./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8fc3dc66 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2a508120cc7913f10b79dda7ca65a8b88f829725798d520aee5d1c1d04a1fc13 --- Real Ultimate output --- This is Ultimate 0.3.0-?-8fc3dc6-m [2025-03-17 19:40:45,756 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-17 19:40:45,812 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-17 19:40:45,815 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-17 19:40:45,815 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-17 19:40:45,828 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-17 19:40:45,828 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-17 19:40:45,828 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-17 19:40:45,829 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-17 19:40:45,829 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-17 19:40:45,829 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-17 19:40:45,829 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-17 19:40:45,829 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-17 19:40:45,829 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-17 19:40:45,829 INFO L153 SettingsManager]: * Use SBE=true [2025-03-17 19:40:45,829 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-17 19:40:45,830 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-17 19:40:45,830 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-17 19:40:45,830 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-17 19:40:45,830 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-17 19:40:45,830 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-17 19:40:45,830 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-17 19:40:45,830 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-17 19:40:45,830 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-17 19:40:45,830 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-17 19:40:45,830 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-17 19:40:45,830 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-17 19:40:45,830 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-17 19:40:45,830 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-17 19:40:45,831 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-17 19:40:45,831 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-17 19:40:45,831 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-17 19:40:45,831 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-17 19:40:45,831 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-17 19:40:45,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:40:45,831 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-17 19:40:45,831 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-17 19:40:45,831 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-17 19:40:45,831 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-17 19:40:45,831 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-17 19:40:45,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-17 19:40:45,832 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-17 19:40:45,832 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-17 19:40:45,832 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-17 19:40:45,832 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-17 19:40:45,832 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2a508120cc7913f10b79dda7ca65a8b88f829725798d520aee5d1c1d04a1fc13 [2025-03-17 19:40:46,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-17 19:40:46,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-17 19:40:46,089 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-17 19:40:46,090 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-17 19:40:46,091 INFO L274 PluginConnector]: CDTParser initialized [2025-03-17 19:40:46,092 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c [2025-03-17 19:40:47,265 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de732f17f/3704d4ef63da4402848c5398b690b415/FLAGd003c5c35 [2025-03-17 19:40:47,474 INFO L384 CDTParser]: Found 1 translation units. [2025-03-17 19:40:47,474 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-exp-term-subst.wvr.c [2025-03-17 19:40:47,485 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de732f17f/3704d4ef63da4402848c5398b690b415/FLAGd003c5c35 [2025-03-17 19:40:47,818 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de732f17f/3704d4ef63da4402848c5398b690b415 [2025-03-17 19:40:47,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-17 19:40:47,822 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-17 19:40:47,823 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-17 19:40:47,823 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-17 19:40:47,830 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-17 19:40:47,830 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:40:47" (1/1) ... [2025-03-17 19:40:47,832 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2580fe1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:47, skipping insertion in model container [2025-03-17 19:40:47,832 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.03 07:40:47" (1/1) ... [2025-03-17 19:40:47,846 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-17 19:40:47,968 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:40:47,976 INFO L200 MainTranslator]: Completed pre-run [2025-03-17 19:40:47,995 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-17 19:40:48,008 INFO L204 MainTranslator]: Completed translation [2025-03-17 19:40:48,008 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:48 WrapperNode [2025-03-17 19:40:48,008 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-17 19:40:48,009 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-17 19:40:48,009 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-17 19:40:48,009 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-17 19:40:48,013 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:48" (1/1) ... [2025-03-17 19:40:48,017 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:48" (1/1) ... [2025-03-17 19:40:48,031 INFO L138 Inliner]: procedures = 22, calls = 17, calls flagged for inlining = 10, calls inlined = 14, statements flattened = 213 [2025-03-17 19:40:48,031 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-17 19:40:48,032 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-17 19:40:48,032 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-17 19:40:48,032 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-17 19:40:48,038 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:48" (1/1) ... [2025-03-17 19:40:48,038 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:48" (1/1) ... [2025-03-17 19:40:48,040 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:48" (1/1) ... [2025-03-17 19:40:48,055 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-17 19:40:48,055 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:48" (1/1) ... [2025-03-17 19:40:48,055 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:48" (1/1) ... [2025-03-17 19:40:48,059 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:48" (1/1) ... [2025-03-17 19:40:48,060 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:48" (1/1) ... [2025-03-17 19:40:48,061 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:48" (1/1) ... [2025-03-17 19:40:48,061 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:48" (1/1) ... [2025-03-17 19:40:48,063 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-17 19:40:48,063 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-17 19:40:48,063 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-17 19:40:48,063 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-17 19:40:48,064 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:48" (1/1) ... [2025-03-17 19:40:48,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-17 19:40:48,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-17 19:40:48,092 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-17 19:40:48,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-17 19:40:48,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-17 19:40:48,111 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2025-03-17 19:40:48,111 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2025-03-17 19:40:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2025-03-17 19:40:48,112 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2025-03-17 19:40:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2025-03-17 19:40:48,112 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2025-03-17 19:40:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-17 19:40:48,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-17 19:40:48,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-17 19:40:48,113 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2025-03-17 19:40:48,182 INFO L256 CfgBuilder]: Building ICFG [2025-03-17 19:40:48,183 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-17 19:40:48,463 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2025-03-17 19:40:48,463 INFO L307 CfgBuilder]: Performing block encoding [2025-03-17 19:40:48,616 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-17 19:40:48,616 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-17 19:40:48,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:40:48 BoogieIcfgContainer [2025-03-17 19:40:48,616 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-17 19:40:48,618 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-17 19:40:48,618 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-17 19:40:48,622 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-17 19:40:48,622 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.03 07:40:47" (1/3) ... [2025-03-17 19:40:48,623 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7014a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:40:48, skipping insertion in model container [2025-03-17 19:40:48,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.03 07:40:48" (2/3) ... [2025-03-17 19:40:48,624 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7014a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.03 07:40:48, skipping insertion in model container [2025-03-17 19:40:48,624 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:40:48" (3/3) ... [2025-03-17 19:40:48,625 INFO L128 eAbstractionObserver]: Analyzing ICFG chl-exp-term-subst.wvr.c [2025-03-17 19:40:48,635 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-17 19:40:48,637 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-exp-term-subst.wvr.c that has 4 procedures, 84 locations, 1 initial locations, 0 loop locations, and 18 error locations. [2025-03-17 19:40:48,637 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2025-03-17 19:40:48,695 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2025-03-17 19:40:48,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 98 transitions, 217 flow [2025-03-17 19:40:48,756 INFO L124 PetriNetUnfolderBase]: 15/95 cut-off events. [2025-03-17 19:40:48,758 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2025-03-17 19:40:48,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108 conditions, 95 events. 15/95 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 364 event pairs, 0 based on Foata normal form. 0/62 useless extension candidates. Maximal degree in co-relation 93. Up to 2 conditions per place. [2025-03-17 19:40:48,764 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 98 transitions, 217 flow [2025-03-17 19:40:48,767 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 93 transitions, 201 flow [2025-03-17 19:40:48,775 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-17 19:40:48,786 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;@6189b2e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-17 19:40:48,786 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2025-03-17 19:40:48,799 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2025-03-17 19:40:48,799 INFO L124 PetriNetUnfolderBase]: 5/35 cut-off events. [2025-03-17 19:40:48,799 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2025-03-17 19:40:48,800 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:48,800 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:40:48,801 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:40:48,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:48,807 INFO L85 PathProgramCache]: Analyzing trace with hash -500977988, now seen corresponding path program 1 times [2025-03-17 19:40:48,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:48,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188247097] [2025-03-17 19:40:48,813 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:48,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:48,889 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-17 19:40:48,912 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-17 19:40:48,912 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:48,913 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:49,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:40:49,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:49,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188247097] [2025-03-17 19:40:49,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188247097] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:40:49,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:40:49,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:40:49,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035622835] [2025-03-17 19:40:49,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:40:49,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:40:49,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:49,106 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:40:49,106 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:40:49,137 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 98 [2025-03-17 19:40:49,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 93 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:40:49,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:49,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 98 [2025-03-17 19:40:49,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:50,630 INFO L124 PetriNetUnfolderBase]: 11126/17819 cut-off events. [2025-03-17 19:40:50,631 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2025-03-17 19:40:50,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32962 conditions, 17819 events. 11126/17819 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 1092. Compared 141639 event pairs, 3987 based on Foata normal form. 444/15003 useless extension candidates. Maximal degree in co-relation 32117. Up to 7687 conditions per place. [2025-03-17 19:40:50,750 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 93 selfloop transitions, 5 changer transitions 0/146 dead transitions. [2025-03-17 19:40:50,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 146 transitions, 515 flow [2025-03-17 19:40:50,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:40:50,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:40:50,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 305 transitions. [2025-03-17 19:40:50,764 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7780612244897959 [2025-03-17 19:40:50,765 INFO L175 Difference]: Start difference. First operand has 88 places, 93 transitions, 201 flow. Second operand 4 states and 305 transitions. [2025-03-17 19:40:50,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 146 transitions, 515 flow [2025-03-17 19:40:50,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 146 transitions, 500 flow, removed 0 selfloop flow, removed 5 redundant places. [2025-03-17 19:40:50,779 INFO L231 Difference]: Finished difference. Result has 88 places, 95 transitions, 226 flow [2025-03-17 19:40:50,781 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=190, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=226, PETRI_PLACES=88, PETRI_TRANSITIONS=95} [2025-03-17 19:40:50,785 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 0 predicate places. [2025-03-17 19:40:50,785 INFO L471 AbstractCegarLoop]: Abstraction has has 88 places, 95 transitions, 226 flow [2025-03-17 19:40:50,785 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.25) internal successors, (209), 4 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:40:50,785 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:50,786 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:40:50,786 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-17 19:40:50,786 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:40:50,786 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:50,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1649552128, now seen corresponding path program 1 times [2025-03-17 19:40:50,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:50,787 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434617799] [2025-03-17 19:40:50,787 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:50,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:50,798 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-17 19:40:50,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-17 19:40:50,813 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:50,813 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:50,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:40:50,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:50,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434617799] [2025-03-17 19:40:50,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434617799] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:40:50,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:40:50,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:40:50,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056760517] [2025-03-17 19:40:50,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:40:50,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:40:50,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:50,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:40:50,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:40:50,895 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 98 [2025-03-17 19:40:50,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 95 transitions, 226 flow. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:40:50,895 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:50,895 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 98 [2025-03-17 19:40:50,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:51,757 INFO L124 PetriNetUnfolderBase]: 8257/14973 cut-off events. [2025-03-17 19:40:51,757 INFO L125 PetriNetUnfolderBase]: For 2854/2874 co-relation queries the response was YES. [2025-03-17 19:40:51,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29073 conditions, 14973 events. 8257/14973 cut-off events. For 2854/2874 co-relation queries the response was YES. Maximal size of possible extension queue 923. Compared 132749 event pairs, 2320 based on Foata normal form. 20/12962 useless extension candidates. Maximal degree in co-relation 16338. Up to 6222 conditions per place. [2025-03-17 19:40:51,836 INFO L140 encePairwiseOnDemand]: 94/98 looper letters, 63 selfloop transitions, 4 changer transitions 0/119 dead transitions. [2025-03-17 19:40:51,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 119 transitions, 411 flow [2025-03-17 19:40:51,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:40:51,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:40:51,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 282 transitions. [2025-03-17 19:40:51,841 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7193877551020408 [2025-03-17 19:40:51,841 INFO L175 Difference]: Start difference. First operand has 88 places, 95 transitions, 226 flow. Second operand 4 states and 282 transitions. [2025-03-17 19:40:51,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 119 transitions, 411 flow [2025-03-17 19:40:51,887 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 119 transitions, 411 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:40:51,889 INFO L231 Difference]: Finished difference. Result has 90 places, 94 transitions, 232 flow [2025-03-17 19:40:51,889 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=90, PETRI_TRANSITIONS=94} [2025-03-17 19:40:51,890 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 2 predicate places. [2025-03-17 19:40:51,890 INFO L471 AbstractCegarLoop]: Abstraction has has 90 places, 94 transitions, 232 flow [2025-03-17 19:40:51,890 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:40:51,890 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:51,890 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:40:51,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-17 19:40:51,891 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:40:51,891 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:51,891 INFO L85 PathProgramCache]: Analyzing trace with hash -403521760, now seen corresponding path program 1 times [2025-03-17 19:40:51,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:51,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523655092] [2025-03-17 19:40:51,892 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:51,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:51,980 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:40:51,988 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:40:51,989 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:51,989 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:52,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:40:52,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:52,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523655092] [2025-03-17 19:40:52,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523655092] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:40:52,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:40:52,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:40:52,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432345211] [2025-03-17 19:40:52,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:40:52,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:40:52,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:52,066 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:40:52,066 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:40:52,084 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 98 [2025-03-17 19:40:52,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 94 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:40:52,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:52,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 98 [2025-03-17 19:40:52,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:53,088 INFO L124 PetriNetUnfolderBase]: 8277/14791 cut-off events. [2025-03-17 19:40:53,088 INFO L125 PetriNetUnfolderBase]: For 5256/5276 co-relation queries the response was YES. [2025-03-17 19:40:53,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29599 conditions, 14791 events. 8277/14791 cut-off events. For 5256/5276 co-relation queries the response was YES. Maximal size of possible extension queue 914. Compared 129084 event pairs, 2320 based on Foata normal form. 242/13002 useless extension candidates. Maximal degree in co-relation 16541. Up to 6444 conditions per place. [2025-03-17 19:40:53,186 INFO L140 encePairwiseOnDemand]: 94/98 looper letters, 64 selfloop transitions, 4 changer transitions 0/118 dead transitions. [2025-03-17 19:40:53,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 118 transitions, 417 flow [2025-03-17 19:40:53,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:40:53,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:40:53,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 278 transitions. [2025-03-17 19:40:53,187 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7091836734693877 [2025-03-17 19:40:53,187 INFO L175 Difference]: Start difference. First operand has 90 places, 94 transitions, 232 flow. Second operand 4 states and 278 transitions. [2025-03-17 19:40:53,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 118 transitions, 417 flow [2025-03-17 19:40:53,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 118 transitions, 409 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:40:53,235 INFO L231 Difference]: Finished difference. Result has 89 places, 93 transitions, 228 flow [2025-03-17 19:40:53,235 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=220, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=228, PETRI_PLACES=89, PETRI_TRANSITIONS=93} [2025-03-17 19:40:53,236 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 1 predicate places. [2025-03-17 19:40:53,236 INFO L471 AbstractCegarLoop]: Abstraction has has 89 places, 93 transitions, 228 flow [2025-03-17 19:40:53,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.25) internal successors, (217), 4 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:40:53,236 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:53,236 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:40:53,236 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-17 19:40:53,236 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:40:53,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:53,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1234139052, now seen corresponding path program 1 times [2025-03-17 19:40:53,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:53,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718533257] [2025-03-17 19:40:53,237 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:53,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:53,243 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-03-17 19:40:53,247 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-03-17 19:40:53,247 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:53,247 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:53,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:40:53,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:53,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718533257] [2025-03-17 19:40:53,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718533257] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:40:53,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:40:53,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:40:53,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907134209] [2025-03-17 19:40:53,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:40:53,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:40:53,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:53,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:40:53,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:40:53,338 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 98 [2025-03-17 19:40:53,339 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 93 transitions, 228 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:40:53,339 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:53,339 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 98 [2025-03-17 19:40:53,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:54,311 INFO L124 PetriNetUnfolderBase]: 13404/22499 cut-off events. [2025-03-17 19:40:54,311 INFO L125 PetriNetUnfolderBase]: For 7387/7744 co-relation queries the response was YES. [2025-03-17 19:40:54,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45219 conditions, 22499 events. 13404/22499 cut-off events. For 7387/7744 co-relation queries the response was YES. Maximal size of possible extension queue 1342. Compared 194482 event pairs, 4867 based on Foata normal form. 905/19695 useless extension candidates. Maximal degree in co-relation 26814. Up to 9225 conditions per place. [2025-03-17 19:40:54,403 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 97 selfloop transitions, 5 changer transitions 0/148 dead transitions. [2025-03-17 19:40:54,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 148 transitions, 596 flow [2025-03-17 19:40:54,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:40:54,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:40:54,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 303 transitions. [2025-03-17 19:40:54,405 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7729591836734694 [2025-03-17 19:40:54,405 INFO L175 Difference]: Start difference. First operand has 89 places, 93 transitions, 228 flow. Second operand 4 states and 303 transitions. [2025-03-17 19:40:54,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 148 transitions, 596 flow [2025-03-17 19:40:54,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 148 transitions, 576 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:40:54,449 INFO L231 Difference]: Finished difference. Result has 91 places, 95 transitions, 254 flow [2025-03-17 19:40:54,449 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=218, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=91, PETRI_TRANSITIONS=95} [2025-03-17 19:40:54,449 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 3 predicate places. [2025-03-17 19:40:54,449 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 95 transitions, 254 flow [2025-03-17 19:40:54,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:40:54,450 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:54,450 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:40:54,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-17 19:40:54,450 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:40:54,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:54,450 INFO L85 PathProgramCache]: Analyzing trace with hash 375726914, now seen corresponding path program 1 times [2025-03-17 19:40:54,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:54,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471614758] [2025-03-17 19:40:54,450 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:54,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:54,457 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:40:54,462 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:40:54,462 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:54,463 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:54,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:40:54,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:54,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471614758] [2025-03-17 19:40:54,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471614758] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:40:54,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:40:54,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:40:54,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372320228] [2025-03-17 19:40:54,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:40:54,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:40:54,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:54,553 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:40:54,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:40:54,574 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 98 [2025-03-17 19:40:54,575 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 95 transitions, 254 flow. Second operand has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:40:54,575 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:54,575 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 98 [2025-03-17 19:40:54,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:55,546 INFO L124 PetriNetUnfolderBase]: 13504/21740 cut-off events. [2025-03-17 19:40:55,546 INFO L125 PetriNetUnfolderBase]: For 6428/7153 co-relation queries the response was YES. [2025-03-17 19:40:55,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47069 conditions, 21740 events. 13504/21740 cut-off events. For 6428/7153 co-relation queries the response was YES. Maximal size of possible extension queue 1277. Compared 179533 event pairs, 2750 based on Foata normal form. 365/20182 useless extension candidates. Maximal degree in co-relation 28375. Up to 9338 conditions per place. [2025-03-17 19:40:55,783 INFO L140 encePairwiseOnDemand]: 92/98 looper letters, 95 selfloop transitions, 6 changer transitions 0/148 dead transitions. [2025-03-17 19:40:55,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 148 transitions, 604 flow [2025-03-17 19:40:55,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:40:55,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:40:55,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 355 transitions. [2025-03-17 19:40:55,786 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7244897959183674 [2025-03-17 19:40:55,786 INFO L175 Difference]: Start difference. First operand has 91 places, 95 transitions, 254 flow. Second operand 5 states and 355 transitions. [2025-03-17 19:40:55,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 148 transitions, 604 flow [2025-03-17 19:40:55,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 148 transitions, 604 flow, removed 0 selfloop flow, removed 0 redundant places. [2025-03-17 19:40:55,843 INFO L231 Difference]: Finished difference. Result has 94 places, 94 transitions, 264 flow [2025-03-17 19:40:55,843 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=264, PETRI_PLACES=94, PETRI_TRANSITIONS=94} [2025-03-17 19:40:55,843 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 6 predicate places. [2025-03-17 19:40:55,843 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 94 transitions, 264 flow [2025-03-17 19:40:55,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.4) internal successors, (267), 5 states have internal predecessors, (267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:40:55,844 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:55,844 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:40:55,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-17 19:40:55,844 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:40:55,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:55,845 INFO L85 PathProgramCache]: Analyzing trace with hash 375727907, now seen corresponding path program 1 times [2025-03-17 19:40:55,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:55,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491496394] [2025-03-17 19:40:55,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:55,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:55,853 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:40:55,858 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:40:55,860 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:55,860 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:55,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:40:55,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:55,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491496394] [2025-03-17 19:40:55,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491496394] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:40:55,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:40:55,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:40:55,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249046901] [2025-03-17 19:40:55,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:40:55,909 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:40:55,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:55,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:40:55,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:40:55,926 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 98 [2025-03-17 19:40:55,927 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 94 transitions, 264 flow. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:40:55,927 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:55,927 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 98 [2025-03-17 19:40:55,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:57,134 INFO L124 PetriNetUnfolderBase]: 10971/19605 cut-off events. [2025-03-17 19:40:57,134 INFO L125 PetriNetUnfolderBase]: For 10043/10625 co-relation queries the response was YES. [2025-03-17 19:40:57,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41976 conditions, 19605 events. 10971/19605 cut-off events. For 10043/10625 co-relation queries the response was YES. Maximal size of possible extension queue 1156. Compared 177376 event pairs, 5070 based on Foata normal form. 561/17942 useless extension candidates. Maximal degree in co-relation 25125. Up to 9302 conditions per place. [2025-03-17 19:40:57,264 INFO L140 encePairwiseOnDemand]: 93/98 looper letters, 97 selfloop transitions, 4 changer transitions 0/148 dead transitions. [2025-03-17 19:40:57,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 148 transitions, 612 flow [2025-03-17 19:40:57,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:40:57,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:40:57,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 300 transitions. [2025-03-17 19:40:57,266 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7653061224489796 [2025-03-17 19:40:57,266 INFO L175 Difference]: Start difference. First operand has 94 places, 94 transitions, 264 flow. Second operand 4 states and 300 transitions. [2025-03-17 19:40:57,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 148 transitions, 612 flow [2025-03-17 19:40:57,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 148 transitions, 600 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:40:57,324 INFO L231 Difference]: Finished difference. Result has 93 places, 93 transitions, 254 flow [2025-03-17 19:40:57,324 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=93, PETRI_TRANSITIONS=93} [2025-03-17 19:40:57,325 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 5 predicate places. [2025-03-17 19:40:57,325 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 93 transitions, 254 flow [2025-03-17 19:40:57,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:40:57,325 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:57,325 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:40:57,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-17 19:40:57,325 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:40:57,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:57,326 INFO L85 PathProgramCache]: Analyzing trace with hash 396395652, now seen corresponding path program 1 times [2025-03-17 19:40:57,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:57,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005948792] [2025-03-17 19:40:57,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:57,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:57,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-03-17 19:40:57,334 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-03-17 19:40:57,334 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:57,334 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:57,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:40:57,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:57,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005948792] [2025-03-17 19:40:57,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005948792] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:40:57,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:40:57,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:40:57,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744371799] [2025-03-17 19:40:57,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:40:57,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:40:57,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:57,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:40:57,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:40:57,442 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 98 [2025-03-17 19:40:57,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 93 transitions, 254 flow. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:40:57,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:57,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 98 [2025-03-17 19:40:57,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:58,140 INFO L124 PetriNetUnfolderBase]: 9874/18502 cut-off events. [2025-03-17 19:40:58,140 INFO L125 PetriNetUnfolderBase]: For 8279/8557 co-relation queries the response was YES. [2025-03-17 19:40:58,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38536 conditions, 18502 events. 9874/18502 cut-off events. For 8279/8557 co-relation queries the response was YES. Maximal size of possible extension queue 1132. Compared 173135 event pairs, 2742 based on Foata normal form. 278/16629 useless extension candidates. Maximal degree in co-relation 23740. Up to 7590 conditions per place. [2025-03-17 19:40:58,253 INFO L140 encePairwiseOnDemand]: 94/98 looper letters, 66 selfloop transitions, 4 changer transitions 0/118 dead transitions. [2025-03-17 19:40:58,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 118 transitions, 470 flow [2025-03-17 19:40:58,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:40:58,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:40:58,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 281 transitions. [2025-03-17 19:40:58,254 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7168367346938775 [2025-03-17 19:40:58,254 INFO L175 Difference]: Start difference. First operand has 93 places, 93 transitions, 254 flow. Second operand 4 states and 281 transitions. [2025-03-17 19:40:58,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 118 transitions, 470 flow [2025-03-17 19:40:58,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 118 transitions, 459 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:40:58,343 INFO L231 Difference]: Finished difference. Result has 93 places, 92 transitions, 254 flow [2025-03-17 19:40:58,344 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=254, PETRI_PLACES=93, PETRI_TRANSITIONS=92} [2025-03-17 19:40:58,344 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 5 predicate places. [2025-03-17 19:40:58,344 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 92 transitions, 254 flow [2025-03-17 19:40:58,344 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:40:58,344 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:58,344 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:40:58,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2025-03-17 19:40:58,344 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:40:58,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:58,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1237366973, now seen corresponding path program 1 times [2025-03-17 19:40:58,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:58,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583332110] [2025-03-17 19:40:58,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:58,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:58,349 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:40:58,354 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:40:58,355 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:58,355 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:58,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:40:58,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:58,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583332110] [2025-03-17 19:40:58,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583332110] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:40:58,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:40:58,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:40:58,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192817189] [2025-03-17 19:40:58,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:40:58,427 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:40:58,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:58,429 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:40:58,429 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:40:58,463 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 98 [2025-03-17 19:40:58,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 92 transitions, 254 flow. Second operand has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:40:58,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:58,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 98 [2025-03-17 19:40:58,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:40:59,505 INFO L124 PetriNetUnfolderBase]: 13238/21147 cut-off events. [2025-03-17 19:40:59,505 INFO L125 PetriNetUnfolderBase]: For 11084/11828 co-relation queries the response was YES. [2025-03-17 19:40:59,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47001 conditions, 21147 events. 13238/21147 cut-off events. For 11084/11828 co-relation queries the response was YES. Maximal size of possible extension queue 1258. Compared 172855 event pairs, 2731 based on Foata normal form. 916/20140 useless extension candidates. Maximal degree in co-relation 27940. Up to 5350 conditions per place. [2025-03-17 19:40:59,599 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 119 selfloop transitions, 9 changer transitions 0/173 dead transitions. [2025-03-17 19:40:59,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 173 transitions, 753 flow [2025-03-17 19:40:59,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:40:59,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:40:59,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 413 transitions. [2025-03-17 19:40:59,601 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7023809523809523 [2025-03-17 19:40:59,601 INFO L175 Difference]: Start difference. First operand has 93 places, 92 transitions, 254 flow. Second operand 6 states and 413 transitions. [2025-03-17 19:40:59,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 173 transitions, 753 flow [2025-03-17 19:40:59,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 173 transitions, 727 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:40:59,647 INFO L231 Difference]: Finished difference. Result has 95 places, 92 transitions, 271 flow [2025-03-17 19:40:59,647 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=271, PETRI_PLACES=95, PETRI_TRANSITIONS=92} [2025-03-17 19:40:59,647 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 7 predicate places. [2025-03-17 19:40:59,647 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 92 transitions, 271 flow [2025-03-17 19:40:59,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.166666666666664) internal successors, (301), 6 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:40:59,647 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:40:59,647 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:40:59,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2025-03-17 19:40:59,648 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:40:59,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:40:59,648 INFO L85 PathProgramCache]: Analyzing trace with hash -596666824, now seen corresponding path program 1 times [2025-03-17 19:40:59,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:40:59,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114642936] [2025-03-17 19:40:59,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:40:59,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:40:59,652 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:40:59,655 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:40:59,655 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:40:59,655 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:40:59,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:40:59,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:40:59,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114642936] [2025-03-17 19:40:59,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114642936] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:40:59,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:40:59,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:40:59,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124472173] [2025-03-17 19:40:59,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:40:59,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:40:59,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:40:59,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:40:59,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:40:59,710 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 98 [2025-03-17 19:40:59,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 92 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:40:59,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:40:59,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 98 [2025-03-17 19:40:59,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:41:00,432 INFO L124 PetriNetUnfolderBase]: 9895/18165 cut-off events. [2025-03-17 19:41:00,432 INFO L125 PetriNetUnfolderBase]: For 16408/17268 co-relation queries the response was YES. [2025-03-17 19:41:00,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40253 conditions, 18165 events. 9895/18165 cut-off events. For 16408/17268 co-relation queries the response was YES. Maximal size of possible extension queue 1101. Compared 166014 event pairs, 2743 based on Foata normal form. 972/17091 useless extension candidates. Maximal degree in co-relation 24156. Up to 7864 conditions per place. [2025-03-17 19:41:00,545 INFO L140 encePairwiseOnDemand]: 94/98 looper letters, 69 selfloop transitions, 4 changer transitions 0/118 dead transitions. [2025-03-17 19:41:00,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 118 transitions, 505 flow [2025-03-17 19:41:00,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:41:00,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:41:00,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 277 transitions. [2025-03-17 19:41:00,547 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7066326530612245 [2025-03-17 19:41:00,547 INFO L175 Difference]: Start difference. First operand has 95 places, 92 transitions, 271 flow. Second operand 4 states and 277 transitions. [2025-03-17 19:41:00,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 118 transitions, 505 flow [2025-03-17 19:41:00,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 118 transitions, 483 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:41:00,634 INFO L231 Difference]: Finished difference. Result has 93 places, 91 transitions, 262 flow [2025-03-17 19:41:00,635 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=93, PETRI_TRANSITIONS=91} [2025-03-17 19:41:00,635 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 5 predicate places. [2025-03-17 19:41:00,635 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 91 transitions, 262 flow [2025-03-17 19:41:00,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 54.75) internal successors, (219), 4 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:00,635 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:41:00,635 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:41:00,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2025-03-17 19:41:00,636 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:41:00,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:41:00,636 INFO L85 PathProgramCache]: Analyzing trace with hash 204922063, now seen corresponding path program 1 times [2025-03-17 19:41:00,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:41:00,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635694640] [2025-03-17 19:41:00,636 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:41:00,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:41:00,640 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-17 19:41:00,643 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-17 19:41:00,643 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:41:00,643 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:00,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:41:00,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:41:00,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635694640] [2025-03-17 19:41:00,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635694640] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:41:00,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:41:00,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:41:00,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936574042] [2025-03-17 19:41:00,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:41:00,670 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:41:00,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:41:00,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:41:00,670 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:41:00,688 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 98 [2025-03-17 19:41:00,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 91 transitions, 262 flow. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:00,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:41:00,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 98 [2025-03-17 19:41:00,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:41:01,729 INFO L124 PetriNetUnfolderBase]: 15805/26797 cut-off events. [2025-03-17 19:41:01,729 INFO L125 PetriNetUnfolderBase]: For 20033/21762 co-relation queries the response was YES. [2025-03-17 19:41:01,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59719 conditions, 26797 events. 15805/26797 cut-off events. For 20033/21762 co-relation queries the response was YES. Maximal size of possible extension queue 1495. Compared 239724 event pairs, 6215 based on Foata normal form. 2108/25461 useless extension candidates. Maximal degree in co-relation 36288. Up to 11475 conditions per place. [2025-03-17 19:41:01,909 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 104 selfloop transitions, 5 changer transitions 0/150 dead transitions. [2025-03-17 19:41:01,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 150 transitions, 702 flow [2025-03-17 19:41:01,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:41:01,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:41:01,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 301 transitions. [2025-03-17 19:41:01,910 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7678571428571429 [2025-03-17 19:41:01,910 INFO L175 Difference]: Start difference. First operand has 93 places, 91 transitions, 262 flow. Second operand 4 states and 301 transitions. [2025-03-17 19:41:01,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 150 transitions, 702 flow [2025-03-17 19:41:01,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 150 transitions, 682 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:41:01,985 INFO L231 Difference]: Finished difference. Result has 95 places, 93 transitions, 288 flow [2025-03-17 19:41:01,985 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=288, PETRI_PLACES=95, PETRI_TRANSITIONS=93} [2025-03-17 19:41:01,986 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 7 predicate places. [2025-03-17 19:41:01,986 INFO L471 AbstractCegarLoop]: Abstraction has has 95 places, 93 transitions, 288 flow [2025-03-17 19:41:01,986 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:01,986 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:41:01,986 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:41:01,986 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2025-03-17 19:41:01,986 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:41:01,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:41:01,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1215019017, now seen corresponding path program 1 times [2025-03-17 19:41:01,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:41:01,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118082816] [2025-03-17 19:41:01,987 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:41:01,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:41:01,991 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:41:01,995 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:41:01,996 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:41:01,996 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:02,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:41:02,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:41:02,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118082816] [2025-03-17 19:41:02,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118082816] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:41:02,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:41:02,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:41:02,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251470865] [2025-03-17 19:41:02,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:41:02,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:41:02,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:41:02,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:41:02,032 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:41:02,044 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 98 [2025-03-17 19:41:02,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 93 transitions, 288 flow. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:02,045 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:41:02,045 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 98 [2025-03-17 19:41:02,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:41:03,174 INFO L124 PetriNetUnfolderBase]: 15743/26401 cut-off events. [2025-03-17 19:41:03,174 INFO L125 PetriNetUnfolderBase]: For 19420/20602 co-relation queries the response was YES. [2025-03-17 19:41:03,245 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61339 conditions, 26401 events. 15743/26401 cut-off events. For 19420/20602 co-relation queries the response was YES. Maximal size of possible extension queue 1468. Compared 234446 event pairs, 6223 based on Foata normal form. 1307/25637 useless extension candidates. Maximal degree in co-relation 38904. Up to 11469 conditions per place. [2025-03-17 19:41:03,329 INFO L140 encePairwiseOnDemand]: 93/98 looper letters, 102 selfloop transitions, 5 changer transitions 0/151 dead transitions. [2025-03-17 19:41:03,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 151 transitions, 695 flow [2025-03-17 19:41:03,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:41:03,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:41:03,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 298 transitions. [2025-03-17 19:41:03,330 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7602040816326531 [2025-03-17 19:41:03,330 INFO L175 Difference]: Start difference. First operand has 95 places, 93 transitions, 288 flow. Second operand 4 states and 298 transitions. [2025-03-17 19:41:03,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 151 transitions, 695 flow [2025-03-17 19:41:03,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 151 transitions, 692 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:41:03,366 INFO L231 Difference]: Finished difference. Result has 97 places, 93 transitions, 298 flow [2025-03-17 19:41:03,367 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=97, PETRI_TRANSITIONS=93} [2025-03-17 19:41:03,367 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 9 predicate places. [2025-03-17 19:41:03,367 INFO L471 AbstractCegarLoop]: Abstraction has has 97 places, 93 transitions, 298 flow [2025-03-17 19:41:03,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:03,367 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:41:03,367 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:41:03,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2025-03-17 19:41:03,367 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:41:03,368 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:41:03,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1316802746, now seen corresponding path program 1 times [2025-03-17 19:41:03,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:41:03,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363658392] [2025-03-17 19:41:03,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:41:03,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:41:03,372 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:41:03,375 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:41:03,375 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:41:03,375 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:03,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:41:03,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:41:03,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363658392] [2025-03-17 19:41:03,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363658392] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:41:03,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:41:03,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:41:03,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12632809] [2025-03-17 19:41:03,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:41:03,423 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:41:03,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:41:03,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:41:03,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:41:03,451 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 98 [2025-03-17 19:41:03,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 93 transitions, 298 flow. Second operand has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:03,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:41:03,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 98 [2025-03-17 19:41:03,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:41:04,634 INFO L124 PetriNetUnfolderBase]: 17451/28282 cut-off events. [2025-03-17 19:41:04,635 INFO L125 PetriNetUnfolderBase]: For 27736/29652 co-relation queries the response was YES. [2025-03-17 19:41:04,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70061 conditions, 28282 events. 17451/28282 cut-off events. For 27736/29652 co-relation queries the response was YES. Maximal size of possible extension queue 1571. Compared 241084 event pairs, 3597 based on Foata normal form. 1578/28149 useless extension candidates. Maximal degree in co-relation 56050. Up to 12158 conditions per place. [2025-03-17 19:41:04,826 INFO L140 encePairwiseOnDemand]: 92/98 looper letters, 105 selfloop transitions, 6 changer transitions 0/152 dead transitions. [2025-03-17 19:41:04,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 152 transitions, 754 flow [2025-03-17 19:41:04,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:41:04,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:41:04,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 353 transitions. [2025-03-17 19:41:04,827 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7204081632653061 [2025-03-17 19:41:04,827 INFO L175 Difference]: Start difference. First operand has 97 places, 93 transitions, 298 flow. Second operand 5 states and 353 transitions. [2025-03-17 19:41:04,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 152 transitions, 754 flow [2025-03-17 19:41:04,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 152 transitions, 742 flow, removed 0 selfloop flow, removed 1 redundant places. [2025-03-17 19:41:04,947 INFO L231 Difference]: Finished difference. Result has 99 places, 92 transitions, 304 flow [2025-03-17 19:41:04,947 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=292, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=304, PETRI_PLACES=99, PETRI_TRANSITIONS=92} [2025-03-17 19:41:04,947 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 11 predicate places. [2025-03-17 19:41:04,948 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 92 transitions, 304 flow [2025-03-17 19:41:04,948 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 53.8) internal successors, (269), 5 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:04,948 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:41:04,948 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:41:04,948 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2025-03-17 19:41:04,948 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:41:04,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:41:04,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1316801753, now seen corresponding path program 1 times [2025-03-17 19:41:04,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:41:04,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758295282] [2025-03-17 19:41:04,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:41:04,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:41:04,952 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:41:04,955 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:41:04,955 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:41:04,955 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:04,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:41:04,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:41:04,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758295282] [2025-03-17 19:41:04,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758295282] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:41:04,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:41:04,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:41:04,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384250129] [2025-03-17 19:41:04,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:41:04,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:41:04,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:41:04,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:41:04,976 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:41:04,992 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 98 [2025-03-17 19:41:04,993 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 92 transitions, 304 flow. Second operand has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:04,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:41:04,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 98 [2025-03-17 19:41:04,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:41:06,615 INFO L124 PetriNetUnfolderBase]: 14213/25710 cut-off events. [2025-03-17 19:41:06,615 INFO L125 PetriNetUnfolderBase]: For 25053/26482 co-relation queries the response was YES. [2025-03-17 19:41:06,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61258 conditions, 25710 events. 14213/25710 cut-off events. For 25053/26482 co-relation queries the response was YES. Maximal size of possible extension queue 1428. Compared 242452 event pairs, 6758 based on Foata normal form. 1569/25146 useless extension candidates. Maximal degree in co-relation 49289. Up to 12033 conditions per place. [2025-03-17 19:41:06,813 INFO L140 encePairwiseOnDemand]: 93/98 looper letters, 107 selfloop transitions, 4 changer transitions 0/152 dead transitions. [2025-03-17 19:41:06,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 152 transitions, 750 flow [2025-03-17 19:41:06,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:41:06,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:41:06,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 298 transitions. [2025-03-17 19:41:06,815 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7602040816326531 [2025-03-17 19:41:06,815 INFO L175 Difference]: Start difference. First operand has 99 places, 92 transitions, 304 flow. Second operand 4 states and 298 transitions. [2025-03-17 19:41:06,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 152 transitions, 750 flow [2025-03-17 19:41:06,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 152 transitions, 738 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:41:06,928 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 294 flow [2025-03-17 19:41:06,929 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2025-03-17 19:41:06,929 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 10 predicate places. [2025-03-17 19:41:06,929 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 294 flow [2025-03-17 19:41:06,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.0) internal successors, (212), 4 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:06,929 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:41:06,930 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:41:06,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2025-03-17 19:41:06,930 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:41:06,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:41:06,930 INFO L85 PathProgramCache]: Analyzing trace with hash 2057617285, now seen corresponding path program 1 times [2025-03-17 19:41:06,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:41:06,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090259631] [2025-03-17 19:41:06,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:41:06,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:41:06,935 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-03-17 19:41:06,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-03-17 19:41:06,941 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:41:06,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:41:06,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:41:06,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090259631] [2025-03-17 19:41:06,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090259631] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:41:06,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:41:06,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:41:06,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234421422] [2025-03-17 19:41:06,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:41:06,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:41:06,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:41:06,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:41:06,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:41:06,991 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 98 [2025-03-17 19:41:06,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 294 flow. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:06,992 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:41:06,992 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 98 [2025-03-17 19:41:06,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:41:08,245 INFO L124 PetriNetUnfolderBase]: 12793/24173 cut-off events. [2025-03-17 19:41:08,245 INFO L125 PetriNetUnfolderBase]: For 20995/22141 co-relation queries the response was YES. [2025-03-17 19:41:08,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55494 conditions, 24173 events. 12793/24173 cut-off events. For 20995/22141 co-relation queries the response was YES. Maximal size of possible extension queue 1346. Compared 236176 event pairs, 4024 based on Foata normal form. 1146/23178 useless extension candidates. Maximal degree in co-relation 44746. Up to 8949 conditions per place. [2025-03-17 19:41:08,418 INFO L140 encePairwiseOnDemand]: 94/98 looper letters, 73 selfloop transitions, 4 changer transitions 0/119 dead transitions. [2025-03-17 19:41:08,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 119 transitions, 562 flow [2025-03-17 19:41:08,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:41:08,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:41:08,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 280 transitions. [2025-03-17 19:41:08,420 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7142857142857143 [2025-03-17 19:41:08,420 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 294 flow. Second operand 4 states and 280 transitions. [2025-03-17 19:41:08,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 119 transitions, 562 flow [2025-03-17 19:41:08,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 119 transitions, 551 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:41:08,555 INFO L231 Difference]: Finished difference. Result has 98 places, 90 transitions, 294 flow [2025-03-17 19:41:08,555 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=286, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=98, PETRI_TRANSITIONS=90} [2025-03-17 19:41:08,556 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 10 predicate places. [2025-03-17 19:41:08,556 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 90 transitions, 294 flow [2025-03-17 19:41:08,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:08,556 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:41:08,556 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:41:08,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2025-03-17 19:41:08,556 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:41:08,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:41:08,556 INFO L85 PathProgramCache]: Analyzing trace with hash 2128788443, now seen corresponding path program 1 times [2025-03-17 19:41:08,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:41:08,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545623740] [2025-03-17 19:41:08,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:41:08,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:41:08,560 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:41:08,562 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:41:08,563 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:41:08,563 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:08,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:41:08,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:41:08,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545623740] [2025-03-17 19:41:08,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545623740] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:41:08,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:41:08,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:41:08,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003664228] [2025-03-17 19:41:08,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:41:08,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:41:08,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:41:08,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:41:08,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:41:08,638 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 98 [2025-03-17 19:41:08,638 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 90 transitions, 294 flow. Second operand has 6 states, 6 states have (on average 50.5) internal successors, (303), 6 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:08,638 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:41:08,638 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 98 [2025-03-17 19:41:08,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:41:09,853 INFO L124 PetriNetUnfolderBase]: 17101/27512 cut-off events. [2025-03-17 19:41:09,853 INFO L125 PetriNetUnfolderBase]: For 28705/30631 co-relation queries the response was YES. [2025-03-17 19:41:09,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68603 conditions, 27512 events. 17101/27512 cut-off events. For 28705/30631 co-relation queries the response was YES. Maximal size of possible extension queue 1565. Compared 232299 event pairs, 3587 based on Foata normal form. 2288/28089 useless extension candidates. Maximal degree in co-relation 55052. Up to 6910 conditions per place. [2025-03-17 19:41:10,068 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 132 selfloop transitions, 9 changer transitions 0/180 dead transitions. [2025-03-17 19:41:10,068 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 180 transitions, 936 flow [2025-03-17 19:41:10,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:41:10,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:41:10,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 410 transitions. [2025-03-17 19:41:10,070 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6972789115646258 [2025-03-17 19:41:10,070 INFO L175 Difference]: Start difference. First operand has 98 places, 90 transitions, 294 flow. Second operand 6 states and 410 transitions. [2025-03-17 19:41:10,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 180 transitions, 936 flow [2025-03-17 19:41:10,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 180 transitions, 910 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:41:10,180 INFO L231 Difference]: Finished difference. Result has 100 places, 90 transitions, 311 flow [2025-03-17 19:41:10,180 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=311, PETRI_PLACES=100, PETRI_TRANSITIONS=90} [2025-03-17 19:41:10,181 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 12 predicate places. [2025-03-17 19:41:10,181 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 90 transitions, 311 flow [2025-03-17 19:41:10,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.5) internal successors, (303), 6 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:10,181 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:41:10,181 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:41:10,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2025-03-17 19:41:10,181 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:41:10,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:41:10,181 INFO L85 PathProgramCache]: Analyzing trace with hash -638403725, now seen corresponding path program 1 times [2025-03-17 19:41:10,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:41:10,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702027974] [2025-03-17 19:41:10,182 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:41:10,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:41:10,186 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-17 19:41:10,189 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-17 19:41:10,190 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:41:10,190 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:10,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:41:10,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:41:10,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702027974] [2025-03-17 19:41:10,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702027974] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:41:10,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:41:10,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-03-17 19:41:10,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482695673] [2025-03-17 19:41:10,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:41:10,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:41:10,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:41:10,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:41:10,220 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:41:10,237 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 98 [2025-03-17 19:41:10,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 90 transitions, 311 flow. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:10,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:41:10,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 98 [2025-03-17 19:41:10,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:41:11,368 INFO L124 PetriNetUnfolderBase]: 12814/23713 cut-off events. [2025-03-17 19:41:11,368 INFO L125 PetriNetUnfolderBase]: For 31300/33155 co-relation queries the response was YES. [2025-03-17 19:41:11,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57843 conditions, 23713 events. 12814/23713 cut-off events. For 31300/33155 co-relation queries the response was YES. Maximal size of possible extension queue 1300. Compared 226415 event pairs, 4044 based on Foata normal form. 1991/23733 useless extension candidates. Maximal degree in co-relation 46739. Up to 9274 conditions per place. [2025-03-17 19:41:11,509 INFO L140 encePairwiseOnDemand]: 94/98 looper letters, 76 selfloop transitions, 4 changer transitions 0/119 dead transitions. [2025-03-17 19:41:11,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 119 transitions, 597 flow [2025-03-17 19:41:11,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:41:11,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:41:11,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 276 transitions. [2025-03-17 19:41:11,511 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7040816326530612 [2025-03-17 19:41:11,511 INFO L175 Difference]: Start difference. First operand has 100 places, 90 transitions, 311 flow. Second operand 4 states and 276 transitions. [2025-03-17 19:41:11,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 119 transitions, 597 flow [2025-03-17 19:41:11,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 119 transitions, 575 flow, removed 0 selfloop flow, removed 4 redundant places. [2025-03-17 19:41:11,600 INFO L231 Difference]: Finished difference. Result has 98 places, 89 transitions, 302 flow [2025-03-17 19:41:11,600 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=302, PETRI_PLACES=98, PETRI_TRANSITIONS=89} [2025-03-17 19:41:11,600 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 10 predicate places. [2025-03-17 19:41:11,601 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 302 flow [2025-03-17 19:41:11,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:11,601 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:41:11,601 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:41:11,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2025-03-17 19:41:11,601 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:41:11,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:41:11,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1808345459, now seen corresponding path program 1 times [2025-03-17 19:41:11,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:41:11,605 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074976594] [2025-03-17 19:41:11,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:41:11,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:41:11,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:41:11,615 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:41:11,615 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:41:11,615 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:11,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:41:11,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:41:11,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074976594] [2025-03-17 19:41:11,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074976594] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:41:11,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:41:11,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:41:11,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070151442] [2025-03-17 19:41:11,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:41:11,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:41:11,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:41:11,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:41:11,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:41:11,696 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 98 [2025-03-17 19:41:11,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 302 flow. Second operand has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:11,697 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:41:11,697 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 98 [2025-03-17 19:41:11,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:41:13,015 INFO L124 PetriNetUnfolderBase]: 17089/27301 cut-off events. [2025-03-17 19:41:13,016 INFO L125 PetriNetUnfolderBase]: For 29419/30933 co-relation queries the response was YES. [2025-03-17 19:41:13,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70598 conditions, 27301 events. 17089/27301 cut-off events. For 29419/30933 co-relation queries the response was YES. Maximal size of possible extension queue 1512. Compared 226804 event pairs, 6748 based on Foata normal form. 1864/27553 useless extension candidates. Maximal degree in co-relation 56678. Up to 12383 conditions per place. [2025-03-17 19:41:13,224 INFO L140 encePairwiseOnDemand]: 91/98 looper letters, 166 selfloop transitions, 8 changer transitions 0/210 dead transitions. [2025-03-17 19:41:13,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 210 transitions, 1132 flow [2025-03-17 19:41:13,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:41:13,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:41:13,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 439 transitions. [2025-03-17 19:41:13,225 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7465986394557823 [2025-03-17 19:41:13,225 INFO L175 Difference]: Start difference. First operand has 98 places, 89 transitions, 302 flow. Second operand 6 states and 439 transitions. [2025-03-17 19:41:13,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 210 transitions, 1132 flow [2025-03-17 19:41:13,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 210 transitions, 1095 flow, removed 1 selfloop flow, removed 4 redundant places. [2025-03-17 19:41:13,484 INFO L231 Difference]: Finished difference. Result has 100 places, 90 transitions, 318 flow [2025-03-17 19:41:13,485 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=318, PETRI_PLACES=100, PETRI_TRANSITIONS=90} [2025-03-17 19:41:13,485 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 12 predicate places. [2025-03-17 19:41:13,485 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 90 transitions, 318 flow [2025-03-17 19:41:13,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.0) internal successors, (255), 5 states have internal predecessors, (255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:13,485 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:41:13,485 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:41:13,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2025-03-17 19:41:13,486 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:41:13,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:41:13,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1684321640, now seen corresponding path program 1 times [2025-03-17 19:41:13,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:41:13,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550267203] [2025-03-17 19:41:13,486 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:41:13,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:41:13,490 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:41:13,492 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:41:13,492 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:41:13,492 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:13,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:41:13,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:41:13,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550267203] [2025-03-17 19:41:13,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550267203] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:41:13,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:41:13,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:41:13,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378471262] [2025-03-17 19:41:13,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:41:13,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-17 19:41:13,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:41:13,513 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-17 19:41:13,513 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-17 19:41:13,528 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 98 [2025-03-17 19:41:13,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 90 transitions, 318 flow. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:13,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:41:13,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 98 [2025-03-17 19:41:13,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:41:14,715 INFO L124 PetriNetUnfolderBase]: 14303/24867 cut-off events. [2025-03-17 19:41:14,715 INFO L125 PetriNetUnfolderBase]: For 38884/40809 co-relation queries the response was YES. [2025-03-17 19:41:14,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62666 conditions, 24867 events. 14303/24867 cut-off events. For 38884/40809 co-relation queries the response was YES. Maximal size of possible extension queue 1351. Compared 225411 event pairs, 7060 based on Foata normal form. 2250/25146 useless extension candidates. Maximal degree in co-relation 50454. Up to 12508 conditions per place. [2025-03-17 19:41:14,858 INFO L140 encePairwiseOnDemand]: 93/98 looper letters, 111 selfloop transitions, 4 changer transitions 0/152 dead transitions. [2025-03-17 19:41:14,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 152 transitions, 820 flow [2025-03-17 19:41:14,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-17 19:41:14,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2025-03-17 19:41:14,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 296 transitions. [2025-03-17 19:41:14,859 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7551020408163265 [2025-03-17 19:41:14,859 INFO L175 Difference]: Start difference. First operand has 100 places, 90 transitions, 318 flow. Second operand 4 states and 296 transitions. [2025-03-17 19:41:14,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 152 transitions, 820 flow [2025-03-17 19:41:14,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 152 transitions, 777 flow, removed 9 selfloop flow, removed 5 redundant places. [2025-03-17 19:41:14,952 INFO L231 Difference]: Finished difference. Result has 98 places, 89 transitions, 301 flow [2025-03-17 19:41:14,952 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=301, PETRI_PLACES=98, PETRI_TRANSITIONS=89} [2025-03-17 19:41:14,952 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 10 predicate places. [2025-03-17 19:41:14,952 INFO L471 AbstractCegarLoop]: Abstraction has has 98 places, 89 transitions, 301 flow [2025-03-17 19:41:14,952 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:14,952 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:41:14,952 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:41:14,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2025-03-17 19:41:14,952 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:41:14,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:41:14,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1684320647, now seen corresponding path program 1 times [2025-03-17 19:41:14,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:41:14,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379825687] [2025-03-17 19:41:14,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:41:14,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:41:14,956 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-17 19:41:14,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-17 19:41:14,960 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:41:14,960 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:15,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:41:15,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:41:15,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379825687] [2025-03-17 19:41:15,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379825687] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:41:15,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:41:15,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-17 19:41:15,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458951299] [2025-03-17 19:41:15,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:41:15,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:41:15,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:41:15,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:41:15,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:41:15,029 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 98 [2025-03-17 19:41:15,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 89 transitions, 301 flow. Second operand has 5 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:15,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:41:15,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 98 [2025-03-17 19:41:15,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:41:16,318 INFO L124 PetriNetUnfolderBase]: 17024/26790 cut-off events. [2025-03-17 19:41:16,318 INFO L125 PetriNetUnfolderBase]: For 33223/35654 co-relation queries the response was YES. [2025-03-17 19:41:16,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68674 conditions, 26790 events. 17024/26790 cut-off events. For 33223/35654 co-relation queries the response was YES. Maximal size of possible extension queue 1425. Compared 218354 event pairs, 4044 based on Foata normal form. 2431/27900 useless extension candidates. Maximal degree in co-relation 55134. Up to 11413 conditions per place. [2025-03-17 19:41:16,552 INFO L140 encePairwiseOnDemand]: 92/98 looper letters, 109 selfloop transitions, 6 changer transitions 0/150 dead transitions. [2025-03-17 19:41:16,552 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 150 transitions, 781 flow [2025-03-17 19:41:16,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-17 19:41:16,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2025-03-17 19:41:16,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 351 transitions. [2025-03-17 19:41:16,553 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7163265306122449 [2025-03-17 19:41:16,553 INFO L175 Difference]: Start difference. First operand has 98 places, 89 transitions, 301 flow. Second operand 5 states and 351 transitions. [2025-03-17 19:41:16,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 150 transitions, 781 flow [2025-03-17 19:41:16,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 150 transitions, 775 flow, removed 0 selfloop flow, removed 2 redundant places. [2025-03-17 19:41:16,660 INFO L231 Difference]: Finished difference. Result has 99 places, 88 transitions, 305 flow [2025-03-17 19:41:16,661 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=305, PETRI_PLACES=99, PETRI_TRANSITIONS=88} [2025-03-17 19:41:16,661 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 11 predicate places. [2025-03-17 19:41:16,661 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 88 transitions, 305 flow [2025-03-17 19:41:16,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 54.2) internal successors, (271), 5 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:16,661 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:41:16,661 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:41:16,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2025-03-17 19:41:16,661 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:41:16,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:41:16,662 INFO L85 PathProgramCache]: Analyzing trace with hash 674333142, now seen corresponding path program 1 times [2025-03-17 19:41:16,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:41:16,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219227382] [2025-03-17 19:41:16,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:41:16,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:41:16,668 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-17 19:41:16,671 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-17 19:41:16,674 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:41:16,674 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:16,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:41:16,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:41:16,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219227382] [2025-03-17 19:41:16,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219227382] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:41:16,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:41:16,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-17 19:41:16,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682578755] [2025-03-17 19:41:16,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:41:16,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-17 19:41:16,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:41:16,719 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-17 19:41:16,719 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-03-17 19:41:16,747 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 98 [2025-03-17 19:41:16,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 88 transitions, 305 flow. Second operand has 6 states, 6 states have (on average 50.833333333333336) internal successors, (305), 6 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:16,748 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:41:16,748 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 98 [2025-03-17 19:41:16,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:41:17,934 INFO L124 PetriNetUnfolderBase]: 17024/26465 cut-off events. [2025-03-17 19:41:17,934 INFO L125 PetriNetUnfolderBase]: For 37448/39879 co-relation queries the response was YES. [2025-03-17 19:41:18,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69000 conditions, 26465 events. 17024/26465 cut-off events. For 37448/39879 co-relation queries the response was YES. Maximal size of possible extension queue 1433. Compared 212148 event pairs, 4044 based on Foata normal form. 3081/28225 useless extension candidates. Maximal degree in co-relation 55412. Up to 7579 conditions per place. [2025-03-17 19:41:18,097 INFO L140 encePairwiseOnDemand]: 90/98 looper letters, 137 selfloop transitions, 9 changer transitions 0/181 dead transitions. [2025-03-17 19:41:18,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 181 transitions, 975 flow [2025-03-17 19:41:18,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:41:18,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:41:18,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 407 transitions. [2025-03-17 19:41:18,098 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6921768707482994 [2025-03-17 19:41:18,099 INFO L175 Difference]: Start difference. First operand has 99 places, 88 transitions, 305 flow. Second operand 6 states and 407 transitions. [2025-03-17 19:41:18,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 181 transitions, 975 flow [2025-03-17 19:41:18,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 181 transitions, 966 flow, removed 0 selfloop flow, removed 3 redundant places. [2025-03-17 19:41:18,204 INFO L231 Difference]: Finished difference. Result has 101 places, 88 transitions, 321 flow [2025-03-17 19:41:18,205 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=321, PETRI_PLACES=101, PETRI_TRANSITIONS=88} [2025-03-17 19:41:18,205 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 13 predicate places. [2025-03-17 19:41:18,205 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 88 transitions, 321 flow [2025-03-17 19:41:18,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 50.833333333333336) internal successors, (305), 6 states have internal predecessors, (305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:18,205 INFO L198 CegarLoopForPetriNet]: Found error trace [2025-03-17 19:41:18,205 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:41:18,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2025-03-17 19:41:18,205 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2025-03-17 19:41:18,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-17 19:41:18,206 INFO L85 PathProgramCache]: Analyzing trace with hash 348180494, now seen corresponding path program 1 times [2025-03-17 19:41:18,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-17 19:41:18,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092914084] [2025-03-17 19:41:18,206 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-17 19:41:18,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-17 19:41:18,210 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-17 19:41:18,212 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-17 19:41:18,213 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-17 19:41:18,213 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-17 19:41:18,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-17 19:41:18,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-17 19:41:18,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092914084] [2025-03-17 19:41:18,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092914084] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-17 19:41:18,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-17 19:41:18,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-17 19:41:18,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561945081] [2025-03-17 19:41:18,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-17 19:41:18,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-17 19:41:18,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-17 19:41:18,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-17 19:41:18,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-17 19:41:18,259 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 49 out of 98 [2025-03-17 19:41:18,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 88 transitions, 321 flow. Second operand has 5 states, 5 states have (on average 51.4) internal successors, (257), 5 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:18,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2025-03-17 19:41:18,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 49 of 98 [2025-03-17 19:41:18,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2025-03-17 19:41:19,598 INFO L124 PetriNetUnfolderBase]: 17024/25642 cut-off events. [2025-03-17 19:41:19,598 INFO L125 PetriNetUnfolderBase]: For 39854/42238 co-relation queries the response was YES. [2025-03-17 19:41:19,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70872 conditions, 25642 events. 17024/25642 cut-off events. For 39854/42238 co-relation queries the response was YES. Maximal size of possible extension queue 1407. Compared 197413 event pairs, 7060 based on Foata normal form. 2709/27679 useless extension candidates. Maximal degree in co-relation 56947. Up to 12833 conditions per place. [2025-03-17 19:41:19,658 INFO L140 encePairwiseOnDemand]: 91/98 looper letters, 0 selfloop transitions, 0 changer transitions 213/213 dead transitions. [2025-03-17 19:41:19,659 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 213 transitions, 1187 flow [2025-03-17 19:41:19,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-17 19:41:19,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2025-03-17 19:41:19,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 435 transitions. [2025-03-17 19:41:19,660 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7397959183673469 [2025-03-17 19:41:19,660 INFO L175 Difference]: Start difference. First operand has 101 places, 88 transitions, 321 flow. Second operand 6 states and 435 transitions. [2025-03-17 19:41:19,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 213 transitions, 1187 flow [2025-03-17 19:41:19,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 213 transitions, 1169 flow, removed 1 selfloop flow, removed 5 redundant places. [2025-03-17 19:41:19,844 INFO L231 Difference]: Finished difference. Result has 100 places, 0 transitions, 0 flow [2025-03-17 19:41:19,844 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=98, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=100, PETRI_TRANSITIONS=0} [2025-03-17 19:41:19,844 INFO L279 CegarLoopForPetriNet]: 88 programPoint places, 12 predicate places. [2025-03-17 19:41:19,844 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 0 transitions, 0 flow [2025-03-17 19:41:19,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 51.4) internal successors, (257), 5 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-17 19:41:19,846 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 39 remaining) [2025-03-17 19:41:19,847 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 39 remaining) [2025-03-17 19:41:19,848 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 39 remaining) [2025-03-17 19:41:19,848 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 39 remaining) [2025-03-17 19:41:19,848 INFO L782 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 39 remaining) [2025-03-17 19:41:19,848 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2025-03-17 19:41:19,848 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-17 19:41:19,851 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2025-03-17 19:41:19,851 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-17 19:41:19,855 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.03 07:41:19 BasicIcfg [2025-03-17 19:41:19,855 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-17 19:41:19,855 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-17 19:41:19,856 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-17 19:41:19,856 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-17 19:41:19,856 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 17.03 07:40:48" (3/4) ... [2025-03-17 19:41:19,858 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-17 19:41:19,860 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread1 [2025-03-17 19:41:19,860 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread2 [2025-03-17 19:41:19,860 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure thread3 [2025-03-17 19:41:19,863 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 56 nodes and edges [2025-03-17 19:41:19,864 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2025-03-17 19:41:19,864 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2025-03-17 19:41:19,865 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-17 19:41:19,923 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-17 19:41:19,923 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-17 19:41:19,923 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-17 19:41:19,924 INFO L158 Benchmark]: Toolchain (without parser) took 32101.18ms. Allocated memory was 167.8MB in the beginning and 3.1GB in the end (delta: 2.9GB). Free memory was 124.2MB in the beginning and 2.4GB in the end (delta: -2.2GB). Peak memory consumption was 633.1MB. Max. memory is 16.1GB. [2025-03-17 19:41:19,924 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:41:19,924 INFO L158 Benchmark]: CACSL2BoogieTranslator took 185.04ms. Allocated memory is still 167.8MB. Free memory was 124.2MB in the beginning and 112.4MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:41:19,925 INFO L158 Benchmark]: Boogie Procedure Inliner took 22.67ms. Allocated memory is still 167.8MB. Free memory was 112.4MB in the beginning and 110.0MB in the end (delta: 2.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-17 19:41:19,926 INFO L158 Benchmark]: Boogie Preprocessor took 30.79ms. Allocated memory is still 167.8MB. Free memory was 110.0MB in the beginning and 109.0MB in the end (delta: 976.2kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:41:19,926 INFO L158 Benchmark]: IcfgBuilder took 553.00ms. Allocated memory is still 167.8MB. Free memory was 109.0MB in the beginning and 60.6MB in the end (delta: 48.4MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. [2025-03-17 19:41:19,926 INFO L158 Benchmark]: TraceAbstraction took 31237.13ms. Allocated memory was 167.8MB in the beginning and 3.1GB in the end (delta: 2.9GB). Free memory was 59.7MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 2.2GB. Max. memory is 16.1GB. [2025-03-17 19:41:19,926 INFO L158 Benchmark]: Witness Printer took 67.53ms. Allocated memory is still 3.1GB. Free memory was 2.4GB in the beginning and 2.4GB in the end (delta: 8.4MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-17 19:41:19,927 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 201.3MB. Free memory is still 117.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 185.04ms. Allocated memory is still 167.8MB. Free memory was 124.2MB in the beginning and 112.4MB in the end (delta: 11.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 22.67ms. Allocated memory is still 167.8MB. Free memory was 112.4MB in the beginning and 110.0MB in the end (delta: 2.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.79ms. Allocated memory is still 167.8MB. Free memory was 110.0MB in the beginning and 109.0MB in the end (delta: 976.2kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 553.00ms. Allocated memory is still 167.8MB. Free memory was 109.0MB in the beginning and 60.6MB in the end (delta: 48.4MB). Peak memory consumption was 41.9MB. Max. memory is 16.1GB. * TraceAbstraction took 31237.13ms. Allocated memory was 167.8MB in the beginning and 3.1GB in the end (delta: 2.9GB). Free memory was 59.7MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 2.2GB. Max. memory is 16.1GB. * Witness Printer took 67.53ms. Allocated memory is still 3.1GB. Free memory was 2.4GB in the beginning and 2.4GB in the end (delta: 8.4MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 87]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 88]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 89]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 159 locations, 188 edges, 39 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 31.1s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 29.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2282 SdHoareTripleChecker+Valid, 2.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1936 mSDsluCounter, 237 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 140 mSDsCounter, 106 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4451 IncrementalHoareTripleChecker+Invalid, 4557 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 106 mSolverCounterUnsat, 97 mSDtfsCounter, 4451 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 87 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=321occurred in iteration=20, InterpolantAutomatonStates: 97, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 243 ConstructedInterpolants, 0 QuantifiedInterpolants, 788 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 18 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2025-03-17 19:41:19,942 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE