26,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:28,164 INFO L124 PetriNetUnfolderBase]: 12451/23079 cut-off events. [2025-02-06 18:48:28,165 INFO L125 PetriNetUnfolderBase]: For 8831/9450 co-relation queries the response was YES. [2025-02-06 18:48:28,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47137 conditions, 23079 events. 12451/23079 cut-off events. For 8831/9450 co-relation queries the response was YES. Maximal size of possible extension queue 1381. Compared 223221 event pairs, 4037 based on Foata normal form. 637/20698 useless extension candidates. Maximal degree in co-relation 29721. Up to 8977 conditions per place. [2025-02-06 18:48:28,263 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 73 selfloop transitions, 4 changer transitions 0/133 dead transitions. [2025-02-06 18:48:28,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 133 transitions, 505 flow [2025-02-06 18:48:28,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:48:28,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:48:28,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 307 transitions. [2025-02-06 18:48:28,264 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7172897196261683 [2025-02-06 18:48:28,264 INFO L175 Difference]: Start difference. First operand has 98 places, 105 transitions, 276 flow. Second operand 4 states and 307 transitions. [2025-02-06 18:48:28,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 133 transitions, 505 flow [2025-02-06 18:48:28,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 133 transitions, 505 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:48:28,323 INFO L231 Difference]: Finished difference. Result has 100 places, 104 transitions, 280 flow [2025-02-06 18:48:28,325 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=280, PETRI_PLACES=100, PETRI_TRANSITIONS=104} [2025-02-06 18:48:28,326 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 6 predicate places. [2025-02-06 18:48:28,326 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 104 transitions, 280 flow [2025-02-06 18:48:28,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 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) [2025-02-06 18:48:28,326 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:28,327 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:28,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-06 18:48:28,327 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:48:28,328 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:28,328 INFO L85 PathProgramCache]: Analyzing trace with hash 206640789, now seen corresponding path program 1 times [2025-02-06 18:48:28,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:28,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087553160] [2025-02-06 18:48:28,329 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:28,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:28,336 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:48:28,341 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:48:28,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:28,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:28,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:48:28,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:28,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087553160] [2025-02-06 18:48:28,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087553160] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:48:28,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:48:28,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:48:28,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946196684] [2025-02-06 18:48:28,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:48:28,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:48:28,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:28,401 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:48:28,401 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:48:28,411 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 107 [2025-02-06 18:48:28,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 104 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 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) [2025-02-06 18:48:28,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:28,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 107 [2025-02-06 18:48:28,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:29,546 INFO L124 PetriNetUnfolderBase]: 12470/23374 cut-off events. [2025-02-06 18:48:29,547 INFO L125 PetriNetUnfolderBase]: For 10404/10730 co-relation queries the response was YES. [2025-02-06 18:48:29,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48381 conditions, 23374 events. 12470/23374 cut-off events. For 10404/10730 co-relation queries the response was YES. Maximal size of possible extension queue 1427. Compared 228857 event pairs, 3941 based on Foata normal form. 326/20655 useless extension candidates. Maximal degree in co-relation 30653. Up to 8891 conditions per place. [2025-02-06 18:48:29,668 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 71 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2025-02-06 18:48:29,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 131 transitions, 511 flow [2025-02-06 18:48:29,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:48:29,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:48:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 310 transitions. [2025-02-06 18:48:29,669 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7242990654205608 [2025-02-06 18:48:29,670 INFO L175 Difference]: Start difference. First operand has 100 places, 104 transitions, 280 flow. Second operand 4 states and 310 transitions. [2025-02-06 18:48:29,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 131 transitions, 511 flow [2025-02-06 18:48:29,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 131 transitions, 497 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:48:29,782 INFO L231 Difference]: Finished difference. Result has 99 places, 103 transitions, 278 flow [2025-02-06 18:48:29,782 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=278, PETRI_PLACES=99, PETRI_TRANSITIONS=103} [2025-02-06 18:48:29,782 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 5 predicate places. [2025-02-06 18:48:29,783 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 103 transitions, 278 flow [2025-02-06 18:48:29,783 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 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) [2025-02-06 18:48:29,783 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:29,783 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:29,783 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-06 18:48:29,783 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:48:29,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:29,783 INFO L85 PathProgramCache]: Analyzing trace with hash -913867538, now seen corresponding path program 1 times [2025-02-06 18:48:29,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:29,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450248478] [2025-02-06 18:48:29,784 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:29,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:29,790 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:48:29,797 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:48:29,797 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:29,797 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:29,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:48:29,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:29,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450248478] [2025-02-06 18:48:29,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450248478] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:48:29,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:48:29,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:48:29,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872092773] [2025-02-06 18:48:29,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:48:29,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:48:29,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:29,858 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:48:29,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:48:29,878 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 107 [2025-02-06 18:48:29,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 103 transitions, 278 flow. Second operand has 5 states, 5 states have (on average 59.4) internal successors, (297), 5 states have internal predecessors, (297), 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) [2025-02-06 18:48:29,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:29,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 107 [2025-02-06 18:48:29,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:31,417 INFO L124 PetriNetUnfolderBase]: 16728/27017 cut-off events. [2025-02-06 18:48:31,418 INFO L125 PetriNetUnfolderBase]: For 10953/11787 co-relation queries the response was YES. [2025-02-06 18:48:31,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59137 conditions, 27017 events. 16728/27017 cut-off events. For 10953/11787 co-relation queries the response was YES. Maximal size of possible extension queue 1632. Compared 233352 event pairs, 3953 based on Foata normal form. 420/24833 useless extension candidates. Maximal degree in co-relation 36750. Up to 10961 conditions per place. [2025-02-06 18:48:31,543 INFO L140 encePairwiseOnDemand]: 101/107 looper letters, 102 selfloop transitions, 6 changer transitions 0/160 dead transitions. [2025-02-06 18:48:31,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 160 transitions, 662 flow [2025-02-06 18:48:31,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:48:31,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:48:31,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 392 transitions. [2025-02-06 18:48:31,544 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7327102803738318 [2025-02-06 18:48:31,544 INFO L175 Difference]: Start difference. First operand has 99 places, 103 transitions, 278 flow. Second operand 5 states and 392 transitions. [2025-02-06 18:48:31,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 160 transitions, 662 flow [2025-02-06 18:48:31,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 160 transitions, 642 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:48:31,616 INFO L231 Difference]: Finished difference. Result has 99 places, 102 transitions, 280 flow [2025-02-06 18:48:31,617 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=280, PETRI_PLACES=99, PETRI_TRANSITIONS=102} [2025-02-06 18:48:31,617 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 5 predicate places. [2025-02-06 18:48:31,617 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 102 transitions, 280 flow [2025-02-06 18:48:31,617 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.4) internal successors, (297), 5 states have internal predecessors, (297), 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) [2025-02-06 18:48:31,617 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:31,617 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:31,617 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-06 18:48:31,617 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:48:31,618 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:31,618 INFO L85 PathProgramCache]: Analyzing trace with hash -913866545, now seen corresponding path program 1 times [2025-02-06 18:48:31,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:31,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785492822] [2025-02-06 18:48:31,618 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:31,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:31,623 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-02-06 18:48:31,625 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-02-06 18:48:31,626 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:31,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:31,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:48:31,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:31,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785492822] [2025-02-06 18:48:31,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785492822] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:48:31,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:48:31,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:48:31,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677534024] [2025-02-06 18:48:31,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:48:31,657 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:48:31,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:31,658 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:48:31,658 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:48:31,673 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 107 [2025-02-06 18:48:31,674 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 102 transitions, 280 flow. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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) [2025-02-06 18:48:31,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:31,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 107 [2025-02-06 18:48:31,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:32,764 INFO L124 PetriNetUnfolderBase]: 13773/24510 cut-off events. [2025-02-06 18:48:32,764 INFO L125 PetriNetUnfolderBase]: For 11818/12497 co-relation queries the response was YES. [2025-02-06 18:48:32,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51918 conditions, 24510 events. 13773/24510 cut-off events. For 11818/12497 co-relation queries the response was YES. Maximal size of possible extension queue 1464. Compared 229890 event pairs, 6723 based on Foata normal form. 658/22134 useless extension candidates. Maximal degree in co-relation 32396. Up to 12048 conditions per place. [2025-02-06 18:48:33,081 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 104 selfloop transitions, 4 changer transitions 0/160 dead transitions. [2025-02-06 18:48:33,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 160 transitions, 650 flow [2025-02-06 18:48:33,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:48:33,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:48:33,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 331 transitions. [2025-02-06 18:48:33,082 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7733644859813084 [2025-02-06 18:48:33,082 INFO L175 Difference]: Start difference. First operand has 99 places, 102 transitions, 280 flow. Second operand 4 states and 331 transitions. [2025-02-06 18:48:33,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 160 transitions, 650 flow [2025-02-06 18:48:33,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 160 transitions, 638 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:48:33,124 INFO L231 Difference]: Finished difference. Result has 98 places, 101 transitions, 270 flow [2025-02-06 18:48:33,124 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=270, PETRI_PLACES=98, PETRI_TRANSITIONS=101} [2025-02-06 18:48:33,125 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 4 predicate places. [2025-02-06 18:48:33,125 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 101 transitions, 270 flow [2025-02-06 18:48:33,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 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) [2025-02-06 18:48:33,125 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:33,125 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:33,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-02-06 18:48:33,126 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:48:33,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:33,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1496172972, now seen corresponding path program 1 times [2025-02-06 18:48:33,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:33,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308831215] [2025-02-06 18:48:33,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:33,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:33,131 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:48:33,134 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:48:33,134 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:33,135 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:33,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:48:33,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:33,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308831215] [2025-02-06 18:48:33,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308831215] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:48:33,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:48:33,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:48:33,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763316183] [2025-02-06 18:48:33,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:48:33,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:48:33,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:33,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:48:33,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:48:33,197 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 107 [2025-02-06 18:48:33,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 101 transitions, 270 flow. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 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) [2025-02-06 18:48:33,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:33,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 107 [2025-02-06 18:48:33,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:34,978 INFO L124 PetriNetUnfolderBase]: 19437/33119 cut-off events. [2025-02-06 18:48:34,978 INFO L125 PetriNetUnfolderBase]: For 14483/15913 co-relation queries the response was YES. [2025-02-06 18:48:35,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69570 conditions, 33119 events. 19437/33119 cut-off events. For 14483/15913 co-relation queries the response was YES. Maximal size of possible extension queue 1826. Compared 309020 event pairs, 8124 based on Foata normal form. 1667/30027 useless extension candidates. Maximal degree in co-relation 44116. Up to 14653 conditions per place. [2025-02-06 18:48:35,200 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 108 selfloop transitions, 5 changer transitions 0/162 dead transitions. [2025-02-06 18:48:35,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 162 transitions, 704 flow [2025-02-06 18:48:35,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:48:35,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:48:35,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2025-02-06 18:48:35,202 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7757009345794392 [2025-02-06 18:48:35,202 INFO L175 Difference]: Start difference. First operand has 98 places, 101 transitions, 270 flow. Second operand 4 states and 332 transitions. [2025-02-06 18:48:35,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 162 transitions, 704 flow [2025-02-06 18:48:35,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 162 transitions, 688 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-02-06 18:48:35,263 INFO L231 Difference]: Finished difference. Result has 101 places, 103 transitions, 298 flow [2025-02-06 18:48:35,263 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=101, PETRI_TRANSITIONS=103} [2025-02-06 18:48:35,264 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 7 predicate places. [2025-02-06 18:48:35,264 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 103 transitions, 298 flow [2025-02-06 18:48:35,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 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) [2025-02-06 18:48:35,264 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:35,264 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:35,264 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-02-06 18:48:35,264 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:48:35,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:35,265 INFO L85 PathProgramCache]: Analyzing trace with hash 2110867069, now seen corresponding path program 1 times [2025-02-06 18:48:35,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:35,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689811065] [2025-02-06 18:48:35,268 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:35,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:35,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:48:35,277 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:48:35,277 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:35,277 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:35,307 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:48:35,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:35,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689811065] [2025-02-06 18:48:35,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689811065] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:48:35,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:48:35,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:48:35,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195361851] [2025-02-06 18:48:35,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:48:35,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:48:35,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:35,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:48:35,309 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:48:35,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 107 [2025-02-06 18:48:35,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 103 transitions, 298 flow. Second operand has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 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) [2025-02-06 18:48:35,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:35,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 107 [2025-02-06 18:48:35,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:36,464 INFO L124 PetriNetUnfolderBase]: 14707/27957 cut-off events. [2025-02-06 18:48:36,464 INFO L125 PetriNetUnfolderBase]: For 15438/16239 co-relation queries the response was YES. [2025-02-06 18:48:36,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59553 conditions, 27957 events. 14707/27957 cut-off events. For 15438/16239 co-relation queries the response was YES. Maximal size of possible extension queue 1608. Compared 283439 event pairs, 4768 based on Foata normal form. 974/25843 useless extension candidates. Maximal degree in co-relation 39491. Up to 10659 conditions per place. [2025-02-06 18:48:36,653 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 76 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2025-02-06 18:48:36,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 132 transitions, 553 flow [2025-02-06 18:48:36,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:48:36,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:48:36,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 306 transitions. [2025-02-06 18:48:36,654 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7149532710280374 [2025-02-06 18:48:36,655 INFO L175 Difference]: Start difference. First operand has 101 places, 103 transitions, 298 flow. Second operand 4 states and 306 transitions. [2025-02-06 18:48:36,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 132 transitions, 553 flow [2025-02-06 18:48:36,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 132 transitions, 553 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-02-06 18:48:36,822 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 302 flow [2025-02-06 18:48:36,822 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2025-02-06 18:48:36,822 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 9 predicate places. [2025-02-06 18:48:36,823 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 302 flow [2025-02-06 18:48:36,823 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.75) internal successors, (243), 4 states have internal predecessors, (243), 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) [2025-02-06 18:48:36,823 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:36,823 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:36,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-02-06 18:48:36,823 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:48:36,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:36,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1734878026, now seen corresponding path program 1 times [2025-02-06 18:48:36,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:36,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365810013] [2025-02-06 18:48:36,823 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:36,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:36,828 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-06 18:48:36,834 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-06 18:48:36,834 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:36,834 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:36,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:48:36,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:36,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365810013] [2025-02-06 18:48:36,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365810013] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:48:36,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:48:36,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:48:36,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458727803] [2025-02-06 18:48:36,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:48:36,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:48:36,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:36,903 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:48:36,904 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:48:36,934 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 107 [2025-02-06 18:48:36,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 302 flow. Second operand has 6 states, 6 states have (on average 56.166666666666664) internal successors, (337), 6 states have internal predecessors, (337), 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) [2025-02-06 18:48:36,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:36,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 107 [2025-02-06 18:48:36,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:38,982 INFO L124 PetriNetUnfolderBase]: 19318/31755 cut-off events. [2025-02-06 18:48:38,982 INFO L125 PetriNetUnfolderBase]: For 20890/22085 co-relation queries the response was YES. [2025-02-06 18:48:39,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73468 conditions, 31755 events. 19318/31755 cut-off events. For 20890/22085 co-relation queries the response was YES. Maximal size of possible extension queue 1840. Compared 285649 event pairs, 4854 based on Foata normal form. 1599/30847 useless extension candidates. Maximal degree in co-relation 48503. Up to 8930 conditions per place. [2025-02-06 18:48:39,237 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 136 selfloop transitions, 9 changer transitions 0/195 dead transitions. [2025-02-06 18:48:39,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 195 transitions, 913 flow [2025-02-06 18:48:39,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:48:39,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:48:39,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 458 transitions. [2025-02-06 18:48:39,239 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7133956386292835 [2025-02-06 18:48:39,239 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 302 flow. Second operand 6 states and 458 transitions. [2025-02-06 18:48:39,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 195 transitions, 913 flow [2025-02-06 18:48:39,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 195 transitions, 887 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:48:39,374 INFO L231 Difference]: Finished difference. Result has 105 places, 102 transitions, 319 flow [2025-02-06 18:48:39,374 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=319, PETRI_PLACES=105, PETRI_TRANSITIONS=102} [2025-02-06 18:48:39,374 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 11 predicate places. [2025-02-06 18:48:39,374 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 102 transitions, 319 flow [2025-02-06 18:48:39,375 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.166666666666664) internal successors, (337), 6 states have internal predecessors, (337), 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) [2025-02-06 18:48:39,375 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:39,375 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:39,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-02-06 18:48:39,375 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:48:39,375 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:39,375 INFO L85 PathProgramCache]: Analyzing trace with hash 863278809, now seen corresponding path program 1 times [2025-02-06 18:48:39,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:39,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235006224] [2025-02-06 18:48:39,375 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:39,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:39,383 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:48:39,391 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:48:39,392 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:39,392 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:39,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:48:39,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:39,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235006224] [2025-02-06 18:48:39,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235006224] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:48:39,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:48:39,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:48:39,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717213671] [2025-02-06 18:48:39,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:48:39,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:48:39,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:39,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:48:39,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:48:39,435 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 107 [2025-02-06 18:48:39,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 102 transitions, 319 flow. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 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) [2025-02-06 18:48:39,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:39,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 107 [2025-02-06 18:48:39,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:40,885 INFO L124 PetriNetUnfolderBase]: 14931/28166 cut-off events. [2025-02-06 18:48:40,885 INFO L125 PetriNetUnfolderBase]: For 25276/26766 co-relation queries the response was YES. [2025-02-06 18:48:40,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63557 conditions, 28166 events. 14931/28166 cut-off events. For 25276/26766 co-relation queries the response was YES. Maximal size of possible extension queue 1554. Compared 283551 event pairs, 5190 based on Foata normal form. 1293/26429 useless extension candidates. Maximal degree in co-relation 40736. Up to 9662 conditions per place. [2025-02-06 18:48:41,078 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 76 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2025-02-06 18:48:41,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 131 transitions, 592 flow [2025-02-06 18:48:41,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:48:41,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:48:41,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 309 transitions. [2025-02-06 18:48:41,080 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7219626168224299 [2025-02-06 18:48:41,080 INFO L175 Difference]: Start difference. First operand has 105 places, 102 transitions, 319 flow. Second operand 4 states and 309 transitions. [2025-02-06 18:48:41,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 131 transitions, 592 flow [2025-02-06 18:48:41,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 131 transitions, 570 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:48:41,279 INFO L231 Difference]: Finished difference. Result has 103 places, 101 transitions, 312 flow [2025-02-06 18:48:41,280 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=312, PETRI_PLACES=103, PETRI_TRANSITIONS=101} [2025-02-06 18:48:41,280 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 9 predicate places. [2025-02-06 18:48:41,280 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 101 transitions, 312 flow [2025-02-06 18:48:41,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 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) [2025-02-06 18:48:41,281 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:41,281 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:41,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-02-06 18:48:41,281 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:48:41,281 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:41,281 INFO L85 PathProgramCache]: Analyzing trace with hash 1012369367, now seen corresponding path program 1 times [2025-02-06 18:48:41,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:41,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901266751] [2025-02-06 18:48:41,281 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:41,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:41,286 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:48:41,289 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:48:41,289 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:41,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:41,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:48:41,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:41,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901266751] [2025-02-06 18:48:41,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901266751] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:48:41,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:48:41,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:48:41,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622361062] [2025-02-06 18:48:41,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:48:41,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-02-06 18:48:41,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:41,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-02-06 18:48:41,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-06 18:48:41,376 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 107 [2025-02-06 18:48:41,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 101 transitions, 312 flow. Second operand has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 states have internal predecessors, (299), 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) [2025-02-06 18:48:41,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:41,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 107 [2025-02-06 18:48:41,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:43,053 INFO L124 PetriNetUnfolderBase]: 19838/32292 cut-off events. [2025-02-06 18:48:43,053 INFO L125 PetriNetUnfolderBase]: For 25105/27521 co-relation queries the response was YES. [2025-02-06 18:48:43,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77254 conditions, 32292 events. 19838/32292 cut-off events. For 25105/27521 co-relation queries the response was YES. Maximal size of possible extension queue 1880. Compared 286370 event pairs, 4725 based on Foata normal form. 1724/31780 useless extension candidates. Maximal degree in co-relation 50603. Up to 13067 conditions per place. [2025-02-06 18:48:43,214 INFO L140 encePairwiseOnDemand]: 101/107 looper letters, 109 selfloop transitions, 6 changer transitions 0/162 dead transitions. [2025-02-06 18:48:43,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 162 transitions, 770 flow [2025-02-06 18:48:43,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-02-06 18:48:43,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-02-06 18:48:43,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2025-02-06 18:48:43,215 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7289719626168224 [2025-02-06 18:48:43,215 INFO L175 Difference]: Start difference. First operand has 103 places, 101 transitions, 312 flow. Second operand 5 states and 390 transitions. [2025-02-06 18:48:43,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 162 transitions, 770 flow [2025-02-06 18:48:43,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 162 transitions, 750 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:48:43,339 INFO L231 Difference]: Finished difference. Result has 103 places, 100 transitions, 314 flow [2025-02-06 18:48:43,339 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=314, PETRI_PLACES=103, PETRI_TRANSITIONS=100} [2025-02-06 18:48:43,340 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 9 predicate places. [2025-02-06 18:48:43,340 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 100 transitions, 314 flow [2025-02-06 18:48:43,340 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 states have internal predecessors, (299), 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) [2025-02-06 18:48:43,340 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:43,340 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:43,340 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-02-06 18:48:43,340 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:48:43,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:43,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1012370360, now seen corresponding path program 1 times [2025-02-06 18:48:43,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:43,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411159618] [2025-02-06 18:48:43,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:43,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:43,348 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:48:43,350 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:48:43,350 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:43,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:43,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:48:43,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:43,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411159618] [2025-02-06 18:48:43,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411159618] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:48:43,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:48:43,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:48:43,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735967485] [2025-02-06 18:48:43,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:48:43,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:48:43,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:43,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:48:43,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:48:43,401 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 107 [2025-02-06 18:48:43,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 100 transitions, 314 flow. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2025-02-06 18:48:43,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:43,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 107 [2025-02-06 18:48:43,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:44,836 INFO L124 PetriNetUnfolderBase]: 16371/29509 cut-off events. [2025-02-06 18:48:44,836 INFO L125 PetriNetUnfolderBase]: For 24402/26174 co-relation queries the response was YES. [2025-02-06 18:48:44,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68154 conditions, 29509 events. 16371/29509 cut-off events. For 24402/26174 co-relation queries the response was YES. Maximal size of possible extension queue 1688. Compared 286274 event pairs, 8142 based on Foata normal form. 1720/28450 useless extension candidates. Maximal degree in co-relation 44971. Up to 14288 conditions per place. [2025-02-06 18:48:44,974 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 111 selfloop transitions, 4 changer transitions 0/162 dead transitions. [2025-02-06 18:48:44,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 162 transitions, 758 flow [2025-02-06 18:48:44,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:48:44,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:48:44,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2025-02-06 18:48:44,975 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7686915887850467 [2025-02-06 18:48:44,975 INFO L175 Difference]: Start difference. First operand has 103 places, 100 transitions, 314 flow. Second operand 4 states and 329 transitions. [2025-02-06 18:48:44,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 162 transitions, 758 flow [2025-02-06 18:48:45,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 162 transitions, 746 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-02-06 18:48:45,083 INFO L231 Difference]: Finished difference. Result has 102 places, 99 transitions, 304 flow [2025-02-06 18:48:45,083 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=304, PETRI_PLACES=102, PETRI_TRANSITIONS=99} [2025-02-06 18:48:45,084 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 8 predicate places. [2025-02-06 18:48:45,084 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 99 transitions, 304 flow [2025-02-06 18:48:45,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 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) [2025-02-06 18:48:45,084 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:45,084 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:45,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-02-06 18:48:45,084 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:48:45,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:45,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1134666475, now seen corresponding path program 1 times [2025-02-06 18:48:45,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:45,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949343071] [2025-02-06 18:48:45,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:45,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:45,088 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-06 18:48:45,092 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-06 18:48:45,092 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:45,092 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:45,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:48:45,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:45,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949343071] [2025-02-06 18:48:45,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949343071] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:48:45,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:48:45,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:48:45,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605219444] [2025-02-06 18:48:45,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:48:45,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:48:45,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:45,117 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:48:45,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:48:45,130 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 107 [2025-02-06 18:48:45,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 99 transitions, 304 flow. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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) [2025-02-06 18:48:45,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:45,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 107 [2025-02-06 18:48:45,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:47,172 INFO L124 PetriNetUnfolderBase]: 19326/32080 cut-off events. [2025-02-06 18:48:47,173 INFO L125 PetriNetUnfolderBase]: For 24577/25908 co-relation queries the response was YES. [2025-02-06 18:48:47,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74885 conditions, 32080 events. 19326/32080 cut-off events. For 24577/25908 co-relation queries the response was YES. Maximal size of possible extension queue 1756. Compared 291072 event pairs, 8135 based on Foata normal form. 1493/30743 useless extension candidates. Maximal degree in co-relation 49232. Up to 14651 conditions per place. [2025-02-06 18:48:47,364 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 109 selfloop transitions, 5 changer transitions 0/161 dead transitions. [2025-02-06 18:48:47,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 161 transitions, 743 flow [2025-02-06 18:48:47,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:48:47,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:48:47,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2025-02-06 18:48:47,365 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7686915887850467 [2025-02-06 18:48:47,365 INFO L175 Difference]: Start difference. First operand has 102 places, 99 transitions, 304 flow. Second operand 4 states and 329 transitions. [2025-02-06 18:48:47,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 161 transitions, 743 flow [2025-02-06 18:48:47,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 161 transitions, 724 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:48:47,418 INFO L231 Difference]: Finished difference. Result has 102 places, 99 transitions, 308 flow [2025-02-06 18:48:47,419 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=289, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=102, PETRI_TRANSITIONS=99} [2025-02-06 18:48:47,420 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 8 predicate places. [2025-02-06 18:48:47,420 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 99 transitions, 308 flow [2025-02-06 18:48:47,420 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 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) [2025-02-06 18:48:47,421 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:47,421 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:47,421 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-02-06 18:48:47,421 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:48:47,421 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:47,421 INFO L85 PathProgramCache]: Analyzing trace with hash 991809240, now seen corresponding path program 1 times [2025-02-06 18:48:47,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:47,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580578434] [2025-02-06 18:48:47,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:47,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:47,464 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:48:47,467 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:48:47,473 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:47,473 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:47,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:48:47,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:47,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580578434] [2025-02-06 18:48:47,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580578434] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:48:47,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:48:47,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-06 18:48:47,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676636247] [2025-02-06 18:48:47,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:48:47,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:48:47,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:47,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:48:47,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:48:47,567 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 107 [2025-02-06 18:48:47,568 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 99 transitions, 308 flow. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 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) [2025-02-06 18:48:47,568 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:47,568 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 107 [2025-02-06 18:48:47,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:49,322 INFO L124 PetriNetUnfolderBase]: 15954/29423 cut-off events. [2025-02-06 18:48:49,322 INFO L125 PetriNetUnfolderBase]: For 26837/28158 co-relation queries the response was YES. [2025-02-06 18:48:49,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67073 conditions, 29423 events. 15954/29423 cut-off events. For 26837/28158 co-relation queries the response was YES. Maximal size of possible extension queue 1587. Compared 290646 event pairs, 5593 based on Foata normal form. 1699/28062 useless extension candidates. Maximal degree in co-relation 54606. Up to 10731 conditions per place. [2025-02-06 18:48:49,457 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 79 selfloop transitions, 4 changer transitions 0/129 dead transitions. [2025-02-06 18:48:49,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 129 transitions, 589 flow [2025-02-06 18:48:49,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:48:49,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:48:49,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 305 transitions. [2025-02-06 18:48:49,458 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7126168224299065 [2025-02-06 18:48:49,458 INFO L175 Difference]: Start difference. First operand has 102 places, 99 transitions, 308 flow. Second operand 4 states and 305 transitions. [2025-02-06 18:48:49,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 129 transitions, 589 flow [2025-02-06 18:48:49,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 129 transitions, 581 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-02-06 18:48:49,564 INFO L231 Difference]: Finished difference. Result has 103 places, 98 transitions, 308 flow [2025-02-06 18:48:49,565 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=308, PETRI_PLACES=103, PETRI_TRANSITIONS=98} [2025-02-06 18:48:49,565 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 9 predicate places. [2025-02-06 18:48:49,565 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 98 transitions, 308 flow [2025-02-06 18:48:49,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 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) [2025-02-06 18:48:49,565 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:49,565 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:49,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-02-06 18:48:49,565 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:48:49,565 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:49,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1318679968, now seen corresponding path program 1 times [2025-02-06 18:48:49,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:49,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603027797] [2025-02-06 18:48:49,566 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:49,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:49,570 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-02-06 18:48:49,575 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-02-06 18:48:49,575 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:49,575 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:49,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:48:49,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:49,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603027797] [2025-02-06 18:48:49,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603027797] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:48:49,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:48:49,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-06 18:48:49,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736199111] [2025-02-06 18:48:49,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:48:49,626 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-06 18:48:49,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:49,626 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-06 18:48:49,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-06 18:48:49,648 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 107 [2025-02-06 18:48:49,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 98 transitions, 308 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 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) [2025-02-06 18:48:49,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:49,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 107 [2025-02-06 18:48:49,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:52,534 INFO L124 PetriNetUnfolderBase]: 20833/33608 cut-off events. [2025-02-06 18:48:52,535 INFO L125 PetriNetUnfolderBase]: For 32216/33987 co-relation queries the response was YES. [2025-02-06 18:48:52,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82286 conditions, 33608 events. 20833/33608 cut-off events. For 32216/33987 co-relation queries the response was YES. Maximal size of possible extension queue 1902. Compared 295907 event pairs, 5085 based on Foata normal form. 2581/33782 useless extension candidates. Maximal degree in co-relation 66920. Up to 9331 conditions per place. [2025-02-06 18:48:52,720 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 141 selfloop transitions, 9 changer transitions 0/194 dead transitions. [2025-02-06 18:48:52,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 194 transitions, 980 flow [2025-02-06 18:48:52,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-06 18:48:52,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-02-06 18:48:52,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 455 transitions. [2025-02-06 18:48:52,722 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7087227414330218 [2025-02-06 18:48:52,722 INFO L175 Difference]: Start difference. First operand has 103 places, 98 transitions, 308 flow. Second operand 6 states and 455 transitions. [2025-02-06 18:48:52,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 194 transitions, 980 flow [2025-02-06 18:48:52,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 194 transitions, 954 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-02-06 18:48:52,830 INFO L231 Difference]: Finished difference. Result has 105 places, 98 transitions, 325 flow [2025-02-06 18:48:52,830 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=105, PETRI_TRANSITIONS=98} [2025-02-06 18:48:52,831 INFO L279 CegarLoopForPetriNet]: 94 programPoint places, 11 predicate places. [2025-02-06 18:48:52,831 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 98 transitions, 325 flow [2025-02-06 18:48:52,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 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) [2025-02-06 18:48:52,832 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-02-06 18:48:52,832 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-06 18:48:52,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-02-06 18:48:52,832 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-02-06 18:48:52,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-06 18:48:52,832 INFO L85 PathProgramCache]: Analyzing trace with hash 681316060, now seen corresponding path program 1 times [2025-02-06 18:48:52,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-06 18:48:52,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511652971] [2025-02-06 18:48:52,835 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-06 18:48:52,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-06 18:48:52,844 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-02-06 18:48:52,849 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-02-06 18:48:52,850 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-06 18:48:52,850 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-06 18:48:52,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-06 18:48:52,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-06 18:48:52,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511652971] [2025-02-06 18:48:52,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511652971] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-06 18:48:52,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-06 18:48:52,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-06 18:48:52,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102767686] [2025-02-06 18:48:52,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-06 18:48:52,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-06 18:48:52,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-06 18:48:52,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-06 18:48:52,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-02-06 18:48:52,914 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 107 [2025-02-06 18:48:52,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 98 transitions, 325 flow. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 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) [2025-02-06 18:48:52,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-02-06 18:48:52,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 107 [2025-02-06 18:48:52,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-02-06 18:48:54,848 INFO L124 PetriNetUnfolderBase]: 17693/31228 cut-off events. [2025-02-06 18:48:54,848 INFO L125 PetriNetUnfolderBase]: For 37620/40026 co-relation queries the response was YES. [2025-02-06 18:48:54,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76013 conditions, 31228 events. 17693/31228 cut-off events. For 37620/40026 co-relation queries the response was YES. Maximal size of possible extension queue 1724. Compared 299545 event pairs, 9143 based on Foata normal form. 2581/30945 useless extension candidates. Maximal degree in co-relation 62130. Up to 15891 conditions per place. [2025-02-06 18:48:55,059 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 115 selfloop transitions, 4 changer transitions 0/162 dead transitions. [2025-02-06 18:48:55,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 162 transitions, 827 flow [2025-02-06 18:48:55,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-06 18:48:55,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-02-06 18:48:55,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 327 transitions. [2025-02-06 18:48:55,060 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.764018691588785 [2025-02-06 18:48:55,060 INFO L175 Difference]: Start difference. First operand has 105 places, 98 transitions, 325 flow. Second operand 4 states and 327 transitions. [2025-02-06 18:48:55,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 162 transitions, 827 flow