./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 408d8d7e58240f749ab11087191b04ec647cfea8447827b0505b793eb68a9c0a --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-12 00:01:43,608 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-12 00:01:43,653 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-12 00:01:43,657 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-12 00:01:43,657 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-12 00:01:43,674 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-12 00:01:43,674 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-12 00:01:43,675 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-12 00:01:43,675 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-12 00:01:43,675 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-12 00:01:43,676 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-12 00:01:43,676 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-12 00:01:43,677 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-12 00:01:43,677 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-12 00:01:43,677 INFO L153 SettingsManager]: * Use SBE=true [2024-10-12 00:01:43,678 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-12 00:01:43,678 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-12 00:01:43,678 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-12 00:01:43,678 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-12 00:01:43,679 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-12 00:01:43,679 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-12 00:01:43,679 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-12 00:01:43,680 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-12 00:01:43,680 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-12 00:01:43,680 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-12 00:01:43,680 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-12 00:01:43,681 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-12 00:01:43,681 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-12 00:01:43,681 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-12 00:01:43,681 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-12 00:01:43,682 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-12 00:01:43,682 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-12 00:01:43,682 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-12 00:01:43,683 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-12 00:01:43,683 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:01:43,683 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-12 00:01:43,683 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-12 00:01:43,684 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-12 00:01:43,684 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-12 00:01:43,684 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-12 00:01:43,684 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-12 00:01:43,685 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-12 00:01:43,685 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-12 00:01:43,685 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-12 00:01:43,685 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 408d8d7e58240f749ab11087191b04ec647cfea8447827b0505b793eb68a9c0a [2024-10-12 00:01:43,976 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-12 00:01:44,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-12 00:01:44,012 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-12 00:01:44,015 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-12 00:01:44,015 INFO L274 PluginConnector]: CDTParser initialized [2024-10-12 00:01:44,017 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2024-10-12 00:01:45,502 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-12 00:01:45,680 INFO L384 CDTParser]: Found 1 translation units. [2024-10-12 00:01:45,681 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2024-10-12 00:01:45,687 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/08ca01ba0/8264d553dc1f4c46a3dc0056188316ce/FLAG7e46fd255 [2024-10-12 00:01:45,698 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/08ca01ba0/8264d553dc1f4c46a3dc0056188316ce [2024-10-12 00:01:45,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-12 00:01:45,701 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-12 00:01:45,702 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-12 00:01:45,702 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-12 00:01:45,706 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-12 00:01:45,707 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:01:45" (1/1) ... [2024-10-12 00:01:45,707 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@141a0cae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:45, skipping insertion in model container [2024-10-12 00:01:45,708 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 12:01:45" (1/1) ... [2024-10-12 00:01:45,725 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-12 00:01:45,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:01:45,921 INFO L200 MainTranslator]: Completed pre-run [2024-10-12 00:01:45,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-12 00:01:45,956 INFO L204 MainTranslator]: Completed translation [2024-10-12 00:01:45,956 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:45 WrapperNode [2024-10-12 00:01:45,957 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-12 00:01:45,957 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-12 00:01:45,958 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-12 00:01:45,958 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-12 00:01:45,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:45" (1/1) ... [2024-10-12 00:01:45,971 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:45" (1/1) ... [2024-10-12 00:01:45,992 INFO L138 Inliner]: procedures = 22, calls = 16, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 236 [2024-10-12 00:01:45,992 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-12 00:01:45,993 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-12 00:01:45,993 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-12 00:01:45,993 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-12 00:01:46,002 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:45" (1/1) ... [2024-10-12 00:01:46,003 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:45" (1/1) ... [2024-10-12 00:01:46,005 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:45" (1/1) ... [2024-10-12 00:01:46,018 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]. [2024-10-12 00:01:46,022 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:45" (1/1) ... [2024-10-12 00:01:46,023 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:45" (1/1) ... [2024-10-12 00:01:46,032 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:45" (1/1) ... [2024-10-12 00:01:46,034 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:45" (1/1) ... [2024-10-12 00:01:46,036 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:45" (1/1) ... [2024-10-12 00:01:46,037 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:45" (1/1) ... [2024-10-12 00:01:46,039 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-12 00:01:46,040 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-12 00:01:46,040 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-12 00:01:46,040 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-12 00:01:46,041 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:45" (1/1) ... [2024-10-12 00:01:46,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-12 00:01:46,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-12 00:01:46,071 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-12 00:01:46,073 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-12 00:01:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-12 00:01:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-12 00:01:46,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-12 00:01:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-12 00:01:46,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-12 00:01:46,120 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-12 00:01:46,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-12 00:01:46,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-12 00:01:46,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-12 00:01:46,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-12 00:01:46,123 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-12 00:01:46,245 INFO L238 CfgBuilder]: Building ICFG [2024-10-12 00:01:46,247 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-12 00:01:46,541 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-12 00:01:46,541 INFO L287 CfgBuilder]: Performing block encoding [2024-10-12 00:01:46,819 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-12 00:01:46,820 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-12 00:01:46,820 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:01:46 BoogieIcfgContainer [2024-10-12 00:01:46,820 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-12 00:01:46,822 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-12 00:01:46,823 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-12 00:01:46,826 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-12 00:01:46,826 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 12:01:45" (1/3) ... [2024-10-12 00:01:46,826 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f171e05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:01:46, skipping insertion in model container [2024-10-12 00:01:46,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 12:01:45" (2/3) ... [2024-10-12 00:01:46,827 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f171e05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 12:01:46, skipping insertion in model container [2024-10-12 00:01:46,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 12:01:46" (3/3) ... [2024-10-12 00:01:46,829 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-trans.wvr.c [2024-10-12 00:01:46,843 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-12 00:01:46,843 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2024-10-12 00:01:46,845 INFO L484 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-12 00:01:46,997 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-12 00:01:47,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 107 transitions, 235 flow [2024-10-12 00:01:47,113 INFO L124 PetriNetUnfolderBase]: 18/104 cut-off events. [2024-10-12 00:01:47,116 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-12 00:01:47,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 104 events. 18/104 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 387 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 102. Up to 2 conditions per place. [2024-10-12 00:01:47,125 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 107 transitions, 235 flow [2024-10-12 00:01:47,130 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 102 transitions, 219 flow [2024-10-12 00:01:47,143 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-12 00:01:47,152 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;@7c777e4a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-12 00:01:47,152 INFO L334 AbstractCegarLoop]: Starting to check reachability of 39 error locations. [2024-10-12 00:01:47,167 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-12 00:01:47,168 INFO L124 PetriNetUnfolderBase]: 7/43 cut-off events. [2024-10-12 00:01:47,168 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-10-12 00:01:47,168 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:01:47,169 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:01:47,169 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:01:47,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:01:47,174 INFO L85 PathProgramCache]: Analyzing trace with hash -442347577, now seen corresponding path program 1 times [2024-10-12 00:01:47,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:01:47,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877064648] [2024-10-12 00:01:47,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:01:47,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:01:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:01:47,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:01:47,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:01:47,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877064648] [2024-10-12 00:01:47,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877064648] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:01:47,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:01:47,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:01:47,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593307651] [2024-10-12 00:01:47,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:01:47,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:01:47,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:01:47,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:01:47,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:01:47,579 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 107 [2024-10-12 00:01:47,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 102 transitions, 219 flow. Second operand has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:47,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:01:47,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 107 [2024-10-12 00:01:47,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:01:50,590 INFO L124 PetriNetUnfolderBase]: 14059/22486 cut-off events. [2024-10-12 00:01:50,591 INFO L125 PetriNetUnfolderBase]: For 330/330 co-relation queries the response was YES. [2024-10-12 00:01:50,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41488 conditions, 22486 events. 14059/22486 cut-off events. For 330/330 co-relation queries the response was YES. Maximal size of possible extension queue 1406. Compared 186337 event pairs, 5420 based on Foata normal form. 532/18838 useless extension candidates. Maximal degree in co-relation 40483. Up to 10138 conditions per place. [2024-10-12 00:01:50,842 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 100 selfloop transitions, 5 changer transitions 0/159 dead transitions. [2024-10-12 00:01:50,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 159 transitions, 555 flow [2024-10-12 00:01:50,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:01:50,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:01:50,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 336 transitions. [2024-10-12 00:01:50,862 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7850467289719626 [2024-10-12 00:01:50,865 INFO L175 Difference]: Start difference. First operand has 94 places, 102 transitions, 219 flow. Second operand 4 states and 336 transitions. [2024-10-12 00:01:50,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 159 transitions, 555 flow [2024-10-12 00:01:50,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 159 transitions, 540 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-10-12 00:01:50,924 INFO L231 Difference]: Finished difference. Result has 94 places, 104 transitions, 244 flow [2024-10-12 00:01:50,926 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=94, PETRI_TRANSITIONS=104} [2024-10-12 00:01:50,931 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 0 predicate places. [2024-10-12 00:01:50,932 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 104 transitions, 244 flow [2024-10-12 00:01:50,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:50,933 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:01:50,933 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:01:50,933 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-12 00:01:50,933 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:01:50,934 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:01:50,934 INFO L85 PathProgramCache]: Analyzing trace with hash -827872212, now seen corresponding path program 1 times [2024-10-12 00:01:50,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:01:50,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777930079] [2024-10-12 00:01:50,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:01:50,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:01:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:01:51,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:01:51,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:01:51,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777930079] [2024-10-12 00:01:51,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777930079] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:01:51,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:01:51,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:01:51,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544870036] [2024-10-12 00:01:51,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:01:51,046 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:01:51,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:01:51,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:01:51,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:01:51,090 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 107 [2024-10-12 00:01:51,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 104 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:51,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:01:51,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 107 [2024-10-12 00:01:51,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:01:53,189 INFO L124 PetriNetUnfolderBase]: 10585/19081 cut-off events. [2024-10-12 00:01:53,190 INFO L125 PetriNetUnfolderBase]: For 3423/3445 co-relation queries the response was YES. [2024-10-12 00:01:53,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36848 conditions, 19081 events. 10585/19081 cut-off events. For 3423/3445 co-relation queries the response was YES. Maximal size of possible extension queue 1217. Compared 175600 event pairs, 3367 based on Foata normal form. 22/16420 useless extension candidates. Maximal degree in co-relation 21643. Up to 7399 conditions per place. [2024-10-12 00:01:53,293 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 68 selfloop transitions, 4 changer transitions 0/130 dead transitions. [2024-10-12 00:01:53,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 130 transitions, 443 flow [2024-10-12 00:01:53,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:01:53,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:01:53,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 311 transitions. [2024-10-12 00:01:53,296 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7266355140186916 [2024-10-12 00:01:53,296 INFO L175 Difference]: Start difference. First operand has 94 places, 104 transitions, 244 flow. Second operand 4 states and 311 transitions. [2024-10-12 00:01:53,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 130 transitions, 443 flow [2024-10-12 00:01:53,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 130 transitions, 443 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-12 00:01:53,353 INFO L231 Difference]: Finished difference. Result has 96 places, 103 transitions, 250 flow [2024-10-12 00:01:53,353 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=250, PETRI_PLACES=96, PETRI_TRANSITIONS=103} [2024-10-12 00:01:53,354 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 2 predicate places. [2024-10-12 00:01:53,354 INFO L471 AbstractCegarLoop]: Abstraction has has 96 places, 103 transitions, 250 flow [2024-10-12 00:01:53,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.0) internal successors, (244), 4 states have internal predecessors, (244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:53,354 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:01:53,355 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:01:53,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-12 00:01:53,355 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:01:53,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:01:53,355 INFO L85 PathProgramCache]: Analyzing trace with hash 829868616, now seen corresponding path program 1 times [2024-10-12 00:01:53,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:01:53,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196111076] [2024-10-12 00:01:53,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:01:53,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:01:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:01:53,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:01:53,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:01:53,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196111076] [2024-10-12 00:01:53,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196111076] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:01:53,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:01:53,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:01:53,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762601463] [2024-10-12 00:01:53,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:01:53,431 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:01:53,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:01:53,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:01:53,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:01:53,451 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 107 [2024-10-12 00:01:53,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 103 transitions, 250 flow. Second operand has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 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) [2024-10-12 00:01:53,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:01:53,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 107 [2024-10-12 00:01:53,453 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:01:55,083 INFO L124 PetriNetUnfolderBase]: 10457/18631 cut-off events. [2024-10-12 00:01:55,084 INFO L125 PetriNetUnfolderBase]: For 5307/5822 co-relation queries the response was YES. [2024-10-12 00:01:55,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35999 conditions, 18631 events. 10457/18631 cut-off events. For 5307/5822 co-relation queries the response was YES. Maximal size of possible extension queue 1205. Compared 169445 event pairs, 3897 based on Foata normal form. 904/15982 useless extension candidates. Maximal degree in co-relation 22400. Up to 6904 conditions per place. [2024-10-12 00:01:55,334 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 71 selfloop transitions, 3 changer transitions 0/129 dead transitions. [2024-10-12 00:01:55,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 129 transitions, 477 flow [2024-10-12 00:01:55,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:01:55,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:01:55,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 308 transitions. [2024-10-12 00:01:55,341 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.719626168224299 [2024-10-12 00:01:55,341 INFO L175 Difference]: Start difference. First operand has 96 places, 103 transitions, 250 flow. Second operand 4 states and 308 transitions. [2024-10-12 00:01:55,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 129 transitions, 477 flow [2024-10-12 00:01:55,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 129 transitions, 463 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:01:55,389 INFO L231 Difference]: Finished difference. Result has 94 places, 101 transitions, 244 flow [2024-10-12 00:01:55,390 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=244, PETRI_PLACES=94, PETRI_TRANSITIONS=101} [2024-10-12 00:01:55,390 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 0 predicate places. [2024-10-12 00:01:55,391 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 101 transitions, 244 flow [2024-10-12 00:01:55,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.5) internal successors, (242), 4 states have internal predecessors, (242), 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) [2024-10-12 00:01:55,391 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:01:55,393 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:01:55,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-12 00:01:55,393 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:01:55,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:01:55,394 INFO L85 PathProgramCache]: Analyzing trace with hash 105734219, now seen corresponding path program 1 times [2024-10-12 00:01:55,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:01:55,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619024094] [2024-10-12 00:01:55,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:01:55,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:01:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:01:55,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:01:55,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:01:55,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619024094] [2024-10-12 00:01:55,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619024094] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:01:55,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:01:55,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:01:55,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814918987] [2024-10-12 00:01:55,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:01:55,481 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:01:55,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:01:55,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:01:55,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:01:55,502 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 107 [2024-10-12 00:01:55,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 101 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:55,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:01:55,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 107 [2024-10-12 00:01:55,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:01:56,558 INFO L124 PetriNetUnfolderBase]: 10607/18849 cut-off events. [2024-10-12 00:01:56,558 INFO L125 PetriNetUnfolderBase]: For 4869/4891 co-relation queries the response was YES. [2024-10-12 00:01:56,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37310 conditions, 18849 events. 10607/18849 cut-off events. For 4869/4891 co-relation queries the response was YES. Maximal size of possible extension queue 1200. Compared 170676 event pairs, 3367 based on Foata normal form. 288/16759 useless extension candidates. Maximal degree in co-relation 22064. Up to 7665 conditions per place. [2024-10-12 00:01:56,715 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 69 selfloop transitions, 4 changer transitions 0/127 dead transitions. [2024-10-12 00:01:56,715 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 127 transitions, 447 flow [2024-10-12 00:01:56,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:01:56,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:01:56,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 307 transitions. [2024-10-12 00:01:56,716 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7172897196261683 [2024-10-12 00:01:56,716 INFO L175 Difference]: Start difference. First operand has 94 places, 101 transitions, 244 flow. Second operand 4 states and 307 transitions. [2024-10-12 00:01:56,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 127 transitions, 447 flow [2024-10-12 00:01:56,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 127 transitions, 437 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:01:56,778 INFO L231 Difference]: Finished difference. Result has 93 places, 100 transitions, 242 flow [2024-10-12 00:01:56,781 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=242, PETRI_PLACES=93, PETRI_TRANSITIONS=100} [2024-10-12 00:01:56,781 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -1 predicate places. [2024-10-12 00:01:56,782 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 100 transitions, 242 flow [2024-10-12 00:01:56,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 60.25) internal successors, (241), 4 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:56,782 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:01:56,782 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:01:56,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-12 00:01:56,782 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:01:56,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:01:56,783 INFO L85 PathProgramCache]: Analyzing trace with hash -43875862, now seen corresponding path program 1 times [2024-10-12 00:01:56,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:01:56,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009786886] [2024-10-12 00:01:56,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:01:56,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:01:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:01:56,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:01:56,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:01:56,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009786886] [2024-10-12 00:01:56,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009786886] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:01:56,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:01:56,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:01:56,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796344102] [2024-10-12 00:01:56,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:01:56,864 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:01:56,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:01:56,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:01:56,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:01:56,878 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 107 [2024-10-12 00:01:56,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 100 transitions, 242 flow. Second operand has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:56,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:01:56,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 107 [2024-10-12 00:01:56,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:01:57,642 INFO L124 PetriNetUnfolderBase]: 8675/16503 cut-off events. [2024-10-12 00:01:57,643 INFO L125 PetriNetUnfolderBase]: For 4325/4535 co-relation queries the response was YES. [2024-10-12 00:01:57,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30814 conditions, 16503 events. 8675/16503 cut-off events. For 4325/4535 co-relation queries the response was YES. Maximal size of possible extension queue 1063. Compared 156432 event pairs, 3853 based on Foata normal form. 210/13860 useless extension candidates. Maximal degree in co-relation 19157. Up to 6904 conditions per place. [2024-10-12 00:01:57,764 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 69 selfloop transitions, 3 changer transitions 0/127 dead transitions. [2024-10-12 00:01:57,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 127 transitions, 467 flow [2024-10-12 00:01:57,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:01:57,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:01:57,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 309 transitions. [2024-10-12 00:01:57,768 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7219626168224299 [2024-10-12 00:01:57,768 INFO L175 Difference]: Start difference. First operand has 93 places, 100 transitions, 242 flow. Second operand 4 states and 309 transitions. [2024-10-12 00:01:57,768 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 127 transitions, 467 flow [2024-10-12 00:01:57,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 127 transitions, 453 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:01:57,794 INFO L231 Difference]: Finished difference. Result has 92 places, 99 transitions, 238 flow [2024-10-12 00:01:57,794 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=92, PETRI_TRANSITIONS=99} [2024-10-12 00:01:57,796 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -2 predicate places. [2024-10-12 00:01:57,796 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 99 transitions, 238 flow [2024-10-12 00:01:57,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.5) internal successors, (246), 4 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:57,797 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:01:57,797 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:01:57,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-12 00:01:57,797 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:01:57,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:01:57,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1017206738, now seen corresponding path program 1 times [2024-10-12 00:01:57,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:01:57,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327760749] [2024-10-12 00:01:57,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:01:57,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:01:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:01:57,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:01:57,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:01:57,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327760749] [2024-10-12 00:01:57,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327760749] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:01:57,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:01:57,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:01:57,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990863002] [2024-10-12 00:01:57,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:01:57,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:01:57,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:01:57,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:01:57,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:01:57,887 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 107 [2024-10-12 00:01:57,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 99 transitions, 238 flow. Second operand has 5 states, 5 states have (on average 59.4) internal successors, (297), 5 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:57,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:01:57,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 107 [2024-10-12 00:01:57,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:01:58,915 INFO L124 PetriNetUnfolderBase]: 14252/22265 cut-off events. [2024-10-12 00:01:58,915 INFO L125 PetriNetUnfolderBase]: For 2755/2755 co-relation queries the response was YES. [2024-10-12 00:01:58,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45808 conditions, 22265 events. 14252/22265 cut-off events. For 2755/2755 co-relation queries the response was YES. Maximal size of possible extension queue 1392. Compared 180620 event pairs, 3279 based on Foata normal form. 0/20221 useless extension candidates. Maximal degree in co-relation 27416. Up to 9347 conditions per place. [2024-10-12 00:01:59,047 INFO L140 encePairwiseOnDemand]: 101/107 looper letters, 96 selfloop transitions, 6 changer transitions 0/152 dead transitions. [2024-10-12 00:01:59,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 152 transitions, 562 flow [2024-10-12 00:01:59,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:01:59,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:01:59,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 392 transitions. [2024-10-12 00:01:59,049 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7327102803738318 [2024-10-12 00:01:59,049 INFO L175 Difference]: Start difference. First operand has 92 places, 99 transitions, 238 flow. Second operand 5 states and 392 transitions. [2024-10-12 00:01:59,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 152 transitions, 562 flow [2024-10-12 00:01:59,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 152 transitions, 548 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:01:59,107 INFO L231 Difference]: Finished difference. Result has 92 places, 98 transitions, 242 flow [2024-10-12 00:01:59,108 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=242, PETRI_PLACES=92, PETRI_TRANSITIONS=98} [2024-10-12 00:01:59,108 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -2 predicate places. [2024-10-12 00:01:59,108 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 98 transitions, 242 flow [2024-10-12 00:01:59,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.4) internal successors, (297), 5 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:59,109 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:01:59,109 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:01:59,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-12 00:01:59,109 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:01:59,109 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:01:59,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1017205713, now seen corresponding path program 1 times [2024-10-12 00:01:59,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:01:59,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320354512] [2024-10-12 00:01:59,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:01:59,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:01:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:01:59,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:01:59,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:01:59,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320354512] [2024-10-12 00:01:59,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320354512] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:01:59,148 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:01:59,148 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:01:59,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556841913] [2024-10-12 00:01:59,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:01:59,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:01:59,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:01:59,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:01:59,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:01:59,161 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 107 [2024-10-12 00:01:59,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 98 transitions, 242 flow. Second operand has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:01:59,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:01:59,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 107 [2024-10-12 00:01:59,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:00,451 INFO L124 PetriNetUnfolderBase]: 11720/19787 cut-off events. [2024-10-12 00:02:00,452 INFO L125 PetriNetUnfolderBase]: For 6303/6303 co-relation queries the response was YES. [2024-10-12 00:02:00,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40012 conditions, 19787 events. 11720/19787 cut-off events. For 6303/6303 co-relation queries the response was YES. Maximal size of possible extension queue 1239. Compared 172073 event pairs, 5591 based on Foata normal form. 266/17417 useless extension candidates. Maximal degree in co-relation 23802. Up to 10172 conditions per place. [2024-10-12 00:02:00,582 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 98 selfloop transitions, 4 changer transitions 0/152 dead transitions. [2024-10-12 00:02:00,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 152 transitions, 556 flow [2024-10-12 00:02:00,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:02:00,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:02:00,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 331 transitions. [2024-10-12 00:02:00,584 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7733644859813084 [2024-10-12 00:02:00,584 INFO L175 Difference]: Start difference. First operand has 92 places, 98 transitions, 242 flow. Second operand 4 states and 331 transitions. [2024-10-12 00:02:00,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 152 transitions, 556 flow [2024-10-12 00:02:00,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 152 transitions, 544 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-12 00:02:00,640 INFO L231 Difference]: Finished difference. Result has 91 places, 97 transitions, 232 flow [2024-10-12 00:02:00,641 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=232, PETRI_PLACES=91, PETRI_TRANSITIONS=97} [2024-10-12 00:02:00,641 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, -3 predicate places. [2024-10-12 00:02:00,642 INFO L471 AbstractCegarLoop]: Abstraction has has 91 places, 97 transitions, 232 flow [2024-10-12 00:02:00,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.5) internal successors, (234), 4 states have internal predecessors, (234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:00,642 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:00,642 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:00,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-12 00:02:00,642 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:02:00,643 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:00,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1846275519, now seen corresponding path program 1 times [2024-10-12 00:02:00,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:00,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627385244] [2024-10-12 00:02:00,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:00,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:00,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:02:00,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:00,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627385244] [2024-10-12 00:02:00,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627385244] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:00,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:02:00,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:02:00,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033359412] [2024-10-12 00:02:00,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:00,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:02:00,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:00,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:02:00,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:02:00,772 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 107 [2024-10-12 00:02:00,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 97 transitions, 232 flow. Second operand has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:00,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:00,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 107 [2024-10-12 00:02:00,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:02,620 INFO L124 PetriNetUnfolderBase]: 16574/26850 cut-off events. [2024-10-12 00:02:02,621 INFO L125 PetriNetUnfolderBase]: For 7087/7493 co-relation queries the response was YES. [2024-10-12 00:02:02,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53647 conditions, 26850 events. 16574/26850 cut-off events. For 7087/7493 co-relation queries the response was YES. Maximal size of possible extension queue 1576. Compared 231695 event pairs, 6768 based on Foata normal form. 1002/23709 useless extension candidates. Maximal degree in co-relation 33520. Up to 12388 conditions per place. [2024-10-12 00:02:02,748 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 102 selfloop transitions, 5 changer transitions 0/154 dead transitions. [2024-10-12 00:02:02,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 154 transitions, 610 flow [2024-10-12 00:02:02,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:02:02,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:02:02,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2024-10-12 00:02:02,750 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7757009345794392 [2024-10-12 00:02:02,750 INFO L175 Difference]: Start difference. First operand has 91 places, 97 transitions, 232 flow. Second operand 4 states and 332 transitions. [2024-10-12 00:02:02,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 154 transitions, 610 flow [2024-10-12 00:02:02,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 154 transitions, 594 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-12 00:02:02,777 INFO L231 Difference]: Finished difference. Result has 94 places, 99 transitions, 260 flow [2024-10-12 00:02:02,777 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=224, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=260, PETRI_PLACES=94, PETRI_TRANSITIONS=99} [2024-10-12 00:02:02,778 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 0 predicate places. [2024-10-12 00:02:02,778 INFO L471 AbstractCegarLoop]: Abstraction has has 94 places, 99 transitions, 260 flow [2024-10-12 00:02:02,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.25) internal successors, (237), 4 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:02,779 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:02,779 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:02,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-12 00:02:02,779 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:02:02,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:02,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1468637010, now seen corresponding path program 1 times [2024-10-12 00:02:02,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:02,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728267045] [2024-10-12 00:02:02,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:02,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:02,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:02,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:02:02,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:02,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728267045] [2024-10-12 00:02:02,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728267045] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:02,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:02:02,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:02:02,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306425861] [2024-10-12 00:02:02,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:02,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:02:02,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:02,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:02:02,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:02:02,938 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 107 [2024-10-12 00:02:02,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 99 transitions, 260 flow. Second operand has 6 states, 6 states have (on average 56.166666666666664) internal successors, (337), 6 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:02,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:02,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 107 [2024-10-12 00:02:02,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:04,818 INFO L124 PetriNetUnfolderBase]: 16506/26289 cut-off events. [2024-10-12 00:02:04,818 INFO L125 PetriNetUnfolderBase]: For 8983/9543 co-relation queries the response was YES. [2024-10-12 00:02:04,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56390 conditions, 26289 events. 16506/26289 cut-off events. For 8983/9543 co-relation queries the response was YES. Maximal size of possible extension queue 1603. Compared 223290 event pairs, 4053 based on Foata normal form. 914/24794 useless extension candidates. Maximal degree in co-relation 36765. Up to 7565 conditions per place. [2024-10-12 00:02:04,972 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 128 selfloop transitions, 9 changer transitions 0/186 dead transitions. [2024-10-12 00:02:04,972 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 186 transitions, 771 flow [2024-10-12 00:02:04,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:02:04,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:02:04,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 458 transitions. [2024-10-12 00:02:04,974 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7133956386292835 [2024-10-12 00:02:04,974 INFO L175 Difference]: Start difference. First operand has 94 places, 99 transitions, 260 flow. Second operand 6 states and 458 transitions. [2024-10-12 00:02:04,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 186 transitions, 771 flow [2024-10-12 00:02:05,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 186 transitions, 771 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-10-12 00:02:05,054 INFO L231 Difference]: Finished difference. Result has 99 places, 99 transitions, 285 flow [2024-10-12 00:02:05,054 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=285, PETRI_PLACES=99, PETRI_TRANSITIONS=99} [2024-10-12 00:02:05,056 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 5 predicate places. [2024-10-12 00:02:05,056 INFO L471 AbstractCegarLoop]: Abstraction has has 99 places, 99 transitions, 285 flow [2024-10-12 00:02:05,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.166666666666664) internal successors, (337), 6 states have internal predecessors, (337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:05,056 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:05,056 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:05,056 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-12 00:02:05,056 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:02:05,057 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:05,057 INFO L85 PathProgramCache]: Analyzing trace with hash 784010829, now seen corresponding path program 1 times [2024-10-12 00:02:05,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:05,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522745926] [2024-10-12 00:02:05,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:05,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:05,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:05,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:02:05,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:05,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522745926] [2024-10-12 00:02:05,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522745926] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:05,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:02:05,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:02:05,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274533780] [2024-10-12 00:02:05,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:05,128 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:02:05,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:05,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:02:05,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:02:05,155 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 107 [2024-10-12 00:02:05,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 99 transitions, 285 flow. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:05,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:05,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 107 [2024-10-12 00:02:05,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:07,496 INFO L124 PetriNetUnfolderBase]: 16748/30640 cut-off events. [2024-10-12 00:02:07,497 INFO L125 PetriNetUnfolderBase]: For 21678/23450 co-relation queries the response was YES. [2024-10-12 00:02:07,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65304 conditions, 30640 events. 16748/30640 cut-off events. For 21678/23450 co-relation queries the response was YES. Maximal size of possible extension queue 1732. Compared 301715 event pairs, 8142 based on Foata normal form. 1343/27479 useless extension candidates. Maximal degree in co-relation 42967. Up to 14288 conditions per place. [2024-10-12 00:02:07,727 INFO L140 encePairwiseOnDemand]: 101/107 looper letters, 111 selfloop transitions, 5 changer transitions 0/165 dead transitions. [2024-10-12 00:02:07,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 165 transitions, 761 flow [2024-10-12 00:02:07,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:02:07,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:02:07,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 330 transitions. [2024-10-12 00:02:07,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7710280373831776 [2024-10-12 00:02:07,729 INFO L175 Difference]: Start difference. First operand has 99 places, 99 transitions, 285 flow. Second operand 4 states and 330 transitions. [2024-10-12 00:02:07,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 165 transitions, 761 flow [2024-10-12 00:02:07,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 165 transitions, 730 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-12 00:02:07,875 INFO L231 Difference]: Finished difference. Result has 100 places, 101 transitions, 299 flow [2024-10-12 00:02:07,880 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=299, PETRI_PLACES=100, PETRI_TRANSITIONS=101} [2024-10-12 00:02:07,881 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 6 predicate places. [2024-10-12 00:02:07,881 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 101 transitions, 299 flow [2024-10-12 00:02:07,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 4 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:07,882 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:07,882 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:07,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-12 00:02:07,882 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:02:07,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:07,883 INFO L85 PathProgramCache]: Analyzing trace with hash 784009804, now seen corresponding path program 1 times [2024-10-12 00:02:07,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:07,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956646304] [2024-10-12 00:02:07,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:07,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:08,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:02:08,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:08,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956646304] [2024-10-12 00:02:08,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956646304] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:08,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:02:08,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:02:08,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412146912] [2024-10-12 00:02:08,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:08,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:02:08,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:08,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:02:08,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:02:08,095 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 107 [2024-10-12 00:02:08,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 101 transitions, 299 flow. Second operand has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:08,099 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:08,099 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 107 [2024-10-12 00:02:08,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:10,922 INFO L124 PetriNetUnfolderBase]: 19838/32347 cut-off events. [2024-10-12 00:02:10,923 INFO L125 PetriNetUnfolderBase]: For 20977/23393 co-relation queries the response was YES. [2024-10-12 00:02:11,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75091 conditions, 32347 events. 19838/32347 cut-off events. For 20977/23393 co-relation queries the response was YES. Maximal size of possible extension queue 1879. Compared 286742 event pairs, 4725 based on Foata normal form. 1724/31881 useless extension candidates. Maximal degree in co-relation 50276. Up to 13444 conditions per place. [2024-10-12 00:02:11,184 INFO L140 encePairwiseOnDemand]: 101/107 looper letters, 110 selfloop transitions, 6 changer transitions 0/163 dead transitions. [2024-10-12 00:02:11,184 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 163 transitions, 749 flow [2024-10-12 00:02:11,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:02:11,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:02:11,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2024-10-12 00:02:11,186 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7289719626168224 [2024-10-12 00:02:11,186 INFO L175 Difference]: Start difference. First operand has 100 places, 101 transitions, 299 flow. Second operand 5 states and 390 transitions. [2024-10-12 00:02:11,186 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 163 transitions, 749 flow [2024-10-12 00:02:11,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 163 transitions, 746 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:02:11,552 INFO L231 Difference]: Finished difference. Result has 103 places, 101 transitions, 313 flow [2024-10-12 00:02:11,552 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=313, PETRI_PLACES=103, PETRI_TRANSITIONS=101} [2024-10-12 00:02:11,553 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 9 predicate places. [2024-10-12 00:02:11,553 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 101 transitions, 313 flow [2024-10-12 00:02:11,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 59.8) internal successors, (299), 5 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:11,553 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:11,554 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:11,554 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-12 00:02:11,554 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:02:11,554 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:11,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1399967090, now seen corresponding path program 1 times [2024-10-12 00:02:11,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:11,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130524804] [2024-10-12 00:02:11,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:11,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:11,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:02:11,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:11,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130524804] [2024-10-12 00:02:11,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130524804] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:11,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:02:11,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:02:11,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861085285] [2024-10-12 00:02:11,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:11,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:02:11,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:11,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:02:11,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:02:11,625 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 107 [2024-10-12 00:02:11,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 101 transitions, 313 flow. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:11,627 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:11,627 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 107 [2024-10-12 00:02:11,628 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:13,580 INFO L124 PetriNetUnfolderBase]: 15298/28335 cut-off events. [2024-10-12 00:02:13,581 INFO L125 PetriNetUnfolderBase]: For 21353/23032 co-relation queries the response was YES. [2024-10-12 00:02:13,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64206 conditions, 28335 events. 15298/28335 cut-off events. For 21353/23032 co-relation queries the response was YES. Maximal size of possible extension queue 1542. Compared 279083 event pairs, 5190 based on Foata normal form. 1293/26842 useless extension candidates. Maximal degree in co-relation 44615. Up to 9851 conditions per place. [2024-10-12 00:02:13,879 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 78 selfloop transitions, 4 changer transitions 0/131 dead transitions. [2024-10-12 00:02:13,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 131 transitions, 593 flow [2024-10-12 00:02:13,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:02:13,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:02:13,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 309 transitions. [2024-10-12 00:02:13,881 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7219626168224299 [2024-10-12 00:02:13,881 INFO L175 Difference]: Start difference. First operand has 103 places, 101 transitions, 313 flow. Second operand 4 states and 309 transitions. [2024-10-12 00:02:13,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 131 transitions, 593 flow [2024-10-12 00:02:14,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 131 transitions, 578 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-10-12 00:02:14,039 INFO L231 Difference]: Finished difference. Result has 102 places, 100 transitions, 310 flow [2024-10-12 00:02:14,039 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=310, PETRI_PLACES=102, PETRI_TRANSITIONS=100} [2024-10-12 00:02:14,040 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 8 predicate places. [2024-10-12 00:02:14,040 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 100 transitions, 310 flow [2024-10-12 00:02:14,041 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 4 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:14,041 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:14,041 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:14,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-12 00:02:14,042 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:02:14,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:14,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1630756460, now seen corresponding path program 1 times [2024-10-12 00:02:14,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:14,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428766117] [2024-10-12 00:02:14,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:14,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:14,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:14,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:02:14,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:14,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428766117] [2024-10-12 00:02:14,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428766117] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:14,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:02:14,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:02:14,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45660876] [2024-10-12 00:02:14,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:14,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:02:14,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:14,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:02:14,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:02:14,134 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 107 [2024-10-12 00:02:14,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 100 transitions, 310 flow. Second operand has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:14,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:14,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 107 [2024-10-12 00:02:14,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:16,422 INFO L124 PetriNetUnfolderBase]: 19843/32597 cut-off events. [2024-10-12 00:02:16,423 INFO L125 PetriNetUnfolderBase]: For 26193/27633 co-relation queries the response was YES. [2024-10-12 00:02:16,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77377 conditions, 32597 events. 19843/32597 cut-off events. For 26193/27633 co-relation queries the response was YES. Maximal size of possible extension queue 1760. Compared 290948 event pairs, 8135 based on Foata normal form. 1493/31258 useless extension candidates. Maximal degree in co-relation 53723. Up to 14944 conditions per place. [2024-10-12 00:02:16,602 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 112 selfloop transitions, 5 changer transitions 0/164 dead transitions. [2024-10-12 00:02:16,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 164 transitions, 769 flow [2024-10-12 00:02:16,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:02:16,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:02:16,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 329 transitions. [2024-10-12 00:02:16,604 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7686915887850467 [2024-10-12 00:02:16,604 INFO L175 Difference]: Start difference. First operand has 102 places, 100 transitions, 310 flow. Second operand 4 states and 329 transitions. [2024-10-12 00:02:16,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 164 transitions, 769 flow [2024-10-12 00:02:16,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 164 transitions, 746 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-12 00:02:16,667 INFO L231 Difference]: Finished difference. Result has 101 places, 100 transitions, 312 flow [2024-10-12 00:02:16,667 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=293, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=312, PETRI_PLACES=101, PETRI_TRANSITIONS=100} [2024-10-12 00:02:16,667 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 7 predicate places. [2024-10-12 00:02:16,667 INFO L471 AbstractCegarLoop]: Abstraction has has 101 places, 100 transitions, 312 flow [2024-10-12 00:02:16,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 58.75) internal successors, (235), 4 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:16,668 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:16,668 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:16,668 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-12 00:02:16,668 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:02:16,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:16,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1465499025, now seen corresponding path program 1 times [2024-10-12 00:02:16,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:16,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819866065] [2024-10-12 00:02:16,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:16,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:16,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:16,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:02:16,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:16,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819866065] [2024-10-12 00:02:16,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819866065] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:16,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:02:16,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:02:16,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155840004] [2024-10-12 00:02:16,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:16,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:02:16,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:16,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:02:16,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:02:16,752 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 107 [2024-10-12 00:02:16,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 100 transitions, 312 flow. Second operand has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:16,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:16,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 107 [2024-10-12 00:02:16,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:19,079 INFO L124 PetriNetUnfolderBase]: 21238/34068 cut-off events. [2024-10-12 00:02:19,080 INFO L125 PetriNetUnfolderBase]: For 31506/33641 co-relation queries the response was YES. [2024-10-12 00:02:19,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83982 conditions, 34068 events. 21238/34068 cut-off events. For 31506/33641 co-relation queries the response was YES. Maximal size of possible extension queue 1910. Compared 297329 event pairs, 5085 based on Foata normal form. 2581/34291 useless extension candidates. Maximal degree in co-relation 68089. Up to 9331 conditions per place. [2024-10-12 00:02:19,515 INFO L140 encePairwiseOnDemand]: 99/107 looper letters, 142 selfloop transitions, 9 changer transitions 0/196 dead transitions. [2024-10-12 00:02:19,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 196 transitions, 980 flow [2024-10-12 00:02:19,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:02:19,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:02:19,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 455 transitions. [2024-10-12 00:02:19,517 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7087227414330218 [2024-10-12 00:02:19,517 INFO L175 Difference]: Start difference. First operand has 101 places, 100 transitions, 312 flow. Second operand 6 states and 455 transitions. [2024-10-12 00:02:19,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 196 transitions, 980 flow [2024-10-12 00:02:19,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 196 transitions, 964 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-12 00:02:19,663 INFO L231 Difference]: Finished difference. Result has 105 places, 100 transitions, 333 flow [2024-10-12 00:02:19,663 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=333, PETRI_PLACES=105, PETRI_TRANSITIONS=100} [2024-10-12 00:02:19,663 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 11 predicate places. [2024-10-12 00:02:19,663 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 100 transitions, 333 flow [2024-10-12 00:02:19,664 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 56.5) internal successors, (339), 6 states have internal predecessors, (339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:19,664 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:19,664 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:19,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-12 00:02:19,664 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:02:19,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:19,664 INFO L85 PathProgramCache]: Analyzing trace with hash 449275907, now seen corresponding path program 1 times [2024-10-12 00:02:19,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:19,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739233183] [2024-10-12 00:02:19,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:19,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:19,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:02:19,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:19,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739233183] [2024-10-12 00:02:19,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739233183] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:19,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:02:19,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-12 00:02:19,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406952198] [2024-10-12 00:02:19,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:19,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:02:19,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:19,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:02:19,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:02:19,720 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 107 [2024-10-12 00:02:19,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 100 transitions, 333 flow. Second operand has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:19,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:19,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 107 [2024-10-12 00:02:19,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:21,544 INFO L124 PetriNetUnfolderBase]: 16382/29668 cut-off events. [2024-10-12 00:02:21,544 INFO L125 PetriNetUnfolderBase]: For 31629/33957 co-relation queries the response was YES. [2024-10-12 00:02:21,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72299 conditions, 29668 events. 16382/29668 cut-off events. For 31629/33957 co-relation queries the response was YES. Maximal size of possible extension queue 1585. Compared 286934 event pairs, 5615 based on Foata normal form. 2300/29141 useless extension candidates. Maximal degree in co-relation 59352. Up to 10934 conditions per place. [2024-10-12 00:02:21,769 INFO L140 encePairwiseOnDemand]: 103/107 looper letters, 83 selfloop transitions, 4 changer transitions 0/132 dead transitions. [2024-10-12 00:02:21,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 132 transitions, 643 flow [2024-10-12 00:02:21,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:02:21,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:02:21,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 305 transitions. [2024-10-12 00:02:21,770 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7126168224299065 [2024-10-12 00:02:21,770 INFO L175 Difference]: Start difference. First operand has 105 places, 100 transitions, 333 flow. Second operand 4 states and 305 transitions. [2024-10-12 00:02:21,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 132 transitions, 643 flow [2024-10-12 00:02:21,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 132 transitions, 621 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-12 00:02:21,917 INFO L231 Difference]: Finished difference. Result has 103 places, 99 transitions, 324 flow [2024-10-12 00:02:21,917 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=324, PETRI_PLACES=103, PETRI_TRANSITIONS=99} [2024-10-12 00:02:21,918 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 9 predicate places. [2024-10-12 00:02:21,918 INFO L471 AbstractCegarLoop]: Abstraction has has 103 places, 99 transitions, 324 flow [2024-10-12 00:02:21,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 61.25) internal successors, (245), 4 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:21,918 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:21,918 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:21,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-12 00:02:21,919 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:02:21,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:21,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1533478894, now seen corresponding path program 1 times [2024-10-12 00:02:21,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:21,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540775869] [2024-10-12 00:02:21,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:21,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:21,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:02:21,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:21,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540775869] [2024-10-12 00:02:21,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540775869] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:21,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:02:21,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-12 00:02:21,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303224840] [2024-10-12 00:02:21,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:21,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:02:21,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:21,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:02:21,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:02:21,983 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 107 [2024-10-12 00:02:21,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 99 transitions, 324 flow. Second operand has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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) [2024-10-12 00:02:21,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:21,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 107 [2024-10-12 00:02:21,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:25,216 INFO L124 PetriNetUnfolderBase]: 20831/33365 cut-off events. [2024-10-12 00:02:25,216 INFO L125 PetriNetUnfolderBase]: For 30395/32085 co-relation queries the response was YES. [2024-10-12 00:02:25,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84644 conditions, 33365 events. 20831/33365 cut-off events. For 30395/32085 co-relation queries the response was YES. Maximal size of possible extension queue 1853. Compared 288562 event pairs, 8769 based on Foata normal form. 2095/33052 useless extension candidates. Maximal degree in co-relation 68875. Up to 15735 conditions per place. [2024-10-12 00:02:25,580 INFO L140 encePairwiseOnDemand]: 100/107 looper letters, 177 selfloop transitions, 8 changer transitions 0/227 dead transitions. [2024-10-12 00:02:25,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 227 transitions, 1186 flow [2024-10-12 00:02:25,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-12 00:02:25,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-12 00:02:25,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 486 transitions. [2024-10-12 00:02:25,583 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7570093457943925 [2024-10-12 00:02:25,583 INFO L175 Difference]: Start difference. First operand has 103 places, 99 transitions, 324 flow. Second operand 6 states and 486 transitions. [2024-10-12 00:02:25,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 227 transitions, 1186 flow [2024-10-12 00:02:25,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 227 transitions, 1149 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-10-12 00:02:25,880 INFO L231 Difference]: Finished difference. Result has 105 places, 99 transitions, 334 flow [2024-10-12 00:02:25,884 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=334, PETRI_PLACES=105, PETRI_TRANSITIONS=99} [2024-10-12 00:02:25,886 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 11 predicate places. [2024-10-12 00:02:25,889 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 99 transitions, 334 flow [2024-10-12 00:02:25,889 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.0) internal successors, (285), 5 states have internal predecessors, (285), 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) [2024-10-12 00:02:25,890 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:25,890 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:25,890 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-12 00:02:25,890 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:02:25,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:25,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1042651060, now seen corresponding path program 1 times [2024-10-12 00:02:25,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:25,890 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863530324] [2024-10-12 00:02:25,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:25,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:25,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:25,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:02:25,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:25,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863530324] [2024-10-12 00:02:25,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863530324] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:25,949 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:02:25,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:02:25,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171145850] [2024-10-12 00:02:25,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:25,949 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-12 00:02:25,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:25,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-12 00:02:25,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-12 00:02:25,969 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 107 [2024-10-12 00:02:25,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 99 transitions, 334 flow. Second operand has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 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) [2024-10-12 00:02:25,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:25,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 107 [2024-10-12 00:02:25,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:28,903 INFO L124 PetriNetUnfolderBase]: 21212/33178 cut-off events. [2024-10-12 00:02:28,904 INFO L125 PetriNetUnfolderBase]: For 42460/45193 co-relation queries the response was YES. [2024-10-12 00:02:29,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86176 conditions, 33178 events. 21212/33178 cut-off events. For 42460/45193 co-relation queries the response was YES. Maximal size of possible extension queue 1821. Compared 278513 event pairs, 5615 based on Foata normal form. 2733/33840 useless extension candidates. Maximal degree in co-relation 70314. Up to 13203 conditions per place. [2024-10-12 00:02:29,616 INFO L140 encePairwiseOnDemand]: 101/107 looper letters, 116 selfloop transitions, 6 changer transitions 0/164 dead transitions. [2024-10-12 00:02:29,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 164 transitions, 860 flow [2024-10-12 00:02:29,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-12 00:02:29,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-10-12 00:02:29,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 388 transitions. [2024-10-12 00:02:29,618 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7252336448598131 [2024-10-12 00:02:29,619 INFO L175 Difference]: Start difference. First operand has 105 places, 99 transitions, 334 flow. Second operand 5 states and 388 transitions. [2024-10-12 00:02:29,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 164 transitions, 860 flow [2024-10-12 00:02:29,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 164 transitions, 835 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-10-12 00:02:29,831 INFO L231 Difference]: Finished difference. Result has 106 places, 98 transitions, 335 flow [2024-10-12 00:02:29,831 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=323, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=335, PETRI_PLACES=106, PETRI_TRANSITIONS=98} [2024-10-12 00:02:29,832 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 12 predicate places. [2024-10-12 00:02:29,832 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 98 transitions, 335 flow [2024-10-12 00:02:29,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.2) internal successors, (301), 5 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) [2024-10-12 00:02:29,832 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:29,833 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:29,833 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-12 00:02:29,833 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:02:29,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:29,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1042652085, now seen corresponding path program 1 times [2024-10-12 00:02:29,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:29,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498828394] [2024-10-12 00:02:29,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:29,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:29,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:02:29,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:29,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498828394] [2024-10-12 00:02:29,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498828394] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:29,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:02:29,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-12 00:02:29,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124369773] [2024-10-12 00:02:29,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:29,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-12 00:02:29,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:29,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-12 00:02:29,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-12 00:02:29,920 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 107 [2024-10-12 00:02:29,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 98 transitions, 335 flow. Second operand has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:29,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:29,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 107 [2024-10-12 00:02:29,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-12 00:02:32,525 INFO L124 PetriNetUnfolderBase]: 17693/29827 cut-off events. [2024-10-12 00:02:32,525 INFO L125 PetriNetUnfolderBase]: For 37989/40176 co-relation queries the response was YES. [2024-10-12 00:02:32,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74952 conditions, 29827 events. 17693/29827 cut-off events. For 37989/40176 co-relation queries the response was YES. Maximal size of possible extension queue 1660. Compared 270414 event pairs, 9143 based on Foata normal form. 2565/30317 useless extension candidates. Maximal degree in co-relation 61134. Up to 15891 conditions per place. [2024-10-12 00:02:32,855 INFO L140 encePairwiseOnDemand]: 102/107 looper letters, 118 selfloop transitions, 4 changer transitions 0/164 dead transitions. [2024-10-12 00:02:32,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 164 transitions, 843 flow [2024-10-12 00:02:32,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-12 00:02:32,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-12 00:02:32,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 327 transitions. [2024-10-12 00:02:32,857 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.764018691588785 [2024-10-12 00:02:32,857 INFO L175 Difference]: Start difference. First operand has 106 places, 98 transitions, 335 flow. Second operand 4 states and 327 transitions. [2024-10-12 00:02:32,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 164 transitions, 843 flow [2024-10-12 00:02:33,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 164 transitions, 831 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-10-12 00:02:33,007 INFO L231 Difference]: Finished difference. Result has 105 places, 97 transitions, 325 flow [2024-10-12 00:02:33,007 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=325, PETRI_PLACES=105, PETRI_TRANSITIONS=97} [2024-10-12 00:02:33,008 INFO L277 CegarLoopForPetriNet]: 94 programPoint places, 11 predicate places. [2024-10-12 00:02:33,008 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 97 transitions, 325 flow [2024-10-12 00:02:33,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.5) internal successors, (238), 4 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-12 00:02:33,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-12 00:02:33,008 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-12 00:02:33,009 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-12 00:02:33,009 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 36 more)] === [2024-10-12 00:02:33,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-12 00:02:33,009 INFO L85 PathProgramCache]: Analyzing trace with hash -2037554650, now seen corresponding path program 1 times [2024-10-12 00:02:33,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-12 00:02:33,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132999638] [2024-10-12 00:02:33,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-12 00:02:33,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-12 00:02:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-12 00:02:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-12 00:02:33,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-12 00:02:33,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132999638] [2024-10-12 00:02:33,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132999638] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-12 00:02:33,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-12 00:02:33,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-12 00:02:33,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789523760] [2024-10-12 00:02:33,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-12 00:02:33,087 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-12 00:02:33,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-12 00:02:33,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-12 00:02:33,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-10-12 00:02:33,159 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 107 [2024-10-12 00:02:33,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 97 transitions, 325 flow. Second operand has 6 states, 6 states have (on average 56.833333333333336) internal successors, (341), 6 states have internal predecessors, (341), 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) [2024-10-12 00:02:33,160 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-12 00:02:33,160 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 107 [2024-10-12 00:02:33,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand